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Maru [420]
2 years ago
9

30 POINTS IF SOMEONE ANSWERS CORRECTLY (MATH)

Mathematics
2 answers:
Alekssandra [29.7K]2 years ago
8 0

a. factor A = x^2 -30x + 225 = (x - 15)(x - 15)

side length =<u> (x - 15)</u>

b. add (x - 15) four times = 4(x - 15) =<u> 4x - 60</u>

Rzqust [24]2 years ago
7 0

Sorry! It would not let me write the numbers hopefully I help :p I tried.

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box A has 4 marbles.box A has 5% of the marbles.what is the total amount of marbles in all four boxes
laila [671]
Box A is 4. 4 is 5% of the total boxes.
5% = 1/20, so multiply whatever number that's 5% of the total by 20 to get the total.
4 x 20 = 80.
There are 80 marbles total.
Hope this helps!
8 0
4 years ago
Read 2 more answers
Martina is 3 inches less than twice as tall as her little brother. Write an expression for Martina's height. How tall is Martian
Lyrx [107]

Answer:

Martina is 53 inches tall.

Step-by-step explanation:

In order to write an expression that relates the siblings heights we need to attribute variables to each brother. First we will call Martina's height as "m", then we can call her little brother's height as "b". The problem states that Martina's height is 3 inches less than twice the height of her brother so we have:

m = 2*b - 3

Then the problem gives us the height of her brother that is 28 inches tall, so b = 28. We can now compute Martina's height:

m = 2*28 - 3 = 56 - 3 = 53 inches.

4 0
3 years ago
This one is confusing (slope)
Komok [63]

The answer is positive 1/5. Here is a tip, when reading a graph read from left to right. If it is going up to the right it is positive. If it goes down going to the right it is negative. Also think rise/run. Count how many times it goes up(or down) then count how long the line goes.

5 0
3 years ago
Use the data in the table to write a multiplication story for the number fact. Solve 2x6=
Afina-wow [57]
6*2=12.
You have not included a table so I assume this is the answer you want.
4 0
3 years ago
What is the answer for. 2&amp;1/2-1&amp;1/2
kirza4 [7]
2 and 1/2 - 1 and 1/2
since both equations have 1/2, 1/2 - 1/2 automatically is 0
then youll need to subtract 1 from 2 which is 1
Answer- 1
3 0
3 years ago
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