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3 years ago

I only need Q d please (the last question)

Mathematics

1 answer:

irinina [24]3 years ago

3 0

Answer:

December at -10

Step-by-step explanation:

first you rule out all positive numbers

then you finder the biggest number with a negative side and that is you lowest temperature

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The cost depends upon the number of long distance minutes, m, Amy uses. Write the rule that describes Amy's monthly cost.

Yuri [45]

Minutes(m) Cost
0 20
10 22
20 24
50 30

slope formula:
m = (y1 - y2) / (x1 - x2)
m = (20 - 22) / (0 - 10) = -2/-10 = 1/5 or 0.20

y = (1/5)(x) + 20

The rule that describes Amy's monthly cost is:
m = 1/5x + 20 or m = 0.20x + 20

Where x is the number of minutes spent on the call.

3 0

3 years ago

A school is painting its logo in the shape of a triangle in the middle of its sports field. The school wants the height of the t

Radda [10]

Answer:

$b\geq 9$

In other words, the base must be at least 9 feet long.

Step-by-step explanation:

The schools wants the height of the triangle to be eight feet, and the area of the logo to be at least 36 square feet.

Recall that the area of a triangle is given by:

$\displaystyle A = \frac{1}{2}bh$

Since we want to area to be at least 36 square feet:

$\displaystyle \frac{1}{2}bh \geq 36$

We are given that the height is eight feet. Substitute:

$\displaystyle \frac{1}{2}(8)b\geq 36$

Simplify:

$4b\geq 36$

Divide both sides by four. Hence, our inequality is:

$b\geq 9$

In words, this means that the base must be at least 9 feet long.

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3 years ago

Solve 8x - 5y = 14 for y.

emmasim [6.3K]

9 is y is the answer

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3 years ago

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Which is larger 4 yards or 13 feet?

Dmitrij [34]

13feet is larger as 4 yard is equivalent to 12 feet

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Divide. (3 3/4 )÷(−2 1/2 ) Enter your answer as a mixed number, in simplified form, in the box.

Agata [3.3K]

Answer:

-11/14

Step-by-step explanation: first you divide 33/4 and (-21/2), then reduce the numbers to -33/4 times 2/21 after you reduce both fractions multiply -11/2 times 1/7 and you get -11/14 your alternative form would br -0.785714

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3 years ago