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2 years ago

Select the correct answer from each drop-down menu.

Mathematics

1 answer:

fomenos2 years ago

6 0

Step-by-step explanation:

$(x - 2) {?}^{2} + (y + 3) { = 18}$

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F(x) = x^2 + 8x + 15; Find f(-14/5)

mamaluj [8]

Answer:

either 449/25 or 11/25 depends on the -14/5 or

Step-by-step explanation:

$- \frac{14}{25} or \: \frac{ - 14}{25}$

if it the first one then the answer should be 449/25 but if ut the second one it should be 11/25 .

u just substitute the -14/5 to x then solve

7 0

2 years ago

Which of the following equations shows how substitution can be used to solve

maxonik [38]

Answer: Choice B)

2x+5(2x+3) = 3

============================================

Reasoning:

We start with the second equation 2x+5y = 3

Since y = 2x+3 from the first equation, we can replace every copy of y with (2x+3). This replacement is valid because y and 2x+3 are the same.

So that's how we go from 2x+5y = 3 to 2x+5(2x+3) = 3

This replacement is done to get rid of the y variable, and it allows us to solve for x later on.

3 0

3 years ago

Rewrite the function by completing the square. f(x)= x^{2} -9 x +14f(x)=x 2 −9x+14

Bess [88]

Answer:

$f(x)=(x-4.5)^{2}-6.25$ or $f(x)=(1/4)(2x-9)^{2}-6.25$

Step-by-step explanation:

we have

$f(x)=x^{2}-9x+14$

Group terms that contain the same variable, and move the constant to the opposite side of the equation

$f(x)-14=x^{2}-9x$

Complete the square. Remember to balance the equation by adding the same constants to each side

$f(x)-14+4.5^{2}=x^{2}-9x+4.5^{2}$

$f(x)+6.25=x^{2}-9x+4.5^{2}$

Rewrite as perfect squares

$f(x)+6.25=(x-4.5)^{2}$

$f(x)=(x-4.5)^{2}-6.25$

$f(x)=(1/4)(2x-9)^{2}-6.25$

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3 years ago

A teacher records the test scores of several students. Find the median (middle) score. 80, 72, 76, 71, 75, 78, 72, 74, 82,70

vovangra [49]

Answer:

76.5

Step-by-step explanation:

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4 years ago

Geometry 10 long 2.75 wide triangle what is the area?

VladimirAG [237]

I believe the answer would be 13.75 but i’m not completely sure on this so correct me if i’m wrong

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3 years ago