3 years ago

ASAP please i need help

Mathematics

1 answer:

Alla [95]3 years ago

5 0

Answer:

1 hr 20 min.

Step-by-step explanation:

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If 2x+5=12 for some value of X,then what does 6x+20 equal

Arte-miy333 [17]

2x+5=12
2x=7
x=3.5
3.5*6=21
21+20=41

Hope this helps :)

4 0

3 years ago

Read 2 more answers

The rectangle below has an area of 81-x^2 square meters and a width of 9-x meters. What expression represents the length of the

oksian1 [2.3K]

For this case we have that by definition, the area of a rectangle is given by:

$A = w * l$

Where:

w: Is the width of the rectangle

l: is the length of the rectangle

According to the data of the statement we have:

$A = 81-x ^ 2\\w = 9-x$

So, the length is given by:

$l = \frac {A} {w}\\l = \frac {81-x ^ 2} {9-x}$

We factor the numerator:

$l = \frac {(9 + x) (9-x)} {9-x}$

We simplify:

$l = 9 + x$

So, the length is $9 + x$

Answer:

$9 + x$

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3 years ago

4. f(x) =-2x+7 Find Range

vlada-n [284]

It’s gonna be all real numbers (-infinity, infinity) because it goes through all the points. And because there’s no restrictions

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3 years ago

F(x) → 4x - 7. Find f(9)

Dvinal [7]

Answer:

Step-by-step explanation:

f(x) = 4x -7

f(9) = 4(9)-7

=36-7

=29

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3 years ago

Question 18.

DENIUS [597]

Answer: c

Step-by-step explanation:

sampling variability is the difference between the measured value of the random sample and the mean age of the population

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