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mezya [45]
3 years ago
5

In 15 years lisa will be four times as old as she is now. how old is she now

Mathematics
1 answer:
Eva8 [605]3 years ago
5 0

Answer:

Lisa is 5 years old

Step-by-step explanation:

we can make an equation like

4x=15+x

X can represent Lisa’s current age

Now just solve for X

3x=15

x=5

And we can check

If Lisa is 5 years old now

In 15 years she would be 20

And 20 is 4 times as 5 which Is her current age

So Lisa is 5 years old now.

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Dan painted 3/4 of a wall using 1/4 of a can of paint.Select all statements that are true.
Juli2301 [7.4K]

Answer:

  B, C, F

Step-by-step explanation:

3/4 is 3 times 1/4, so the number of walls Dan can paint is 3 times the number of cans Dan uses.

A. 1/2 can will paint 3/2 walls, not 2.

B. 1 can will paint 3 walls — true

C. 5/3 cans will paint 5 walls — true

D. 2 cans will paint 6 walls, not 8.

E. 5/2 cans will paint 15/2 = 7 1/2 walls, not 10.

F. 11/3 cans will paint 11 walls — true

5 0
3 years ago
The school board administered a reading test to all eighth-grade students at High Achievers Charter School and determined that 1
marusya05 [52]

Answer:

a

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Step-by-step explanation:

6 0
3 years ago
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Evaluate.<br> (x + 4). 2 - x for x = 6<br> 54<br> 74<br> 0<br> 14
Scrat [10]

Answer: 74

Step-by-step explanation:

Substitute x=6 into the expression

(x+4) . 2^3 -6

Add the numbers

(6+4) . 2^3- 6

10 x 2^3 -6

Evaluate the power

10 x 2^3 -6

10 x 8-6

Multiply the numbers

10 x 8-6

80-6

Subtract the numbers

80-6

74

3 0
4 years ago
Helpp me please
FrozenT [24]

Answer:

  • 18) b, 19) c, 20) c

Step-by-step explanation:

<h3>#18</h3>

Conditional statement p → q, and its inverse is not p → not q.

Applied to the given statement we see the correct one is b.

<h3>#19</h3>

Let the cost of fish is f.

<u>As per question we have:</u>

  • 2(250) + 3f < 700
  • 500 + 3f < 700
  • 3f < 200
  • f < 200/3 ≈ 67

The maximum cost is 66 pesos.

Correct choice is c.

<h3>#20</h3>

<u>Given function:</u>

  • y = √3 - s

The range is all real numbers as no restrictions to its domain.

Correct choice is c.

7 0
3 years ago
Please help me with this ​
Zina [86]

Answer:

1.Triangle is heavier than a square.

2.Circle is lighter than the triangle and square.

3.3 squares won't be balanced between one triangle.

Step-by-step explanation:

Imagine Triangle is 10 and Square is 3

Triangle is heavier.

Imagine Circle is 1

3+3+3=9 also 3 squares

3 squares + 1 circle = 10

as one circle equals 1.

3 0
3 years ago
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