Mr. Hammond earns $13.75 per hours and worked 20.5 hours last week. How much did he earn last week?

Members of a basketball team suspect the coin used for the coin toss at the beginning of their games is unfair. They believe it

Nadusha1986 [10]

Answer:

The trial provides enough evidence that the probability of obtaining heads is less than 0.50 and that the coin is unfair.

Step-by-step explanation:

The explanation is in the picture

5 0

3 years ago

Mr. Holloway is a craftsman who makes custom guitars by hand. His last order was for 2 guitars, and it took him 8 weeks to make

o-na [289]

Answer:

It took Mr. Holloway 28 weeks to make 7 guitars.

Step-by-step explanation:

The question is incomplete, but if we are trying to find out how many weeks it would take him to make 7 guitars then the answer would be 28.

First you have to find out how many weeks it takes him to make 1 guitar.

8 ÷ 2 = 4 (4 weeks to make 1 guitar)

Then you have to multiply 4 by 7 since it takes 4 weeks to make 1 guitar.

4 * 7 = 28 (28 weeks to make 7 guitars)

7 0

3 years ago

13. (07.05 MC) What is the solution to the equation 5x + 2(x - 4) = 5x + x - 10? (1 point) O

TEA [102]

Answer:

x = -2

Step-by-step explanation:

5x + 2(x - 4) = 5x + x - 10

First, we need to to multiply out the parathesis in the equation:

5x + 2(x - 4) = 5x + x - 10

5x + 2x - 8 = 5x + x - 10

Next, we can combine "like terms" to simplify the equation further:

5x + 2x - 8 = 5x + x - 10

7x - 8 = 6x - 10

Now we can isolate the variable "x" to one side:

7x - 8 = 6x - 10

x - 8 = -10

x = -2

To check our work, we can replace x with -2 in our original equation:

5x + 2(x - 4) = 5x + x - 10

5(-2) + 2 (-2 - 4) = 5(-2) + -2 - 10

-10 + 2 (-6) = -10 -2 - 10

-22 = -22

I hope this helps!

-TheBusinessMan

7 0

3 years ago

The rabbit population in certain area is 200% of last year’s population. There are 1,100 rabbits this year. How many were there

IRINA_888 [86]

Answer:

550

Step-by-step explanation:

If it is 200% more you have to divide by two and you get 550

5 0

3 years ago

Consumer Reports uses a 100-point customer satisfaction score to rate the nations major chain stores. Assume that from the past

zzz [600]

Answer:

(A) Mean = 84

(B) Variance = 118.714

(C) Standard deviation = 10.89

Step-by-step explanation:

Data provided:

number of observations, n = 15

sample of 15 costco customer satisfaction scores follow

X $X-\bar{X}$ $(X-\bar{X})^2$

95 11 121

90 6 36

83 -1 1

64 -20 400

95 11 121

98 14 196

80 -4 16

83 -1 1

82 -2 4

93 9 81

86 2 4

80 -4 16

94 10 100

75 -9 81

62 -22 484

================================================

∑X = 1260 ∑= 1662

Now,

(A) Mean = $\frac{\textup{Sum of all observations}}{\textup{Total number of observations}}$

or

Mean = $\frac{\textup{1260}}{\textup{15}}$ = 84

(B) Variance = $\frac{\sum(X-\bar{X})^2}{n-1}$

or

Variance = $\frac{1662}{15-1}$

or

Variance = 118.714

(C) Standard deviation = √Variance = √118.714 = 10.89

7 0

3 years ago