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slega [8]
2 years ago
11

Five less than one-third of a number is the same as twice the number.

Mathematics
2 answers:
Pavlova-9 [17]2 years ago
4 0

Answer:

x = 15 / 7

Step-by-step explanation:

Leno4ka [110]2 years ago
3 0

Answer:

Step-by-step explanation:

Let the number = x

1/3x - 5= 2x             Multiply both sides by 3

1*x - 5*3 = 2x*3      Expand and collect like terms.

x - 15 = 6x                Subtract x from both sides

x - x - 15 = 6x-x        Collect like terms

- 15 = 5x                   Divide both sides by 5

-15/5 = 5x/5             do the Division

- 3 = x

Check

1/3(-3) - 5 = 2(-3)

-1 - 5 = - 6

- 6 = - 6

which checks.

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Find the volume of a sphere with a diameter 30 ft. Give your answer in terms of Pi.
Wittaler [7]

Answer:

4500π cubic feet

Step-by-step explanation:

Formula for Sphere Volume  V =  (4/3)*π*r^3

radius = (1/2)*diameter = (1/2)*30feet = 15 feet

V = (4/3)* π * (15)^3 = 4500π cubic feet

4 0
3 years ago
Two equivalent expressions for 7x.
scoundrel [369]

Answer:

Combine any like terms on each side of the equation: x-terms with x-terms and constants with constants. Arrange the terms in the same order, usually x-term before constants. If all of the terms in the two expressions are identical, then the two expressions are equivalent.

Step-by-step explanation:

Instructions! If you still dont get it Visit KhanAcademy.com! ^w^

6 0
2 years ago
Read 2 more answers
Males have red blood cell counts with a mean of 4.719 and a standard deviation of .490, while females have red blood cell counts
iVinArrow [24]

Answer:

  • <em><u>The female  has a higher count relative to the sample of females than the male relative to the sample of males.</u></em>

Explanation:

When you want to compare the means of two samples with different statistics you may use the z-score.

The z-score measures how far a value (data point) is from the mean, in terms of the standard deviation.

The z-score is calculated as:

          z-score=(x-\mu )}/\sigma

Where:

          x=\text{value of the data}\\\\\mu =mean\\\\\sigma = \text{standard deviation}

<u>1. Male with a count of 5.58 </u>

       z-score=(5.58-4.719)/0.490=1.757

<u />

<u>2. Female with a count of 5.23</u>

     z-score=(5.23-4.349)/0.402=2.192

Therefor, the z-score of the female is greater than the z-score of the male.

The greater z-score means that, relative to her group, the female has a higher count than the male.

7 0
3 years ago
I WILL GIVE BRAINLIEST!!!
MrMuchimi

Answer:

Answer is after 20 miles

Step-by-step explanation:

10 +2.5x = 3x

10 = 3x-2.5x

10=0.5x

10/.5=x

x=20

At 20 miles they both have a cost of 60

4 0
2 years ago
Read 2 more answers
Find the 4 angles and the measure of are abd
Svetradugi [14.3K]

Answer:

Angle 1 = 80 (by definition)

Angle 3 = 180 - 80 = 100

Angle 4 + Angle 2 = 90

Also, Angle 2 = 40 (by definition)

So Anglee 4 = 50

6 0
3 years ago
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