All categories

2 years ago

Solve the equation. Check your solution 8+ x =12

Mathematics

2 answers:

aliya0001 [1]2 years ago

7 0

Answer:

Step-by-step explanation:

8+x=12

We simplify the equation to the form, which is simple to understand

8+x=12

We move all terms containing x to the left and all other terms to the right.

+1x=+12-8

We simplify left and right side of the equation.

+1x=+4

We divide both sides of the equation by 1 to get x.

BabaBlast [244]2 years ago

6 0

Answer:4

Step-by-step explanation:

You might be interested in

What is the vertex of a graph

densk [106]

It’s the point where the parabola crosses its axis of symmetry

7 0

3 years ago

Read 2 more answers

How far apart are the foci of an ellipse with a major axis of 20 feet and a minor axis of 14 feet?

omeli [17]

The solution for this question is simple. First we need to divide both numbers by 2 which will give us 10 and 7. This is the equation x^2/10^2 + y^2/7^2 = 1sqrt(100-49) = 7.14 (the answer do not have a perfect square root)
Foci are 14.28 units apart

3 0

2 years ago

colin climbs 16 feet down into tunnel and lands on the tunnel floor. then he jumps to a platform that is 2 feet above the tunnel

Ksivusya [100]

Answer:

-14

Step-by-step explanation:

-16 + 2=-14

7 0

2 years ago

A publisher reports that 45% of their readers own a laptop. A marketing executive wants to test the claim that the percentage is

nexus9112 [7]

Answer:

$z=\frac{0.40 -0.45}{\sqrt{\frac{0.45(1-0.45)}{370}}}=-1.933$

$p_v =2*P(z$

Step-by-step explanation:

Information given

n=370 represent the sample selected

$\hat p=0.4$ estimated proportion of readers owned a laptop

$p_o=0.45$ is the value that we want to test

z would represent the statistic

$p_v$ represent the p value

Creating the hypothesis

We need to conduct a hypothesis in order to test if the true proportion of readers owned a laptop is different from 0.45, the system of hypothesis are:

Null hypothesis: $p=0.45$

Alternative hypothesis: $p \neq 0.45$

The statistic is:

$z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}$ (1)

Replacing we got:

$z=\frac{0.40 -0.45}{\sqrt{\frac{0.45(1-0.45)}{370}}}=-1.933$

Calculating the p value

We have a bilateral test so then the p value would be:

$p_v =2*P(z$

8 0

2 years ago

What is 1/5 times 243

alexandr1967 [171]

Answer:

48.6

Step-by-step explanation:

(1÷5)×243=48.6

8 0

3 years ago