3 years ago

If x = -3, calculate the value of x3 - x (the 3 after the x is meant to be cubed unit)

Mathematics

2 answers:

Ainat [17]3 years ago

4 0

I think the answer would be -24

mrs_skeptik [129]3 years ago

3 0

I think the answer is -24

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A quarter is 1/5 of an inch thick and 5 quarters weigh one ounce. Stephanie built a toothpick bridge that could safely hold 3 po

AleksandrR [38]

Answer:

Maximum height of quarter tower = 9.6 inches.

Step-by-step explanation:

The thickness of a quarter = $\frac{1}{5}$ inches

Weight of a quarter = 1 ounce

The maximum weight that could safely hold = 3 pounds.

<u>The conversion factor for ounce to pound is 1 ounce = 0.0625 pound</u>

The number of quarter used in the tower = no of ounces equivalent to 3 pounds.

No of ounces equivalent to 3 pounds = $\frac{3}{0.0625}$

No of ounces equivalent to 3 pounds = 48

So the height of quarter tower = 48 \times $\frac{1}{5}$ inches

= 9.6 inches.

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3 years ago

Write an equation of the line that passes through (5,9) and is perpendicular to the line y=-1/3x+1

777dan777 [17]

Perpendicular = opposite sign and reciprocal slope
Slope would be 3
Y = 3x + b, plug in point
9 = 3(5) + b, b = -6
Solution: y = 3x - 6

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3 years ago

What is the equation of the line that passes through the point (2, -1) and has a slope of ?

DENIUS [597]

Answer:

y = 3/2x - 4

Step-by-step explanation:

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3 years ago

If y varies directly as x, find the unknown value in the problem below:

Oksi-84 [34.3K]

12/-30=8x
cross multiply
12x=-240
x=-20

3 0

3 years ago

PLZ HELP! I WILL MARK BRANLIEST TO WHO EVER ANSWERS FIRST!!!!

ANTONII [103]

I think it is 47 not sure

3 0

3 years ago

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