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3 years ago

A triangle has sides that measure 5 units, 7 units, and 8 units. Is this triangle a right triangle?

Mathematics

2 answers:

svp [43]3 years ago

6 0

Answer:

Step-by-step explanation:

check using Pythagorean theorem

8^2 = 5^2 + 7^2

64 = 25 + 49

64 = 74

zepelin [54]3 years ago

4 0

Answer: B

Step-by-step explanation:

a²+b²=c²

7²+5²=8²

to get ride of all ² you must square root the whole equation and come out with: 7+5=8 which is not accurate

Hope this helps!!!!!

You might be interested in

What is the order from least to greatest? -3, 1 1⁄4, -1 3⁄4, 1⁄10

Marianna [84]

Answer:

11/4 1/10/3/4 -/-3

Step-by-step explanation:

3 0

3 years ago

Suppose 10000 people are given a medical test for a disease. About1% of all people have this condition. The test results have a

Alina [70]

Answer:

The percent of the people who tested positive actually have the disease is 38.64%.

Step-by-step explanation:

Denote the events as follows:

X = a person has the disease

P = the test result is positive

N = the test result is negative

Given:

$P(X)=0.01\\P(P|X^{c})=0.15\\P(N|X)=0.10$

Compute the value of P (P|X) as follows:

$P(P|X)=1-P(P|X^{c})=1-0.15=0.85$

Compute the probability of a positive test result as follows:

$P(P)=P(P|X)P(X)+P(P|X^{c})P(X^{c})\\=(0.85\times0.10)+(0.15\times0.90)\\=0.22$

Compute the probability of a person having the disease given that he/she was tested positive as follows:

$P(X|P)=\frac{P(P|X)P(X)}{P(P)}=\frac{0.85\times0.10}{0.22} =0.3864$

The percentage of people having the disease given that he/she was tested positive is, 0.3864 × 100 = 38.64%.

3 0

3 years ago

With a short time remaining in the day, a delivery driver has time to make deliveries at 4 locations among the 7 locations rema

omeli [17]

Answer:

35 different routes

Step-by-step explanation:

The problem of how many different routes are possible if a driver wants to make deliveries at 4 locations among 7 locations is a combination problem.

Combination problems are usually selection problems, of all or part of a set of options, without considering the order in which options are selected.

The number of combinations of n objects taken r at a time is: ⁿCᵣ

So, the number of ways the driver can make deliveries at 4 locations out of 7 locations of given by

⁷C₄ = 35 different ways.

Hence, 35 different routes are possible to make deliveries at 4 locations out of 7 locations.

Hope this Helps!!!

3 0

4 years ago

To compute the area of a rectangle, you need to use the formula A=l.w if the length is 2 3/4 inches and the width is 4 1/2 inche

blagie [28]

Answer:

12 3/8

Step-by-step explanation:

A = 2 3/4 x 4 1/2

best way is to change mixed numbers to fractions and multiply and then go back to a mixed number.

11/4 x 9/2 = 99/8 = 12 3/8

8 0

3 years ago

Barry is solving the equation 3x2 - 7x + 12 = 0 using the quadratic formula. He notices that, under the radical, the expression

AURORKA [14]

B, Imaginary solutions

4 0

3 years ago

Read 2 more answers