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Lelechka [254]
3 years ago
11

A right triangle has a height of 20 centimeters and a base of 10 centimeters. What is the area of the triangle?

Mathematics
2 answers:
Damm [24]3 years ago
7 0

Answer:

100

Step-by-step explanation:

the area is given by half base times height and we are already given the base and the height so take a half times 10 times 20 .

juin [17]3 years ago
4 0

Answer:

100 cm^2

Step-by-step explanation:

The formula for triangle area is L x W / 2.

20 x 10 = 200

200 / 2 = 100

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A student researcher conducts an experiment that investigates the effects of a new mathematics website on student achievement. S
pickupchik [31]

Answer:

A, B and C

Step-by-step explanation:

A. Adding another researcher to provide ratings will make the study less biased.

B. A quiz or exam will show which students have a better understanding of the math material. Better quiz or exam results show that the site is more effective for a student with or without the supplemental instruction.

C. Having a greater sample size is better because a greater scope of students is covered. Different students have different abilities and learning preferences.

8 0
3 years ago
Read 2 more answers
Please help me thank you!
Romashka [77]

Answer:

the answer is 1¢26 if not try h5

7 0
2 years ago
The children in my subdivision were bored one summer and decided to hold a competition to see who could run to the end of the st
Ainat [17]

Answer:

6.7% of children who finished the race in under 45 seconds.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 75 seconds

Standard Deviation, σ =  20 seconds

We are given that the distribution of time of completion is a bell shaped distribution that is a normal distribution.

Formula:

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

P(finished the race in under 45 seconds.)

P(x < 45)

P( x < 45) = P( z < \displaystyle\frac{45 - 75}{20}) = P(z < -1.5)

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

P(x < 45) = 0.067 = 6.7\%

6.7% of children who finished the race in under 45 seconds.

4 0
3 years ago
A Florida newspaper reported on the topics that teenagers most want to discuss with their parents. The​ findings, the results of
ANEK [815]

Answer:

Since Family's Financial Situation and Religion seem more of a Family Discussion, I would round 46% to 50%. Then 37% to 40%. Add 50% and 40% and you'll get 90%.

Step-by-step explanation:

And by percent confidence level, I hope you're talking about mine...I would say 99% confidence level....lol

8 0
3 years ago
A small bottle of water holds 7 ounces of water. How many ounces of water do 9 bottles hold?
White raven [17]

Step 1

Given;

A\text{ small bottle of water holds 7 ounces of water}

Required; How many ounces of water do 9 bottles hold?

Step 2

To do this we will use the ratio;

\frac{1\text{ bottle}}{9\text{ bottles}}=\frac{7\text{ ounces}}{x}\begin{gathered} x=7(9) \\ x=63\text{ ounces} \end{gathered}

Answer;

9\text{ bottles of water holds 63 ounces}

3 0
1 year ago
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