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4 years ago

Of the 50 students in class A 48%, are boys. how many of the students are boys

Mathematics

2 answers:

rusak2 [61]4 years ago

7 0

The answer is that 24 of them are boys. Hope this helps.

Ivenika [448]4 years ago

4 0

48% of 50 is equal to 24.

I hope this is helpful! :D

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Write and solve a system of equations. Be sure to label the variables. The sum of two numbers is twelve. Two times the first num

adoni [48]

The solution to the system of equations is x = 8, y = 4.

<h3>How to write the system of equations?</h3>

First, let's define our variables as x and y.

"the sum of two numbers is twelve" is written as:

x + y = 12

"two times the first number minus three times the second number is four" is written as:

2x - 3y = 4

Then the system of equations is:

x + y = 12

2x - 3y = 4

<h3>How to solve it?</h3>

First, we isolate one of the variables in one equation, I will isolate x on the first one to get:

x = 12 - y

Now we replace this on the other equation, so we get:

2*(12 - y) - 3y = 4

Now we can solve this for y.

24 - 2y - 3y = 4

24 - 5y = 4

24 - 4 = 5y

20/5 = y = 4

Now we know the value of y, and:

x = 12 - y = 12 - 4 = 8

Then the solution of the system is:

x = 8, y = 4.

If you want to learn more about systems of equations, you can read:

brainly.com/question/13729904

7 0

2 years ago

Kelli had $ 0.55 to buy a sandwich. Gustavo had $ 1.64. They decided to buy a snack together and share it. How much money do the

just olya [345]

Answer:

$1.09 per sandwich

Step-by-step explanation:

$1.64-0.55 = $1.09 per sandwich

6 0

3 years ago

The work of a student to solve the equation 2(3x − 4) = 8 + 2x + 4 is shown below:

Ray Of Light [21]

Answer:

B. Step 2; 6x - 8 = 12x + 2x

Step-by-step explanation:

ndndndndnndncncncnc

8 0

3 years ago

Read 2 more answers

Please awnser questions, no links, no I dont know 9.

dezoksy [38]

I only see the store question but the answer is correct, 600

8 0

3 years ago

Read 2 more answers

A company selling light bulbs claims in its advertisements that its light bulbs’ average life is 1000 hours. In fact, the life s

tamaranim1 [39]

Answer:

15.87%

Step-by-step explanation:

Given that:

The mean (μ) = 1000 hours, the standard deviation (σ) = 100 hours.

The z score provides a means of measurement in statistics to determine the variation of a raw score from the mean. The z score is given as:

$z=\frac{x-\mu}{\sigma}$

To find that a randomly chosen light bulb will last less than 900 hours:

$z=\frac{x-\mu}{\sigma}=\frac{9000-1000}{100}=-1$

Therefore, P(x < 900) = P(z < -1) = 0.1587 = 15.87%

7 0

3 years ago