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3 years ago

Simplify -(9w^3+3z+4) -2 (-7z-5w^3)

Mathematics

1 answer:

Arada [10]3 years ago

8 0

Answer:

w^3 + 11z - 4

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Use Pythagorean theorem to find right triangle si

zimovet [89]

Answer:

i do not know

Step-by-step explanation:

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2 years ago

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Which represents the solution(s) of the system of equations, y = x2 – 2x – 15 and y = 8x – 40? Determine the solution set algebr

almond37 [142]

Answer:

(5, 0 )

Step-by-step explanation:

Given the 2 equations

y = x² - 2x - 15 → (1)

y = 8x - 40 → (2)

Substitute y = x² - 2x - 15 into (2)

x² - 2x - 15 = 8x - 40 ( subtract 8x - 40 from both sides )

x² - 10x + 25 = 0 ← in standard form

(x - 5)² = 0 ← in factored form, thus

x - 5 = 0 ⇒ x = 5

Substitute x = 5 into (2) for corresponding value of y

y = 8(5) - 40 = 40 - 40 = 0

Solution is (5, 0 )

3 0

3 years ago

Find the area of the figure. Use 3.14 for A. N 8 m 12 m<br>

dsp73

Answer: <u>105m²</u>

Formula for Area of Circle: A = π r²

so, A = 3.14 (6)² (I got 6 because radius is half the diameter)

Don't forget to divide the final area of the circle in half, because It's only a semicircle.

Formula for Triangle: A = $\frac{bh}{2\\}$

so, A = $\frac{6(8)}{2}$ (again, the "6" is just the diameter divided in half which forms the base of ONE triangle.)

You need to multiply the final area of the triangle by 2 since there are 2 triangles.

Step-by-step explanation:

Cos Milky said it. Trust Milky. Milky smart.

8 0

3 years ago

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in geotown, there are 210 own a tablet. This is at least 4/5 of all teenagers that live in geotown. What is the maximum number o

sergiy2304 [10]

210 = 4/5 (This means that 4 out of five people (210 people) are a teenager)

Then you divide 210 by the numerator to get 1/5 people:
210 / 4 = 52.5

Then you can multiply the 1/5 people (52.5) by 5 to get 5/5:
52.5 * 5 = 262.5 (rounded to 262)

Thus the maximum amount of teenagers in Geotown is 262.

Hope this helps! :)

4 0

3 years ago

Write an equation of each sentence. Use n to represent the unknown number. You can use the back page for your solution. (2 point

marysya [2.9K]

<h3><u>Answer:</u></h3>

11. 6 + n = 20
12. n - 7 = 20
13. n + n + 1 = 31
14. 2n + 2 = 13
15. n - 1 = 18
16. n² + 4 = 2x
17. 2n = 1/2
18. n²/2 = 18
19. n/2 + 90/2 = 70
20. 2 + n = 12

Hoped this helped.

$-BrainaicUser1357-$

7 0

2 years ago

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