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Aleonysh [2.5K]
3 years ago
8

Please help, it would mean the world

Mathematics
1 answer:
natita [175]3 years ago
5 0
1. 12x+ 21
2.88x-33
3.-15x+(-10)
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Solid A is dilated using a scale factor of 2⁄5, resulting in Solid B. Solid B is also dilated using a scale factor of 2⁄5, resul
Lyrx [107]

Answer:

28.8 and 180

Step-by-step explanation:

you just times B by 2/5 to get C and divide it by 2/5 to get A

C = (72)(2/5) = 28.8 km³

A = (72)/(2/5) = 180 km³

We know the answers make sense because A shrinks to get B and B shrinks to get C, and our answers match that.

6 0
2 years ago
2x – 5 = 7 to 2x = 12 What property of equality was used?
kakasveta [241]

Property of Addition and division.

6 0
3 years ago
Please Help!<br> Factor the following trinomial<br> <img src="https://tex.z-dn.net/?f=9x%5E2-24x%2B16" id="TexFormula1" title="9
AlexFokin [52]

\huge\colorbox{pink}{Hey \: panda!}

The answer=>

For this,we need to know what's Middle splitting method

  • In order to factorize x² + bx + c we have to find numbers p and q such that p + q = b and pq = c. After finding p and q, we split the middle term in the quadratic as <em><u>px + qx and</u></em> get desired factors by grouping the terms.

Step-by-step explanation:

9x {}^{2}  - 24x + 16 \\  =  > 9x {}^{2}  - 12x - 12x + 16 \\  =  > 3x(3x - 4) - 4(3x - 4) \\  =  > (3x - 4)(3x - 4) \\ so... \\ x = eitherway \: 4

i.e

Alpha= Beta = 4

5 0
3 years ago
Read 2 more answers
F(x)=square root 5x+7, g(x)= square root 5x-7 Find (f+g)(x)
o-na [289]

Answer: sqrt of 5x+7+ sqrt of 5x-7

Step-by-step explanation:

5 0
3 years ago
Lucy rolls 2 fair dice and adds the results from each. Work out the probability of getting a total that is a multiple of 5
Sergio039 [100]

Answer:

(1,4) ( 4,1)  (2,3) (3,2)

Step-by-step explanation:

Multiples of 5  =  5  and 10

Ways to roll a 5  =  (1,4) ( 4,1)  (2,3) (3,2)

Ways to roll  a 10   =  (5,5) (4,6) (6,4)

We have  7  possible outcomes for a multiple of 5...and there are   36  possible outcomes in total

So  P (multiple of 5)    = 7 / 36

7 0
3 years ago
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