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Anastasy [175]
3 years ago
5

Solve for d. 9d − 8d = 16 d =

Mathematics
1 answer:
timurjin [86]3 years ago
3 0
D = 16

you would collect the terms
(9-8)x = 16

1x = 16


x = 16
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The mean amount of money spent on lunch per week for a sample of 100 students is $21. If the margin of error for the population
Digiron [165]

From the given mean and margin of error, the 99% confidence interval for the mean amount of money spent on lunch per week for all students is:

[$19.5, $22.5].

<h3>How to calculate a confidence interval given the sample mean and the margin of error?</h3>

The confidence interval is given by the sample mean plus/minus the margin of error, hence:

  • The lower bound is the sample mean subtracted by the margin of error.
  • The upper bound is the sample mean added to the margin of error.

For this problem, we have that:

  • The sample mean is of $21.
  • The margin of error is of $1.50.

Hence the bounds are given as follows:

  • Lower bound: 21 - 1.50 = $19.50.
  • Upper bound: 21 + 1.50 = $22.50.

Hence the interval is [$19.50, $22.50].

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7 0
1 year ago
From net earnings of $740 per month for the rent on an apartment she says the two friends what percent of income is her rent pay
Gwar [14]
<span>$200 / $740 *100% = 27%

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5 0
3 years ago
An angle measure 20 more than the measure of its supplementary angle.What is the measure of each angle?
SOVA2 [1]

Based on the definition of supplementary angles, the measure of both angles are: 80° and 100°.

<h3>What are Supplementary Angles?</h3>

The sum of angles that are supplementary to each other equals 180 degrees.

Let the measure of the supplementary angle be x.

The other angle will be: x + 20.

(x + 20) + x = 180

x + 20 + x = 180

2x + 20 = 180

2x = 180 - 20

2x = 160

x = 160/2

x = 80°

The other angle will be x + 20 = 80 + 20 = 100°.

The measure of the angles are: 80° and 100°.

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4 0
2 years ago
Tens+one=76tens+one=50
Rufina [12.5K]
Tens=7 Ones=6   Tens=5 Ones=0
8 0
3 years ago
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Encuentra los ángulos que se piden en la siguiente figura y el área de la figura marcada.
Tema [17]

Answer:

English for fast response

3 0
3 years ago
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