The ratio of boys to girls of a class is 3 to 4. If there are 42 students, how many of them are boys? Show your work.

Answers

Answer 1

Answer:

Answer:

There would be 18 boys.

Step-by-step explanation:

If the ratio of boys to girls is 3:4 that means in a classroom of 7 people there would be 3 boys and 4 girls. So all you do is multiply 3 boys by 6 (18) and 4 girls by 6 (24) cuz 7*6=42 which means that there would be a total of 42 students with 18 boys and 24 girls.

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The function y = 100(0.5) x4models the percent, y, of an initial dose of medicine remaining in a patientbloodstream after x hours.Based on the model, what percent of the initial amount of medicine will remain in the patient’s bloodstream after 10 hours? Round to the nearest whole percent.
you baked 42 chocolate cupcakes and 28 red velvet cupcakes.you package them in boxes that have the same ratio of chocolate to red velvet cupcakes as the total cupcakes. how many red velvet cupcakes are in a box thar has 24 chocolate cupcakes?
Plz help me plz asap anybody is welcome to answer
Which answer describes the calculations that could be used to solve this problem? Bonita brought 3 bags of apples and 2 pounds of grapes to the picnic. Each bag of apples weighed 4 pounds. How many pounds of apples and grapes did Bonita bring to the picnic? A. Add 2 + 3. Then multiply the sum by 4. B. Multiply 3 × 4. Then add 2 to the product. C. Add 2 + 4. Then multiply the sum by 3. D. Multiply 2 × 4. Then add 3 to the product.
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Jonathas wants to get a cell phone. The phone costs $59 and the plan costs $39 per month. Which expression represents the total cost of a cell phone after m months? 39m
59m
59 + 39m
39 + 59m

Answers

$59 is the fixed cost of the phone and that will never change. This means it won't have a variable attached and will simply be added on to the cost

$39 is how much Jonathans will pay per month. This will change based on how many months pass. This will have the variable attached.

This means the formula is:

59 + 39m

Let me know if this made sense!

~Just a girl in love with Shawn Mendes

Answer:

i say c

Step-by-step explanation:

What is the area of this regular polygon a 16.8 b 23.4 c 46.8 d 49.2

Answers

There we multiply by 6 because there are six sides in a polygon
6* (2.6*3/2)
= 6* 3.9
= 23.4
Therefore the answer will be option b (23.4)
Hope it helped you.
If it helped please mark as the brainliest answer.

A football field is 300 ft x 160 ft . If A coach ask his players to run from one corner to the opposite corner diagonally, how far will they run

Answers

48000f2t2 pretty sure that is it

Answer: 340

Step-by-step explanation:

The area of the base of a prism is 50 mm2. The perimeter of the base is 30 mm. The height of the prism is 7 mm. What is the surface area of the prism? mm2

Answers

Given:
Base of the prism: 50 mm²
Perimeter of base: 30 mm
Height of prism: 7 mm

The formula of the surface area of a prism is
S.A = 2 × Area of base + Perimeter of base × Height of prism
Plug in the given
S.A = 2 × 50 + 30 × 7
= 100 + 210
= 310 mm²

A sales associate at a computer store receives a bonus of $100 for every computer he sells. He wants to make $2,500 in bonuses next month. Write and solve an inequality to find the minimum number of computers he must sell.

Answers

Answer:

The inequality that describes this problem is $100x \ge 2500$ , and the minimum number of computers he must sell is 25.

Step-by-step explanation:

Since there is no restriction on the number of computers he must sell, an inequality can help us describe the situation.

Writing the inequality.

Let x be the number of computers he sells the next month, since he receives a bonus of $100 per computer he sells the total amount he will make for x computers is

$100x$

And since he wants to make $2,500 in bonuses, the inequality that describes that situation is

$100x \ge 2500$

Solving the inequality.

In order to find the exact number of computers he must sell, we need to solve for the inequality.

$100x \ge 2500$

Since 100 is multiplying to x, in order to move that 100 to the other side, we need to apply the inverse operation to multiplication, which is division. We can then divide both sides by 100

$\cfrac{100x}{100} \ge \cfrac{2500}{100}$

So then we can simplify to get

$x \ge 25$

Thus the minimum number of computers he must sell is 25.

$100x should be greater than or equal to $2500. X being the number of computers sold. If you divide 100 by 2500 you will know how many computers he need to sell.
$100x >(or equal to) $2500

Ian picked 5 times as many berries as Michelle. Joe take seven times as many theories as Michelle. Together they picked 208 berries. how many berries did Joe pick? draw a diagram and explain how you found your answer

Answers

$x-\ number \ of\ Michelle's\ berries\ny-\ number\ of \ Joe's\ berries\nz-number\ of \ Ian's\ berries\n\nz=5x\ny=7x\nx+y+z=208\n\nx+5x+7x=208\n\n13x=208\ \ \ \ | divide\ by\ 13\n\nx=16\n\ny=16*7=112\n\nJoe\ picked\ 12\ berries.$

Ian =x
Michelle=y
Joe=z

5y=x
7y=z
so 5z=35y=7x
5z=7x
208=x+y+z
substitute
x and z to get
208=(5y)+y+(7y) or
208=13 y
divide both sides by 13
michelle picked 16
Joe picked 7 times than Michelle so
16 times 7=112

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