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4 years ago

Fill in the blanks to complete the steps.

Mathematics

1 answer:

Art [367]4 years ago

7 0

Step 1) you should put 8 to fill in the blacks

step2) It is 300

step3)167.467

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I need help can I have how to do it and some work so I can do it.

Rufina [12.5K]

Answer:

cant see it post another

Step-by-step explanation:

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3 years ago

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Melanie spent four hours babysitting. She charges $16 up front and then an additional charge per hour. The total amount she earn

Sergeu [11.5K]

Answer:

She earns $4 x is representing the hours.

Step-by-step explanation:

16 is the charge up front.

I can infer that the additional charge is $4 because x represents the hours because we don't know how many hours she's going to spend there.

Hope this helps! <3

7 0

3 years ago

Someone pelase help me!!!!

Art [367]

Answer:

$\boxed{\bold{True}}$

Step By Step Explanation:

Equation One:

Multiply Both Sides By One (Reverse The Inequality)

$\bold{\left(-\frac{2}{5}x\right)\left(-1\right)$

Simplify

$\bold{\frac{2}{5}x$

Multiply Both Sides By 5

$\bold{5\cdot \frac{2}{5}x$

Simplify

$\bold{2x$

Divide Both Sides By 2

$\bold{\frac{2x}{2}$

Simplify

$\bold{x$

-------

Equation Two:

Subtract $\bold{\frac{3}{4} }$ From Both Sides

$\bold{-x+\frac{3}{4}-\frac{3}{4}$

Simplify

$\bold{-x$

Multiply Both Sides By -1 (Reverse The Inequality)

$\bold{\left(-x\right)\left(-1\right)>\frac{37\left(-1\right)}{4}}$

Simplify

$\bold{x>-\frac{37}{4}}$

8 0

3 years ago

How do you solve: 81 X 9^(-2b-2)=27

Dominik [7]

Did you mean

81* 9∧(-2b-2)=27 => First divide whole equation with 81 and get

(3∧2)∧(-2b-2)=1/3 => 3∧(-4b-4)=3∧(-1) => -4b-4=-1 => -4b= -1+4 => -4b=3 =>

we will multiply whole equation with (-1) and get 4b=-3 => b=-(3/4)

If the start item is correct.

Good luck!!!

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3 years ago

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10.A noted psychic was tested for ESP. The psychic was presented with 200 cards face down and askedto determine if the card was

lions [1.4K]

Answer:

Step-by-step explanation:

The sample proportion $\hat p = \dfrac{50}{200}$

$\hat p = 0.25$

The null hypothesis and the alternative hypothesis:

$H_o: p = 0.20 \\ \\ H_1 : p > 0.20$

Thus; the test statistics is:

$Z = \dfrac{\hat p - p_o}{\dfrac{p_o(1-p_o)}{n} }$

$Z = \dfrac{0.25 -0.20}{\sqrt{\dfrac{0.20(1-0.20)}{200} }}$

$Z = \dfrac{0.05}{\sqrt{\dfrac{0.16}{200} }}$

$Z = \dfrac{0.05}{\sqrt{0.0008 }}$

$Z = 1.768$

P-value = 2 × P(Z< - 1.768)

From the z tables

P-value = 2 × 0.03853

P-value = 0.07706

Thus, the p-value is 0.05 < P-value < 0.10

8 0

3 years ago