1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
miv72 [106K]
3 years ago
10

Solve 5(2x) = 7(x-1). Neeeeed help

Mathematics
2 answers:
Ray Of Light [21]3 years ago
8 0

Answer:

\boxed{\bold{x=-\frac{7}{3}}}

Step-by-step explanation:

Expand: \bold{5\left(2x\right): \ 10x}

Expand: \bold{7\left(x-1\right): \ 7x-7}

\bold{10x=7x-7}

Subtract 7x From Both Sides

\bold{10x-7x=7x-7-7x}

Simplify

\bold{3x=-7}

Divide Both Sides By 3

\bold{\frac{3x}{3}=\frac{-7}{3}}

Simplify

\bold{x=-\frac{7}{3}}

vekshin13 years ago
7 0

Answer:

If looking for x then X= -7/3.

Step-by-step explanation:

You might be interested in
The numbers​ 1, 2,​ 3, 4, and 5 are written on slips of​ paper, and 2 slips are drawn at random one at a time without replacemen
mamaluj [8]
<h2>Answer:</h2>

(a)

The probability is :  1/2

(b)

The probability is :  1/2

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

The numbers​ 1, 2,​ 3, 4, and 5 are written on slips of​ paper, and 2 slips are drawn at random one at a time without replacement.

The total combinations that are possible are:

(1,2)   (1,3)    (1,4)    (1,5)

(2,1)   (2,3)   (2,4)   (2,5)

(3,1)   (3,2)   (3,4)   (3,5)

(4,1)   (4,2)   (4,3)   (4,5)

(5,1)   (5,2)   (5,3)   (5,4)

i.e. the total outcomes are : 20

(a)

Let A denote the event that the first number is 4.

and B denote the event that the sum is: 9.

Let P denote the probability of an event.

We are asked to find:

               P(A|B)

We know that it could be calculated by using the formula:

P(A|B)=\dfrac{P(A\bigcap B)}{P(B)}

Hence, based on the data we have:

P(A\bigcap B)=\dfrac{1}{20}

( Since, out of a total of 20 outcomes there is just one outcome which comes in A∩B and it is:  (4,5) )

and

P(B)=\dfrac{2}{20}

( since, there are just two outcomes such that the sum is: 9

(4,5) and (5,4) )

Hence, we have:

P(A|B)=\dfrac{\dfrac{1}{20}}{\dfrac{2}{20}}\\\\i.e.\\\\P(A|B)=\dfrac{1}{2}

(b)

Let A denote the event that the first number is 3.

and B denote the event that the sum is: 8.

Let P denote the probability of an event.

We are asked to find:

               P(A|B)

Hence, based on the data we have:

P(A\bigcap B)=\dfrac{1}{20}

( since, the only outcome out of 20 outcomes is:  (3,5) )

and

P(B)=\dfrac{2}{20}

( since, there are just two outcomes such that the sum is: 8

(3,5) and (5,3) )

Hence, we have:

P(A|B)=\dfrac{\dfrac{1}{20}}{\dfrac{2}{20}}\\\\i.e.\\\\P(A|B)=\dfrac{1}{2}

7 0
3 years ago
Three pies were made for a party. Each pie was cut into eight pieces. 3⁄8 of the apple pie was left. 1⁄2 of the cherry pie was l
miskamm [114]

Answer:

There are 13 pieces of pie left.

Step-by-step explanation:

So there are 3 pieces of apple pie left, there are 4 pieces of cherry pie left, and there are 6 pieces of pumpkin pie left. 3 + 4 + 6 = 13.

3/8 = 3 pieces because each fraction in this one equals one piece. So the numerator is how many left.

1/2= 4 because you just divide 8 by 2.

3/4 = 2 because you can multiply the fraction by 2 and get 6/8. Then the numerator is how many that's left.

I hope I helped.

3 0
3 years ago
20n -5 - 3n + 10 pls help
artcher [175]

Answer:

17x+5

Step-by-step explanation:

Simplify the equation

8 0
3 years ago
Read 2 more answers
Which is the product or 11/12 and 4? A 1 1/4 B 3 2/3 C 4 1/3 D 33
bazaltina [42]

Answer:

Step-by-step explanation:

11/12 × 4 = 11/3 = 3⅔

8 0
3 years ago
If 3 inches equals 14 feet what is 35 feet in inches
sergij07 [2.7K]

Answer:

420 inches

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • Barbra can walk 3200 meters in 24 minutes. How far can she walk in 3 minutes show your work
    14·1 answer
  • Please help me I don't understand what to do
    15·2 answers
  • Solve the following system of equations:
    6·2 answers
  • What is 625/18 as a whole number or an improper fraction
    10·2 answers
  • A survey found that​ women's heights are normally distributed with mean 63.4 in and standard deviation 2.2 in. A branch of the m
    6·1 answer
  • Jacob had 15 apples and gave 10 to his brother. If he had 21 apples and wanted to give the same percentage to his brother, how m
    14·2 answers
  • PLEASE HELP I WILL GIVE BRAINLIEST! Mason already has 11 plants in his backyard, and he can also grow 1 plant with every seed
    14·1 answer
  • Write the number 0.000 000 7 in standard form.
    8·1 answer
  • Select all of the solutions to the following inequality. 4x+6 &gt; 3x-9
    6·1 answer
  • Thank you for your help. The question is in the screenshot
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!