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aivan3 [116]
3 years ago
12

The square of 9 less than a number is 3 less than the number. What is the number?

Mathematics
1 answer:
dmitriy555 [2]3 years ago
8 0
I think it’s maybe C
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Maria and Katy each have a piece of string. When they put the two pieces of string together end to end, the total length is 84in
Serga [27]

Answer: the length of Maria's piece of string is 45 inches.

the length of Katy's piece of string is 39 inches

Step-by-step explanation:

Let x represent the length of Maria's piece of string.

Let y represent the length of Katy's piece of string.

When they put the two pieces of string together end to end, the total length is 84inches. This means that

x + y = 84 - - - - - - - - - - - -1

Maria's string is 6 inches longer than Katy's. This means that

x = y + 6

Substituting x = y + 6 into equation 1, it becomes

y + 6 + y = 84

2y + 6 = 84

2y = 84 - 6 = 78

y = 78/2 = 39

x = y + 6 = 39 + 6

x = 45

8 0
3 years ago
Simplify the expression<br> -4x – 7+3 – 8x
julia-pushkina [17]

Answer:

-12x - 4

Step-by-step explanation:

if you can please mark brainlyist

5 0
2 years ago
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What is 4.7 x 4.75 =
UNO [17]
The answer for this is 22.325
6 0
3 years ago
It takes a ant farm 3 days to comsume 1/2 of an apple.At that rate,in how many days will the ant farm consume 3 apples?
alexgriva [62]

Answer:

18

Step-by-step explanation:

In three days, the ant farm consumed 1/2 an apple. In 6 days the ant farm will consume 1 apple. We can multiply 6 days by 3 for three apples.

6(3)=18 days

5 0
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The area of a circle is equal to the area of a square measuring 5 centimeters on each side find the radius of the circle
Gre4nikov [31]
The area os the square is 25 cm sq so the radius of the circle should be about 2.82 cm
4 0
3 years ago
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