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JulijaS [17]
3 years ago
10

Part A

Mathematics
1 answer:
Bogdan [553]3 years ago
6 0

Answer:

Step-by-step explanation:

z score= x - mean/standard deviation

1.20= x -100/15

18= x -100

118=x

z score= x - mean/standard deviation

0.5=x-73/4

2=x-73

75= x

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The density of a certain material is such that it weighs 10 ounces per gallon of volume. Express this density in pounds per pint
poizon [28]

Answer:

0.08 pounds per pint.

Step-by-step explanation:

Given: The density of a certain material is such that it weighs 10 ounces per gallon.

We are to express this density in pounds per pint.

1 gallon ⇒ 10 ounces

1 pound = 16 ounces

How many pounds? = 10 ounces.

Cross-multiplying gives;

\frac{10 * 1}{16}  = 0.625 pounds

1 gallon = 8 pints

The density in pounds per pint is;

0.625 pounds ÷ 8 pints = 0.078125 pounds per pint = 0.08 pounds per pint (answer rounded up to the nearest hundredth).

7 0
3 years ago
1, Two lines meet at a point that is also the endpoint of a ray. Set up and solve the appropriate equations to determine and y.
Alexxandr [17]

Answer:

Take a look at explanation below;

Step-by-step explanation:

See attachment( s ) below;

7 0
3 years ago
Help me out plz geometry
Leviafan [203]

Answer:

45°

Step-by-step explanation:

divide 90 by 2 see there is a right angle between them

6 0
3 years ago
Solve the inequality <br> 3y &lt;= 2y + 3
Volgvan

Answer:

y\leq 3

All real numbers less than or equal to 3

Step-by-step explanation:

we have

3y\leq 2y+3

Solve for y

Subtract 2y both sides

3y-2y\leq 2y+3-2y

y\leq 3

The solution is the interval ------> (-∞,3]

All real numbers less than or equal to 3

In a number line the solution is the shaded area down of y=3 (close circle)

see the attached figure

8 0
4 years ago
In a sample of 50 randomly selected students at a school, 38 students eat breakfast every morning. There are 652 students in the
Romashka-Z-Leto [24]
For the sample:
\frac{38}{50} = 0.76 = 76\%

Applying this to the whole population:

652 \times \frac {38}{50} = 495.52

Since we can't have "0.52 of a person" we roudn to the neares whole, or 496.
5 0
3 years ago
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