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2 years ago

Please help me with this because i don’t understand stand this

Mathematics

2 answers:

Tamiku [17]2 years ago

5 0

Note: complementary angles are two angles whose sum is 90⁰

DENIUS [597]2 years ago

4 0

Answer:

52 degrees

Step-by-step explanation:

Complementary angles have a sum of 90. This means when added they will equal 90. So to solve had the 2 expressions and set them equal to 90.

This looks like, $(2x+18)+(6x-8)=90$ . Then, isolate the variable and solve.

Remove the parentheses

2x +18 +6x -8 =90

Add like terms

8x +10 =90

Subtract 10 from both sides

8x = 80

Divide both sides by 8

x=10

Finally, plug 10 in for x in the expression for angle b. This equals 52 degrees.

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What is the LCM of 80

grigory [225]

so is the question right?

8 0

3 years ago

Read 2 more answers

Find the slope of the line passing through the points (-5,3) and (-7,5).

Alekssandra [29.7K]

Step-by-step explanation:

points (-7,5) and (5,-3)?

This would mean to subtract the y coordinates:

5 - (-3) = 8

Then subtract the x coordinates in the same order:

-7 - 5 = -12

Then divide the y result by the x result for the slope:

8/-12 is the slope.

In simplest form, this is equivalent to -2/3

4 0

2 years ago

For Quon's first 6 quizzes he had a mean score of 33 points. After his 7th quiz his mean score was 32 points. After the 8th quiz

Alexandra [31]

Answer:

Difference in scores between his 7th and 8th quizzes = 22

Step-by-step explanation:

Given: Mean score for first 6 quizzes is 33 points. After his 7th quiz his mean score was 32 points. After the 8th quiz the mean was 34.

To find: difference in scores between his 7th and 8th quizzes

Solution:

Mean scores = Total points scored in quizzes ÷ Number of quizzes

So,

Total points scored in quizzes = Mean scores × Number of quizzes

As mean score for first 6 quizzes is 33 points,

Total points scored in 6 quizzes = 6 × 33 = 198

As mean score for first 7 quizzes is 32 points,

Total points scored in 7 quizzes = 7 × 32 = 224

So,

7th score = Total points scored in 7 quizzes - Total points scored in 6 quizzes

= 224 - 198

= 26

As mean score for first 8 quizzes is 34 points,

Total points scored in 8 quizzes = 8 × 34 = 272

So,

8th score = Total points scored in 8 quizzes - Total points scored in 7 quizzes

= 272 - 224

= 48

Therefore,

Difference in scores between his 7th and 8th quizzes = 48 - 26

= 22

7 0

3 years ago

A bowl weighs 11/40<br> lb. Express this as a decimal.

Ivanshal [37]

Answer:

Decimal: 0.275 Percentage: 27.5

Step-by-step explanation:

4 0

3 years ago

Pls help me i am struggling

deff fn [24]

Answer:

16 square inches

Step-by-step explanation:

4 x 4 = 16

4 0

3 years ago