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Kryger [21]
2 years ago
11

Evaluate the expression 2x-(4y-3)+5xz, when x=-3,y=2, and z=-1

Mathematics
1 answer:
AVprozaik [17]2 years ago
3 0

Answer: 4

Step-by-step explanation:

2x - (4y - 3) + 5xz

Let  x = -3, y = 2, and z = ‐1.

2(-3) -( 4(2) -3) +5(-3)(-1)

-6 - (8-3) +15

-6 - 5 +15

-11 +15

4

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5x(3x+2)-4(2x-1)<br><br><br><br> Yea i needd help
UkoKoshka [18]

Answer: 15x² + 2x + 4

x = -2/3, 0, 1/2

Step-by-step explanation:

5x(3x + 2) - 4(2x - 1)

First, distribute:

15x² + 10x - 8x + 4

Combine like terms:

15x² + 2x + 4

This is your polynomial!

If you needed to solve for x, take your original factored polynomial and set each term equal to 0:

5x(3x + 2) - 4(2x - 1)

5x = 0

x = 0

3x + 2 = 0

3x = -2

x = -2/3

-4 = 0

No solution

2x - 1 = 0

2x = 1

x = 1/2

x = -2/3, 0, 1/2

Hope this helps!

4 0
4 years ago
A handyman company serves customers from two cities 60 miles apart, Jonesville and Bellevue. The company would like to position
maw [93]

The new office should be at a distance of 37.5 miles from Jonesville.

The weighted mean is the sum of all elements in a data-set multiplied by their weights, divided by the sum of the weights. For example, if x1 and x2 are the elements with weights w1 and w2 respectively, then the weighted average is calculated using the given formula-

M =  {(x1*w1) + (x2*w2)}/ (w1+w2)

Here, we are given that two cities Jonesville and Bellevue, 60 miles apart.

Let Jonesville be at point 0 and Bellevue be at point 60.

Jonesville has a weight of 3 and Bellevue has a weight of 5.

Thus, the weighted average can be calculated as follows-

Mean = {(60*5) + (0*3)}/8

= 300/8

= 75/2

= 37.5

Thus, the new office should be at a distance of 37.5 miles from Jonesville.

Learn more about weighted averages here-

brainly.com/question/28507971

#SPJ1

4 0
1 year ago
Victoria has a dog. The dog's tail is 2 inches long. Every year his tail grows by 5%. What will be his tail's length next year?
hodyreva [135]
So you have to do 2×5 because the dogs tail is 2 inches long and is grows 5 inches or something every year. So 5×2=10
8 0
4 years ago
Factor completely. 5x^2+44x-9
Leni [432]

Answer:

(x + 9)(5x - 1)

Step-by-step explanation:

Given

5x² + 44x - 9

Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term.

product = 5 × - 9 = - 45 and sum = + 44

The factors are + 45 and - 1

Use these factors to split the x- term

5x² + 45x - x - 9 ( factor the first/second and third/fourth terms )

= 5x(x + 9) - 1(x + 9) ← factor out (x + 9) from each term

= (x + 9)(5x - 1) ← in factored form

6 0
3 years ago
A bucket of ice cream measures 8 inches tall and has a diameter of 12 inches. What is the volume of the bucket of ice cream? (Us
Setler79 [48]
904.32 inches cubed because if you start off with the formula of the circle ( pie r squared) then 6 times 6 ( because the diameter 12 divided by 2 for radius 6) equals 36 now multiply it with pie(3.14) equals to 113.04. Last multiply it by height 8 and you will get 904.32.
4 0
3 years ago
Read 2 more answers
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