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Jlenok [28]
3 years ago
14

I don't get this please help me! it's only 8th grade math. thanks!(:

Mathematics
1 answer:
solmaris [256]3 years ago
8 0
The time × 1.5=the distance
so 5×1.5=7.5
10×1.5=15
20×1.5=30
im a 7th grader doing 8th grade math.. just think
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Why can't the product of two digit numbers ever be two digits
amm1812
Im pretty sure it can. 20 +20 = 40. if that helps...
7 0
3 years ago
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(7x18+45) divided by 3x2
satela [25.4K]

Answer:

114

Step-by-step explanation:

hope this helps!

5 0
3 years ago
Please help me now ! Thank you
jarptica [38.1K]
First we'll do two basic steps. Step 1 is to subtract 18 from both sides. After that, divide both sides by 2 to get x^2 all by itself. Let's do those two steps now

2x^2+18 = 10
2x^2+18-18 = 10-18 <<--- step 1
2x^2 = -8
(2x^2)/2 = -8/2 <<--- step 2
x^2 = -4

At this point, it should be fairly clear there are no solutions. How can we tell? By remembering that x^2 is never negative as long as x is real. 

Using the rule that negative times negative is a positive value, it is impossible to square a real numbered value and get a negative result. 

For example
2^2 = 2*2 = 4
8^2 = 8*8 = 64
(-10)^2 = (-10)*(-10) = 100
(-14)^2 = (-14)*(-14) = 196

No matter what value we pick, the result is positive. The only exception is that 0^2 = 0 is neither positive nor negative.

So x^2 = -4 has no real solutions. Taking the square root of both sides leads to

x^2 = -4
sqrt(x^2) = sqrt(-4)
|x| = sqrt(4)*sqrt(-1)
|x| = 2*i
x = 2i or x = -2i
which are complex non-real values


5 0
3 years ago
Find the sale price. The original price of a remote control car is $70. The car is on sale for 20% off.
Mrac [35]
$56
Explanation:
70(20%)=14
70-14=56
3 0
2 years ago
Read 2 more answers
Solve the equation 2/3x=-1/2x+5 what is the first step to isolate the variable term on one side of the equation
Komok [63]

Answer:

x= 30/7

Step-by-step explanation:

See image below:)

4 0
2 years ago
Read 2 more answers
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