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3 years ago

A prism is created using 2 pentagons as bases. The apothem of each pentagon 2.8 centimeters

Mathematics

2 answers:

makvit [3.9K]3 years ago

6 0

Answer:

I think is B, 14^2+7x

Step-by-step explanation:

maksim [4K]3 years ago

4 0

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Alicia can row 6 miles downstream in the same time it takes her to row 4 miles upstream.She rows downstream miles/hour faster th

disa [49]

Answer:

Option D. 9 mi/hr downstream, 6 mi/hr upstream

Step-by-step explanation:

The complete question is

Alicia can row 6 miles downstream in the same time it takes her to row 4 miles upstream. She rows downstream 3 miles/hour faster than she rows upstream. Find Alicia’s rowing rate each way

Define the variables

Let

x -----> Alicia's rowing rate downstream in miles per hour

y ----> Alicia's rowing rate upstream in miles per hour

we know that

The rate is equal to the distance divided by the time

The time is equal to the distance divided by the rate

we have

$\frac{6}{x}=\frac{4}{y}$

$4x=6y$

$x=1.5y$ -----> equation A

$x=y+3$ ----> equation B

equate equation A and equation B

$1.5y=y+3$

$1.5y-y=3$

$0.5y=3$

$y=6$

Find the value of x

$x=1.5(6)=9$

therefore

Alicia's rowing rate downstream is 9 mi/h

Alicia's rowing rate upstream is 6 mi/h

6 0

4 years ago

I’ll give 15. What is the missing side length in the triangle below?

Dmitry [639]

Answer:

40 ft

Step-by-step explanation:

The fiagram shows the right triangle (one angle is right angle).

By the Pythagorean theorem,

$\text{Leg}_1^2+\text{Leg}_2^2=\text{Hypotenuse}^2$

From the diagram,

$\text{Leg}_1=24\ ft\\ \\\text{Leg}_2=32\ ft\\ \\\text{Hypotenuse}=c\ ft,$

then

$24^2+32^2=c^2\\ \\c^2=576+1,024\\ \\c^2=1,600\\ \\c^2=40^2\\ \\c=40\ ft$

5 0

3 years ago

Read 2 more answers

If observed frequencies are 5,10,15 and expected frequencies are each equal to 10 then chi square value is

lina2011 [118]

Answer:

Step-by-step explanation:

Given :

Observed values = 5, 10, 15

Expected freqencies = 10

χ² = Σ(observed - Expected)² / Expected

χ² = (5-10)²/10 + (10-10)²/10 + (15-10)²/10

χ² = 25/10 + 0/10 + 25/10

χ² = 2.5 + 0 + 2.5

χ² = 5

5 0

3 years ago

Um ônibus escola pode transporta ete 32 alunos quantos ônibus iguais são necessários para transportar 1 120 alunos

avanturin [10]

Answer:

sorry i dont know what the answer is

Step-by-step explanation:

3 0

3 years ago

Select the best answer for the question.

kogti [31]

Answer:

Step-by-step explanation:

hopefully it helps :).

5 0

3 years ago