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3 years ago

Which triangle is a 30° -60° -90° triangle?

Mathematics

1 answer:

Fittoniya [83]3 years ago

5 0

Answer:

Acute isosceles triangle

Step-by-step explanation:

because an acute angle is more than 45 but less then 90.

that's all i know sorry!

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Assume that the random variable X is normally distributed, with mean ? = 50 and standard deviation ? = 7. Compute the following

sineoko [7]

Answer:

Step-by-step explanation:

Given that the random variable X is normally distributed, with

mean = 50 and standard deviation = 7.

Then we have z= $\frac{x-50}{7} is N(0,1)$

Using this and normal table we find that

a) $P(56$

b) When z=0.02

we get

$x=50+0.02(7)=50.14$

c) 90th percentile z value =1.645

90th percentile of X $=50+7(1.645)\\= 50+11.515\\=61.515$

4 0

3 years ago

Each set of directions describes how to plot a point starting at the origin.

Sergio039 [100]

Answer:

right 6

down 1

(6,-1)

up 6

left 1

(-1,6)

right 1

down 6

(1,-6)

down 6

right 1

(1,-6)

left 1

up 6

(-1,6)

4 0

3 years ago

Read 2 more answers

The value of a car in each of its first 3 years is: $24,000, $18,000, $13,500. These amounts form a sequence. Which of the follo

Olegator [25]

Answer:

The second one

Step-by-step explanation:

4 0

3 years ago

James Harmon pays $850.80 per year for his life insurance. If Mr. Harmon were to pay the premiums monthly, the payments would be

Deffense [45]

Answer:

8.0%

Step-by-step explanation:

We have been given that James Harmon pays $850.80 per year for his life insurance. If Mr. Harmon were to pay the premiums monthly, the payments would be $76.57.

First of all, we will find the amount paid for the year using the monthly rate by multiplying $76.57 by 12 (1 year = 12 months).

$\text{Amount paid for the year using the monthly rate}=\$76.57\times 12$

$\text{Amount paid for the year using the monthly rate}=\$918.84$

Now, we will use percent change formula.

$\text{Percent change}=\frac{\text{Final value}-\text{Initial value}}{\text{Initial value}}\times 100$

$\text{Percent change}=\frac{\$918.84-\$850.80}{\$850.80}\times 100$

$\text{Percent change}=\frac{\$68.04}{\$850.80}\times 100$

$\text{Percent change}=0.0799717912552891\times 100$

$\text{Percent change}=7.99717912552891\%$

$\text{Percent change}\approx 8.0\%$

Therefore, Mr. Harmon is paying 8.0% more for the year using the monthly rate.

3 0

3 years ago

At a school dance Juan paid $2.05 for 1 drink an 2 cookies. Keshia paid $1.85 for 1 cookie and 2 drinks. What is the cost of 1 c

Virty [35]

Answer:

0.75 cookie

0.55 drink

Step-by-step explanation:

0.75+0.75=1.50

1.50+0.55=2.05

0.55+0.55=1.10

1.10+0.75=1.85

Hope this helps!

7 0

3 years ago