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Ronch [10]
3 years ago
13

What is an expressions that are equivalent to 7(3c).

Mathematics
1 answer:
ra1l [238]3 years ago
5 0

Well, there are lots, but if you get rid of the parenthesis...

you would get 21c and that equals to 7(3c).

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An anthropologist studies a woman's femur that was uncovered in Madagascar. To estimate the woman's height, he uses the equation
Lelu [443]

Answer:

The inequality f>40 represents the length of the femur for which the woman had a height greater than 160cm.

Step-by-step explanation:

The given equation is

h=60+2.5f

Where, h is woman's height in centimeters and f is length of the femur in centimeters.

If woman's height is greater than 160cm, then

h>160

60+2.5f>160

Substract 60 from both sides.

2.5f>100

Divide both sides by 2.5.

f>40

Therefore the inequality  f>40 represents the lengths of the femur for which the woman had a height greater than 160cm.

5 0
3 years ago
10. 2x + 7y = 1<br> 2x - 4y = 12<br> Solve for y
adoni [48]

Answer:

The solution for y = -1.

Step-by-step explanation:

Given:

2x\ +\ 7y\ =\ 1    ....(1)

2x\ -\ 4y\ =\ 12  ....(2)

So, to solve for y, first we solve for x in equation (2):

2x-4y=12

⇒2x=12+4y

Dividing both sides by 2,

⇒x=6+2y            

Now, substituting the value of x  in equation (1):

2x+7y=1

⇒2(6+2y)+7y=1

⇒12+4y+7y=1

⇒12+11y=1

⇒11y=1-12

⇒11y=-11

Dividing both sides by 11,

⇒y=-1

Therefore, the solution for y = -1.

7 0
3 years ago
Just want to check to make sure this is right. I got 81 as the average so D seemed right.
sergiy2304 [10]
Im not 100% sure but im pretty sure you are right brother! God bless...Good luck!
6 0
3 years ago
What are the domain and range of the function f(x) = 4(3/81)*?
Ulleksa [173]

Answer:108

Step-by-step explanation: divided 81 and 3. the answer is 27. multiply 27 x 4 you get 108.

8 0
3 years ago
Help me with this :))))
Crank

Answer:

answer is 11.9...... have a good day

6 0
3 years ago
Read 2 more answers
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