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Dafna1 [17]
3 years ago
8

Sarah is three times older than she was 10 years ago. At that time Sarah's mother was 20 years older than Sarah. How old is her

mother now?
Mathematics
1 answer:
Kryger [21]3 years ago
3 0

Answer:

Her mother is 35 years

Step-by-step explanation:

Let her present age be x

10 years ago the age will be x-10

From the question;

x = 3(x-10) ••••(i)

Her mother’s age at that time is (x-10+20) = x + 10

so we want her mother’ s age now

from equation i

x = 3x - 30

3x - x = 30

2x = 30

x = 30/2

x = 15

her mother’s age then is 15 + 10 = 25

Her age now will be 25 + 10 = 35 years

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Lynette buys candy at the grocery store. she gives half of the pieces to her son and 2 pieces to her daughter. if she has 4 piec
nevsk [136]

Let Lynette has originally candies in hand = x

She gave half to her son means x/2 given to son.

2 candies gave to daughter and left with 4.

x - x/2 - 2 = 4

adding 2 both sides

x - x/2 - 2 + 2 = 4 + 2

x - x/2 = 6

x /2 = 6

x = 12

Means she have 12 candies originally : Answer

Hope it will help :)

5 0
3 years ago
The question is in the pic please be specific
vichka [17]
Box 1) (LxW) 20x6=120
box 2) (LxW) 15x4=60
box 1 cost) (size of box x price of box) 120x1.25=150
box 2 cost) (size of box x price of box) 60x1.25=75
subtract 150 and 75 to get 75

answer: the company is saving $75 by choosing to make 50 of box 2 instead of 50 of box 1

hope this makes sense comment if you need more explanation
8 0
3 years ago
When a transversal is perpendicular to two parallel lines, all the angles formed measure 90°. Explain why.
kotykmax [81]
When two parallel lines are cut by a transversal, due to the natures of the different relationships among the angles, all of them will be either equal to the measure of the first angle or equal to that angle subtracted from 180.  If the transversal is perpendicular to the parallel lines, forms a right angle, then both the angle given and the angle subtracted from 180 will be 90.  This means all of the angles will be 90.
5 0
4 years ago
Draw the polygon with the given vertices in a coordinate plane.(2,2),(3,712),(8,712),(10,4),(7,0)
Ne4ueva [31]

Answer:

can u give us an online platform to draw it

Step-by-step explanation:

3 0
3 years ago
2 ft
sdas [7]

Answer:

88/7 ft = 12.6 ft (nearest tenth)

Step-by-step explanation:

Circumference of a circle = 2\pir

<u>Radius of inner circle</u>

Given:

  • circumference of inner circle = 22ft
  • \pi = 22/7

⇒ 22 = 2 x (22/7) x r

⇒ r = 3.5

So the radius of the inner circle is 3.5 ft

<u>Radius of outer circle</u>

If the distance between the inner circle and the outer circle is 2 ft, then the radius of the outer circle = 3.5 + 2 = 5.5

<u>Circumference of outer circle</u>

Therefore, circumference of outer circle:

=  2 x (22/7) x 5.5

= 242/7 ft

<u>Difference between circumferences</u>

Difference = outer circle circumference - inner circle circumference

                  = 242/7 - 22

                  = 88/7 ft

                  = 12.6 ft (nearest tenth)

4 0
2 years ago
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