3 years ago

sarithas age is 3 times her sons age. ten years ago he was five times her sons age. find thier present age

Mathematics

1 answer:

Hunter-Best [27]3 years ago

8 0

Answer:

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Step-by-step explanation:

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Plese help me fast I will mark you brainlist

spayn [35]

$\\ \sf\longmapsto 5x+5+4x-5=180$

$\\ \sf\longmapsto 5x+4x+5-5=180$

$\\ \sf\longmapsto 9x=180$

$\\ \sf\longmapsto x=\dfrac{180}{9}$

$\\ \sf\longmapsto x=20$

y=x=20
z=5x+5=5(20)+5=100+5=105

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3 years ago

So in this equation x + 2y= -8<br> would the slope be 1 ?

Slav-nsk [51]

X + 2y = -8

Subtract 'x' to both sides:

2y = -x - 8

DIvide 2 to both sides:

y = -1/2x - 4

Slope is -1/2, not 1.

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docker41 [41]

Answer:

21, 9

Step-by-step explanation:

If girls are x, then boys are x + 12

x + x + 12 = 30

2x + 12 = 30

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2 years ago

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Answer:

216 spent on cakes

Step-by-step explanation:

12 times 18= 216

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