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3 years ago

Write and evaluate the expression. Then, check all that apply.

Mathematics

1 answer:

dlinn [17]3 years ago

8 0

Answer:

a-90

=102-90

=12

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The total of 36 78 198 475 and 620

Alina [70]

The total of,
36
78
198
475
+620
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=1407

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2 years ago

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The perimeter of a rectangle must be less than 156 feet. If the length is known to be 66 feet, find the range of possible widths

balu736 [363]

x = perimeter

x<156

length = 66

so, in order to calculate perimeter you need to add two lengths and two widths

156 (perimeter) - 2 (66) = two widths

156 - 132 = 24 (remember this number is two widths added together)

so 24 twice the width SO 12 would be the number that the width can't be larger than

the width has to be less than 12

w < 12

5 0

2 years ago

The total amount of money, m, earned by washing cars at a school fundraiser is proportional to the number of cars, c, washed at

vaieri [72.5K]

M=c•p

multiplying the prince by the number of cars washed will give you the total amount of money the school has raised

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2 years ago

PLS HELP, AM BEING TIMED, WILL give brainliest and it's a test

barxatty [35]

C is your answer i hope u got it right

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2 years ago

For the following pair of functions, find (f+g)(x) and (f-g)(x).

ch4aika [34]

Given:

The functions are

$f(x)=4x^2+7x-5$

$g(x)=-9x^2+4x-13$

To find:

The functions $(f+g)(x)$ and $(f-g)(x)$ .

Solution:

We know that,

$(f+g)(x)=f(x)+g(x)$

$(f+g)(x)=4x^2+7x-5-9x^2+4x-13$

$(f+g)(x)=(4x^2-9x^2)+(7x+4x)+(-5-13)$

$(f+g)(x)=-5x^2+11x-18$

And,

$(f-g)(x)=f(x)-g(x)$

$(f-g)(x)=(4x^2+7x-5)-(-9x^2+4x-13)$

$(f+g)(x)=4x^2+7x-5+9x^2-4x+13$

$(f+g)(x)=(4x^2+9x^2)+(7x-4x)+(-5+13)$

$(f-g)(x)=13x^2+3x+8$

Therefore, the required functions are $(f+g)(x)=-5x^2+11x-18$

and $(f-g)(x)=13x^2+3x+8$ .

7 0

3 years ago