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4 years ago

What is the unit rate $140 for 18ft

Mathematics

1 answer:

scZoUnD [109]4 years ago

8 0

You have an equation:18ft=$140. To find the unit rate for ft, divide both by 18:/18ft= $140/18= $7.78/1ft.

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What percent of 218 ls 496? If necessary, round your answer to the nearest hundredth of a percent.

IgorLugansk [536]

Answer: A 2.28

Step-by-step explanation: Divide 496 by 218.

5 0

3 years ago

48% of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage is actually

oksian1 [2.3K]

Answer:

There is no sufficient evidence to support the executive claim

Step-by-step explanation:

From the question we are told that

The population proportion is $p = 0.48$

The sample proportion is $\r p = 0.45$

The sample size is $n = 300$

The level of significance is $\alpha = 0.02$

The null hypothesis is $H_o : p= 0.48$

The alternative hypothesis is $H_a : p \ne 0.48$

Generally the test statistics is mathematically evaluated as

$t = \frac{\r p - p }{ \sqrt{ \frac{p(1 - p )}{n} } }$

=> $t = \frac{0.45 - 0.48 }{ \sqrt{ \frac{0.48 (1 - 0.48 )}{300} } }$

=> $t = -1.04$

The p-value is mathematically represented as

$p-value = 2P(z > |-1.04|)$

Form the z-table

$P(z > |-1.04|) = 0.15$

=> $p-value = 2 * 0.15$

=> $p-value = 0.3$

Given that $p-value > \alpha$ we fail to reject the null hypothesis

Hence we can conclude that there is no sufficient evidence to support the executive claim

5 0

3 years ago

There are 3 blue marbles, 6 red marbles, 2 green marbles and 1 black marble in a bag. You choose a marble, REPLACE it, and choos

seraphim [82]

Answer:

Step-by-step explanation:

prob blue = 3/12 = 1/4

since you are replacing ,

prob(blue, blue) = (1/4)(1/4) = 1/16

6 0

3 years ago

Read 2 more answers

B is the midpoint of AC. AB = 5x-7, BC = 3x - 5. Find the value of x. А B C

NemiM [27]

Answer:

the value of x is 1......

as we know B is the midpoint....

then,

5x-7=3x-5

5x-3x=-5+7

2x=2

x=2/2

x=1

8 0

3 years ago

The figures abov are similar find the missing length show your work 5in by 3in 3in by x

IgorLugansk [536]

Make each a ratio, and set them equal to each other.

Larger rectangle = 3/5
smaller rectangle = x/3

3/5 = x/3

cross multiply

3/5(5)(3) = x/3(3)(5)

3(3) = x(5)

9 = 5x

Isolate the x, divide 5 from both sides

9/5 = 5x/5

x = 9/5

x = 1.8

1.8 in. is your answer

hope this helps

3 0

3 years ago