2 years ago

Question 3 of 10 Solve |x + 5|= 7.

Mathematics

2 answers:

quester [9]2 years ago

6 0

Answer:

x = 2 and -2

Step-by-step explanation:

|x + 5| = 7

x + 5 = 7

x = 7 - 5

x = 2

|x + 5| = 7

-x + 5 = 7

-x = 7 - 5

-x = 2

x = -2

x = 2 and -2

damaskus [11]2 years ago

4 0

Answer:

|x + 5|= 7

-7<(x+5)<7

-7<x+5<7

-7-5<x+5-5<7-5

-12 < x <2

Step-by-step explanation:

You might be interested in

The perimeter of a rectangle is 90 feet. If the length is 15 feet more than the width, what are the dimensions of the rectangle?

Y_Kistochka [10]

Answer:

Step-by-step explanation:

I HAVE NO IDEA...SRRY

3 0

3 years ago

Which letters have 1-fold reflectional symmetry?

Veseljchak [2.6K]

capital A

lower case and upper case v

lower case and upper case o

lower case and upper case i

lower and upper case w

6 0

3 years ago

20 and 1/2 x 10 1/4 x 12

Andru [333]

Answer:

2521.5

Step-by-step explanation:

20.5 · 10.25 · 12

2521.5

5 0

3 years ago

Thirty-three college freshmen were randomly selected for an on-campus survey at their university. The participants' mean GPA was

Ivan

Answer: $\pm0.1706$

Step-by-step explanation:

Given : Sample size : n= 33

Critical value for significance level of $\alpha:0.05$ : $z_{\alpha/2}= 1.96$

Sample mean : $\overline{x}=2.5$

Standard deviation : $\sigma= 0.5$

We assume that this is a normal distribution.

Margin of error : $E=\pm z_{\alpha/2}\dfrac{\sigma}{\sqrt{n}}$

i.e. $E=\pm (1.96)\dfrac{0.5}{\sqrt{33}}=\pm0.170596102837\approx\pm0.1706$

Hence, the margin of error is $\pm0.1706$

7 0

3 years ago

The first triangle is dilated to form the second triangle. Select True or False for each statement.

malfutka [58]

Answer:

these are the step to follow so A=bh

Step-by-step explanation: A=1/2bh A=bh A=1/2 (b=b)h this is an example so you can follow how i did this

3 0

2 years ago