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Lilit [14]
3 years ago
14

What's X? to: 15x - 7x = (-52) - 5x

Mathematics
2 answers:
Studentka2010 [4]3 years ago
6 0
-4

Because 15x-7x= 8x
8x+5x= 13x
13x= -52
-52 / 13= -4
x = -4

ollegr [7]3 years ago
3 0
First, condense what's on the right side of the problem:
15x-7x=-52-5x \\ 8x=-52-5x
Nest, get all the terms with x on one side. To do this, add 5x to both sides:
(8x)+5x=(-52-5x)+5x \\ 13x=-52
Finally, divide each side by 13 to get x alone:
(13x)/13=(-52)/13 \\ x=-4
The answer is x = -4.

To check, simply plug -4 in for x like so:
15(-4)-7(-4)=-52-5(-4) \\ -60--28=-52--20 \\ -60+28=-52+20 \\ -32=-32
Since we get the same answer on both sides of the equation, we know our answer is correct!

Hope this helps!
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how long will it take b and c to equal the same if b starts with 30,000 with an raise of 2400 and c starts with 36000 with a rai
Rufina [12.5K]
The easiest way is to make equations y=2400x+30000 and y=2000+36000
and then put that in the calculator and go to table and the point they intersect at is (15,66000)
3 0
3 years ago
The subsets of the real numbers can be represented in a Venn diagram as shown. To which subset of real numbers does −2π belong?
Alecsey [184]

Answer:

D

Step-by-step explanation:

Whole numbers are the basic counting numbers: 0,\ 1,\ 2,\ 3,\ 4, \....

Integers are whole numbers and negative numbers: ...,\ -2,\ -1,\ 0,\ 1,\ 2,\ ...

Rational numbers are all fractions \frac{m}{n}, where m is an integer and n is a natural number.

Irrational numbers are all real numbers that are not rational.

Number \pi is irrational number (it is not counting number, so it is not whole number, not integer number), it cannot be represented as a fraction, so it is not rational number, thus this number is irrational number.

The product of integer number -2 by irrational number \pi is irrational number -2\pi

Correct option - option D

7 0
2 years ago
Read 2 more answers
According to data from the state blood program, 40 percent of all individuals have group A blood. If six individuals give blood,
Serjik [45]

Answer: 0.27648

Step-by-step explanation:

Given : The proportion of all  individuals have group A blood : p=0.040

Total individuals give blood : n= 6

Let X be the number of individuals have group A blood.

Since all individual are independent of each other.

X\sim Bin(n=6, p=0.40)

Formula : P(X=x)=^nC_xp^x(1-p)^{n-x} , where n= sample size , p = probability of getting success in each trial.

The probability that exactly three of the individuals have group A blood. :

P(x=3)= ^6C_3(0.40)^3(1-0.4)^3\\\\= \dfrac{6!}{3!3!}\times(0.40)^3(0.60)^3\\\\=0.27648

The probability that exactly three of the individuals have group A blood. is 0.27648

8 0
3 years ago
What is the equation of a line that passes through the points (–3, 4) and (2, 8)?
sveta [45]

Answer:

=5

Step-by-step explanation:

4-9= -5

2-3 = -1

=5

.....

3 0
3 years ago
Read 2 more answers
PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! WILL NAME BRAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
faltersainse [42]

Hope this helps

Answer :

Percentage increase = (279 - 180)/180 x 100% = 55%

5 0
2 years ago
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