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3 years ago

(6x to 2nd power -3x -7) (2x +5)

Mathematics

1 answer:

tigry1 [53]3 years ago

4 0

(6x² - 3x - 7)(2x + 5)
12x³ + 30x² - 6x² - 15x - 14x - 35
12x³ + 24x² - 29x - 35

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A 32-inch piece of steel is cut into three pieces so that the second piece is twice as long as the first piece, and the third

Goshia [24]

Answer:

first piece = 1.88in

second piece= 3.76in

third piece = 26.32in

32 = f + s + t

1st piece = f

2nd piece = s

3rd piece = t

what we know:

s = 2f

t = 2(7f)

32 = f + 2f + 2(7f)

32 = 3f +14f

32 = 17f

f = 1.88

now sub in:

f = 1.88

s = 3.76

t = 26.32

when you add these together you get 31.96, when you round up you get 32 which is the original piece of steel.

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3 years ago

The table shows the temperature (in degrees) for eight consecutive days as well as the respective number of ice cream cones an i

algol13

Answer:

B. 585

Step-by-step explanation:

A graph of the scatter plot and line of best fit is attached.

The temperature in this problem will be the independent variable, or x. This is because we are assuming that the number of ice cream cones sold depends on the temperature; this means the number of ice cream cones will be the dependent variable, or y.

This means in our graphing calculator, we will enter temperature in the first list and the number of cones in the second.

After drawing the scatter plot, we run the linear regression; we get the values for a and b in our equation, y = ax+b:

a = 5.08

b = 46.59

This gives us the equation y = 5.08x + 46.59.

Entering our temperature, 106, in for x gives us

y = 5.08(106) + 46.59 = 585.07 ≈ 585

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3 years ago

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Answer:

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2 years ago

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3 years ago

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Dimas [21]

Answer:

18= 2 x 3 x 3

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2 years ago