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Anna007 [38]
3 years ago
13

Factor completely.

Mathematics
1 answer:
riadik2000 [5.3K]3 years ago
7 0

25a⁴ - 10a²z² - 8z⁴  <em>multiply 25*-8 = -200 to find factors (10*-20 = 200), (10 - 20 = -10)</em>

25a⁴ + 10a²z²    - 20a²z² - 8z⁴     <em>factor the left two and right two terms</em>

5a²(5a² + 2z²)    -4z²(5a² + 2z²)   <em>one factor from each side should be identical</em>

= (5a² - 4z²)(5a² + 2z²)


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What percent of 43.75 is 70
murzikaleks [220]
62.5%
What I did was divided 43.75 by 70 to get 0.625.
Then I moved the decimal over two places to the right to get 62.5. 
7 0
3 years ago
4. Kiran says "If I walk 3 miles per hour toward you, and you walk 3.4 miles per hour toward me,
Kitty [74]

Answer:

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Step-by-step explanation:

6 0
3 years ago
tomas is thinking of a number. If he triples his number and subtracts 13 the result is 305. Of what number is tomas thinking
dezoksy [38]
3x-13=305

3x=305+13

3x=318

(3x)÷3=318÷3

x=106

check.. (3×106)-13=305

318-13=305

305=305



7 0
3 years ago
Read 2 more answers
2 + 10 = 24<br>3 + 6 = 27<br>7 + 2 = 63<br>5 + 3 = ????​
True [87]
  • Answer:

<em>40</em>

  • Step-by-step explanation:

<em>2 + 10 = 24</em>

<em>2(2 + 10) = 2×12 = 24</em>

<em>3 + 6 = 27</em>

<em>3(3 + 6) = 3×9 = 27</em>

<em>7 + 2 = 63</em>

<em>7(7 + 2) = 7×9 = 63</em>

<em>5 + 3 = 40</em>

<em>5(5 + 3) = 5×8 = 40</em>

7 0
3 years ago
Please math help and please show work!
Galina-37 [17]
Since they are similar triangles, they are just enlarged versions of each other. This means that the left-most angle of triangle XYZ is also 35°.

Angles in a triangle add up to 180°, so we can find the missing angle by subtracting the two known angles from 180.

180 - 70 - 35 = 75
The right-most angle of triangle XYZ would be 75°.

Hope this helps!
6 0
3 years ago
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