All categories

3 years ago

3c+-9=18 I don't know how to do this problems

Mathematics

2 answers:

Rzqust [24]3 years ago

8 0

3c+-9=18

+-=-

3c-9=18

move 9c to the other side and the sign changes from negative to positive.

3c-9+9= 18+9

3c= 27

Divide by 3

c=9

hichkok12 [17]3 years ago

3 0

3 because you have to add -9 to 18 then divide 3c by tht answer

You might be interested in

What is 2(5x+7)+8x-7=27

shutvik [7]

2(5x+7)+8x-7=27

We move all terms to the left:

2(5x+7)+8x-7-(27)=0

We add all the numbers together, and all the variables

8x+2(5x+7)-34=0

We multiply parentheses

8x+10x+14-34=0

We add all the numbers together, and all the variables

18x-20=0

We move all terms containing x to the left, all other terms to the right

18x=20

x=20/18

x=1+1/9

6 0

3 years ago

Read 2 more answers

Plz Help me find the answer

MissTica

Answer:

112

Step-by-step explanation:

20(18 / 6) + 52

20(3) + 52

60 + 52

= 112

8 0

3 years ago

Read 2 more answers

The average American is responsible for about 20,000 kilograms of carbon emission pollution each year. Express this number as a

kondor19780726 [428]

2 x 10000 = 20000

2 x 10 x 10 x 10 x 10

The answer is 2 x 10^4

3 0

3 years ago

Which of the following statements is true about the sequence? Select all that apply.

oksano4ka [1.4K]

Answer:

f(5)=33f of 5 is equal to 33

Step-by-step explanation:

f(5)=33f of 5 is equal to 33ieieieuejehrdjdjhdhhrhd

7 0

3 years ago

A large manufacturing firm tests job applicants who recently graduated from college. The test scores are normally distributed wi

Sergeeva-Olga [200]

Answer:

The lowest score a college graduate must be 577.75 or greater to qualify for a responsible position and lie in the upper 6%.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 500

Standard Deviation, σ = 50

We are given that the distribution of test score is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

We have to find the value of x such that the probability is 0.06.

P(X > x) = 6% = 0.06

$P( X > x) = P( z > \displaystyle\frac{x - 500}{50})=0.06$

$= 1 - P( z \leq \displaystyle\frac{x - 500}{50})=0.06$

$=P( z \leq \displaystyle\frac{x - 500}{50})=1-0.06=0.94$

Calculation the value from standard normal z table, we have,

$P(z < 1.555) = 0.94$

$\displaystyle\frac{x - 500}{50} = 1.555\\x = 577.75$

Hence, the lowest score a college graduate must be 577.75 or greater to qualify for a responsible position and lie in the upper 6%.

5 0

4 years ago

3c+-9=18 I don't know how to do this problems ​

3c+-9=18 I don't know how to do this problems