3 years ago

Amber Scored 5 points more than Hope on a class test. If they scored a total of 153 points, what was Ambers Score?

Mathematics

2 answers:

MArishka [77]3 years ago

4 0

The answer is 148 to this qestion

mestny [16]3 years ago

4 0

Amber scored 79 and Hope scored 74

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For a recent project, a teacher purchased 250 pieces of red construction paper and 114 pieces of blue construction paper. What i

Kay [80]

Just divide and find the ratio ;

red to blue
250:114

125:57.......as the answer !!

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3 years ago

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What is the equation of the axis of symmetry for the function shown below?

Gennadij [26K]

Answer:

x=2

Step-by-step explanation:

The axis of symmetry can be calculated using the following formula:

$Xv= \frac{-b}{2a}$

In order to use this formula, we need to have the function written in it's polynomial formula:

$f(x)=ax^{2} +bx+c$

In order to do so, we have to isolate Y from the excercise's formula.

$y=-2(x-2)^2-5$

Then we resolve the square of the binomial knowing that (a+b)^2=a^2+2.a.b+b^2

$(x-2)^2= x^2+2.x.(-2)+(-2)^2$

$(x-2)^2= x^2-4x+4$

Now we have that:

$y=-2.(x^2-4x+4)-5$

$y=-2x^2+8x-8-5$

$y=-2x^2+8x-13$

As we have now the polynomyal formula, we know that a=-2, b=8 and c=-13. We supplant on the formula and get:

$Xv= \frac{-b}{2a}$

$Xv= \frac{-8}{2.(-2)}$

$Xv= \frac{-8}{-4)}$

$Xv= 2$

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4 years ago

If f(x)= 15x+7x and g(x)= x^2-5x, find (f+g)(x)

cupoosta [38]

Answer:

(f+g)(x) = x^2 +10x +7

Step-by-step explanation:

(f+g)(x) = f(x) +g(x) = (15x +7) +(x^2 -5x)

= x^2 +x(15 -5) +7

= x^2 +10x +7

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4 years ago

2. A parking lot holds 40 cars. There are 20 cars in the lot already. Which inequality can be solved to show all the

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C I need to put 20 letters so yea the answer is C

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3 years ago

Nine less than the product of 4 and a number is 23

borishaifa [10]

Step-by-step explanation:

4x - 9 = 23

4x = 32

x = 8

the number is 8.

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3 years ago

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