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Digiron [165]
3 years ago
5

Value of x here is ????

+ 15" alt="30x = 15 + 15" align="absmiddle" class="latex-formula">
​
Mathematics
2 answers:
ipn [44]3 years ago
5 0

Answer:

1

Step-by-step explanation:

30x = 15 + 15

=  > 30x = 30

=  > x =  \frac{30}{30}

=  > x = 1

kramer3 years ago
3 0

\\ \sf\longmapsto 30x=15+15

  • Solve right side

\\ \sf\longmapsto 30x=30

  • Take 30to right

\\ \sf\longmapsto x=\dfrac{30}{30}

\\ \sf\longmapsto x=1

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There are 8 boys in a class, and these boys make up 40% of the total students. How many students are in the class in total? *​
hodyreva [135]

Answer:

20

Step-by-step explanation:

8 = 40%

4 = 20 %

8 + 8 + 4 = 20

20 students = 100%

3 0
3 years ago
If the volume of a sphere is 36 cubic units, what is the radius? 3 units 4√3 units 9 units
nikdorinn [45]

Answer:

radius = 2.05 units

Step-by-step explanation:

The volume of a sphere is given by the formula: V=\frac{4}{3} \pi r^3. In this formula:

  • V = volume of the sphere
  • r = radius of the sphere

Since we are given the volume of the sphere (36 units^3), we just need to solve for r in the equation for the volume of a sphere.

Substitute 36 for V into the formula and solve for r.

36=\frac{4}{3} \pi r^3

Divide both sides by \frac{4}{3}. To do this, multiply 36 by the reciprocal of \frac{4}{3}.

  • 36\times \frac{3}{4}
  • 36\times \frac{3}{4} =\frac{108}{4} \rightarrow 27

Simplify and rewrite the equation.

27=\pi r^3

Now divide both sides of the equation by pi (\pi).

  • 27\div\pi=8.59436692696

Rewrite the equation.

8.59436692696=r^3

To isolate and solve for r, cube root both sides of the equation.

  • r=\sqrt[3]{8.59436692696}
  • r=2.04835218977

The radius of this sphere is 2.04835218977 units. If your question wants this rounded to the nearest:

  • whole number: 2 units
  • tenth: 2.0 units
  • hundredth: 2.05 units
  • thousandth: 2.048 units

I'll just give the answer rounded to the nearest hundredth as that seems the most popular.

8 0
3 years ago
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diamong [38]

Answer:

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Step-by-step explanation:

Copy dot flip

7/8 × 8/1 + 22

56/8 + 22

7 + 22

29

4 0
3 years ago
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Phong is rolling a number cube and flipping a coin .what is the probability that the cube will land on 4 and the coin will land
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Probabblity that the cube lands on 4 = 1/6
Probablity that the coin lands heads up = 1/2
Probablity of both happening = 1/2 * 1/6 = 1/12
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Jack earns $50 for washing cars on the weekdays He makes an average of $4.25 in tips per hour right the function of Jacks earnin
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Answer:

Function: y= $4.25x + $50; After 6 hours: $25.50

Step-by-step explanation:


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3 years ago
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