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abruzzese [7]
3 years ago
5

-

Mathematics
1 answer:
bulgar [2K]3 years ago
4 0

Answer/Step-by-step explanation:

m<MAH = 90° (linear pair. It is also supplementary to m<MAK = 90°)

m<MAL + m<HAL = m<MAH

Which is:

(9x + 1) + (x + 9) = 90°

Solve for x

9x + 1 + x + 9 = 90

Collect like terms

9x + x + 1 + 9 = 90

10x + 10 = 90

Subtract both sides by 10

10x + 10 - 10 = 90 - 10

10x = 80

Divide both sides by 10

x = 8

Find m<MAL

m<MAL = 9x + 1

Plug in the value of x

m<MAL = 9(8) + 1 = 72 + 1 = 73°

Find m<HAL

m<HAL = x + 9

m<HAL = 8 + 9 = 17°

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What is a descriptive adjective
NemiM [27]

Answer: Option 'b' is correct.

Step-by-step explanation:

Descriptive adjectives are those adjectives that can be defined as the type of person, shape of a person, color of any thing , that is generally to describe a person, place, animal or thing.

So, It is any word that included a noun and an adjective.

For example:

The<u> old </u>man asked the <u>pretty </u>girl for food.

here, old is a descriptive adjective to describe a man.

And pretty is a descriptive adjective to describe a girl.

Hence, Option 'b' is correct.

7 0
3 years ago
8. Given the standard deviation of 16 for a population and a 95% confidence level, find the margin
Kazeer [188]

Answer:

4.0486

Step-by-step explanation:

The margin of error is calculated using  E=z_{\frac{\alpha}{2} }*\frac{\sigma}{\sqrt{n} }

Where n=60 is the sample size and \sigma=16 is the population standard deviation.

The critical value corresponding to 95% confidence interval is z_{\frac{\alpha}{2}}=1.96

We substitute the values to obtain;

E=1.96*\frac{16}{\sqrt{60} }

E=1.96*2.06559=4.0486

3 0
3 years ago
Help help help thanks
Dmitry [639]

Answer: a=2/5b + 1/5c (I may have answered your question but idk if I did)

Step 1: Add -4a to both sides.

9a−2b+−4a=4a+c+−4a

5a−2b=c

Step 2: Add 2b to both sides.

5a−2b+2b=c+2b

5a=2b+c

Step 3: Divide both sides by 5.

5a/5=2b+c/5

a=2/5b+1/5c

7 0
3 years ago
a dvd has a diameter of 16 centimeters.what is the the area of the dvd?round the answer to the nearest hundredth.use 3.14 for n
melomori [17]

Answer:

A = 201 cm²

Step-by-step explanation:

We know that the area of a circle can be calculated with the formula:

A = πr² = π(d/2)²

with d being the diameter.

Therefore:

A = 3.14(8cm)² = 201 cm²

5 0
2 years ago
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spin [16.1K]
4.1*4.1*6=100.86 inches^2
5 0
4 years ago
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