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Komok [63]
3 years ago
8

The sum of the ages of a woman and her daughter is 90 years. three years ago the mother was 2 times as old as her daughter. how

old is each one now?
plz answer asap

Mathematics
1 answer:
Temka [501]3 years ago
7 0
The mother will be 60 years old , while the daughter is 30 Years old.
I showed by work below , good luck!

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Please help. Will mark Brainliest
mario62 [17]
First is B, since 1 and 3 are corresponding angles, they must be equal

Next is I, 3 and 5 must be equal since they are vertically opposite

Last is transitive property
Since 1 = 3 and 3 = 5, then 1 must equal 5
7 0
3 years ago
What are the solutions to the system of equations?
svet-max [94.6K]

Answer:the third option is correct

Step-by-step explanation:

The system of equations are

y = 2x^2 - 5x - 7 - - - - - - - - - - -1

y = 2x + 2 - - - - - - - - - - - - - 2

We would equate equation 1 and equation 2. It becomes

2x^2 - 5x - 7 = 2x + 2

2x^2 - 5x - 2x - 7 - 2 = 0

2x^2 - 7x - 9 = 0

We would find two numbers such that their sum or difference is -7x and their product is - 18x^2. The two numbers are 2x and - 9x. Therefore

2x^2 + 2x - 9x - 9 = 0

2x(x + 1) - 9(x + 1) = 0

2x - 9 = 0 or x + 1 = 0

2x = 9 or x = - 1

x = 9/2 = 4.5

Substituting x = 4.5 or x = -1 into equation 2, it becomes

y = 2 × 4.5 + 2 or y = 2 × - 1 + 2

y = 11 or y = 0

Therefore, the solutions are

(4.5, 11) (- 1, 0)

6 0
4 years ago
Room A has an area of 172 square feet and Room B has an area of 227 square feet. Both of the rooms are square in shape. Which ra
Alex

Answer:12:13

Step-by-step explanation:

it all comes down to one thing that is very good guessing and i so happen to have guess it right you welcome

3 0
3 years ago
Find x if y =(x - 4) - 25 and y=0​
shusha [124]
1 switch sides
(x-4)=0
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x-4+4 = 0+4
simplify
x = 4
7 0
3 years ago
What is the value of D to the nearest tenth ?
Naily [24]
<span> If two secants intersect from a point outside of the circle, then you can use formula:

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676 + 26d = 22 * 62
26d = 1364 - 676
26d = 688
d = 688/26
d = 26.5   </span>←  to the nearest tenth
8 0
3 years ago
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