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ch4aika [34]
4 years ago
15

1. A person runs 2 1/4 miles in 1/2 hour. What is the miles per hour?

Mathematics
1 answer:
nataly862011 [7]4 years ago
7 0
4.5 mph (aka 4 and 1/2 mph)
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I will mark u brainliest please help
musickatia [10]

Answer:

30+(2x+7)+63=180(sum of angles of triangle )

30+2x+7+63=180

2x+100=180

2x=180-100

x=80/2

x=40

6 0
3 years ago
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Statistics show on average an adult person receives 425 pieces of mail each year with a standard deviation of 50. What are the m
Kisachek [45]

Answer:

The answer is 60.11

Step-by-step explanation:

An adult person receives 425 pieces of mail each year with a standard deviation of 50.

Now, we have the following details  :

Mean of sample = 425

sigma = 50

Standard error = \frac{425}{\sqrt{50} }

= \frac{425}{7.07} = 60.11

4 0
3 years ago
Solve foR a12-3(a-1)=11+a
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Answer:

Solve for a

a12−3(a−1)=11+a

Write the problem as a mathematical expression.

a12−3(a−1)=11+a

Simplify each term.

a12−3a+3=11+a

Graph each side of the equation. The solution is the x-value of the point of intersection.

a≈−1.1114621,1.23792371

Step-by-step explanation:

8 0
4 years ago
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Write 2^40 as an exponent with a base of: a 2^2; b 2^5; c 2^8; 2^10
MA_775_DIABLO [31]

Answer:

Step-by-step explanation:

Substitute the value of the variable into the expression and simplify.

Exact Form:  a = 6, 2 3

Decimal Form: a = 6 , 0. ¯ 6

6 0
4 years ago
Use intercepts to graph the line described by each equation. -6y=-4x+24
Aloiza [94]
First, you have to get the equation to the normal form of a line. To do this, you divide both sides by -6 to get \frac{2}{3} x-4. The y-intercept is at -4 and your slope is 2/3. Use this to graph the equation.
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3 years ago
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