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3 years ago

5

What are like terms? How do you combine them? Can you give an example?

2 answers:

yan [13]3 years ago

6 0

Like terms are when numbers with and without variables can be combined. ex: 4x+6-8x+=32
you would first combine 4x and -8x because they are the same.

bixtya [17]3 years ago

4 0

Like terms are terms that have the same root and coefficient. For example, 2x and 3x both have the same variable, so you can combine them (add them).

2x + 3x = 5x

You combine the coefficients by adding them. 2 + 3 = 5.

Hope this helps!

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Cylinders A and B are similar. The volume of cylinder A is 20mm3. Calculate the volume of cylinder B.

MrRa [10]

The question is incomplete. The complete question is :

Cylinders A and B are similar. The length of the cylinder A is 4 mm and the length of cylinder B is 6 mm. The volume of cylinder A is 20mm3. Calculate the volume of cylinder B.

Answer:

67.5 $mm^3$

Step-by-step explanation:

Given that :

Cylinder A and cylinder B are similar.

Let volume of cylinder A = 20 $mm^3$

We know the volume of a cylinder is given by V = $\pi r^2 h$

where, r is the radius of the cylinder

h is the height of the cylinder

We have to find the scale factor.

The length scale factor is = $\frac{6}{4}$

$=\frac{3}{2}$

Area scale factor $=\left(\frac{3}{2}\right)^2$

$=\frac{9}{4}$

∴ Volume scale factor $=\left(\frac{3}{2}\right)^3$

$=\frac{27}{8}$

Therefore, the volume of cylinder B is $=20 \times \frac{27}{8}$

= 67.5 $mm^3$

5 0

3 years ago

QUESTION ONE:<br> Solve for h.

Setler79 [48]

Answer:

h = - 105

Step-by-step explanation:

Given

$\frac{h}{14}$ = - 7.5 ( multiply both sides by 14 to clear the fraction )

h = - 105

8 0

3 years ago

Read 2 more answers

Help!!! Choose the product . - 6p ^ 3 * (3p ^ 2 + 5p - 1)

Lunna [17]

Answer:

$-18p^{5} -30p^{4} +6p^{3}$

Step-by-step explanation:

$(-6p^{3} )(3p^2+5p-1)$

$(-6p^3)(3p^2)+(-6p^3)(5p)+(-6p^3)(-1)$

$-18p^{5} -30p^{4} +6p^{3}$

<em>hope this helps.....</em>

8 0

3 years ago

the sum of the recipocal of two consecutive even number is 7/24.one number is 6.the other number will be

coldgirl [10]

Answer:

8

Step-by-step explanation:

The numbers are 6 and 2x, then:

1/6 + 1/(2x) = 7/24
1/3 + 1/x = 7/12
(x+3)/(3x) = 7/12
12(x+3) = 7*3x
12x + 36 = 21x
21x - 12x = 36
9x = 36
x = 4

The other number is 2*4 = 8

6 0

4 years ago

Find the missing side lengths leave your answer as a racials simplest form

Nikolay [14]

Answer:

y=3 and x=3*sqrt(3)

Step-by-step explanation:

sin(30)=y/6

1/2=y/6, y=3. As it's a right angled triangle, 6^2-3^2=x^2, x=3*sqrt(3)

7 0

3 years ago

Read 2 more answers