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olya-2409 [2.1K]
1 year ago
10

Simplify 1/3a+3/5-1/15+2/3a

Mathematics
2 answers:
Misha Larkins [42]1 year ago
7 0

Answer:\frac{15+8a}{15a}

Step-by-step explanation:

=\frac{1}{3a} +\frac{3}{5} -\frac{1}{15}+ \frac{2}{3a} \\= \frac{1}{3a} +\frac{8}{15} +\frac{2}{3a} \\=\frac{5+8a+10}{15a} \\=\frac{15+8a}{15a}

erica [24]1 year ago
3 0

Answer:

15+8a

-------------

15a. the calculating and collecting like terms

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The diameter of Joe's large pizza is 19 inches. Approximately how many inches are there in the circumference of the large pizza?
Burka [1]

Answer:

There are 59.66 inches in the circumference of the large pizza.

Step-by-step explanation:

It is given that:

Diameter of Joe's large pizza = 19 inches

Diameter = 2r

2r = 19

Circumference of large pizza = 2πr = 2r * π

Circumference of large pizza = 19*3.14

Circumference = 59.66 inches

Therefore,

There are 59.66 inches in the circumference of the large pizza.

6 0
2 years ago
How too solve (2x-3y)(4x-y) by multiplying polynomials by polynomials
Alex777 [14]
(2x-3y) (4x-y)
Multiply the polynomials using distributive property.
(a+b)(c+d) = ac+ad + bc + bd
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Apply plus/minus rule.
-(-a)=a and -(a)=-a
we get
=8x²-2xy-12xy+3y²
Add like terms
=8x²-14xy+3y²

Answer: 8x² - 14xy + 3y²
4 0
3 years ago
Assume the probability is one half that a child born is a girl. if a family has three​ children, what is the probability that th
arsen [322]

1/3 chances that it will be a girl or a boy because their is only a 50/50% and their is 3 children


3 0
3 years ago
Determine the scale factor of the dilation, if OA = 7 and OA' = 21.
AURORKA [14]

Answer:

i think its 3

Step-by-step explanation:

21/7=3

The second figure OA' divided by first figure OA = 21/7=3

7 0
3 years ago
Mrs. vargas bakes a pie for her book club meeting. the shaded part of the diagram below shows the amount of thw pie left after t
Rasek [7]
I saw the figure of the pie. It is a circle with 8 slices. 4 slices are shaded, the other 4 are not.

So 4/8 or 1/2 of the pie is left. 
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8 slices * 1/4 = 8/4 = 2 slices.

Out of the 4 slices remaining, Mr. Vargas ate 2 slices.

That left 2 slices from the original 8 slices.

2/8 = 1/4 of the pie remained.
8 0
3 years ago
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