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earnstyle [38]
3 years ago
14

Break apart the array to show 5X7=(5X2) (5X5)

Mathematics
2 answers:
shtirl [24]3 years ago
8 0
Add an + in between 5x5 and 5x2
KonstantinChe [14]3 years ago
7 0
5×7=35 and 5×2=10 and 5×5=25 and 25+10=35 so you add a + between (5×2) and (5×5)
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A box contains 500 apples. 32% are rotten. How many rotten apples are there?
ziro4ka [17]
Lets find 32% of 500.

32/100 = .32

.32 * 500 = 160

Answer: 160 apples are rotten. 
6 0
4 years ago
Read 2 more answers
If cos x=8/17, and 270° &lt; x &lt; 360°<br> what is cos(2x)?
svp [43]

Answer:  \bold{-\dfrac{161}{289}}

<u>Step-by-step explanation:</u>

Given: cos x = \dfrac{8}{17}, x is in Quadrant 4

Use Pythagorean Theorem to find sin x:

8² + y² = 17²    

      y² = 17² - 8²

      y² = 289 - 64

      y² = 225

      y = 15

→    sin x = -\dfrac{15}{17}

Use the double angle formula to find cos (2x):

cos (2x) = cos^2 x - sin^2 x\\\\.\qquad=\bigg(\dfrac{8}{17}\bigg)^2-\bigg(-\dfrac{15}{17}\bigg)^2\\\\\\.\qquad=\dfrac{64}{289}-\dfrac{225}{289}\\\\\\.\qquad=-\dfrac{161}{289}

             

8 0
4 years ago
Read 2 more answers
Solve for x. <br> x/9 = -5
arlik [135]
X=-45 hope that helps!
8 0
3 years ago
Read 2 more answers
A square classroom has a wall that is 21 feet long. What is the area of the classroom?
Rasek [7]

<u>Answer and Step-by-Step explaination:</u>

Area =Length time Width

Area= 21*21

Area=441

6 0
3 years ago
Can someone help me? ​
Oliga [24]
52-13=39
39/52x100=75
The percent of markdown: 75%
5 0
2 years ago
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