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Umnica [9.8K]
4 years ago
5

Solve for 2x - 10 = 90 ALOT OF POINTS AND BRAINLIST QUESTION​

Mathematics
2 answers:
Oksi-84 [34.3K]4 years ago
6 0

Answer:

x=50

Step-by-step explanation:

Vera_Pavlovna [14]4 years ago
4 0

Answer: X = 50

Step-by-step explanation:

Add 10 to both sides

2x = 100

divide by 2

x= 50

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How many solutions does the equation 3x + 6 = −1 − 3 + 4x have? (5 points)
lianna [129]

Answer:

The equation has only one solution which is:

  • x = 10

Step-by-step explanation:

Given the equation

3x\:+\:6\:=\:-1\:-\:3\:+\:4x

Let us solve the equation to determine the type of the equation

3x\:+\:6\:=\:-1\:-\:3\:+\:4x

subtract the number: -1 - 3 = -4

3x+6=4x-4

subtract 6 from both sides

3x+6-6=4x-4-6

3x=4x-10

subtract 4x from both sides

3x-4x=4x-10-4x

-x=-10

Divide both sides y -1

\frac{-x}{-1}=\frac{-10}{-1}

x=10

Therefore, the equation has only one solution which is:

  • x = 10
7 0
3 years ago
HELP ASAP PLEASE!
Genrish500 [490]

Step-by-step explanation:

lets take a look....

In order to find the perimeter of a triangle you have to get the sum of all sides. In other words,

Blue triangle:

p = (4x +2) + (7x + 7) + (5x  - 4) \\ p = 4x + 2 + 7x + 7 + 5x - 4 \\ p = 16x + 5

Red triangle:

p = (x + 3) + (2x - 5) + (x + 7) \\ p = x + 3 + 2x - 5 + x + 7 \\ p = 4x + 5

Difference:

d = (16x + 5) - (4x + 5) \\ d = 16x + 5 - 4x - 5 = 12x \\ d = 12x

4 0
3 years ago
You want to put a 5 inch thick layer of topsoil for a new 28 ft by 14 ft garden. The dirt store sells by the cubic yards. How ma
Levart [38]

Answer: SOLUTION -

Let’s convert first the unit dimension of the garden from inches-feet to yards.

HEIGHT: 4 in * (1 ft / 12 in) = 1/3 ft * (1 yard/3 ft) = 1/9 yard

WIDTH: 28 ft * (1 yard/3 ft) = 28/3 yards

LENGTH: 32 ft * (1 yard/3 ft) = 32/3 yards

Then, let’s get the total soil capacity or volume of the garden:

(32/3) * (28/3) * (1/9) = 896/81 = 11.06 cubic yards

Since we can’t buy 0.06 cubic yard of soil, we need to round off 11.06 to the next number of cubic yards that is exactly divisible by 1/4.

It will give us then with 11 & 1/4 cubic yards.

Step-by-step explanation:

6 0
3 years ago
Please I need help and the calculation of which contract is better.
kramer

Answer:

You should go with the 1st, because it's cheaper.

Step-by-step explanation:

1st plan:

30$ which include 75 mins of free calls and 100 free text messages

25 more mins * 10¢ /min(0.1$/min) = 2.5$

You will pay 32.5$

2nd plan:

(calls)100*0.3$=30$

(text messages)100 * 0.1$=10$

30+10 = 40$

8 0
3 years ago
The ratio of boys to girls in a
dybincka [34]

Answer:

48+x/x=7/1

48+x=7x

6x=48

x=8

no. of girls = 8

no.of boys= 48+8

= 56

The answer is 8

8 0
3 years ago
Read 2 more answers
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