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professor190 [17]
4 years ago
13

The local meteorologist claims that the temperature is going to steadily drop over the next 4 hours. If the temperature changes

by the same amount each hour, and it changes by a total of -28°F, how much will it change each hour? Explain how you got your answer in two or more complete sentences.
Mathematics
2 answers:
dedylja [7]4 years ago
3 0

Answer:

-7 degrees

Step-by-step explanation:

-28 divided by 4 equals -7. -7 x 4 = -28

olasank [31]4 years ago
3 0

Answer:

-7^{\circ}F

Step-by-step explanation:

Let x represent temperature change per hour.

We have been given that the temperature is going to steadily drop over the next 4 hours and the temperature changes by the same amount each hour.

So temperature change in 4 hours would be 4x.

We are also told that the temperature changes by a total of -28°F, so we can represent this information in equation as:

4x=-28^{\circ}F

Let us solve for x.

\frac{4x}{4}=-\frac{28^{\circ}F}{4}

x=-7^{\circ}F

Therefore, the temperature changes -7^{\circ}F each hour.

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Simplify 3x + 3 + 2.<br><br> 3x + 5<br> 5x + 3<br> 8x
Pie

Answer:

<em>3x + 5</em>

Step-by-step explanation:

We are doing variables and simplifying.

You have two types of numbers here, you have a coefficient, and you have regular numbers. Now do keep in mind that you can never add a regular number to a coefficient. So the only thing in this problem you will add is 3 and 2. Because 3x is different

3x + (3 + 2)

3x + 5

6 0
3 years ago
Read 2 more answers
S=a+b+c <br> solve for b<br> Completely forgot how to do this
olganol [36]

Answer:

b = S - a - c

Step-by-step explanation:

You just move every other term except for the one you're solving for to the other side, using the opposite operations

S = a + b + c

S - a = b + c

S - a - c = b

b = S - a - c

OR

S = a + b + c

-b + S = a + c

-b = -S + a + c

b = S - a - c (we flipped all signs here to make b positive, like it's supposed to be. The justification for this is multiplying both sides by -1)

7 0
3 years ago
What are the real and imaginary parts of z ?<br><br> z = 32 + 41.9i
goblinko [34]

Answer:

The real part is 32, while the imaginary part is 41.9

Step-by-step explanation:

z is a complex number. A complex number is made up of real and imaginary parts.

The real part is the number that stands alone, while the imaginary part is the number that is directly beside the i.

i is actually equal to \sqrt{-1}. There is no solution for that.

Therefore, for the given expression, the real part is 32, while the imaginary part is 41.9.

Note: the imaginary part does not contain i.

5 0
3 years ago
Can someone please help me??
Semmy [17]

since we don't know any of your vocabulary, I might not be using the ones you learned


since we have points A and B and points F(A) and F(B), I think they want us to use the word 'translation'

"The function F(x) translates each point to the right without moving them up or down." would be my description


also the 2 lines are paralell


7 0
3 years ago
What would be the correlation coefficient (r) of the following scatter plot?
luda_lava [24]

Answer:

-0.89 (i think)

Step-by-step explanation:

Since the graph seems to be going downwards from the right, it has a negative correlation. And since the data seems to be pretty close together, the correlation must be strong. That narrows the answer down to -0.89

If its wrong then i'm not a smart person, and it's -0.15

8 0
2 years ago
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