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2 years ago

The Temperature is 50F. The temperature will decrease by 4F each hour. Let h be the numbers of hours.

Mathematics

1 answer:

Marysya12 [62]2 years ago

3 0

Answer:

a. 50 - 4h < 32

Step-by-step explanation:

The question is "When will the temperature be below 32F?" so it can't be less than or equal to (≤), it has to be less than (<).

If the temperature is <u>decreasing </u> every hour you have to decrease 4 for each hour.

hope that helps!

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Erica knits 18 squares on Monday. She knits 7 more squares each day for the rest of the week. How many squares does Erica have

Ne4ueva [31]

She knits 18 squares on Monday.
Then she knits 7 more squares each day:
Tuesday: +7, Wednesday: +7, Thursday: +7 and Friday: +7
18 + 7 * 4 = 18 + 28 = 46
Answer: She has 46 squares on Friday.

7 0

3 years ago

1. What is the solution of n² – 49 = 0? (1 point)

maks197457 [2]

Answer:

1. $n=\pm7$

2. $x=\pm7i[tex]3.[tex]\pm 12x =a$

4. 22

Step-by-step explanation:

1. $n^2 - 49 = 0$

$n^2 =49$

$n= \sqrt{49}$

$n=\pm7$

2. $x^2+64 = 0$

$x^2 =-64$

$x= \sqrt{49}$

$x=\pm7i[tex]3. Area of square = [tex]a^{2}$

Where a is the side

We are given an area o square = $144x^{2}$

So, $144x^{2}=a^{2}$

$\sqrt{144x^{2}}=a$

$\pm 12x =a$

4. We are given that the solution of quadratic equation -9 and 9

So, equation becomes:

$(x+9)(x-9)=0$

$x^2- 81=0$

So, in the given equation $x^2 + z = 103$

z should be the number from which if we subtract 103 so we get 81

Substitute z = 22

$x^2 + 22 = 103$

$x^2 + 22 -103=0$

$x^2 -81=0$

Thus the value of z is 22

8 0

3 years ago

Read 2 more answers

Please help - help :(

Leni [432]

Answer:

it's scaled down, so the answer is 1/2

Step-by-step explanation:

the scaled triangle is half the size of the original

4 0

2 years ago

Mr. Levin tried to simplify this expression. He made a mistake! Explain where the mistake is in this problem. Give the correct s

Law Incorporation [45]

Answer:

They did not distribute,

8-3(2x-5)

8-6x+15

23-6x

Step-by-step explanation:

8-3(2x-5)

8-6x+15

23-6x

3 0

2 years ago

Read 2 more answers

A man travels 2 miles, turn left and travels 3 miles, turn left again and travel 6 miles. How far is he from the starting point?

Lelu [443]

Answer: 5 miles

Step-by-step explanation:

this creates a polygon which can be shortened to be a triangle with side lengths 3 and 4 and the hypotenuse unknown. to find the side length you use the formula a^2 + b^2 = c^2

3^2 + 4^2 = c^2

9 + 16 = c^2

25 = c^2

sqrt(25) = c

c = 5

Download pdf

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3 years ago