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shusha [124]
3 years ago
9

Sally is now 10 years older than Suki. 5 years ago, the sum of their age was 40. How old are they now?​

Mathematics
2 answers:
Nikitich [7]3 years ago
7 0

Answer:

Sally is 30 and Suki is 20

Step-by-step explanation:

x = Sally's age

y = Suki's age

x = 10 + y

(x - 5) + (y - 5) = 40

x = 30, y = 20

Travka [436]3 years ago
4 0
Sally is 45 and suki is 35
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help me answer these questions please for e , b and d please I know that a is 32 and I think c is 20 I think​
Akimi4 [234]

What text book do you have?

5 0
3 years ago
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Solve for yyy. a(n+y) = 10y+32a(n+y)=10y+32a
Afina-wow [57]
To solve for y, you need to separate it in one side and the other terms in the other side..... as follows:

<span>a(n+y)=10y+32a
an + ay = 10y + 32a

an - an + ay = 10y + 32a - an

ay = 10y + 32a - an

ay -10y = 32a - an

y (a-10) = (32 - n)a

y = {a(32-n)} / (a-10)


</span>
3 0
3 years ago
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Find all solutions to the equation (x² + 5x + 6)(x² − 3x − 4) = 0.
Soloha48 [4]

Answer:

The solutions are:

x=-2,\:x=-3,\:x=-1,\:x=4

Step-by-step explanation:

To find the solutions to the equation \left(x^2+5x+6\right)\left(x^2-3x-4\right)=0 you need to:

  • Factor \left(x^2+5x+6\right)

Break the expression into groups

x^2+5x+6=\left(x^2+2x\right)+\left(3x+6\right)

Factor out x from (x^2+2x)

x^2+2x=x\left(x+2\right)

Factor out 3 from 3x+6

3x+6=3\left(x+2\right)

x^2+5x+6=x\left(x+2\right)+3\left(x+2\right)\\\\\mathrm{Factor\:out\:common\:term\:}x+2\\\\x^2+5x+6=\left(x+2\right)\left(x+3\right)

  • Factor \left(x^2-3x-4\right)

x^2-3x-4=\left(x^2+x\right)+\left(-4x-4\right)\\\\x^2-3x-4=x\left(x+1\right)-4\left(x+1\right)\\\\x^2-3x-4=\left(x+1\right)\left(x-4\right)

Therefore

\left(x^2+5x+6\right)\left(x^2-3x-4\right)=\left(x+2\right)\left(x+3\right)\left(x+1\right)\left(x-4\right)=0

Using the Zero Factor Theorem:

5 0
4 years ago
55 is 40% of what number?<br> a. 137.5<br> b. 110<br> c. 72.7<br> d. 13.8
Nonamiya [84]

Answer:

Answer Is A

Step-by-step explanation:

Just trust me

5 0
3 years ago
What is the distance between (–2 and one-half, –3) and (1, –3)?
seropon [69]

The answer is square root of 2

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3 years ago
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