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3 years ago

Plz tell me how u got it and hurry please

Mathematics

1 answer:

Studentka2010 [4]3 years ago

8 0

Because the shape is a cube, we know that all sides must be 5cm. To find the area of a side, you do base × height, so 5 × 5 = 25. If you look at the net, you'll notice that there are 6 faces, which means you have to do 25 × 6 = 150cm^2. I hope this helps!

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Solve sin2x + 2sinx = 0 for 0 ≤ x < 2π. ...?

IgorC [24]

Sin 2 x + 2 sin x = 0
2 sin x cos x + 2 sin x = 0 / : 2
sin x cos x + sin x = 0
sin x ( cos x + 1 ) = 0
sin x = 0, cos x + 1 = 0, cos x = - 1;
Answer:
x = 0, or x = π

3 0

3 years ago

Forty-eight pens are packaged in 4 boxes. How many pens are packaged in 9 boxes?

Monica [59]

48/4= 12 pens per box
12*9 = 108 pens in 9 boxes

6 0

3 years ago

Read 2 more answers

A school is organizing a cookout where hotdogs will be served. The hotdogs come in small packs and large packs. Each small pack

Bond [772]

The number of small packs is 2 and the number of large packs is 7

Step-by-step explanation:

A school is organizing a cookout where hot dogs will be served. The hot dogs come in small packs and large packs

Each small pack has 8 hot dogs
Each large pack has 18 hot dogs
The school bought 5 more large packs than small packs, which altogether had 142 hot dogs

We need to find the number of small packs purchased and the number of large packs purchased

Assume that the number of the small packs is x and the number of the large pack is y

∵ There are x small packs

∵ Each small pack has 8 hot dogs

∵ There are y large packs

∵ Each large pack has 18 hot dogs

∴ The total number of hot dogs in all packs = 8x + 18y

∵ All packs had 142 hot dogs

- Equate the total number of hot doges by 142

∴ 8x + 18y = 142 ⇒ (1)

∵ The school bought 5 more large packs than small packs

∴ y = x + 5 ⇒ (2)

Now we have system of equations to solve it

Substitute y in equation (1) by equation (2)

∴ 8x + 18(x + 5) = 142

- Simplify the left hand side

∴ 8x + 18x + 90 = 142

- Add like terms in the left hand side

∴ 26x + 90 = 142

- Subtract 90 from both sides

∴ 26x = 52

- Divide both sides by 26

∴ x = 2

- Substitute the value of x in equation (2) to find y

∵ y = 2 + 5

∴ y = 7

The number of small packs is 2 and the number of large packs is 7

Learn more:

You can learn more about the system of equations in brainly.com/question/2115716

LearnwithBrainly

5 0

3 years ago

Just number 23 in the picture please!!

FinnZ [79.3K]

23. To find out whether Chris, Mary Beth, and Allison are in agreement with each other, we just need to find out what the percentage is that we are working on and use what we know to understand if they are in agreement.

Chris says that 46.2% of the votes went to a certain candidate. A percent is the fraction of parts-to-whole represented in a decimal form. A percentage is NOT in decimal form, however. To get a percentage in decimal form, you can either divide the percentage by 100, or (my personal shortcut) just shift the decimal point over two places to the left.

46.2% = 0.462

Based on this, we can see that at least Chris and Allison are in agreement, since Allison said that 0.462 voters voted for the candidate in question.

To find out if Mary Beth stands with them, we just have to divide the amount of people who she says voted for the candidate by the amount of voters in total to get her percentage.

231 / 500 = 0.462

This matches the other two's results, so we can safely come to our conclusion.
YES, Chris, Mary Beth, and Allison are in agreement on the population of voters who voted for the candidate.
Hope that helped! =)

5 0

3 years ago

Read 2 more answers

A company sells boxes that are 2 3/8 feet high, 3 5/8 feet long and 1 7/8 feet wide. John has a storage room that is 8 feet wide

pychu [463]

<span>The maximum number of boxes that may be stacked on top of one another is 5 boxes. Note that the questions asks how many boxes can be stacked ON TOP of one another, not how many can fit in the storage room. Further, the boxes cannot be manipulated to change their height. Thus, to find the answer we only need 2 of the measurements given: the height of the boxes and the height of the storage unit. The height of the box is 2 3/8 feet, which can be written as 2.375 feet. The height of the storage unit is 12 feet. Simply dividing the height of the storage unit by the height of the boxes give us: 12/2.375=5.052631... Thus the maximum number of number of boxes that can be stacked is 5.</span>

5 0

3 years ago