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Ivenika [448]
3 years ago
15

Help me with this math question

Mathematics
1 answer:
aksik [14]3 years ago
7 0

Answer:

Statements A and B are both true.

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Need help with math's home work
Aleonysh [2.5K]
1. The best thing to do is to find out what 1% is. 235/100= 2.35
As you're looking for 27%, you then multiply 2.35*27= 63.45
As you're increasing it, you've then got to add this to the original amount.
235+63.45= 298.45

2. Again, find 1%. 24/100= 0.24
0.24*9= 2.16
24+2.16= 26.16

3. Find 1%. 1120/100= 11.2
As you're looking for 13.5%, you then multiply this by 13.5
11.2*13.5= 151.20
As you're subtracting, you then take this away from the original number.
1120-151.20= 968.80

4. This time, you can find 10%.
0.057/10= 0.0057
0.0057*5.5= 0.03135.
You've then got to subtract this as you're decreasing the number.
0.057-0.03135= 0.02565.

Sally's investment is now worth £585. (Find the 30% and add it on) and Susie's investment is now worth £585 (Find the 10% and subtract). They both have the same amount of money.

Hope this helps :) 
8 0
3 years ago
Which function below is the inverse of f(x) = x2 − 25?
Viktor [21]
f(x)  =  x^{2}  -  25
Let f(x)  =  y
  thus y = x^{2}  -  25
switch the position of y and x in the equation
     x =  y ^{2}  -  25
then solve for y in this case
     x  +  25  =   y^{2} 

∴   y=\sqrt{x  +  25}

Thus, f^{-1} (x)  =   \sqrt{x  +  25}
3 0
3 years ago
Read 2 more answers
PLEASE HELP GIVING BRAINLIEST! :)
QveST [7]

Answer:

10

Step-by-step explanation:

3a+b - 4

Let a =3 and b = 5

3(3) +5 -4

Multiply

9+5-4

Add and subtract

14-4

10

6 0
3 years ago
Read 2 more answers
A double recipe of cookies calls for 5 cups of flour. Which of the following proportions could be used to find the amount of flo
BARSIC [14]
You could divide 5 in half and then add that to the five to find the amount of flour to use in a triple recipe. Hope this helps. 
5 0
3 years ago
Read 2 more answers
Which of the following is an equivalent form of the compound inequality −44 > −2x − 8 ≥ −8?
Serggg [28]
Answer <span>−44 > −2x − 8 ≥ −8 for this is D

</span><span>-2x -8 < - 44 and -2x -8 _> -8</span>
3 0
4 years ago
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