1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
UNO [17]
3 years ago
12

Hey i need some help with this prob

Mathematics
2 answers:
sp2606 [1]3 years ago
4 0
82 is the hypotenuse.

Follow the c² - b² = a²  formula, in which c is the hypotenuse.

Plug in the numbers

(82)² - (80)² = (a)²

Simplify.

82 x 82 = 6724
80 x 80 = 6400

6742 - 6400 = a²

Subtract:

a² = 6724 - 6400
a² = 342


Finally, root both sides

√a² = √342
a = √342
a = 18.49

You're closest answer through rounding is (A) 18.

hope this helps
algol [13]3 years ago
3 0
The answer would be: 82^2+80^2 = 18, using the Pythagorean theorem, the answer would be: \sqrt{324} or 18.

Hope this helped! c:
You might be interested in
What is the volume of this square pyramid? <br> 1296 cm^3<br> 1620cm^3<br> 3888cm^3<br> 11,664cm^4
vampirchik [111]

\bf \textit{volum of a pyramid}\\\\ V=\cfrac{1}{3}Bh~~ \begin{cases} B=area~of\\ \qquad its~base\\ h=height\\[-0.5em] \hrulefill\\ B=\stackrel{18\times 18}{324}\\ h=12 \end{cases}\implies V=\cfrac{1}{3}(324)(12)\implies V=1296

3 0
3 years ago
A social psychologist predicted that ratings of an individual’s social desirability would be influenced by their physical attrac
marshall27 [118]

Answer:

It is stated in the query that the more attractive the individual, the higher their rank of desirability.

Step-by-step explanation:

This means that we should conclude that the alternative explanation of "higher degree of desire contributes to higher levels of social attractiveness"

In the event of a null hypothesis, we will believe that the degree of attractiveness has no impact on the score of cultural desirability.

(1) Null hypothesis:- The level of attraction does not have an impact on the rating of social desirability.

(2) Alternate hypothesis:- The level of attraction has a positive effect on the ranking of social desirability.

(3) The error of Type I is characterized as the rejection of the true null hypothesis. Therefore, in this case, the type I mistake would be that "the level of attraction has a positive effect on the rating of social desirability while the level of attraction does not have an impact on the rating of social desirability."

(4) The error of type II is characterized as the failure to reject the false null hypothesis. Thus, in this situation, the Type II error would be that "the level of attraction has no impact on the rating of social desirability while the real level of attraction has a positive effect on the rating of social desirability."

(5) We know that the likelihood of having a Form I error is equal to the degree of significance (in percent terms). The significance level, in this case, is 0.05, so the likelihood of making a form I error is 0.05 * 100=5 percent.

Therefore, there is a 5 percent risk of making a Type I mistake.

3 0
3 years ago
Can someone help me will give brainlist
Levart [38]

Answer:

Step-by-step explanation:

If we  roll a multiple of 5 we will get one of the following:

5, 10, 15 , 20.

None of these is a perfect square so  they are mutually exlusive,

6 0
1 year ago
In an aquarium, the ratio of sharks to dolphins is 3 : 5 and the ratio of
Molodets [167]

Step-by-step explanation:

step 1: how many dolphins

there are 6 sharks

sharks to dolphins is 3 to 5

3 S to 5 D

we can divide 6 (amount of sharks known) by 3, to get what a ratio of 1 is

6 ÷ 3 = 2

so 2 sharks is = 1 part or ratio

now we can times by 5 to get a ratio of 5

5 × 2 = 10

there are 10 Dolphins

Step 2: How many starfish

repeat the steps above but for the ratio 2: 7 where 2 is the Dolfin ratio and there are 10 dolphins

put in questions answer you got

3 0
2 years ago
Read 2 more answers
Diameter is 22.5m. Calculate the area (round your answer to 2 decimal places). Use 3.14 for Pi.​
Tamiku [17]

Answer:

because r=d/2 it will be

22.5/2=r

r=11.25m

c=2×3.14×11.25

c=70.65msquare

c=7065/1oo

7 0
3 years ago
Other questions:
  • Dorie can paint an entire house in 12 hours, and Mercedes can paint the same house in 8 hours. How long would it take the 2 of t
    9·2 answers
  • Passes through (1,9), slope = 2
    7·1 answer
  • The face of the triangular concrete panel shown has an area of 22 square meters, and its base is 3 meters longer than twice its
    14·1 answer
  • Jeremy wants to try to predict how much money he is going to spend when he goes to the store. He kept track of how much he spent
    13·1 answer
  • 5 irrational number​
    14·2 answers
  • Find the slope of the line that contains the points (-2, 5) and (-1, 7).
    5·1 answer
  • Included picture<br> Question is not hard so please answer correctly
    15·2 answers
  • Identify the terms in the algebraic expression below<br><br> 7h - 2 + x^2
    11·1 answer
  • How does a woman being treated as a servant for a man show that equality between men and women is not being promoted?? PLS HELP;
    14·2 answers
  • evaluate the integral by reversing the order of integration. $ \displaystyle\int {0}^{{\color{red}4}} \displaystyle\int {\sqrt{x
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!