Answer:
b) 20, a) 14, c) 28, d)10
Step-by-step explanation:
b) 2a +3b ; a=7 and b=2
2(7) + 3(2)
14 +6
20
a) ab
(7)(2)
14
c)2ab
2(7)(2)
14(2)
28
d) (a-b)2
2a-2b
2(7)-2(2)
14-4
10
I was a bit confused at the question, but those were the answers that I got and the work that follow. Hope this helps! Good luck.
At midnight in Alaska, the temperature in Sitka is 29.7 degrees Fahrenheit.
Each hour after that the temperature decreases by 1.23 degrees until the sun comes up.
What is the temperature 2 hours after midnight?
29.7°F + (1.23°F (2))
= 29.7°F + 2.46°F
= 32.16°F
#LearnWithEXO
Mr. Alcazar bakes cookies in batches of 60 and batches of 90. If he bakes 6 batches of 60 cookies, how many cookies does he bake?
Answer:
Mr. Alcazar baked 810 cookies.
Step-by-step explanation:
Given that Mr. Alcazar bakes 6 batches of 60 cookies and five batches of 90 cookies, to determine the amount of cookies that he cook, the following calculation must be performed:
(6 x 60) + (5 x 90) = X
360 + 450 = X
810 = X
Therefore, according to the calculation that has been made, Mr. Alcazar baked 810 cookies.
Two side lengths of a triangle are 30.9 inches and 42.0 inches. the sides meet at a 19degree angle. What is the area of the triangle?
Step-by-step explanation:
A=hbb
=42· 0 x30.9
=648.9
HELPNHGHJJJKJHFCBPPPPPPPHELPPPPPP
can anyone help ?
Fasttt
Answer:
- 3
Step-by-step explanation:
6 - 4x = 6x - 8x + 12
6 - 4x = - 2x + 12
6 - 12 = - 2x + 4x
- 6 = 2x
x = - 6 / 2
x = - 3
Answer:
+3
Step-by-step explanation:
we collect like terms to give us
-4x-6x+8x=12-6
-10x+8x=-6
-2x=-6
divide through by -2 to give us
-2x/-2=-6/-2
x=+3
note that when a negative sign divides another negative sign, it gives us a positive sign which in our case, could be ignored if chosen to
can someone plz help with this I'll mark brainliest
Answer:
the answer to your question is B.4
need an answer, please need an answer, please
Answer:
[tex] \alpha = \frac{ - b + \sqrt{ {b}^{2} - 4ac} }{2a} \\ \beta= \frac{ - b - \sqrt{ {b}^{2} - 4ac} }{2a} \\ \alpha +\beta = \frac{ - b + \sqrt{ {b}^{2} - 4ac} }{2a} + \frac{ - b - \sqrt{ {b}^{2} - 4ac} }{2a} \\ = \frac{ - 2b + 0}{2a} = \frac{ - 2b}{2a} \\ \therefore \: \alpha +\beta = - \frac{b}{a} \\ \alpha \times \beta = \frac{ - b + \sqrt{ {b}^{2} - 4ac} }{2a} \times \frac{ - b - \sqrt{ {b}^{2} - 4ac} }{2a} \\ = \frac{ {b}^{2} - ( {b}^{2} - 4ac) }{4 {a}^{2} } \\ = \frac{4ac}{4 {a}^{2} } \\ \therefore \alpha \times \beta = \frac{c}{a} \\ (x - \alpha)(x - \beta) = 0 \\ {x }^{2} + (\alpha + \beta)x + \alpha\beta = 0\\\\Let \:D =\sqrt{ {b}^{2} - 4ac}\\ If \:D >0 \Rightarrow \alpha, \beta \in \mathbb R\:(2 \: real \:roots)\\ If D =0 \Rightarrow \alpha= \beta \in \mathbb R\: (one \:real\: root) \\ If D <0 \Rightarrow \alpha, \beta \in \mathbb C\:(complex\: roots)\\At least 4examples\\{(x-1)}^{2}=0\\{x}^{2}-x-1=0 \\{x}^{2}-2x+13=0\\7{x}^{2}-49x-7=0\\ Applications\\ut+g{t}^{2}=s\\a=g\\u=-\frac{b}{a}\\s=\frac{c}{a}[/tex]
Answer:
Step-by-step explanation:
1) Determining the nature of roots:
Quadratic equation: ax² + bx +c = 0
Find D (Discriminant) using the D = b² - 4ac
If D = 0 , then the two roots are equal.
If D > 0, then the equation has two distinct real roots.
If D < 0, then the roots are complex/ imaginary.
One can find the sum and product of the roots using the below mentioned formula.
1) sum of roots = [tex]\frac{-b}{a}[/tex]
2) Product of roots = [tex]\frac{c}{a}[/tex]
If sum and product of the roots are given, one can frame the quadratic equation by x² - (sum of roots)*x + product of roots = 0
2) i) x² - 6x + 9 = 0
a = 1 ; b = -6 and c = 9
D = (-6)² - 4 * 1 * 9 = 36 - 36 = 0
D = 0. So, two equal roots
ii) x² - 4x + 3 = 0
a = 1 ; b = -4 ; c = 3
D = (-4)² - 4 * 1 * 3 = 16 - 12 = 4
D > 0. So, two distinct real roots.
iii) x² - 4x - 3 = 0
a = 1 ; b = -4 ; c = -3
D = (-4)² - 4*1*(-3) = 16 + 12 = 28 > 0
D > 0. So, two distinct real roots.
iv) x² - 4x + 7 = 0
a = 1 ; b = -4 ; c = 7
D =(-4)² - 4 *1 *7 = 16 - 28 = - 12
D< 0. So, two imaginary/ complex roots.
165÷11
I'm not sure sure I had got R15
Answer:
165/11= 15
Step-by-step explanation:
I used a calculator
Trapezoid ZOID is congruent to trapezoid TRAP. If vertices 2 and have coordinates (0, -2) and (0, -5) respectively, which of the following could be possible coordinates for vertex
(4.-0,5)
0 (-3.5, -3)
(-1.5, 1
(-4.5.-5)
The trapezoids are congruent if the corresponding sides of each trapezoid are equal
The option that gives the possible coordinates for the vertex I is the option;
[tex]\underline{(-4.5, -5)}[/tex]
Reason:
The given coordinates of the trapezoid TRAP = T(3, 5), P(3 2), R(6, 5), and A(7.5, 2)
The given coordinates of the trapezoid ZOID = Z(0, -2), and D(0, -5)
Required: The possible coordinates for a vertex on ZOID
Solution:
The given points of the trapezoid are the height of the trapezoid ZOID
The possible vertex of I, and O are;
I(4.5, -5), I(-4.5, -5), O(3, -2), O(-3, -2)Therefore;
The option that gives the possible coordinates (position) of a vertex I is the option [tex]\underline{(-4.5, -5)}[/tex]
Learn more here:
https://brainly.com/question/12871672
Answer:
The trapezoids are congruent if the corresponding sides of each trapezoid are equal
The option that gives the possible coordinates for the vertex I is the option;
(-4.5.-5)
Step-by-step explanation:
Please help me help please help
Answer:
-2
Step-by-step explanation:
2/(-1) = -2
rise is 2
run is -1 ( to the left)
It was recently estimated that homes without children outnumber homes with children by about nine to seven. If there are 4912 homes in a county, how many of them
are homes without children
Answer:
Answer:929
Step-by-step explanation:
Step-by-step explanation:For every 11 children, 7 will have homes
Jim has a bank account balance of $-15.46 as soon as he realizes this he deposit $25.50 in the account what is James bank account balance after the deposit is made
$10.4 maybe I don't really know
What’s the new function of g(x)
Answer:
The answer is the first one. It's also in my picture that I included
what adds up to positive 14 but multiplies to negative 147
Answer:
-7 x 21
this adds up to 14 and multiplies -147
Change each of the mixed numbers below into a fraction 1 3/8
Answer:
11/8
Step-by-step explanation:
1 3/8 = 1 + 3/8 = 1/1 + 3/8 = 8/8 + 3/8 = 11/8
Find the percent decrease. Round to the nearest percent.
From 138 pounds to 130 pounds
The percent decrease is %.
Answer: 6%
Step-by-step explanation:
so you find the normal decrease. which is 138-130, 8 pounds.
then you divide by the original weight, you get 5.979…% so then round it up and tada! 6%
what expression can be used to find the number of 6ths in 3 wholes?
Choose ALL the correct answers!!!
1/6*6
6 divided by 1
3*6
3 Divided by 1/6
1/6 divided by 1
Answer:
B. 3*6C. 3 divided by 1/6Step-by-step explanation:
Number of 1/6 in 1 is 6.
Number of 1/6 in 3 is:
3 ÷ (1/6) = 3*6 = 18Correct choices are B and C
There are 6 1/6 exist between 1 and 0
No of 1/6 between 3 wholes:-
[tex]\\ \sf\longmapsto 3\div \dfrac{1}{6}[/tex]
[tex]\\ \sf\longmapsto 3\times 6[/tex]
[tex]\\ \sf\longmapsto 18[/tex]
Options B and C
Question 3 of 10 Classify the following triangle. Check all that apply. 70° 15.8 8 80" 30 15 O A. Equilateral B. Obtuse C. Isosceles D. Right E. Acute F. Scalene
Answer:
the answer F or D
Step-by-step explanation:
Assume three cards are drawn in succession and without replacement from an ordinary
deck of 52 cards. Find the probability of drawing a jack, a non-face card, and another
jack, in that order.
O A. 0.00483
OB. 0.00362
O C. 0.00341
OD.0.01086
Answer:O A. 0.00483
Step-by-step explanation:
⦁ Explain how you could use the construction tool or a compass and straightedge to create a line segment that is twice as long as .
Answer:
u can be using it at perpendicular and place it's center on point A
hope that helps a bit-
It takes one Super Giant Pizza to feed 3 people. If you invite 36 people, how many pizzas will you need?
If it takes 1 pizza to feed 3 people and you invite 36 people, you can divide 36 by 3 to get the answer -
36/3 = 12
You will need 12 pizzas.
The polynomial x^3+ px^2-x-2 has x-1 as a factor. what is the value of p?
The polynomial [tex]x^3+ px^{2}-x-2[/tex] contains x - 1 as a factor.
The value of p = 2.
How to find the value of p?Given:
The polynomial [tex]x^3+ px^{2}-x-2[/tex] contains x - 1 as a factor.
Comparing x - 1 with x - a then
Substitute the value of x = 1, then we get
[tex]$1^3+p*1^2-1-2 = 0[/tex]
[tex]$1^{3}+p \cdot 1^{2}-1-2=0$$[/tex]
Apply rule [tex]$1^{a}=1$[/tex]
[tex]$&1^{3}=1,1^{2}=1 \\[/tex]
[tex]$&1+1 \cdot p-1-2=0[/tex]
Multiply: p-1 = p
1+p -1-2=0
Group like terms
p+1-1-2 = 0
Add/Subtract the numbers: 1-1-2 = -2
p-2 = 0
Add 2 to both sides
p-2+2 = 0+2
Simplify
p = 2
Therefore, the value of p = 2.
To learn more about polynomial function
https://brainly.com/question/11434122
#SPJ2
What 2 numbers have a total of 46 and a diffrence of 12
Answer:
29 and 17
Step-by-step explanation:
Sum: 29 + 17 = 46
Difference: 29 - 17 = 12
Answer:
The answer is 17 and 29.
17+29=46.
29-17=12
Given f(x)=2x+5, find f(1)
Answer:
2
Step-by-step explanation:
The Four-Digits Problem
Use the digits 1, 2, 3, and 4 to write expressions for the numbers
1 through 50. Each digit is used exactly once in each expression.
(There might be more than one expression for a given number.)
You can use addition, subtraction, multiplication and division, factorial, absolute
, exponents, and parentheses in any way you wish.
Answer:
praktik ko yctgv hujan hu bule
What is the slope of the line represented by the equation y = 4/5x - 3?
Help plz very urgent
Answer:
N+5
Step-by-step explanation:
4,9,14,19
4+5=9+5=14+5=19….
Order of operations
6 + 24 ÷ 3-2
Answer:
12
Step-by-step explanation:
(6+24÷3)−2
(6+8)−2
14−2
12
Answer:
12
Step-by-step explanation:
Which of the following does NOT have a unit price of $24 for one sweater?
$38 for 2 sweaters
$72 for 3 sweaters
$96 for 4 sweaters
$120 for 5 sweaters
Answer:
$38 for 2 sweaters
Step-by-step explanation:
$38 for 2 sweaters ---> $38/2 = $19
$72 for 3 sweaters
$96 for 4 sweaters
$120 for 5 sweaters
James bought a cak that had 1, 890 calories for 9 servings. What is the calories per serving the cake ?
Answer:
210 calories per serving
Step-by-step explanation:
