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Wittaler [7]
3 years ago
9

Corinna has $80. She wants to buy a $245 plane ticket. She will save up her earnings from working at the museum where she earns

$15 per hour. Which inequality shows the number of hours, n, Corinna must work so that she has a total of at least $245
Mathematics
1 answer:
vivado [14]3 years ago
4 0

245<=80+15n

245 is less than or equal to 80 (original savings) + 15n (pay*number of hours)

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What is the value of z in the equation 4(2z + 3) = 12?
Gelneren [198K]

4(2z+3) =12

8z+12 = 12

8z=0

z = 8/0

z=0

Answer is C. 0

5 0
3 years ago
(−2/3)x(5/4) help plz
avanturin [10]

Answer:

-\frac{5}{6}

Step-by-step explanation:

  1. Write it out: -\frac{2}{3} × \frac{5}{4}  
  2. 3 × 4 = 12
  3. -2 × 5 = -10
  4. Put them together: -\frac{10}{12}  
  5. Simplify: -10/12 = -5/6

I hope this helps!

8 0
3 years ago
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During his workout, Elan spent 28% of the time on the treadmill. What fraction of his workout was on the treadmill?
tatyana61 [14]
28% means 28/100 which can be divided by 4/4 - the answer is 7/25
7 0
4 years ago
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the Johnsons want to cover their backyard with new grass their backyard is rectangular with a length of 3x - 2 feet and a width
Andre45 [30]
<h2>Hello!</h2>

The answer is:

The area that the want to cover with new grass will be:

Area_{grass}=8x^{2} -12x-22

<h2>Why?</h2>

If we want to calculate what is the ara of the region of the backyard that they want to cover with new grass, we need to calculate the area of the backyard, calculate the area of the swimming pool and its patio, and the last step is to subtract the area of the swimming pool and its patio to the total area of the backyard.

So, to calculate the areas, we need to use the following formula:

Area=Length*Width

Also, we need to remember how the distributive property works, since we are going to need it.

We have that:

(a+b)(c+d)=ac+ad+bc+bd

We are given the following information:

For the backyard we have:

Length=3x-2\\Width=3x+1

For the swimming pool and its patio:

Since there it's not mentioned, let be the first expression the length, and the second one, the width.

Length=x+4\\Width=x+5

Then, calculating we have:

Backyard:

Area_{backyard}=(3x-2)*(3x+1)=9x^{2}+3x-6x-2=9x^{2}-3x-2

Swimming pool and patio:

Area_{swimmingpool}=(x+4)*(x+5)=x^{2}+5x+4x+20=x^{2}+9x+20

Now, calculating the area that they want to cover with new grass, we have:

Area_{grass}=Area_{backyard}-Area_{swimmingPool}\\\\Area_{grass}=(9x^{2}-3x-2)-(x^{2}+9x+20)\\\\Area_{grass}=9x^{2} -x^{2} -3x-9x-2-20\\\\Area_{grass}=8x^{2} -12x-22

Hence, we have that the area that the want to cover with new grass will be:

Area_{grass}=8x^{2} -12x-22

Have a nice day!

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3 years ago
Which of the following rational functions is graphed below?
Step2247 [10]

Answer:

D

Step-by-step explanation:

D

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