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3 years ago

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Mathematics

2 answers:

Blababa [14]3 years ago

7 0

Answer:

39.2

Step-by-step explanation:

Monica [59]3 years ago

4 0

Answer:

0.28 goes in the blank

Step-by-step explanation:

0.28 x 140 = 39.2

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Solve 8.2 w less-than-or-equal-to 29.52. Which of the following must be true about the inequality and the resulting graph? Selec

RSB [31]

Answer:

A,B,E

Step-by-step explanation:

Divide both sides by 8.2

Correct choices:

w ≤ 3.6 

The arrow points left.

There is a closed circle at 3.6.

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3 years ago

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Given f (x) = 3x+4, find f (2)

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f(x) = 4x + 4 means that if we put an x into our function, a 3x + 4 come out.

So in this problem, we're putting a 2 into our function which

means that a 3(2) + 1 comes out which simplifies to 6 + 1 or 7.

So f(2) = 7 or the value of the function at 2 equals 7.

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Is One four-ounce shot of vanilla extract really equal to drinking four shots of vodka??

Nadya [2.5K]

Answer: no

Step-by-step explanation:

vanilla extract only has a little bit of alcohol in it so it does not equal four shots off vodka

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3 years ago

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

yan [13]

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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When measuring forecast error, which forecasting error expresses the forecast error as a percentage from the mean?

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Mean Absolute Percent Error, MAPE

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