MATHEMATICS MIDDLE SCHOOL

recall that two angles are comlementary if the sum of their measures is 90. find the measures of two complementary angles if one angle is twenty-nine times the other angle.

Answers

Answer 1

Answer:

Answer:

First angle is 3 degree

Second angle is 87 degree

Step-by-step explanation:

Let's assume

second angle is x

we are given

one angle is twenty-nine times the other angle

so, first angle is

$=29x$

we know that these two angles are complementary

so, the sum of their measures is 90

First angle + second angle =90

$x+29x=90$

$30x=90$

$x=3$

now, we can find second angle

Second angle is

$=29* 3$

$=87$

So,

First angle is 3 degree

Second angle is 87 degree

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If one hundredth is divided into ten equal parts each part is one

Stefan measured a weight of a package as 15.375 pounds. The actual weight of the package is 15.125 pounds.What is the approximate percent error Stefan made in measuring the weight of the package?write ur answer to the nearest percent.
Part b
Alexis measured the weight of the same package and got the same percent error as Stefan. Alexis and Stefan both measured different weights of the package.
What weight in pounds did Alexis measure. Explain how u know

Answers

The formula is |(estimated - exact ÷ exact) x 100|

((15.375 - 15.125) / 15.125) x 100 = 1.652892562
You might want to round that number a 'lil

Part 2: She got 14.875 b/c with the equation there are no negative percentages, so that means that since 15.375 - 15.125 = 0.25, than 15.125-0.25 = what she got.

10n squared -26n +12

Answers

10n^2-26n+12
their gcf is 2
2(5n^2-13n+6)
2(5n-3)(n-2)
n=3/5 or n=2

Answer:

Simplifying

2n + 4 + 5n = -3n + 2

Reorder the terms:

4 + 2n + 5n = -3n + 2

Combine like terms: 2n + 5n = 7n

4 + 7n = -3n + 2

Reorder the terms:

4 + 7n = 2 + -3n

Solving

4 + 7n = 2 + -3n

Solving for variable 'n'.

Move all terms containing n to the left, all other terms to the right.

Add '3n' to each side of the equation.

4 + 7n + 3n = 2 + -3n + 3n

Combine like terms: 7n + 3n = 10n

4 + 10n = 2 + -3n + 3n

Combine like terms: -3n + 3n = 0

4 + 10n = 2 + 0

4 + 10n = 2

Add '-4' to each side of the equation.

4 + -4 + 10n = 2 + -4

Combine like terms: 4 + -4 = 0

0 + 10n = 2 + -4

10n = 2 + -4

Combine like terms: 2 + -4 = -2

10n = -2

Divide each side by '10'.

n = -0.2

Simplifying

n = -0.2

Evaluate the expression (- n) ^ (n + n) + n ^ (n - n) , when n = 2

Answers

Answer:

Step-by-step explanation:

Substitute the value of the variable and simplify.

$(-(2))^((2+2)) +2^((2-2))$

$-2x^(2+2) =2^(4) = 16$

$2^(2-2) =2^(0)$

Anything raised to the power of 0 is one.

16 + 1 = 17

Answer:

Step-by-step explanation:

em saves at least 20% of what she earned for each week.is she earns $140 each week for 4 weeks wich inequality describes the total amount she saves

Answers

percent means parts out of 100
20%=20/100=2/10=1/5

20% of what she earned earned per week
'of' means multiply
20% of what she earned per week means
1/5 times what she earned per week

140 per week earned
1/5 of per week=saved
1/5 of 140=1/5 times 140=140/5=28

she saved this for 4 weeks
at least 28 saved per week for 4 weeks=28 times 4=102
she saved at least102 total
saved>$102

First, what you would do is multiply 140 and 20%. Which would give you: 28

Then you would multiply 28 by 4 and get 112

Hope this helps!!(:

What's 5.025 rounded to the nearest hundreth

Answers

5.025 rounded to the nearest hundredth is:

5.02 because 2 is less than 5

Hope I Helped!!!

When the elevator was out of service, Debi walked down 21 flights of stairs. She stopped to rest after every 3 flights. How many times did Debi stop to rest?

Answers

She stopped to rest every 7 flights.

Debi stopped 7 times to rest.
Just divide 21 by 3

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