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3 years ago

Find the surface area

Mathematics

1 answer:

harkovskaia [24]3 years ago

8 0

The answer is C 210 pi cm^3. Hope this helps

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5. During the election for class president,

Alex Ar [27]

60 more students voted for Kevin

Step-by-step explanation:

Given

total students = 300

Voted for Jennifer = 40%

Voted for Kevin = 60%

We will find number of students for one of them and then will subtract from total to find the others.

So,

Students who voted for Jennifer:

$= 40\%\ of\ 300\\=0.40*300\\=120\ students$

Students who voted for Kevin

= $=Total\ students-Students\ who\ voted\ for\ Jennifer\\=300-120\\=180\ students$

In order to calculate that how many more students voted for Kevin :

180-120 = 60

Hence,

60 more students voted for Kevin

Keywords: Percentage

Learn more about percentage at:

#LearnwithBrainly

4 0

2 years ago

Solve the following system of equations. 2x + y = 3 x = 2y - 1 Make sure there are NO SPACES in your answer. Include a comma in

mrs_skeptik [129]

Answer: $x=1;y=1$ or (1,1)

Step-by-step explanation:

You can apply the Method of substitution.

Knowing that $x = 2y - 1$ (second equation), you can substitute it into the first equation and solve for the variable y:

$2x+y=3\\2(2y - 1)+y=3\\4y-2+y=3\\5y=3+2\\5y=5\\y=1$

Now you need to substitute $y=1$ into the second equation $x = 2y - 1$ to calculate the value of the variable x. Then:

$x = 2(1) - 1\\x=2-1\\x=1$

Then, the solution is:

$x=1;y=1$ or (1,1)

5 0

2 years ago

Read 2 more answers

Evaluate the expression 3(2x - 8) /7x when x= -3

sineoko [7]

Answer:

Step-by-step explanation:

..............

6 0

2 years ago

Ms Lemon has $150 to spend on the parking and admission to the zoo.The parking will cost $18, and the admission tickets will cos

Crank

Answer:

Let y be the no. of people she can bring

18 + 16.5y <= 150

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers

Use the equation to predict how many glasses with 9

cluponka [151]

Answer:

Bella can sell 13.78 glasses with 9 pieces of bling.

Step-by-step explanation:

Given the function

y=1.36x+1.54

As pieces of the bling are represented on the x-axis, and the number of glasses is represented on the y-axis.

Given that the number of pieces of bling = x = 9

Thus,

$y = 1.36x+1.54$

$= 1.36(9)+1.54$

$=12.24+1.54$

$=13.78$

Thus, Bella can sell 13.78 glasses with 9 pieces of bling.

8 0

2 years ago