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matrenka [14]
4 years ago
13

Find the value of each variable. Write the equation and solve showing ALL the work.

Mathematics
1 answer:
Wittaler [7]4 years ago
3 0

Answer:

x = 96°

y = 102°

Step-by-step explanation:

Angles on a straight line add up to 180

78 + y = 180

y = 180 - 78

y = 102

Angles in a quadrilateral add up to 360

78 + 90 + x + x = 360

78 + 90 + 2x = 360

168 + 2x = 360

2x = 360 - 168

2x = 192

x = 192/2

x = 96°

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CaHeK987 [17]

Answer:

c = 4.211\cdot n

Step-by-step explanation:

The linear equation has the following form:

c = \frac{\Delta C}{\Delta n} \cdot n

Where:

n - Number of MBs of the data plan.

c - Monthly cost of the data plan.

The slope of the function is:

\frac{\Delta C}{\Delta n} = \frac{c}{n}

\frac{\Delta C}{\Delta n} = \frac{80\,MB}{19\,USD}

\frac{\Delta C}{\Delta n} = 4.211\,\frac{MB}{USD}

The equation is:

c = 4.211\cdot n

7 0
3 years ago
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Shawna does her math homework every night. Last night, Shawna spent 45 minutes solving 15 math problems. Tonight, she needs to s
Zielflug [23.3K]
Answer: 30 minutes
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8 0
3 years ago
Several students and adult chaperones are going on a field trip to the theater. Each student ticket cost $2 and each adult ticke
stiks02 [169]
<span>The answer to this question would be: A. the number of adults
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In this question, there are 4 times as many students as adults going on the trip. If we put it into a function where s= student and a=adult, then we could get one equation:<span>
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If you put the first equation into the second, you will get:
</span>2s+4a= 144
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6 0
3 years ago
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Ulleksa [173]

Answer:

70%

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since 7/10 is 0.7 as a decimal

you can then turn it into a percent by moving the decimal point two spots to the right

70 --> 70%

another way to do it is, to add zeros on both the numerator and denominator

then it is valued at 70/100

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hope this helps

7 0
2 years ago
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