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3 years ago

PLS HELP ME ASAP FOR 7. A and B! (SHOW WORK!!!) + lots of points

Mathematics

1 answer:

Over [174]3 years ago

3 0

So...
ANS of
7(a)=(30)+(n x 20) {n=n. of hours}

7(b)= with my mind

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Solve the following absolute value equation.

dolphi86 [110]

Hey there!

$|\displaystyle\frac{x-1}{2} |=7$

Let's say that x-1 is negative:

$\displaystyle\frac{-x+1}{2} =7$

The first step is to multiply both sides by 2:

$\text{-x+1=14}$

Now, move 1 to the right, using the opposite operation:

$\text{-x=14-1}$

$\text{-x=13}$

Divide both sides by -1:

$\text{x=-13}$

Note: Since the negative sign is already entered, all you need to enter is 13.

I hope you find my answer helpful.

Good luck!

Have a great day!

$\bf{StargazingWithJoy}$

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3 years ago

Which statement represents the transitive property of equality?

AysviL [449]

Answer:

This property states that if quantity a equals quantity b, then b equals a. Another property that can be explained by this is the transitive property of equality. It tells us that if a quantity a equals quantity b, and b equals the quantity, c, then a and c are equal as well.

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3 years ago

What is the correct decimal expansion for 2 1/11 ? A. 2.09 B. 2.57 C. 2.09 D. 2.11

hjlf

Your choices A and C are the same

but the decimal of 1/11 is 0.090909

so your answer would be 2.09

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3 years ago

Make a math card game

statuscvo [17]

Answer:

Use Close Call to practice two-digit addition or subtraction. The best math card games are simple at heart. To play Close Call, each player deals themselves four cards then determines how to arrange them so they make two two-digit numbers that add up as close as possible to 100 without going over.

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3 years ago

Read 2 more answers

Many urban zoos are looking at ways to effectively handle animal waste. One zoo has installed a facility that will transform ani

lukranit [14]

Answer:

Option A: 0.484

Explanation:

The amount of animal waste one zoo is diposing daily is approximately normal with:

mean, μ = 348.5 lbs
standard deivation, σ = 38.2 lbs

The proportion of waste over 350 lbs may be found using the table for the area under the curve for the cumulative normal standard probability.

First, find the z-score for 350 lbs:

$z-score=\dfrac{X-\mu}{\sigma}$

$z-score=\dfrac{350lbs-348.5lbs}{38.2lbs}\approx0.04$

There are tables for the cumulative areas (probabilities) to the left and for the cumulative areas to the right of the z-score.

You want the proportion of the days when the z-score is more than 0.04; then, you can use the table for the values to the rigth of z = 0.04.

From such table, the area or probability is 0.4840.

The attached image shows a portion of the table with that value: it is the cell highlighted in yellow.

Hence, the answer is the option (A) 0.484.

3 0

3 years ago