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const2013 [10]
3 years ago
9

Don has an album that holds 900 coins . Each page of the album holds 9 coins . If 78​% of the album is​ empty, how many pages ar

e filled with ​?
Mathematics
1 answer:
laila [671]3 years ago
3 0

Answer:  22% of the pages are filled up

Step-by-step explanation: 900/9= 100 78% of 100 is 78

22+78=100 therefore reaching 100 percent. since 78% is empty that means 22% is being used.

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What is the largest integer that can be divided into 14, 28 and 42?
Murljashka [212]

Answer:

<em><u>14</u></em> is the largest integer that can be divided into 14, 28 and 42.

Step-by-step explanation:

14 \times 1 = 14 \\ 14 \times 2 = 28 \\ 14 \times 3 = 42

5 0
3 years ago
Angles U and V are supplementary angles. The ratio of their measures is 7:13 Find the measure of each angle
GREYUIT [131]
If u and v are <span>supplementary angles, then

u+v=180^{\circ}~~~~~\mathbf{(i)}


The ratio of u and v is \dfrac{7}{13}:<span>

\dfrac{u}{v}=\dfrac{7}{13}\\\\\\ u=\dfrac{7v}{13}~~~~\mathbf{(ii)}


Substitute \mathbf{(ii)} into \mathbf{(i)}:

\dfrac{7v}{13}+v=180^{\circ}\\\\\\ \left(\dfrac{7}{13}+1 \right )\cdot v=180^{\circ}\\\\\\ \left(\dfrac{7}{13}+\dfrac{13}{13} \right )\cdot v=180^{\circ}\\\\\\ \dfrac{20}{13}\cdot v=180^{\circ}\\\\\\ v=180^{\circ}\cdot \dfrac{13}{20}\\\\\\ \boxed{\begin{array}{c} v=117^{\circ} \end{array}}


From \mathbf{(i)}, we find the measure of u:

u=180^{\circ}-v\\\\ u=180^{\circ}-117^{\circ}\\\\ \boxed{\begin{array}{c} u=63^{\circ} \end{array}}

</span></span>
7 0
3 years ago
HELP! What is the value of X in the following parallelogram? WILL GIVE BRAINLIEST!
zavuch27 [327]

Answer:

x = 2

Step-by-step explanation:

<u>Step 1:  Set 3x - 2 equal to 5x - 6 to get x</u>

3x - 2 = 5x - 6

<u>Step 2:  Solve for x</u>

3x - 2 + 6 - 3x = 5x - 6 + 6 - 3x

4 / 2 = 2x / 2

2 = x

Answer:  x = 2

8 0
3 years ago
Read 2 more answers
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Murljashka [212]
D=2n
.05n+.1d=3.5
I multiplied the nickels and dimes by these values because that is their actual monetary value 
.05n=3.5-.1d
multiply everything by 20
n=70-2d
d/2=70-2d
.5d+2d=70 
2.5d=70
d=28 
n=14 
so there are <u>28 dimes and 14 nickels 
</u>
checking this answer 
28 dimes = $2.8
14 nickels = .70
2.8+.7=3.5

3 0
4 years ago
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The nine cats in a pet store were weighed. Their weights (in pounds) are given below.
stepladder [879]
Range is 6 and the mode is 8
6 0
4 years ago
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