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Crazy boy [7]
2 years ago
10

Brainliest if correct

Mathematics
1 answer:
Olenka [21]2 years ago
8 0

Answer:

12 divided by 3 is 4

so multiply 1 by 4 and you get... 4

so now its 1/12+4/12 and that comes out to 5/12

Step-by-step explanation:

hope this helps :D

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Choose the algebraic expression that best represents the situation.
Igoryamba

Answer:

524 divided by n

524 ÷ n

524/n

5 0
3 years ago
Brandon buys a radio for $46.07 in a state where sales Tax is 7%
Radda [10]

Answer:

29.50

Step-by-step explanation:

Multiply the cost of an item or service by the sales tax in order to find out the total cost. The equation looks like this: Item or service cost x sales tax (in decimal form) = total sales tax. Add the total sales tax to the Item or service cost to get your total cost.

8 0
3 years ago
4) You are downloading songs for your mp3 player. Six songs cost $5.94. You want to buy 4
jeka57 [31]

Answer:

4 songs: $3.96      8 songs: $7.92

Step-by-step explanation:

  • Divide to find out how much it costs for 1 song.

5.94 / 6 = 0.99      <u>Each song costs $0.99</u>

  • Now multiply $0.99 by (number of songs)

  • 0.99 x 4 = 3.96
  • 0.99 x 8 = 7.92
8 0
4 years ago
A girl is twice as old as her sister. Five years hence, the product of their ages (in years) will be 375. Find their present age
Orlov [11]

Answer: girls=20, sister=10

Step-by-step explanation:

Let x = the girl's sister's age (present)

Let 2x= the girl's age (present)

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

According to the question

(x+5)(2x+5)=375

Expand parentheses by FOIL (First Outer Inner Last)

2x²+5x+10x+25=375

Combine like term (5x and 10x)

2x²+15x+25=375

Subtract 375 on both sides

2x²+15x+25-375=375-375

2x²+15x-350=0

Find the factors (cross factor)

(x-10)(x+17.5)=0

x=10 or x=-17.5 (rej) ⇔ the age can't be negative

the girl's age is 20, and her sister's age is 10.

7 0
3 years ago
Can someone please explain how I do this. My teacher is kinda useless.
givi [52]
<span>when the altitude is </span>drawn from the vertex of the right angle<span> of a right triangle to its hypotenuse, the altitude equals the product</span> of the two segments of the hypotenuse<span>.
(w+9)</span>²=8*18=144
w+9=12 or w+9=-12
w=3 (discard the negative number)

use the same method, z=√(9*11)=3√11

next, you can use the Pythagorean theorem to find x and y.
x=√(9²+99)=√180=6√5
y=√(11²+99)=√220=2√55
6 0
3 years ago
Read 2 more answers
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