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Debora [2.8K]
4 years ago
7

If you could explain and answer I’d appreciate

Mathematics
2 answers:
statuscvo [17]4 years ago
8 0
I think the answer is 10. Normally 5-15 would be -10 but because of the absolute value bracket things (I don’t remember what they’re called) it would be the opposite of the negative number, so I think your answer is 10. I haven’t done these in a while
Cerrena [4.2K]4 years ago
4 0

Answer:

-10

Step-by-step explanation:

5 is lower than 15 so the answer must be negative

if 15 minus 5 is 10

then 5 minus 15 has to be 10

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Molly's dad is five times as old as Molly is. Her dad is also as old as the sum of the ages of Molly and her older twin brothers
Llana [10]

Answer:

30 years old

Step-by-step explanation:

5x = x + 2(12)

5x = x + 24

4x = 24

x = 6

5(x)

5(6) = 30

5 0
2 years ago
What is 2x(4x 2 −8x+7)
mote1985 [20]

Answer:

x =(8-√176)/8=1-1/2√ 11 = -0.658

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Simplify.
erma4kov [3.2K]
(5b^2 - 3b + 2) + (2b - 4) 
Just expand out all the brackets
5b^2 - b - 2
7 0
3 years ago
there are 40 entries in the science fair. How many ways can they finish in first, second, and third place?
Vlad [161]

The first place can be filled in 40 ways.

The second place can be filled in the remaining 39 ways.

The third place can be filled in the remaining 38 ways.

Therefore, the total number of ways in which the forty entries in the science fair can finish in first, second, and third place is given by 40\times 39\times 38=59280.

5 0
4 years ago
Question: The hypotenuse of a right triangle has a length of 14 units and a side that is 9 units long. Which equation can be use
kramer

Answer:

The hypotenuse is the longest side in a triangle.

a^2=b^2+c^2.

14^2=9^2+c^2.

c^2=196-81.

c^2=115.

c=√115.

c=10.72~11cm

5 0
4 years ago
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