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VARVARA [1.3K]
3 years ago
8

The Pythagorean theorem, a^2+b^2=c^2, is used to calculate the side length of a right triangle. Which equation can be used to ca

lculate the missing side length, b, of a right triangle?

Mathematics
2 answers:
spayn [35]3 years ago
7 0

Answer:

D b = sqrt(c^2 -a^2)

Step-by-step explanation:

We are using the Pythagorean theorem,

a^2+b^2=c^2

We want to solve for b

Subtract a^2 from each side

a^2 -a^2+b^2=c^2-a^2

b^2 = c^2 -a^2

Take the square root of each side

sqrt(b^2) = sqrt(c^2 -a^2)

b = sqrt(c^2 -a^2)

antiseptic1488 [7]3 years ago
6 0

Answer:

answer A : b=√(c-a)

Step-by-step explanation:

a²+b²=c²

subtract a² from both sides to isolate b²

b²=c²-a²

take the square root of both sides to get from what b² equals to what b equals

b=√(c-a)

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A 95% confidence interval is (70,110). what is the margin for error? A. 19 B.38 C.20 D.40
goldfiish [28.3K]

Answer:

C.20

Step-by-step explanation:

Confidence interval concepts:

A confidence interval has two bounds, a lower bound and an upper bound.

A confidence interval is symmetric, which means that the point estimate used is the mid point between these two bounds, that is, the mean of the two bounds.

The margin of error is the difference between the two bounds, divided by 2.

In this question:

Lower bound: 70

Upper bounf: 110

Margin of error:

M = \frac{110 - 70}{2} = \frac{40}{2} = 20

Thus the correct answer is given by option C.

3 0
3 years ago
The movie starts at 7:20 p.m. It will run for 1 hour and 40 minutes. At what time will the movie be over?​
Ganezh [65]

Answer:9:00 pm

Step-by-step explanation:

Start time: 7:20pm

Duration of movie: 1 hour 40minutes

End time= 7:20 + 1:40

= 8:60 = 9:00pm

60 minutes make 1 hour.

3 0
3 years ago
Read 2 more answers
Who started the problem correctly? The problem form is (-5) - (-1 3/4).
Veronika [31]

Answer:

Shane started the problem correctly

Step-by-step explanation:

We are given problem (-5) - (-1 3/4).

Mariah started the problem as (-5) + 1 - 3/4

Shane started the problem as (-5) + 1 + 3/4

We need to find who started the problem correctly.

The problem should be started by converting the mixed fraction into improper fraction i,e

-5-(-1\frac{3}{4})\\=-5-(-1-\frac{3}{4} )\\=-5-(-\frac{7}{4})

Now we will solve bracket by multiplying -1 with term inside the bracket i.e

=-5+\frac{7}{4}

= \frac{-13}{4}

Let's compare both the procedures now:

Mariah:

(-5) + 1 - \frac{3}{4}

=(-5) - \frac{1}{4}

=\frac{-21}{4}

Therefore, Mariah did not start the problem correctly.

Shane:

(-5) + 1 + \frac{3}{4}

= -5 + \frac{7}{4}

= \frac{-13}{4}

Therefore, Shane started the problem correctly.

6 0
2 years ago
What is the inequality shown?
tatiyna

Answer:

-4<_ 3

Step-by-step explanation:

4 0
3 years ago
\frac{h^{2}-1 }{h+3} when h=5<br><br>Plz answer
Norma-Jean [14]

Answer:

3

Step-by-step explanation:

\frac{h^{2}-1 }{h+3}

\frac{5^{2} -1}{5+3}

\frac{25-1}{8}

\frac{24}{8}

3

4 0
3 years ago
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