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2 years ago

Which expression shows a sum of three terms.

Mathematics

1 answer:

vladimir1956 [14]2 years ago

5 0

Answer: B) 3+y+3

This can be simplified to y+6, but the current un-simplified expression has 3 terms.

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Explanation:

Terms are separated by a plus sign. If you had something like 10x-5y, then you would write that as 10x+(-5y) showing that 10x and -5y are the two terms.

Choices A and C, xy and 6y respectively, have one term each. They are considered monomials. Mono = one, nomial = name.

Choice D is the product of the constant 3 and the binomial y+3. Binomials have two terms.

Only choice B has three terms, though we can simplify it down to two terms. I have a feeling your teacher doesn't want you to simplify it.

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Match the solid figure to the appropriate formula.

AlekseyPX

1. $L \cdot A=\pi r l$ - Cone

2. $V=\frac{4}{3} \pi r^{3}$ - Sphere

3. $T \cdot A=2 \pi r h+2 \pi r^{2}$ - Cylinder

4. $V=\frac{1}{3} B h$ - Pyramid

5. $L . A=p h$ - Prism

Solution:

1. $L \cdot A=\pi r l$

Lateral surface area of cone = $\pi r l$

where r is the radius of the cone and l is the slant height of the cone.

2. $V=\frac{4}{3} \pi r^{3}$

Volume of sphere = $\frac{4}{3} \pi r^{3}$

where r is the radius of the sphere.

3. $T \cdot A=2 \pi r h+2 \pi r^{2}$

Total surface area of cylinder = $2 \pi r h+2 \pi r^{2}$

where r is the radius of the cylinder and h is the height of the cylinder.

4. $V=\frac{1}{3} B h$

Volume of pyramid = $\frac{1}{3} B h$

where B is the base area of the pyramid and h is the height of the pyramid.

5. $L . A=p h$

Lateral surface area of prism = $p h$

where p is the perimeter of the base and h is the height of the prism.

4 0

2 years ago

I NEED HELP ASAP 17 points and BRAINLIEST!!!!!!!!!!

guajiro [1.7K]

Answer:

1st 3rd and 4th

Step-by-step explanation:

I just did that

7 0

2 years ago

Marcelina uses a blend of white corn and yellow corn to make tortilla chips at her restaurant. She needs to buy 50kg of corn in

zlopas [31]

Answer:

Option D. Marcelina spends less that the intended amount of money and buy less than enough corn

Step-by-step explanation:

Let

x----> is the amount of white corn she buys

y ---> is the amount of yellow corn she buys

we know that

She needs to buy 50 kg of corn in total

$x+y=50$ ----> equation A

She wants to spend $12 dollars total

$0.30x+0.15y=12$ ----> equation B

The solution of the system of equations is the intersection point both graphs

The solution is the point (30,20)

That means

Marcelina needs to buy 30 kg of white corn and 20 kg of yellow corn

we have the ordered pair F(15.15)

That means

15 kg of white corn and 15 kg of yellow corn

therefore

Total kg of corn bought is

$15+15=30\ kg$

$30\ kg < 50\ kg$

Total spend is

$0.30(15)+0.15(15)=\$6.75$

$\$6.75$

therefore

Marcelina spends less that the intended amount of money and buy less than enough corn

6 0

2 years ago

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In a place 100 soldiers had enough food for 60 days .how many soldiers leave the place so that food long last for 80 days

Tresset [83]

Answer:

48 soldiers leave the place.

Step-by-step explanation:

100/60=80/x
100x=4800
x=4800/100
x=48

hope it helps.

<h2>stay safe healthy and happy.</h2>

3 0

2 years ago

Algebra help please 100% correct only

shutvik [7]

2x + 3y + 2(x - y) - 3x

First you apply the distributive property:

2x +3y + 2(x) - 2(y) - 3x
2x + 3y +2x - 2y - 3x

The you combine like terms:

2x + 2x - 3x +3y - 2y
4x - 3x + y
x (x could also be 1x) + y (y could also be 1y)

The answer is x + y or 1x + 1y

5 0

3 years ago

Read 2 more answers