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3 years ago

What is a requirement of a complimentary angle

Mathematics

1 answer:

iren [92.7K]3 years ago

8 0

two angles are complementary when the sum of them is equal to 90 degrees

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Jackson Stationary sells cards in packs of 10 and envelopes in packs of 12. If Kina wants the same number of each, what is the m

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143

Step-by-step explanation:

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3 years ago

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Show full work to factor 2x² + 5x-7

Paraphin [41]

Answer:

(2x+7)(x-1)

Step-by-step explanation:

2x²+5x-7

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x(2x+7)-1(2x+7)

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3 years ago

confirm or disprove ernest's work by selecting two different points and applying the slope formula. be sure to identify the poin

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Answer:

Part a) Ernest's calculation was correct

Part b) Ernest's calculation was correct

Step-by-step explanation:

The picture of the question in the attached figure

The complete question is

Ernest calculated the slope of the graph during the uphill climb to be 10. His work is shown below.

Points: (60.900). (15, 450)

Slope : 900-450/60-15=450/45=10

Part a) Determine whether his calculation was correct or incorrect, and then explain why.

Part b) Confirm or disprove Ernest's work by selecting two different points and applying the slope formula. be sure to identify the points you chose

Part a)

we know that

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

we have the points

A(60,900),B(15,450)

Remember that

$m_A_B=m_B_A$

step 1

Find $m_A_B$

substitute in the formula

$m_A_B=\frac{450-900}{15-60}\\\\m_A_B=\frac{-450}{-45}=10$

step 2

Find $m_B_A$

substitute in the formula

$m_B_A=\frac{900-450}{60-15}\\\\m_B_A=\frac{450}{45}=10$

therefore

Ernest's calculation was correct, because $m_A_B=m_B_A$

Part b) selecting two different points

we take the points

(0,300) and (50,800) -----> see the attached figure

substitute in the formula of slope

$m=\frac{800-300}{50-0}$

$m=\frac{500}{50}$

$m=10$

therefore

Ernest's calculation was correct

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3 years ago

Timothy wants to build a deck with a length that is 4 less than twice its width and an area that is at least 140 square feet. Wh

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Answer:

2w^2 - 4w > 140

Step-by-step explanation:

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3 years ago

A snack box contains at most 7 ounces of cheese. Fiona says the amount of cheese can be represented by 2x - 3. Which graph shows

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The function representing the number of ounces is:
2x - 3
Now, we are given the number of ounces = 7
Therefore:
2x - 3 = 7
We will solve this equation for x as follows:
2x-3 = 7
2x = 7 + 3
2x = 10
x = 5

Therefore, the number line representing this function will be the line having a solution ending at 5 (5 is included).

Therefore, the correct choice would be line B

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4 years ago