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4 years ago

10

juma earns 12.50 dollars for each newspaper subscription he sells.He also earns dollars base salary each week.if he wants to ear

n 400 dollars next week, how many newspaper subscriptions does he need to sell? write an equation and solve.

1 answer:

Klio2033 [76]4 years ago

3 0

B + 12.5x = 400, where b is the base salary and x is the amount of subscriptions he needs to sell.

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The angle turns through 1-9 of the circle

Diano4ka-milaya [45]

What does that mean I don't get it I will randomly guess 500000000

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4 years ago

if 3 is added to twice a number, the result is the difference of 4 times the number the number and 5.

Black_prince [1.1K]

Let, the number = x

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In short, the number would be: 4

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3 years ago

Read 2 more answers

Look at the function f(x)=x^2-2. Which of the following describes the domain and range of the function and its inverse?

anygoal [31]

Answer:

A

Step-by-step explanation:

The function is a quadratic whose graph is a parabola. All parabolas have no limitations on their domain. This means the domain of the function is all real numbers.

This parabola has a minimum value since its leading coefficient is positive. Its vertex is at (0,-2). This means its range is all values greater than -2 or y ≥ -2.

An inverse of a function is its reflection across the y=x line. This results in (x,y) in the function becoming (y,x) in its inverse. The domain of the function becomes the range of the inverse and the range of the function becomes the domain of the inverse. Inverse has x ≥ -2 as its domain and all real numbers for its range.

6 0

4 years ago

Please please help and explain!

artcher [175]

Answer:

440 Meters

Step-by-step explanation:

The question asks what his altitude was at the beginning, the beginning is the y-intercept and the y-intercept is 440 according to this graph so that's why the answer is 440.

8 0

3 years ago

A school authority claims that the average height of students is 178 cm. A researcher has taken a well-designed survey and his s

Hunter-Best [27]

Answer:

d) The difference exists due to chance since the test statistic is small

Step-by-step explanation:

From the given information:

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the sample mean = 177.5 cm

the standard deviation = 2

the sample size = 25

The null hypothesis and the alternative hypothesis can be computed as:

Null hypothesis:

$H_o: \mu = 178$

Alternative hypothesis:

$H_1: \mu \neq 178$

The t-test statistics is determined by using the formula:

$t = \dfrac{X - \mu}{\dfrac{\sigma}{\sqrt{n}}}$

$t = \dfrac{177.5 - 178}{\dfrac{2}{\sqrt{25}}}$

$t = \dfrac{-0.5}{\dfrac{2}{5}}}$

$\mathbf{t= -1.25}$

Degree of freedom df = n- 1

Degree of freedom df = 25 - 1

Degree of freedom df = 24

At the level of significance ∝ = 0.05, the critical value = 2.064

Decision rule: To reject the null hypothesis if the test statistics is greater than the critical value at 0.05 level of significance

Conclusion: We fail to reject the null hypothesis since the test statistics is lesser than the critical value and we conclude that the difference exists due to chance since the test statistic is small

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3 years ago