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Nataliya [291]
3 years ago
9

2x - 18x + 14y - 19 Is it equivalent

Mathematics
2 answers:
jek_recluse [69]3 years ago
4 0

Answer:

Step-by-step explanation:

You can simplify this by collecting the like terms. The only like terms are the pair 2x and 18 x

2x-18x = -16x

Now, put them back together,

-16x + 14y-19

Allisa [31]3 years ago
4 0

Answer:

-16x + 14y - 19

Step-by-step explanation:

2x - 18x + 14y - 19

Factor out the x.

x(2-18) + 14y - 19

Solve for the brackets.

x(-16) + 14y - 19

-16x + 14y - 19

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Prove that there exists a unique real number solution to the equation x3 + x2 − 1 = 0 between x = 2/3 and x=1
ziro4ka [17]
Replace each of the x values given to see if they give 0. 

0=(2/3)³+(2/3)²-1 
0=(8/27)+(4/9)-1 
0≠-0.259

0=(1)³+(1)²-1 
0≠1

Therefore, you can see that the solution would have to be between 2/3 and 1.

Hope I helped :) 
7 0
3 years ago
I need help.......<br>How many right angles need to be put together to make:<br>360 degrees?
kari74 [83]

Answer:

4 right angles.

Step-by-step explanation:

1 right angle: 90 degrees

360/90= 4

6 0
3 years ago
You place three orders for 100 soccer balls which cost $22 per ball. You receive all 300 balls. There is a delivery charge of $2
julsineya [31]

Answer:

Average cost per ball: $22.2

Step-by-step explanation:

Cost per ball: $22

Cost of 300 balls: 300 × 22 = $6600

Total No. of Orders: 3

Delivery fee per order: $20

Total Delievery fee: 20 × 3 =$60

Total cost including delivery cost: $6600 + $60 = $6660


Average cost per ball = \frac{Total cost}{No. of balls}

Average cost per ball = \frac{6660}{300}

Average cost per ball = $22.2



7 0
3 years ago
What is the surface area of the cylinder with height 4 mi and radius 3 mi? Round your answer to the nearest thousandth.
Norma-Jean [14]

Answer:

The surface area of the cylinder will be "131.88".

Step-by-step explanation:

The given values are:

Height of cylinder,

h = 4 m

Radius of cylinder,

r = 3 m

As we know,

The surface are of cylinder is:

⇒  A_s=2 \pi r(h+r)

On substituting the values, we get

⇒       =2\times 3.14\times 3(4+3)

⇒       =18.84\times 7

⇒       =131.88

5 0
2 years ago
Which describes the correlation shown?
VladimirAG [237]
<h2>Answer:</h2>

The correlation that is shown in the scatter plot is:

         Strong positive.

<h2>Step-by-step explanation:</h2>

From the scatter plot we see that with the increase of one variable the second variable also increases.

Hence, the association is positive.

Also, if we draw a trend line that best represents the scatter plot then not all the points will lie above the line but all the data points are either over the line or very close to the line this means that the correlation coefficient is close to 1 but not exactly equal to 1.

            Hence, the correlation is:

               Strong positive.

( For perfect positive all the data points should lie above that line i.e. correlation coefficient must be equal to 1)

3 0
3 years ago
Read 2 more answers
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