3 years ago

What is (2x)(X). You are multiplying 2x by x.

2 answers:

8 0

This would be an example of verbal use to make this easier on yourself put x to the second power then multiply by 2 so //2*x(to the second power) = 2*to the second power

AnnZ [28]3 years ago

7 0

Your answer would be 2x^2. Multiplying an x by an x makes it a squared variable.

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-3(2b-7) in stander from asap

3241004551 [841]

Answer:

Step-by-step explanation:

= > - 3 ( 2b - 7 )

= > - 6b + 21

<h3>Hope it helps you!</h3>

6 0

3 years ago

An article gave the following summary information for fracture strengths (MPa) of n = 196 ceramic bars fired in a particular kil

Oliga [24]

Answer:

54.80 MPa to 55.92 MPa

Step-by-step explanation:

Sample mean fracture strength (x) = 55.36 MPa

Sample standard deviation (s) = 3.99 MPa

Sample size (n) = 196.

The upper and lower bounds for a 95% confidence interval are given by:

$U=x+1.960*\frac{s}{\sqrt{n}} \\L=x-1.960*\frac{s}{\sqrt{n}}$

The upper and lower bounds of the confidence interval are;

$U=55.36+1.960*\frac{3.99}{\sqrt{196}}\\U= 55.92\\L=55.36-1.960*\frac{3.99}{\sqrt{196}}\\L= 54.80\\$

The 95% confidence interval for true average fracture strength is 54.80 MPa to 55.92 MPa

4 0

4 years ago

X+y= -9<br> x+2y= -25<br><br> According to the system of equations above, what is the value of y?

Varvara68 [4.7K]

Try this option:
if x+y=-9 is I (one)
and x+2y=-25 is II (two), then
if II-I, then (x+2y)-(x+y)=-25+9 ⇔ y=-16.

6 0

3 years ago

Ms.Jackson went to the local market to buy 50 pieces of fruit. Out of the 50 pieces of fruit she bought, 14 were apples. What fr

harkovskaia [24]

Answer:

Good luck kid mark me most brainliest!

8 0

3 years ago

Read 2 more answers

In a class, there are 20 girls and 10 boys. What is the percentage of the boys?

gayaneshka [121]

Answer:

33.33%

Step-by-step explanation:

Number of boys=10
Number of girls=20
Total number of students=

Number of boys + Number of girls

10+20

Percentage of boys=

10/30×100%

33.33%

4 0

3 years ago