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3 years ago

Simplify the expression -4x(6x-7)

Mathematics

2 answers:

matrenka [14]3 years ago

6 0

The answer to the expression is -24x+28x

Virty [35]3 years ago

5 0

Answer:

$-24x^2+28x$

Step-by-step explanation:

To simplify this expression, we must eliminate the parenthesis applying the distributive property (multiplying each term that within the parenthesis by which it is outside)

$-4x(6x-7)\\ -24x^2+28x$

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A shelf takes 3 1 /2 ft. of lumber. How many shelves can be made from 24 1 /2

levacccp [35]

Answer is 7

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24 1/2 = 24.5
3 1/2 = 3.5

24.5/3.5 = 7

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3 years ago

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Rosie wants to make a cube with rectangular blocks each measuring 6cm by 3cm by 8cm. Find the least number of blocks she must us

Marysya12 [62]

Hello,

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2 years ago

Explain how you can determine the number of real number solutions of a system of equations in which one equation is linear and t

DerKrebs [107]

Isolate one variable in the system of equations. Use substitution to create a one-variable equation. Then, set the quadratic equation equal to zero and find the discriminant. If the discriminant is negative, then there are no real number solutions. If the discriminant is zero, then there is one real number solution. If the discriminant is positive, then there are two real number solutions.

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3 years ago

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The graph shows the distance, y, in miles, of a moving motorboat from an island for a certain amount of time, x, in hours:

lisabon 2012 [21]

Answer: The speed of the motorboat is 70 miles per hour

Step-by-step explanation: Subtract the initial distance, 35, from the distance at any given time, then divide the remainder by the hours.

For example, at 2 hours, the distance shown on the graph is 175 miles

Subtract: 175 -35 = 140. Then divide 140/2 = 70

At 4 hours, the distance shown is 315 miles.

Subtract: 315 - 35 = 280. Then divide 280/4 = 70

70 mph is the speed.

7 0

3 years ago

What is 328.618 round to the nearest hundredth A. 300 B. 328.60 C. 330 D. 328.62

son4ous [18]

Answer:

D. 328.62

Step-by-step explanation:

328.618 round to the nearest hundredth

Rounding to the nearest hundredth means 2 numbers after the decimal point

Numbers that rounds to 1 are 5, 6, 7, 8, 9

Number that rounds to 0 are 0, 1, 2, 3, 4

When rounding up, to the nearest hundredth, you will consider the next number after the two figures after the decimal point

Here, the next number after the two figures after the decimal point is 8

8 is a number that rounds to 1

Therefore, add 1 to 1 to have

328.62

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2 years ago