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2 years ago

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What is the derivative of -5

1 answer:

ololo11 [35]2 years ago

8 0

The derivative of constant numbers is zero.

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3.) Duncan spent $70 and now has<br> $120. How much money did he have<br> before spending the 70?

frosja888 [35]

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He started with $190

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2 years ago

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Write the number name for 43,080,700

Likurg_2 [28]

Forty three million, eighty thousand, seven hundred

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3 years ago

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In a geometric series each term is 21% less than previous term what is the value of r for this geometric series

motikmotik

To get a number to decrease by 21% you multiply it by 0.79 (1-0.21)
r = 0.79

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3 years ago

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g You flip the coin 200 times and observed 80 Heads. Recall from the problem Hypothesis Testing: A Sample Data Set of Coin Flips

Mrrafil [7]

Answer:

Step-by-step explanation:

To be able to draw a conclusion from the data given, lets find out the p value using the t score and this will be used to make a conclusion.

If the p value is less than 0.05 then, we will reject the null but if otherwise we will fail to reject the null.

Using a p value calculator with a t score of 2.83, significance level 0.05 and the test is a two tailed test, the p value is 0.004655 which is less than 0.05 and the result is significant.

This we will reject the null hypothesis H0:p∗=1/2 for this data set.

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3 years ago

Tony used a photocopier to dilate the design for a monorail track system. The figure below shows the design and its photocopy

Darina [25.2K]

Answer:

12 m

Step-by-step explanation:

Given that the design, ABCD, was dilated to get a photocopy, EFGH, a scale factor or ratio was multiplied by the original lengths of the design to get the new measurement of the photocopy.

Thus, we are given the ratio, CD:GH = 2:3.

This means, any of the corresponding lengths of both figures would be in that same ratio.

Using the ratio of the design to the photocopy, 2:3, we can find the length of side EH of the photocopy.

The corresponding side of EH in the design is AD = 8m. Thus, AD to EH = ⅔

$\frac{AD}{EH} = \frac{2}{3}$

$\frac{8}{EH} = \frac{2}{3}$

Cross multiply

$3*8 = 2*EH$

$24 = 2*EH$

Divide both sides by 2 to make EH the subject of formula

$\frac{24}{2} = \frac{2*EH}{2}$

$12 = EH$

The length of side EH = 12 m

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2 years ago