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nydimaria [60]
3 years ago
9

Bonita makes $11.75/ hour and Bruce makes $12.50/hour If Bonita worked 25 hours and Bruce worked 19 hours what was the differenc

e in the amount of money they each earned
Mathematics
2 answers:
DENIUS [597]3 years ago
4 0

Answer: $56.25

Step-by-step explanation: We know that Bonita makes $11.75 per hour and Bruce makes $12.50 per hour.

To find out how much money Bonita makes if she worked 25 hours, we can multiply the amount she makes per each hour.

$11.75 x 25 hours = $293.75 for 25 hours of work.

We can do the same thing for Bruce.

$12.50 x 19 hours = $237.50 for 19 hours of work.

Now to find the difference in the amount of money they each earned. You can simply subtract $237.50 from $293.75.

$293.75 - $237.50 = $56.25

leonid [27]3 years ago
3 0
11.75(25) = 293.75
12.50(19) = 237.5

293.75 - 237.5 = $56.25
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According to the WHO report, girls who are 2-years old have a mean head circumference of 47.18cm with a standard deviation of 1.
Verdich [7]

Answer:

1. z = -1.91429

The z score tells us that the head circumference of the girl with the down syndrome ( 44.5 cm) is 1.91429 standard deviations below the mean or average head circumference

2. 2.7792%

Step-by-step explanation:

1. Relative to the WHO data, what is this girls z-score?

z score formula is:

z = (x-μ)/σ, where

x is the raw score = 44.5 cm

μ is the population mean = 47.18cm

σ is the population standard deviation = 1.40cm

z = 44.5 - 47.18/1.40

z = -1.91429

What does the z score tell us?

The z score tells us that the head circumference of the girl with the down syndrome ( 44.5 cm) is 1.91429 standard deviations below the mean or average head circumference

2. Using the WHO data in a normal model, what percentage of the girls has a head circumference that is smaller than the girl with Down's Syndrome?

z score = -1.91429

Probability value from Z-Table:

P(z =-1.91429) = P(x<44.5) = 0.027792

Converting to percentage = 0.027792 × 100

= 2.7792%

6 0
2 years ago
What is <br> -5 3/4 - 3 1/2 =
Luba_88 [7]

Answer:

-9 1/4

Step-by-step explanation:

-5 3/4 - 3 1/2

-5 3/4 - 3 2/4

-9 1/4

7 0
2 years ago
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There are 12 chocolate chip cookies in an assortment of 48 cookies. What percent of the cookies are chocolate chip?
Annette [7]

Answer: 20 Chocolate Chips

Step-by-step explanation:

6 0
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Please help me!!! (Don't joke or banned)
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<u>Answer:</u>

<h2>P = $100.80</h2>

<u>Steps:</u>

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Pc = 120 - (120/100×20)

Pc = 120 - (1.2×20)

Pc = 120 - 24

Pc = 96

  • Price after sales tax:

P = Pc + (Pc/100×5)

P = 96 + (96/100×5)

P = 96 + (0.96×5)

P = 96 + 4.8

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3 years ago
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Consider the equation x2+4x+9=0 in standard form. Which equation shows the coefficients a, b, and c correctly substituted into t
Afina-wow [57]

Answer:

<h2>x = -2+i√5 and  -2i-√5</h2>

Step-by-step explanation:

The general form of a quadratic equation is ax²+bx+c = 0

Given the quadratic equation x²+4x+9=0 in its standard form, on comparing with the general equation we can get the value of the constant a, b and c as shown;

ax² = x²

a = 1

bx = 4x

b = 4

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The quadratic formula is given as x = -b±√(b²-4ac)/2a

Substituting the constant;

x = -4±√(4²-4(1)(9))/2(1)

x = -4 ±√(16-36)/2

x = -4±√-20/2

x = -4±(√-1*√20)/2

Note that √-1 = i

x = -4±(i√4*5)/2

x = (-4±i2√5)/2

x = -4/2±i2√5/2

x = -2±i√5

The solution to the quadratic equation are  -2+i√5 and  -2i-√5

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3 years ago
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