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3 years ago

8

At one location, the temperature increased from -7° F to 40 F between 5:00 a.m. and 9:00 a.m. By 11:00 a.m., the temperature was

3.5 times greater than the 9:00 a.m. temperature. What was the total increase in temperature between 5:00 a.m. and 11:00 a.m., in degrees Fahrenheit?

1 answer:

o-na [289]3 years ago

4 0

Answer:

the answer is 82 F add the temperature together

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tresset_1 [31]

Answer: Choice B) The graph opens down

The negative 'a' value means the parabola opens downward. One way to remember it is that the positive 'a' value means "happy face" or "smile", and a negative 'a' value means "frowny face".

See the image attachment and note the color coding of the graphs.

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3 years ago

A toy company can spend no more than $2,000 on raw materials for plastic trains and metal trains. The raw materials cost $0.80 p

Goryan [66]

Answer:

<em>The gaph is shown in the image below</em>

Step-by-step explanation:

<u>Graph of Inequalities</u>

Let's graph the region of the inequality

$0.8m + 0.4p \leq 2,000$

Since there is no indication, we'll assume the variable p to be in the horizontal axis and m in the vertical axis. Let's solve for m

$\displaystyle m=\frac{2,000-0.4p}{0.8}$

Since both m and p are positive, we can assume

$2,000-0.4p\geq 0$

Or, equivalently

$p \leq 5,000$

Thus, we can give p any value between 0 and 5,000 to get the corresponding values for m. Let's select the values p=0, p=1,000, p=5,000 to get the points

( 0 ; 2,500 ) ( 1,000 ; 2,000 ) ( 5,000 ; 0 )

With these points we can plot the line representing the function. To know which area must be shaded, we only need to test one point below or above the line. If it fulfills the inequality, then the whole area is shaded.

Let's test the point ( 1,000 ; 1,000 )

$0.8\cdot 1,000 + 0.4\cdot 1,000 \leq 2,000$

$1,200 \leq 2,000$

Since the condition is met, the area below the line must be shaded as the solution of the inequality

The gaph is shown in the image below

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3 years ago

Which expression is a prime polynomial?A. X^3-bx^2B. X^2-4x-12C. X^+8xy^3D. X^2-b^3

SOVA2 [1]

A prime polynomial is one that can only be divided by itself and 1. Let's check it option.

A. x³-bx²

This polynomial can be divided by itself, 1, x and x². So it can't be prime.

B. x²-4x-12

This polynomial represents the standard form of a second order polynomial. This means that it is a parabolla. A polynomial of this form can be divided by (x-a) where "a" is the value of its roots. So it can't be prime.

C. x+8xy³

This polynomial can be divided by x, 1 and itself, therefore it can't be a prime.

D. x²-b³

This polynomial can only be divided by 1 and itself. So this is the correct answer.

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2 years ago

Four farmers are picking apples in an orchard. Farmer A picks 3/8 of the apples, Farmer B picks 22% of the apples, Farmer C pick

meriva

D, B, C, A
D=200/1000
B=220/1000
C=290/1000
A=375/1000

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3 years ago

LOOKS EASY !! NO FILES/LINKS THX

siniylev [52]

Answer:

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Step-by-step explanation:

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3 years ago

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