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Delvig [45]
3 years ago
5

Which expression represents each mathematical phrase?

Mathematics
1 answer:
vova2212 [387]3 years ago
4 0

Answer:

(1) = (e) 7x. (2) = (b) 7+x. (3) = (d) x-7. (4) = (c) 2x+7

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Need help with this asap!
Brums [2.3K]

Answer:

The answer to your question is   b = 8.06 cm

Step-by-step explanation:

Data

hypotenuse = c = 9 cm

long leg = b = ?

short leg = a = 4 cm

Process

This is a right triangle so we must use the Pythagorean theorem to find the length of the long leg (b)

                      c² = a² + b²

-Solve for b²

                      b² = c² - a²

-Substitution

                      b² = 9² - 4²

-Simplification

                       b² = 81 - 16

                       b² = 65

-Result

                      b = 8.06 cm

4 0
3 years ago
Read 2 more answers
PLEASE HELP!
hammer [34]

Answer:

  A = 16

Step-by-step explanation:

Taken together, the triangles form a square whose side length is 4. The area is ...

  A = s² = 4²

  A = 16

6 0
3 years ago
Read 2 more answers
If sin x = .42, what is cos x?
34kurt
From the identity,
sin^2(x)+cos^2(x)=1
then 
cos(x)=sqrt(1-sin^2(x))
where sin(x) is given as 0.42.

Note that the above answer applies to 0<x<90 degrees
6 0
3 years ago
The area is approximately __ square units,.<br><br> use 3.14 for pi
fenix001 [56]
757 units squared. Here is work:

7 0
2 years ago
The land area of Charlotte, NC is approximately 3 x 102 square miles. There are 6.4 x 102 square acres in a square mile. How man
Murrr4er [49]

Answer:

2.13 X 104 square acres

Step-by-step explanation:

Divide 6.4 acres by 3 miles = factor of 2.13

Therefore the answer must be 2.13 X 104 square acres

5 0
3 years ago
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