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3 years ago

Which angles below are complementary angles and which are supplementary angles?

Mathematics

1 answer:

Bezzdna [24]3 years ago

4 0

Answer:

(B)

Complementary Angles:∠FAD and ∠DAH

Supplementary angles:∠EAC and ∠CAH

Step-by-step explanation:

complimentary-angles add up to 90 degrees

supplementary-angles add up to 180 degrees

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The distribution of the amount of money spent by students for textbooks in a semester is approximately normal in shape with a me

zimovet [89]

Answer:

Option D) $275

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = $235

Standard Deviation, σ = $20

We are given that the distribution of amount of money spent by students is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

We have to find the value of x such that the probability is 0.975

$P( X < x) = P( z < \displaystyle\frac{x - 235}{20})=0.975$

Calculation the value from standard normal z table, we have,

$P( z < 1.960) = 0.975$

$\displaystyle\frac{x - 235}{20} = 1.960\\x =274.2 \approx 275$

Approximately 97.5% of the students spent below $275 on textbook.

7 0

2 years ago

Which of the following statement is incorrect? .

Nuetrik [128]

Answer:

b) Commutative property is true for subtraction of Rational numbers

Step-by-step explanation:

Option B is incorrect.
Commutative property is not true for subtraction of Rational numbers .

5 0

2 years ago

Read 2 more answers

HELP FOR BRAINLIEST ANSWER!!!!!

ss7ja [257]

i believe it would be: 1/2y = x

y = 2.5

7 0

2 years ago

Which statements about squares and equilateral triangles are true?

12345 [234]

Answer,a and b, sorry if they are wrong

5 0

2 years ago

Write an equation in point slope form for each line<br> Slope is 3 and (-2,-1) is on the line

elena-14-01-66 [18.8K]

Answer:

$\huge \blue{y + 1 = 3(x + 2) } \\$

Step-by-step explanation:

To find an equation of a line in point slope form when given the slope and a point we use the formula

$y - y_1 = m(x - x_1)$

From the question we have the final answer as

$y + 1 = 3(x + 2)$

Hope this helps you

6 0

2 years ago