What is the degree measure of z?

James answered 14 items correctly on a 16-item quiz. what percent did he answer correctly?

Troyanec [42]

So,

I like to simplify a fraction first. This is what I do when I'm in a store trying to find the unit price.

$\frac{14}{16}$

Factor.
$\frac{2*7}{2*2*2*2}$

Cross out ones.
$\frac{7}{2*2*2}$

Multiply it out.
$\frac{7}{8}$

In my head, I remember that one-eighth is equal to 0.125.

So seven-eighths is equal to 0.125 times 7.
0.125 * 7 = 0.875

Convert to percent form.
0.875 --> 87.5%

James answered 87.5% of his quiz correctly.

I actually have the decimal equivalents for eighths in my head when I'm shopping. So once I get seven-eighths, I immediately know how much that is. I can also subtract 0.125 from 1.000 to get seven-eighths.

3 0

3 years ago

Read 2 more answers

X + (-9) + 9 = 8 solve the equation using mental math

Studentka2010 [4]

Answer:

X=8 simplify equation

Step-by-step explanation:

-9+9=0

8 0

3 years ago

What is the greatest common factor of 63b^2c^4 and 42b^3c^2

Arte-miy333 [17]

Factor out the GCF of

21

b

2

c

2

from

63

b

2

c

4

+

42

b

3

c

2

.

Tap for fewer steps...

Factor out the GCF of

21

b

2

c

2

from each term in the polynomial.

Tap for fewer steps...

Factor out the GCF of

21

b

2

c

2

from the expression

63

b

2

c

4

.

21

b

2

c

2

(

3

c

2

)

+

42

b

3

c

2

Factor out the GCF of

21

b

2

c

2

from the expression

42

b

3

c

2

.

21

b

2

c

2

(

3

c

2

)

+

21

b

2

c

2

(

2

b

)

Since all the terms share a common factor of

21

b

2

c

2

, it can be factored out of each term.

21

b

2

c

2

(

3

c

2

+

2

b

)

The greatest common factor

GCF

is the term in front of the factored expression.

21

b

2

c

2

6 0

3 years ago

Read 2 more answers

A football team lost 4 yards on each of 2 plays, gained 14 yards on the third play, and lost 5 yards on the forth play. Write an

yanalaym [24]

2 x -4 + 14 - 5
-8 +14 - 5
6 - 5
1

3 0

3 years ago

Find the missing lengths m and n in the rectangular prism.

Sav [38]

Answer:

where is the picture???

what are the given lengths?

4 0

2 years ago