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3 years ago

If you clean and you make $12.50 an hour 8am to 8pm how much money do you earn

Mathematics

2 answers:

MissTica3 years ago

3 0

Hello!

Your answer will be $150! Hope this helps! :D

Ganezh [65]3 years ago

3 0

Answer:

150$

Step-by-step explanation:

If you take your total time (12 hours) and multiply it by the amount of money you make each hour, that makes $150$, here is the equation;

(first, we find how much time is between 8 am and 8 pm = 12 hours)
(Then we multiply it by the amount of money he made every hour = $12.50
Now we solve: 12*12.50=150, which means that he made 150$ an hour.

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X^2(x+7) = 1/2(14x^2 + 16)

zheka24 [161]

Answer:

Step-by-step explanation:

For these type of problems try your best to remove the exponents and fractions.

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3 years ago

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Solve AND graph the inequality below. −2x−4≤11

ankoles [38]

Answer:

$x\ge \:-\frac{15}{2}$

The graph of the inequality is attached below.

Step-by-step explanation:

Given the inequality

$-2x-4\le 11$

$\mathrm{Add\:}4\mathrm{\:to\:both\:sides}$

$-2x-4+4\le \:11+4$

$-2x\le \:15$

$\mathrm{Multiply\:both\:sides\:by\:-1\:\left(reverse\:the\:inequality\right)}$

$\left(-2x\right)\left(-1\right)\ge \:15\left(-1\right)$

$2x\ge \:-15$

$\mathrm{Divide\:both\:sides\:by\:}2$

$\frac{2x}{2}\ge \frac{-15}{2}$

$x\ge \:-\frac{15}{2}$

The graph of the inequality is attached below.

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3 years ago

How to convert decimals 0.6 to fraction and show the work?

Misha Larkins [42]

0.6

6/10 because there is only one number after the decimal.

6/10 - reduce

Divide by 2

6/2= 3

10/2= 5

Answer: 3/5

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3 years ago

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Question in picture

Norma-Jean [14]

Answer:

63 yd²

Step-by-step explanation:

The area (A) of a trapezoid is calculated as

A = $\frac{1}{2}$ h (a + b)

where a and b are the parallel bases and h the perpendicular height.

Here a = 8, b = 10 and h = 7, thus

A = 0.5 × 7 × (8 + 10) = 0.5 × 7 × 18 = 63 yd²

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3 years ago

News article reports that "Americans have differing views on two potentially inconvenient and invasive practices that airports c

OverLord2011 [107]

Answer:

1) p1=0.83

2) p2=0.81

3) Option B

4) p=0.82

5) s=0.03

6) z=0.67

7) P=0.50

8) Do not reject H0

Step-by-step explanation:

1) The proportion of Republicans who think the full-body scans should be applied in airports is equal to the ratio between the republicans that think it should over the total Republicans in the poll:

$p=X/n=258/311=0.83$

2) The proportion of Democrats who think the full-body scans should be applied in airports is equal to:

$p=X/n=294/363=0.81$

3) As we want to know if there is a difference in the proportions calculated, not if one is higher or lower than the other, the correct option is B:

$H_0:p_1-p_2=0\\\\H_a:p_1-p_2\neq0$

4) The pooled estimate of a proportion is the average of both proportions:

$\bar{p}=\frac{p_1+p_2}{2}= \frac{0.83+0.81}{2}=0.82$

5) The standard error can be calculated as:

$s=\sqrt{\frac{\bar{p}(1-\bar{p})}{n_1} +\frac{\bar{p}(1-\bar{p})}{n_2}} \\\\s=\sqrt{\frac{0.82*0.18}{311} +\frac{0.82*0.18}{363}} \\\\s=\sqrt{0.00047+0.00041} =\sqrt{0.00088}=0.03$

6) The z-statistic can be calculated as:

$z=\frac{p_1-p_2}{s}=\frac{0.83-0.81}{0.03}=\frac{0.02}{0.03}=0.67$

7) The P-value for z=0.67 is P=0.50 (from the standard normal distribution table).

$2P(Z>|z|)=0.50286$

8) If the significance level is 0.01, the P-value is bigger than the significance level. The effect is not significanct. The null hypothesis is not rejected.

There is not enough evidence to say that both proportions are different.

A. Do not reject H0

8 0

3 years ago