3 years ago

60 points

Mathematics

1 answer:

aivan3 [116]3 years ago

5 0

Answer:

The 2nd to last one, the last one, and the 2nd one. Hope these are correct.

Step-by-step explanation:

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A Country sales tax is 6 2/3% . what is the percent as A fraction in simplest form

Anna007 [38]

6+2/3% <--- Given
(6+2/3)/100 <--- Definition of percent
(20/3)/100 <--- Putting the top into an improper fraction
20/300 <--- Dividing the fractions
1/15 <--- Simplifying the fraction

Hope this helps!

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3 years ago

The outside temperature is -20° F and rising at a rate of 5 degrees per hour. How long will it be before the temperature reaches

Elenna [48]

Answer:

Pretty sure it would take 4 hours.

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3 years ago

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Someone please help me I’ll give out brainliest please dont answer if you don’t know

Elden [556K]

Answer:

Step-by-step explanation:

4x12=48

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3 years ago

Which of the following are solutions to the equation below?

scoundrel [369]

Answer:

The correct options for the solution values are:

$x=2\sqrt{2}-5$

$x=-2\sqrt{2}-5$

Step-by-step explanation:

Given the expression

$x^2+10x+25=8$

Subtract 25 from both sides

$x^2+10x+25-25=8-25$

Simplify

$x^2+10x=-17$

Add 25 or 5² to both sides

$x^2+10x+5^2=8$

$x^2+10x+5^2=\left(x+5\right)^2$

so the expression becomes

$\left(x+5\right)^2=8$

$\mathrm{For\:}f^2\left(x\right)=a\mathrm{\:the\:solutions\:are\:}f\left(x\right)=\sqrt{a},\:-\sqrt{a}$

solve

$x+5=\sqrt{8}$

Subtract 5 from both sides

$x+5-5=2\sqrt{2}-5$

$x=2\sqrt{2}-5$

solve

$x+5=-\sqrt{8}$

Subtract 5 from both sides

$x+5-5=-2\sqrt{2}-5$

$x=-2\sqrt{2}-5$

Therefore, the solution to the equation

$x=2\sqrt{2}-5,\:x=-2\sqrt{2}-5$

Hence, the correct options for the solution values are:

$x=2\sqrt{2}-5$

$x=-2\sqrt{2}-5$

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3 years ago

Solve.

Anton [14]

They were born 2336 years apart.

384+1952=2336

7 0

3 years ago