Which answer choice is equal to -2x2 - 21x - 54?

Answers

Answer 1
Answer: -21x -58

Explanation: start by multiplying -2 and 2 giving you -4
-4 -21x -54
Then combine like terms
-21x -58
Assuming there’s no equal sign that’s all you can do

Related Questions

algebra

(3x)^3 3^3 x^3 =????

Answers

Answer: 729x^6

Step-by-step explanation: I got this answer because I first multiplied the 3^3 which is 27

then the equation is 27x^3 times 3^3x^3. Then you do the same thing on the other side which is 27x^3. So 27x^3 times 27x^3. After that you multiple 27 and 27 which is 729, don’t forget your x^3 and x^3 which is x^6 so your answer is 729x^6.

(3x)^3 • 3^3 x^3

3^3x^3 • 3^3x3

27x^3 • 3^3x^3

27x^3 • 27x^3

729x^3x^3
729x^6

Solution= 729x^6

7/20 convertir de fracción a decimal

Answers

Answer: 0.35

Step-by-step explanation:

7/20 = 0.35

0.35 x 20 = 7

Find an equation of the tangent line to the curve at the given point.
y = x³ - 3x + 1, (3, 19)

Answers

Answer:

y=24x-53.

Step-by-step explanation:

1) the slope-interception view of the required tangent line is

y=slope*x+interception;

2) y'=3x²-3;

3) slope=y'(3), then slope=3*3²-3=24;

4) the required equation of tangent line has the form

y=24x+interception;

5) to calculate the interception it is needed to substitute the given coordinates (3;19) into this equation:

19=24*3+interception; ⇒ interception=-53;

6) finally, the required equation is y=24x-53.

The value of the 7 in 57,264 is ten times greater than the value of the 7 in which of these numbers?
A. 17,810
C. 78,893
B. 61,715
D. 95,371

Answers

C.78893

Step-by-step explanation:

-_-_+_(*;#-✓✓

radius of a circle is 5 units what is the diameter

Answers

The diameter is 2x the radius. The radius 5 (x). 2(5) =10. Diameter= 10.

Can someone help me out please??

Answers

Answer:

1. 7/8

2. 1/2

Step-by-step explanation:

y2-y1 /x2-x1 = slope

1. points: (-4,-4) and (4,3)

M = (3+4)/(4+4)

M=7/8

2. points: (-5,-3) and (3,1)

M = (1+3)/(3+5)

M = 4/8 or 1/2

Use slope formula: m = y2 - y1/x2 - x1
1st graph: (-4, -4) (4, 3)
m = 3 - -4/4 - -4 = 7/8

2nd graph: (-5, -3) (3, 1)
m = 1 - -3/3 - -5 = 4/8 = 1/2

So, the slopes for 1st graph is 7/8 and 2nd graph is 1/2.

As a nurse, part of your daily duties is to mix medications in the proper proportions for your patients. For one of your regular patients, you always mix Medication A with Medication B in the same proportion. Last week, your patient's doctor indicated that you should mix 130 milligrams of Medication A with 182 milligrams of Medication B. However this week, the doctor said to only use 140 milligrams of Medication B. How many milligrams of Medication A should be mixed this week?

Answers

Proportionately, the number of milligrams of Medication A that should be mixed this week with 140 milligrams of Medication B is 100 milligrams.

What are proportions?

Proportions are the ratios of variables to others.

Proportions show the number or value relationships of two variables.

Decimals, percentages, and fractions can represent proportions.

Data and Calculations:

The mixture of Medication A and B last week:

Medication A = 130 milligrams

Medication B = 182 milligrams

The proportion of Medication A to Medication B = 0.714287

The mixture of Medication A and B this week:

Medication B = 140 milligrams

Medication A = x

x = 140 x 0.714287

x = 100 milligrams

Thus, using equivalent proportions, 140 milligrams of Medication B should be mixed with 100 milligrams of Medication A.

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The tape diagram shows that shanice spent 120 minutes researching for debate club last week?

Answers

Time that is 100% of 120 minutes is 120 minutes.

Time that is 10% of 120 minutes is 12 minutes.

Time that is 110% of 120 minutes is 132 minutes.

What are the times?

Percentage is the  fraction of an amount that is usually expressed as a number out of hundred. In order to convert a number as a percentage, multiply the fraction of the number by 100. The sign used to represent percentages is %. Percentages are a measure of frequency.

Time that is 100% of 120 minutes = (100 / 100) x 120 = 120 minutes

Time that is 10% of 120 minutes = (10 / 100) x 120 = 12 minutes

Time that is 110% of 120 minutes = (110 / 100) x 120 = 132 minutes

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Answer: 100% of 120 is 120 Minutes

               10% of 120 is 12 Minutes

               110% of 120 is 132 Minutes

Step-by-step explanation:

There you go!


please help for brainiest !!!!

Answers

Answer:

E) Line 5

Step-by-step explanation:

Line 5 contains the first incorrect mathematical process

Process

x−5(x+1)>3x+2

−4x−5>3x+2

−7x−5>2

−7x>7

x<−1

Triangle PQR has vertives P(2, -4), Q(4, -5), and R(7, -2). It is translated 6 units left and 3 units up to produce Triangle P'Q'R'. Complete table.

Answers

The coordinates of the triangle P'Q'R' is P'(x, y) = (- 4, - 1), Q'(x, y) = (- 2, - 2) and R'(x, y) = (1, 1), respectively.

What are the locations of the vertices of the triangle after applying rigid transformations?

In this problem we know the three vertices of a triangle on a Cartesian plane and we must determine the coordinates of its image by applying rigid transformations. According to the statement, the vertices of the image are obtained by applying a translation formula:

P'(x, y) = P(x, y) + T(x, y)        (1)

Where:

P(x, y) - Original pointP'(x, y) - Resulting point T(x, y) - Translation vector

If we know that P(x, y) = (2, - 4), Q(x, y) = (4, - 5), R(x, y) = (7, - 2) and T(x, y) = (- 6, 3), then the coordinates of the vertices of the image are:

P'(x, y) = (2, - 4) + (- 6, 3)

P'(x, y) = (- 4, - 1)

Q'(x, y) = (4, - 5) + (- 6, 3)

Q'(x, y) = (- 2, - 2)

R'(x, y) = (7, - 2) + (- 6, 3)

R'(x, y) = (1, 1)

The coordinates of the triangle P'Q'R' is P'(x, y) = (- 4, - 1), Q'(x, y) = (- 2, - 2) and R'(x, y) = (1, 1), respectively.

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Write a linear cost function for the situation. Identify all variables used.
A parking garage charges 3 dollars plus 45 cents per half-hour.
Identify all variables used. Choose the correct answer below.
Part 2 of 2
O A. C(x) represents the number of hours the parking garage was used after paying x dollars.
B. C(x) represents the number of half-hours the parking garage was used after paying x dollars.
C. C(x) represents the cost for using the parking garage for x half-hours.
OD. C(x) represents the cost for parking x cars in the parking garage.
A linear cost function for the situation is C(x) =
(Use integers or decimals for any numbers in the expression.)

Answers

Option (C) is the correct answer.


What is the linear system?
It is a system of an equation in which the highest power of the variable is always 1. A one-dimension figure that has no width. It is a combination of infinite points side by side.

Given

A parking garage charges 3 dollars plus 45 cents per half-hour.

Let C(x) be the linear cost.

The fixed charge is 3 dollars

The variable charge per half-hour is 0.45 dollars.

Suppose the men leave for x half-hours for one hour the x will be 2x.

Then the equation will be
c(x) =0.45×2x+3
C(x) =0.9x+3

Thus, the equation is . 0.9x+3

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1/5 + 1/3x > 1/2x - 1/4

Answers

The common denominator represent the value  is X<2.7.

Get every x term on the right side and every constant term on the left to begin.

1/5+1/3 X>1/2 X-1/4

1/5+1/4+1/3 X>1/2 X

1/5+1/4>1/2 X-1/3 X

The two halves of a fraction are the numerator and the denominator. Any arithmetic operation involving two or more fractions, such as addition or subtraction, is possible if the denominators of the two fractions are the same. To this, the phrase "common denominator" relates.

When two fractions have the same denominator, we refer to them as having common denominators. Common denominators facilitate fractional operations like comparison, addition, and subtraction.

Give common denominators to the terms on each side now.

4/20+5/20>3/6 X-2/6 X

9/20>1/6 X

By multiplying both sides by 6, we may now.

27/10>X

2.7>X

Hence, the common denominator value is X<2.7.

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Solve For x
[tex] \tt \red{4x + 2 = -8}[/tex]







Thank uh ~​

Answers

x=-2.5
Step by step explanation

Answer:

The answer will be -5/2.

Step-by-step explanation:

[tex]4x + 2 = - 8 \\ subtracting \: 2 \: from \: each \: sides \: we \: get \\ 4x + 2 - 2 = - 8 - 2 \\ 4x = - 10 \\ diving \: both \: sides \: by \: 4 \: we \: get \\ \frac{4x}{4} = \frac{ - 10}{4} \\ x = \frac{ - 5 \times 2}{2 \times 2} \\ x = \frac{ - 5}{2} [/tex]

Which number line represents the solutions to lx + 4) = 2?
O
O
O

+++
-7 -6 -5 -4 -3 -2 -1 0
1 2
+

+++ ++
-7 -6 -5 -4 -3 -2 -1 0 1

+
+
-7 -6 -5 -4 -3 -2 -1 0 1 2 3
++
+
-7 -6 -5 -4 -3 -2 -1 0 1
2
3
2
+3
+
3
4
4
5
▬▬▬▬▬▬▬▬
4 5
6 7
4
+ +
6
7
5 6 7
++
5 6 7
+

Answers

The answer is 1st one on the part 1

What is 4 gal 6 qt 112 oz in standard notation?

Answers

The value of 4 gal 6 qt 112 oz expressed in standard notation is; 6.375

How to express in Standard Notation?

Standard notation of a number is defined as when a number is written with only number digits. This is the typical way to write numbers since words are not used in standard number notation.

Now, from conversions, we know that;

1 oz = 0.0078125 gallons

1 qt = 0.25 gallons

Thus, 4 gal 6 qt 112 oz expressed in gallons is;

4 + (6 * 0.25) + (112 * 0.0078125)

= 4 + 1.5 + 0.875

= 6.375

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0.02,0.2,2,20,200, what is next

Answers

Answer:

0.2

Step-by-step explanation:

Answer: 2000

Step-by-step explanation:

The pattern is multiplying by 10. Therefore, 200 x 10= 2000

Based only on the information given in the diagram, which congruence
theorems or postulates could be given as reasons why ACDE=AOPQ?
Check all that apply.
AA
E
A. LL
B. AAS
C. SAS
D. LA
E. HL
F. ASA

Answers

Answer is ADEF

Given that, two right tringle = R + ΔHEL , R +ΔPME

Hypotenuse equal , A set of corresponding right angles are equal.{HL};

LL=LE

So ∠E(M tringle HEL)∠LM (M tringle PME)

∠H=∠P 90°

∠L=∠E                        ⇒AAS

HE PM or LE =EM

∠E = ∠M

EL = ME                      ⇒ASA

∠L = ∠E

HF = PM

∠E = ∠M                       ⇒SAS

EL = ME

Hence choose A.D.E.F

{Determination of congruence of right tringle }

explanation of  Determination of congruence of right tringle

A plane figure bounded by three finite line segments to form a closed figure is known as a triangle. A right-angled triangle is a special case of the triangle. In a right-angled triangle, one of the interior angles measures 90°. Two right triangles are said to be congruent if they are of the same shape and size. In other words, two right triangles are said to be conger

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Find the slope of the line if it exists.

Answers

Answer:

The slope would be [tex]-\frac{4}{3}[/tex]

Step-by-step explanation:

Joshua purchased a game card for the arcade for a total of $20. He played three basketball hoop games for $2.25 each and two rounds of air hockey for $1.75 each. How much did he have left on the game card?

1.)$ 13.50
2.)$ 10.25
3.)$ 9.75
4.)$ 6.75

Answers

Answer:

b

Step-by-step explanation:

Joshua had $9.75 left on the game card (option 3).

Joshua's expenses on the game card can be calculated as follows:

Cost of playing three basketball hoop games = 3 games * $2.25/game

Cost of playing three basketball hoop games = $6.75

Cost of playing two rounds of air hockey = 2 rounds * $1.75/round

Cost of playing two rounds of air hockey = $3.50

Total expenses = $6.75 + $3.50

Total expenses = $10.25

Joshua originally had $20 on the game card, and he spent $10.25. To find out how much he had left, subtract his expenses from the original amount:

Amount left = $20 - $10.25

Amount left = $9.75

So, Joshua had $9.75 left on the game card.

The correct answer is 3.) $9.75.

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eight plus the quotient of a number and 3 is 75

Answers

8 + x / 3 = 75

Minus 8 on both sides

x / 3 = 67

Multiply by 3 on both sides.

x = 201

Please help solve question

Answers

Answer:

a) [tex]x=\frac{15}{p}[/tex]

b) x=[tex]-3[/tex]

Step-by-step explanation:

First, you distribute the 4 to open the parentheses.

[tex]4px+4=64[/tex]

Subtract 4 to both sides:

[tex]4px=60[/tex]

Divide by 4p on both sides:

[tex]x=\frac{60}{4p}[/tex]

[tex]x=\frac{15}{p}[/tex]

For the second part, substitute the value of p.

[tex]x=\frac{15}{-5}[/tex]

[tex]x=-3[/tex]

One person has 1700 more than another person .Between then,they have a total of 10500. How much does each person have?

Answers

Answer:

One person will have 6100 and the other will have 4400.

Step-by-step explanation:

10500/2 = 5250

1700/2 = 850

5250+850 = 6100

10500-6100 = 4400

Check Answer:

6100+4400 = 10500

6100-4400 = 1700

Write the equation of the line in fully simplified slope-intercept form.

Answers

The equation of the line in fully simplified slope-intercept form is [tex]y=\frac{1}{4} x-1[/tex].

What is a slope intercept form?

A line is defined by the equation y = mx + b, which is also known as the slope-intercept form. When the line is graphed, m represents the slope and b the point at which the line intersects the y-axis.

For calculating the slope, the formula used is [tex]m=\frac{x_{2} -x_{1} }{y_{2} -y_{1} }[/tex]

From the graph we see that the points are (4,0) and (0,-1).

Substituting the points in the formula,

[tex]m=\frac{x_{2} -x_{1} }{y_{2} -y_{1} }\\m=\frac{-1-0}{0-4} \\m=\frac{-1}{-4} \\m=\frac{1}{4}[/tex]

We know that, the equation of a line in point slope form, where (x₁, y₁) is the point and slope m is:

(y – y₁) = m(x – x₁)

Here, (x₁, y₁)= (4,0)

Substitute the value of m and any coordinate into the formula y−y₁=m(x−x₁)

[tex]y-0=\frac{1}{4} (x-4)\\y=\frac{1}{4} x-1[/tex]

Therefore, the equation of the line in fully simplified slope-intercept form is [tex]y=\frac{1}{4} x-1[/tex].

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Determine whether the given ordered pair is a solution of
the system of equations.
(8, 7); -x+y= - 1
6x + y = 41

Answers

Answer:THE ANSWER IS NO.

Step-by-step explanation:

As we have given that x=8 and y=7

put theses values in given equations :-

 -x + y= -1

-8+7= -1,true

But, for 6x+y=41

We get 6*8+7=41

55 ≠41

Hence the answer is NO.

Answer:

Step-by-step explanation: if the ordered pair (8,7) is a solution of a system of equations; the values x=8, y=7                                             substituted in the system must make both equations true.               -8+7=-1                                                                                                                         -1=-1 √                                                                                                        6×8+7=41                                                                                                                         48+7=41                                                                                                                         55=41  

(8,7)  is not a solution of the systems.

PLS ANSWER. The questions is attached. Dont' put like I dont' know the answer if u don't know don't answer pls.

Answers

Answer:

x = 2.4

Step-by-step explanation:

see image for explanation.

Hope it helps

which box and whiskers plot matches the data, 23, 32, 20, 13, 27, 36, 29, 38 23, 15, 30, 18, please its a test

Answers

Answer:

Option C

Step-by-step explanation:

Given the data set, 23, 32, 20, 13, 27, 36, 29, 38, 23, 15, 30, 18, to find out which box-and-whisker plot matches the data, let's work out the 5-number summary needed for constructing a box plot.

The five-number summary includes the min, Q1, median, Q3 and max value.

Let's find them.

First, order the data set from the least to the largest

13, 15, 18, 20, 23, 23, 27, 29, 30, 32, 36, 38

Min = 13

Max = 38

Median = (23 + 27) ÷ 2 = 50 ÷ 2 = 25

Q1 = (18 + 20) ÷ 2 = 38 ÷ 2 = 19

Q3 = (30 + 32) ÷ 2 = 62 ÷ 2 = 31

The box-and-whiskers plot will have the description given in option C.

The length of a rectangle is twice its width.
If the perimeter of the rectangle is 48 ft, find its length and width.

Answers

Formula we use,

→ P = 2(L + W)

Then the value of L and W is,

→ P = 2(L + W)

→ 48 = 2(2x + x)

→ 2(3x) = 48

→ x = 48/6

→ [ x = 8 ]

Then the width will be,

→ W = x = 8 ft

Hence, the width is 8 ft.

Now the length will be,

→ L = 2x = 2(8) = 16 ft

Therefore, the length is 16 ft.

the volume of water is usually distributed with a mean of 62ml and standard deviation of 40ml. What is the probability that the volume will be greater than 90ml?​

Answers

The probability of the volume of water being over 90 ml is 24.10%.

What exactly is the standard normal distribution?A symmetric probability distribution only with equal mean, mean, as well as mode values is known as a standard normal distribution.A statistical table as well as computer software is used to estimate the likelihood of a standard normal distribution.

For the given question;

The mean of the sample is; μ = 62 ml.

The standard distribution is; σ = 40 ml.

The probability of the values must lie more than 90 ml.

Thus,

P(x > 90) = P[ (x - μ)/ σ ]

Substitute the values;

P(x > 90) = 1 -  P[ (90 - 62)/ 40]

P(x > 90) = 1 - P[0.7]

P(x > 90) = 1 - 0.758

P(x > 90) = 0.2410

P(x > 90) = 24.10%

Therefore, the probability that the  the volume of water will be greater than 90 ml is 24.10%.

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HELP ME OUT PLEASE!!

What does the y-intercept of the graph represent?

O It was 8°F when recording began

O There is a change of 4°F every hour

O There is a change of 2 °F eve every hour

O Maximum temperature is 20°F​

Answers

Answer:

see explanation

Step-by-step explanation:

the y- intercept 8 occurs when time = 0

that is it was 8° F when recording began at time = 0

The governor of state A earns ​$54,900 more than the governor of state B. If the total of their salaries is ​$310,850​, find the salaries of each.

Answers

Step-by-step explanation:

Let the earning of governor of state B be x then

we have,

Earning of A = 54900 + x

Earning of B = x

according to question,

Earning of A + Earning of B = 310850

54900 + x + x = 310850

2x = 255950

x = 127975

earning of A = 182875$

earning of B = 127975$

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