Simplify the expression by combining like terms. Then,
evaluate the expression by substituting the given values
for the variables.
x=5 and y=2
y^2 + xy – 7y^2

Answers

Answer 1

Answer:

-14

Step-by-step explanation:

The like terms in this equation is y^2 and -7y^2 so combining the two the equation becomes:

xy-6y^2

Then we substitute the values in:

5×2-6×2^2 = -14


Related Questions

(x^2 + 2x + 2)(x + 5) = 0

Answers

Answer:

[tex] {x}^{2} + 2x + 2 = 0 \: no \: solution \\x + 5 = 0 - \: \: \: \: \: x = - 5 \\ sox = - 5 [/tex]

Help please this is for geometry. its easy.

Answers

Answer:

Step-by-step explanation:

ccadcdddddddddddddddddddddddd

A triangle has angle measures
x+15, 3x-35, and 4x.
What type of triangle is it? Be as specific as possible. Justify your answer.

Answers

All angles in the triangle add up to 180 degrees. So,
(x+15) + (3x-35) + 4x = 180
8x - 20 = 180
8x = 200
x = 25

First angle : x+15 = 25+15 = 40 degrees
Second angle: 3x-35 = 3 * 25 - 35 = 40 degrees
Third angle: 4x = 4 * 25 = 100 degrees.

It is an isosceles triangle since it has two angles (the first end the second one) equal to each other.

Hope that helps :)

Jackson usually makes $250 per week working at a grocery store. Last week, he made 60% more than usual. This week, Jackson hopes to make 7/8 of what he made last week. How much money does Jackson hope to make this week

Answers

Answer:

350$

Step-by-step explanation:

he usually makes $250, 60% more is $400, and 7/8 of $400 is $350

Question 20 of 40
Anna thinks of a number. She subtracts 5 from the number, multiplies the
result by 2, and then adds 6. The number she ends up with is 14. What
number did Anna start with?
If you work backward to solve this problem, what do you do first?
A. Divide 14 by 2
OB. Add 5 to 14
C. Subtract 5 from 14
D. Subtract 6 from 14
What’s the first steps when doing it backwards ?

Answers

Answer:

2(x-5)+6=14 is your starting equation, and then we solve:

2(x-5)+6=14

2(x-5)/2 +6=14/2

x-5+6=7

the first step is to divide by 2, so A :)))

4. In the figure, points A, B, and Clie in plane Z. Which of the following postulates can be used to show that A and B are collinear?
O Through any two points, there is exactly one line.
O Through any three points not on the same line, there is exactly one plane.
O If two lines intersect, then their intersection is exactly one point.
o If two planes intersect, then their intersection is a line.

Answers

Collinear points are points that lie on the same line.

The postulate to prove that A and B are collinear is: (a) Through any two points, there is exactly one line.

From the question, we understand that:

A, B and C are in plane ZA and B are collinear

For A and B to be collinear, then:

A line must pass through A and B, in such a way that points A and B lie on that line

Because only one line can pass through any two points, the appropriate postulate to use is: (a) Through any two points, there is exactly one line.

Read more about collinear points at:

https://brainly.com/question/1593959

The temperatures for the week were as follows Sunday 72 Monday 72 Tuesday 85 Wednesday 69 Thursday 72 Friday 80 and Saturday 77 determine the mean rounded to the nearest tenth median mode and range of the results

Answers

Answer:

Mean- 75.3

Median- 72

Mode- 72

Range- 77

Step-by-step explanation:

Q and R are complementary. The measure of Q is 26 less than the measure of R. Find the measure of each angle

Answers

Answer: Q = 32 °  and R = 58°

Step-by-step explanation:

Since Q and R are complementary,

⇒ Q + R = 90°

Since Q is 26° less than the measure of R

⇒ R - 26° = Q

We can therefore say that ( R - 26°) + R = 90°

⇒              2 R = 90° + 26°

                    R = 58 °

Also, since  R - 26°   = Q

                   58° - 26° =  Q

                            32 ° = Q

∴ Q = 32 °  and R = 58°

The mass of the sun is about 1.98x10^30 kg. The mass of the Earth is about 5.97x10^24 kg. Estimate how many times bigger the mass of the sun than the mass of earth. Round to the NEAREST TENTH!

Answers

Answer:

About 333000 times

Step-by-step explanation:

How many different 9-letter "words" can you
make by arranging the letters in DEVIATION?
The arrangements don't have to be actual words
that are included in any dictionary.

Answers

There are 5040 different 9-letter “words” that can be made by arranging the letters in DEVIATION.

The given word is DEVIATION and we are required to find out the number of different 9-letter “words” that can be formed by arranging its letters.

To solve the problem, we will use the formula for finding permutations of n objects taken r at a time when all the objects are distinct.

The formula is given by: nPr = n! / (n-r)! where n is the total number of objects and r is the number of objects to be selected.

Here, we have 9 objects (letters) and we need to arrange all of them, so r = 9.

Now, we need to find out the value of n.

The given word DEVIATION has 9 letters, but two of them (E and I) are repeated twice.

Therefore, n = 9 - 2 = 7.

We will substitute these values in the formula to get the required answer:

nPr = n! / (n-r)! = 7! / (7-9)! = 7! / (-2)! = 7! / 1 = 5040

Therefore, there are 5040 different 9-letter “words” that can be made by arranging the letters in DEVIATION.

For more questions on permutations

https://brainly.com/question/28065038

#SPJ8

heyy everyone
equivalent fraction of 3/6 with denominator 72 is
can i pls know the answer

Answers

3/6

Take a lot at the denominator 6, 6 multiplied by 12 gives 72, therefore multiply the numerator 3 by 12 to give 36.

3/6= 36/72

please mark Brainliest.

Answer:

What is 31/72

Step-by-step explanation:

3/6 is really 1/2 as 3 is half of 6

So half of 72 would be 31

Hope this helps you see it in a much more simpler way!

<3Miss Hawaii

Austin's town voted on a new speed limit. 90% of the 20 votes were in favor of the new speed limit. How many votes were in favor?

Answers

Answer:

18

Step-by-step explanation:

times 20 by 0.90

20*0.90=18

1) soe soe had 15kg of flour. She used 4/5 of it to make some cookies. How many kilograms of flour had she left?

2) U Kyaw mixed red paint and blue paint in the ratio 5:3 for painting a wall. If he made 24 liters of paint for the painting job, how many litres of blue paint did he use?

Answers

Answer:

1) 3 liters left

2) 9 liters of blue paint

Step-by-step explanation:

1) 1/5 * 15 = 3

2) 3 liters of blue paint for each 8 liters.

24/8 * 3 = 9

Fractions and Comparisons

Level : JHS

1.

The amount of flour used is :

= 4/5 × 15 kg

= 12 kg

The amount of flour left is :

= 15 kg - 12 kg

= 3 kg

2.

5 : 3 = Red : Blue

The amound of blue paint :

= 3 : (3 + 5) × 24 liters

= 3 : 8 × 24 liters

= 9 liters

So, the litres of blue paint did he use is 9 liters

#LearnWithEXO

Solve for the given variable.

3s - 17 = 19

Answers

Add 17 to both sides-

3s - 17 = 19

+17 +17

Now, divide both sides by 3-

3s/3 = 36/3

Which gives the answer of s = 12

hope this helps !! :)

Factorize mn-nq+mo-oq

Answers

mn-nq+mo-oq

n(m-q) + o(m-q)

final ans:(n+o) (m-q)

Can someone help me do this

Answers

Answer:

6

Step-by-step explanation:

Find the missing angle:

180⁰ - 82⁰ = 98⁰

Find the sum of the angles given without the missing angle:

180⁰ - 98⁰ = 82⁰

The sum of both the angles is 82⁰

Write an equation:

5x + 8 + 6x + 8 = 82⁰

Collect the like terms together

11x + 16⁰ = 82⁰

Subtract 16⁰ from both sides

11x = 66⁰

Divide by 11 on both sides

x = 6⁰

Write the equation of a line, in slope-intercept form, that has a slope of m=9 and passes through the point (4, 31)

Answers

Answer:

9x-y = 5

Step-by-step explanation:

Equation of line in slope intercept form:

y-y1 = m*(x-x1), m=9, (x1,y1)=(4,31)

y-31 = 9*(x-4)

y-31 = 9x-36

9x-y = 36-31

9x-y = 5

Volume Of This Cylinder

Answers

Answer:

2827.4 cm

Step-by-step explanation:

Volume of cylinder

V= π*r^2*h

H= height and r= radius

H= 9cm and r = diameter ÷ 2

r= 20cm ÷2 = 10cm

V= 22/7* 10^2* 9cm

V= 2829cm^3

Please help me this is due please help

Answers

Answer:

each person pays $21.04

Step-by-step explanation:

105.20/5=21.04

Answer:

$21.04

Step-by-step explanation:

U just divide the amount of money by 5. (im pretty sure thats all u do)

Solve please....................................

Answers

Answer:

angle (3x-15)°=angle (2x+10)° (by vertically opposite angles)

3x-15=2x+10

3x-2x=10+15

x=25

by putting the value of x.

3x-15=3×25-15 = 60°

38°+ 60°+ <ebf= 180° (by sum of all sides is 180° )

98°+<ebf = 180°

<ebf = 180° - 98°

<ebf = 82°

To rent a taxi in Los Angeles, the taxi service charges a flat rate of $11.20 and an additional $3.10 per mile driven. Write an equation in slope- intercept form where x represents the distance of the trip, and y represents the amount the taxi service would charge to drive that distance .

Answers

Answer:

y = 3.1x + 11.2

Step-by-step explanation:

Flat rate is the y- intercept b = 11.2

Charge per mile is the slope m = 3.1

The equation is:

y = 3.1x + 11.2

solve for r to find the missing term in geometric sequence

hi can someone please answer my question. thank you ❤️​

Answers

Step-by-step explanation:

given :

120, 60, 30, _, _, _

find r!

solution :

r = 60/120 = ½.

=> 120,60,30, 15, 15/2 , 15/4 , ...

Step-by-step explanation:

Calcute the ratio :

r = Un/Un-1

r = 60/120

r = ½

Calculate 4th term :

Un = ar^n-1

U4 = 120 × ½^4-1

U4 = 120 × ½³

U4 = 120 × 0.125

U4 = 15

Calculate 5th term :

Un = ar^n-1

U5 = 120 × ½^5-1

U5 = 120 × ½⁴

U5 = 120 × 0.0625

U5 = 7.5

Calculate 6th term :

Un = ar^n-1

U6 = 120 × ½^6-1

U6 = 120 × ½⁵

U6 = 120 × 0.03125

U6 = 3.75

Question 17
5 pts
What inequality is shown on the graph?
-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8
23
O2<3
O2 > 3
O3 <3

Answers

Answer:

[tex]x \geqslant 3 [/tex]

please help thank you

Answers

Answer:

[tex]x - 2 = 0 \\ x = 2 \\ p(2) = 0 \\ {2}^{4} - d {2}^{3} + 8 \times {2}^{2} - 14 \times 2 + 16 = 0 \\ 16 - 8d + 32 - 28 + 16 =0 \\ 8d = 36 \\ d = 36 \div 8 = 4.5[/tex]

enjoy it

Please help!! BRAINLIEST to correct answer!!

Answers

Answer:

Here is your equation (x+2)^2+(y+10)^2=100

,  Hope this helps :)

Have a great day!!

Answer:

(x+2)²+ (y+10)²=100

Step-by-step explanation:

y=6x+2    P(-2,0)

x=-2

y=6 × (-2) + 2

y= -12+2

y= -10

M(-2,-10)      r= 0 - ( - 10 ) = 10

(x+2)²+ (y+10)²=100

Hope this helps!! Can I get brainliest?? Anyways have a great day!! :3

A line passed through the points (1, 2) and (3,-4).
Determine the equation of that line in slope intercept
form.

Answers

The slope of the line is m = -3

The y-intercept is (0,5)

The equation of the line in the slope-intercept form is y = 5-3x

Find the area of the kite

A) 660 mm2
B) 744.5 mm2
C) 630 mm2
D) 106 mm2
F) 1260 mm2

Answers

Answer:

C) 630 mm²

Step-by-step explanation:

area of kite = pq

2

= 28x45

2

= 630 mm²

only 23 please. And you can get 50 points

Answers

Answer: [tex]\large \boldsymbol {} \displaystyle y=-5x-7 \ \ or \ \ f(x)=-5x-7[/tex]

Step-by-step explanation:

Having built a graph, we can immediately understand that this is a linear functiony=kx+bHaving built a graph, we can immediately understand that this is a linear functiony=kx+bIn order to determine which rule the function follows, it is only enough for us to know the coordinates of only two points, let them be points (-3  ; 8 ) and (-2 ; 3 ) Substitute the values of x and y into an unknown function y=kx+b [tex]\displaystyle \large \boldsymbol {} \left \{ {{-3k+b=8} \atop {-2k+b=3 }} \right.=> -k=5=>k=-5 \ \ ; \ \ b=3+2k=-7[/tex]

Then we get the function :

[tex]\large \boldsymbol {} \displaystyle y=-5x-7[/tex] The graph in attached file

[tex]\large \boldsymbol{}[/tex]

HELP MEEEE !! I’m stuck

Answers

Answer:

10

Step-by-step explanation:

because it is what it is i just did the math

solve this equation
-10+2x=-40

Answers

Answer: X= -15

Step-by-step explanation:

Add 10 from the left side to the right side to arrive at -30. Divide -30 by 2 to solve for X.

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