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Anuta_ua [19.1K]
3 years ago
6

3 1/4 x 5 write answer in simplest form please show work

Mathematics
1 answer:
umka21 [38]3 years ago
7 0

first, you need to turn 3 1/4 into an improper fraction, which is 13/4, then you multiply that by 5/1. 13*5 is 65. 65 divided by 4 is 16.25, or 16 1/4 as a fraction, hope it helps!!!!!

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For the wheel pictured on the right, assume that a person spins the pointer and is awarded the amount indicated by the pointer.
Anuta_ua [19.1K]

The expectation value is given by:

EV=\sum_{i\mathop{=}1}^nx_iP(x_i)

In this case we just have two options, each with probability 1/2, and the values of x are 2 and 9; then we have:

\begin{gathered} EV=(2)(\frac{1}{2})+(9)(\frac{1}{2}) \\ EV=2+\frac{9}{2} \\ EV=\frac{13}{2} \\ EV=6.5 \end{gathered}

Therefore, the expectation is $6.5

3 0
1 year ago
19 there is a frog and snake exhibit at
Norma-Jean [14]

Answer:

b.42

Step-by-step explanation:

the ratiois is 3 to 4 .So every 4 snakes is to 3 frogs so since there are 24 snakes devide the 24 by 4 which will give u 6 then multiply the answer by 3 which will give u 18 which represents the total number of frogs then add 18 +24 which is 42.

so then total number of frogs is 42.

5 0
2 years ago
Class A has 15 pupils and class B has 29 pupils.
Vaselesa [24]

The mean score (rounded to 2 DP) in the Math's test for class B is 86.86.

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

Class A has 15 pupils and class B has 29 pupils. The mean score for class A is 55. Hence:

Mean score of A = (sum of all scores) / 15

55 =  (sum of all scores) / 15

sum of all scores in A = 825

The mean score for both classes is 76. Hence:

[(sum of all scores in A) + (sum of all scores in B)]/(total number of pupils) = mean score of both classes

[825 + (sum of all scores in B)]/(15 + 29) = 76

sum of all scores in B = 2519

Mean score of B = (2519) / 29 = 86.86

The mean score (rounded to 2 DP) in the Math's test for class B is 86.86.

Find out more on equation at: brainly.com/question/13763238

#SPJ1

6 0
1 year ago
Calculate the angle of depression from the
s344n2d4d5 [400]

Answer:

angle of depression ≈ 53.8°

Step-by-step explanation:

the angle of depression is the measure of the angle from the horizontal downwards from the top of the flag pole.

this angle is alternate to ∠ A and is congruent to ∠ A

using the sine ratio in the right triangle

sin A = \frac{opposite}{hypotenuse} = \frac{25}{31} , then

∠ A = sin^{-1} ( \frac{25}{31} ) ≈ 53.8° ( to 1 d.p )

Angle of depression ≈ 53.8°

6 0
2 years ago
3x^2=12 solve the equation algebraically?
yawa3891 [41]

Answer: 2

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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