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nasty-shy [4]
3 years ago
8

Gymnast are lined up at the drinking fountain. The first four each take 10 3/10 seconds. The fifth takes 5 4/5 seconds. The sixt

h and seventh each take 12 2/5 seconds. Mariah, who is eighth, calculates that she has waited 1 minute, 11 4/5 seconds for her turn. Is she right?
Mathematics
1 answer:
katen-ka-za [31]3 years ago
5 0
Yes, Mariah is correct!
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What is 4/3 times 3/7=?
Sidana [21]
The answer is 4/7 in simplest form
3 0
3 years ago
A, B & C form the vertices of a triangle.
Savatey [412]

Answer:

BC = 17.2.

Step-by-step explanation:

Since CAB = 90º, this is a right triangle.

The triangle format is given below:

C

A           B

We have that AB = 8.6, and angle B measures 60º.

Length of BC:

BC is the hypotenyse.

Side AB is adjacent to angle B = 60º.

In a right triangle, angle \alpha, it's adjacent side with length s and the hypotenuse h are related by the cosine of the angle, that is:

\cos{\alpha} = \frac{s}{h}

In this question, we have an angle of 60º, with has cosine 0.5. We also have that side AB = s = 8.6, and the hypotenuse h is side BC. So

\cos{\alpha} = \frac{s}{h}

0.5 = \frac{8.6}{h}

0.5h = 8.6

h = \frac{8.6}{0.5}

h = 17.2

BC = 17.2.

4 0
3 years ago
What is the surface area of the cube shown?<br> square centimeters
Mnenie [13.5K]

Answer: 253.5

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
To make 10 loaves of<br>corn bread, how much<br>sugar would you need?​
AVprozaik [17]

Answer: 1 cup of sugar?.... hope this helps.

Step-by-step explanation:

bulk white bread

10 cups very warm water

3 pkg dry yeast

1-1/2 tbsp salt

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4 0
3 years ago
Someone please help me with these Geometry questions.
AnnZ [28]
<h3>Answer: 112.5 square units</h3>

Work Shown:

A = area of the triangle

A = base*height/2

A = 9*7/2 = 63/2 = 31.5 ... see note1 below

B = area of rectangle

B = base*height

B = 9*3 = 27

C = area of parallelogram

C = base*height .... see note2 below

C = 9*6 = 54

If you're confused where I got the 6 from, check out the attached image below.

D = total area of the composite figure

D = A+B+C

D = 31.5 + 27 + 54

D = 112.5

-------------------------

note1: The vertical component of the triangle is 9 units because this is part of the rectangle. The rectangle has opposite sides that are the same length. The parallelogram's vertical sides are 9 units long as shown by the single tickmark.

note2: a rectangle is essentially a special case of a parallelogram. In other words, a rectangle is a parallelogram with 4 right angles. So this is why the formula "area = base*height" shows up identical for both rectangles and parallelograms. Keep in mind that the height is always perpendicular to the base. You will not use the segments marked with double tickmarks.

6 0
3 years ago
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