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lidiya [134]
3 years ago
10

25 POINTS AND BRAINLIEST

Mathematics
2 answers:
MariettaO [177]3 years ago
8 0

If it went down 54 degrees in 22.5 minutes, then you do -54/22.5, which gives you -2.4. So the temperature went down 2.4 F each minute. I think.

Papessa [141]3 years ago
7 0

Answer:

-2.4

Step-by-step explanation:

-54/22.5= -2.4

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Two buildings on opposites sides of a highway are 3x^3- x^2 + 7x +100 feet apart. One building is 2x^2 + 7x feet from the highwa
Furkat [3]

Given:

Distance between two buildings = 3x^3- x^2 + 7x +100 feet apart.

Distance between highway and one building = 2x^2 + 7x feet.

Distance between highway and second building = x^3 + 2x^2 - 18 feet.

To find:

The standard form of the polynomial representing the width of the highway between the two building.

Solution:

We know that,

Width of the highway = Distance between two buildings - Distance of both buildings from highway.

Using the above formula, we get the polynomial for width (W) of the highway.

W=3x^3- x^2 + 7x +100-(2x^2 + 7x)-(x^3 + 2x^2 - 18)

W=3x^3- x^2 + 7x +100-2x^2-7x-x^3 -2x^2+18

Combining like terms, we get

W=(3x^3-x^3)+(- x^2 -2x^2-2x^2)+ (7x -7x)+(100 +18)

W=2x^3-5x^2+0+118

W=2x^3-5x^2+118

Therefore, the width point highway is 2x^3-5x^2+118.

3 0
3 years ago
A students cost for last semester at her college was 2400. She spent $288 of that on books. What percent of last semesters colle
Nat2105 [25]

Answer:

12%

Step-by-step explanation:

288/2400 *100

=288/24

=12%

8 0
3 years ago
Read 2 more answers
Consider a square and a regular hexagon (a 6-sided figure with sides of equal length). One side of the square is 4 feet longer t
Reil [10]
Notice the picture below

now, we know their perimeter are the same for both

thus 4(a+4) = 6a

solve for "a"

6 0
3 years ago
Nina purchased 4 pounds of strawberries for a total of $6.40.How much did she pay for one pound of strawberries?
PSYCHO15rus [73]

Answer:

1.6$

Step-by-step explanation:

6.4/4=1.6

4 0
3 years ago
Write down the equation of a line whose slope is 2 and crosses the y-axis at (0,-3).
alexgriva [62]

The equation of the line is y=2x-3.

It is required to find the equation of the line.

<h3>What is straight line?</h3>

A straight line is just a line with no curves .The general equation of a straight line is y = mx + c, where m is the gradient, and y = c is the value where the line cuts the y-axis. This number c is called the intercept on the y-axis. The equation of a straight line with gradient m and intercept c on the y-axis is y = mx + c.

Given:

The slope-intercept form of a line is

y = mx +c

where c is the intercept and m is the slope.

According to given question we have,

slope =2

y - intercept=-3

The equation of the line

y=2x-3

Therefore, the equation of the line is y=2x-3.

Learn more about straight line here:

brainly.com/question/27560536

#SPJ1

5 0
1 year ago
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