All categories

2 years ago

2x+5+3x-7=18 What is this please help asap

Mathematics

1 answer:

Phantasy [73]2 years ago

4 0

Answer:

x=4

Step-by-step explanation:

Add like terms;

2x+5+3x-7=18

↓

5x-2=18

We want x by itself so we need to remove that negative 2, So <u>add</u> it on one side and to the other.

You should get this;

5x=20

now we divide by 5 (remember to do both sides) to get the x by itself,

and so you get x =4

I hope this helped!

You might be interested in

I'm begging you...but please write it in a long way

Anni [7]

9514 1404 393

Answer:

a) -1 5/14

b) -1/3

c) -1 : 10

Step-by-step explanation:

a) 1/7 - 0,5·3 = 1/7 -3/2 = (1·2 -3·7)/(7·2) = -19/14 = -1 5/14

b) (3/4 -0,25)·(-2/3) = (3/4 -1/4)·(-2/3) = (2/4)(-2/3) = (1/2)(-2/3) = (-1·2)/(2·3) = -1/3

c) (1 5/6 -1,2) : (-6 1/3) = (11/6 -6/5) : (-19/3) = (11·5 -6·6)/(6·5) : (-190/30)

= (19/30) : (-190/30) = -19 : 190 = -1 : 10

7 0

3 years ago

What is the distance between A and B? Round your answer to the nearest hundredth. (4 points)

evablogger [386]

Answer: 10.63

Step-by-step explanation:

Using the distance formula, you insert the coordinates into their respective places. Seven minus zero equals seven, and negative two minus six is negative eight. Then you have to square those, making it equal 49 plus 64. Add them together, then square root it.

6 0

3 years ago

Kalinda is 68. 7 inches tall and wants to know how many inches taller she is than Terrence. If t represents Terrence’s height in

Burka [1]

Answer:

Step-by-step explanation: jk

7 0

3 years ago

PLEASE ANSWER THIS . Goran's company makes solid balls out of scrap metal for various industrial uses. For one project, he must

Ainat [17]

Cost of aluminum required to make a ball of radius 7.5 inches is $ 161.71

<h3><u>Solution:</u></h3>

Given that

Goran's company makes solid balls out of scrap metal for various industrial uses.

For one project, he must make aluminum balls that have a radius of 7.5 inches.

Cost of aluminum = $0.12 per cubic inches

Need to determine cost of aluminum to make one ball.

Lets first calculate the volume of one ball

As shape of the ball is sphere , we can use volume of sphere formula

$\text {Volume of ball }=\text { Volume of sphere }=\frac{4}{3} \pi r^{3}$

Where "r" is the raius of ball

Given that radius of required ball = 7.5 inches

$\text { So, volume of ball of radius } 7.5 \text { inches }=\frac{4}{3} \pi \times 7.5^{3}$

$=\frac{4}{3} \times 3.14 \times 321.875=1347.5833 \text { cubic inches }$

So quantity of aluminum required is same as volume of ball = 1347.5833 cubic inches

Cost of aluminum for 1 cubic inch = $0.12

<em><u>So cost of aluminum required to make a ball of aluminium of 1347.5833 cubic inches is given as:</u></em>

$=0.12 \times 1347.5833=\$ 161.71$

8 0

3 years ago

Graph the line with 3/4 slope<br> passing through the point (2,-2).

S_A_V [24]

Answer:

Step-by-step explanation

x1 = 2, y1 = -2 and m = 3/4

y - y1 = m(x - x1)

y - (-2) = 3/4(x - 2)

y + 2 = 3/4(x - 2)

Multiply each term by 4

4y + 8 = 3(x - 2)

4y + 8 = 3x - 6

4y = 3x - 6 - 8

4y = 3x - 14

5 0

3 years ago