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3 years ago

An engine is operating at 25% of its full power. Which number line shows a point that represents 25%?

Mathematics

2 answers:

maxonik [38]3 years ago

7 0

Answer:

Step-by-step explanation: i think it D

kirill115 [55]3 years ago

6 0

Answer:

Step-by-step explanation:

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Y=-x^2+2x+10<br> y=x+2<br><br> Substitution<br> Need ASAP

aniked [119]

Answer:

$x_1=\frac{1+\sqrt{33} }{2},y_1=\frac{5+\sqrt{33} }{2}\\ \\ x_2=\frac{1-\sqrt{33} }{2},y_2=\frac{5-\sqrt{33} }{2}$

Explanation:

You must find the solution of the system using the substitution method.

System:

$y=-x^2+2x+10\\\\ y=x+2$

Substitute x+2 for y:

$x+2=y=-x^2+2x+10$

Pass all the terms to one side:

$x^2-2x+x+2-10\\ \\ x^2-x-8=0$

Use the quadratic formula to solve:

$x=\frac{-b+/-\sqrt{b^2-4ac} }{2a}\\ \\ x=\frac{-(-1)+/-\sqrt{(-1)^2-4(1)(-8)} }{2(1)}\\ \\ x=\frac{1+/-\sqrt{1+32} }{2}$

$x_1=\frac{1+\sqrt{33} }{2}\\ \\x_2=\frac{1-\sqrt{33} }{2}$

Use y = x + 2 to find the value of y:

$y_1=2+x_1=2+\frac{1+\sqrt{33} }{2}\\ \\y_1=\frac{5+\sqrt{33} }{2} \\\\y_2=2+x_2=2+\frac{1-\sqrt{33} }{2}\\ \\ y_2=\frac{5-\sqrt{33} }{2}$

6 0

3 years ago

Perform the operation and reduce the answer fully. 5/3 divided 7/4

Archy [21]

$\frac{5}{3}/\frac{7}{4} = \\\\ \frac{5}{3}*\frac{4}{7} =\\ \\ \frac{5*4}{3*7} =\\ \\ \frac{20}{21}$

Therefore, 20/21 is the answer.

3 0

4 years ago

Read 2 more answers

Which data set is represented by the modified box plot 92,88,100,136,106,79,88,86,98,115

Vera_Pavlovna [14]

Answer:

One dot mark above one hundred and thirty-six. A) 92, 88, 100, 136, 106, 79, 88, 86, 98, 115. B) 92, 88, 100 ...

Step-by-step explanation:

8 0

3 years ago

Tom ate 1/6 in the morning and 3/6 in the afternoon. How much of the bread did he eat?

frozen [14]

Answer:

4/6 or 2/3

Step-by-step explanation:

Amount of bread Tom ate= Tom ate in morning + Tom ate in evening

= 1/6 + 3/6

= 3+1/6

= 4/6

= 2/3

5 0

3 years ago

Select all the expressions that show the distance between points A and B

zhenek [66]

Answer:

I believe the answer is D, but im not quite certain, let me know if im wrong. Hope this helps!

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers