All categories

3 years ago

Find the product: −5(−3)(−3) A) −30 B) −45 C) 30 D) 45

Mathematics

2 answers:

AlekseyPX3 years ago

8 0

Answer:

the answer is -45

Step-by-step explanation:

-5 x -3 x -3 = -45

i hope this helps i took the test

morpeh [17]3 years ago

4 0

Answer:

Step-by-step explanation:

You might be interested in

What are the solutions to the equation 0=x^2+4x+8?

VladimirAG [237]

Answer:

this are the equation I was taught

Step-by-step explanation:

_(x2+4x+8)=0

8 0

3 years ago

What is the key action the delegates took up about money?

Verdich [7]

<span>Answer: The most important actions the Congress took then, were the Declaration of Independence and the Articles of Confederation. The Second Continental Congress also began to print money.</span>

5 0

3 years ago

A particle moves on the x-axis with velocity given by v(t) = 3t4 − 11t2 + 9t − 2 for −3 ≤ t ≤ 3 . How many times does the partic

Natali [406]

Answer:

The particle changes its direction 2 times within the time -3<t<3

Step-by-step explanation:

The particle is moving only in a single dimension (x-axis), and whenever the particle changes its direction it also means that it's velocity while changing the direction will be zero.

Hence,

v(t) = 0

but since we're not concerned with the actual values of t when v(t)=0, we'll only consider how many times does the particle changes its direction.

for that we'll simply plot the curve using half-steps from -3 to 3.

t, v(t)

-3, 115

-2.5, 23.9375

-2, -16

-1.5, -25.0625

-1, -19

-0.5, -9.0625

0, -2

0.5, -0.0625

1, -1

1.5, 1.9375

2, 20

2.5, 68.9375

3, 169

What we need to check is at what points does the sign of v(t) values change (because only between those points will v(t) cross the x-axis, hence it's value would've crossed 0)

so there are two points!

between the intervals t = [-2.5,2] and [1,1.5]

so there are two points where the particle changes its directions and those points lie somewhere between these two aforementioned intervals.

5 0

4 years ago

The track coach tells Dave that he still has 80% of his workout left. Dave has run 4 laps so far.

Tpy6a [65]

20% equals 4
80% divided by 20% is 4
4x4=16

he has 16 laps left

7 0

3 years ago

16 - 3x = 4 + x <br> solve please

likoan [24]

Answer:

x = 3

Step-by-step explanation:

Solution for 16-3x=4+x equation:

Simplifying

16 + -3x = 4 + x

Solving

16 + -3x = 4 + x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-1x' to each side of the equation.

16 + -3x + -1x = 4 + x + -1x

Combine like terms: -3x + -1x = -4x

16 + -4x = 4 + x + -1x

Combine like terms: x + -1x = 0

16 + -4x = 4 + 0

16 + -4x = 4

Add '-16' to each side of the equation.

16 + -16 + -4x = 4 + -16

Combine like terms: 16 + -16 = 0

0 + -4x = 4 + -16

-4x = 4 + -16

Combine like terms: 4 + -16 = -12

-4x = -12

Divide each side by '-4'.

x = 3

Simplifying

x = 3Solution for 16-3x=4+x equation:

Simplifying

16 + -3x = 4 + x

Solving

16 + -3x = 4 + x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-1x' to each side of the equation.

16 + -3x + -1x = 4 + x + -1x

Combine like terms: -3x + -1x = -4x

16 + -4x = 4 + x + -1x

Combine like terms: x + -1x = 0

16 + -4x = 4 + 0

16 + -4x = 4

Add '-16' to each side of the equation.

16 + -16 + -4x = 4 + -16

Combine like terms: 16 + -16 = 0

0 + -4x = 4 + -16

-4x = 4 + -16

Combine like terms: 4 + -16 = -12

-4x = -12

Divide each side by '-4'.

x = 3

Simplifying

x = 3Solution for 16-3x=4+x equation:

Simplifying

16 + -3x = 4 + x

Solving

16 + -3x = 4 + x

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-1x' to each side of the equation.

16 + -3x + -1x = 4 + x + -1x

Combine like terms: -3x + -1x = -4x

16 + -4x = 4 + x + -1x

Combine like terms: x + -1x = 0

16 + -4x = 4 + 0

16 + -4x = 4

Add '-16' to each side of the equation.

16 + -16 + -4x = 4 + -16

Combine like terms: 16 + -16 = 0

0 + -4x = 4 + -16

-4x = 4 + -16

Combine like terms: 4 + -16 = -12

-4x = -12

Divide each side by '-4'.

x = 3

Simplifying

x = 3

6 0

3 years ago