3 years ago

What is -3x+13=16 help me with each step.

Mathematics

1 answer:

hoa [83]3 years ago

6 0

-3x+13=16

Move +13 to the other side. Sign changes from +13 to -13.

-3x+13-13=16-13

-3x=16-13

-3x=3

Divide by -3 for both sides.

-3/-3x=3/-3

Cross out -3 and -3, divide by -3, then becomes 1*1*x=x

x=-1

Answer: x=-1

You might be interested in

Which set of numbers is in order from least to greatest?

ozzi

Eliminate A immediately, because "367,259 < 364,798" is false.

Elim. C because "367,313 < 367,259" is false.

Thus, B is the correct answer.

5 0

3 years ago

Read 2 more answers

A fair coin is flipped twelve times. What is the probability of the coin landing tails up exactly nine times?

seraphim [82]

Answer:

$P\left(E\right)=\frac{55}{1024}$

Step-by-step explanation:

Given that a fair coin is flipped twelve times.

It means the number of possible sequences of heads and tails would be:

2¹² = 4096

We can determine the number of ways that such a sequence could contain exactly 9 tails is the number of ways of choosing 9 out of 12, using the formula

$nCr=\frac{n!}{r!\left(n-r\right)!}$

Plug in n = 12 and r = 9

$=\frac{12!}{9!\left(12-9\right)!}$

$=\frac{12!}{9!\cdot \:3!}$

$=\frac{12\cdot \:11\cdot \:10}{3!}$ ∵ $\frac{12!}{9!}=12\cdot \:11\cdot \:10$

$=\frac{1320}{6}$ ∵ $3!\:=\:3\times 2\times 1=6$

$=220$

Thus, the probability will be:

$P\left(E\right)=\frac{n\left(E\right)}{n\left(S\right)}$

$=\frac{220}{4096}$

$=\frac{55}{1024}$

Thus, the probability of the coin landing tails up exactly nine times will be:

$P\left(E\right)=\frac{55}{1024}$

4 0

3 years ago

danni is working a sample booth at the national soda and beverage convention. she is paid $1.50 for each of the first ten tastin

Nostrana [21]

I think the answer is $129

7 0

3 years ago

Read 2 more answers

20 POINTS 20 POINTS. Will give Brainliest.

Simora [160]

Answer:

using y=mx+c

C=7

y=8

x= -4

we're looking for m

8=-4m +7

1= -4m

m= -1/4

8 0

3 years ago

Read 2 more answers

The price of a dress is reduced by 50%.when the dress still does not sell, it is reduced by 50% of the reduced price. if the

7nadin3 [17]

36 × 4
= $144
................

5 0

3 years ago

Read 2 more answers