Answer:
x=-5
Step-by-step explanation:
opening the bracket on the LHS, we have
-8x-40= -3x+x-7-3
-8x-40= -2x-10
collecting like terms
-8x+2x= -10+40
-6x= 30
divide both sides by -6
x= -5
Answer:
Alice
Step-by-step explanation:
5 feet is approximately 1.5 meters so we can say Alice is taller than Mary by 10cm
Twice a number (2x) decreased by 7 (- 7).
2x - 7
Two times a specfic number (x) subtracted by 7.
<u><em>Answer:</em></u>
One kilometer is
miles
<u><em>Explanation:</em></u>
<u>To convert a decimal to a fraction:</u>
1- Write the decimal as a fraction whose denominator is 1
2- Multiply both numerator and denominator by multiples of 10 to eliminate the decimal point
3- Simplify the fraction you have
<u>Now, for the given problem:</u>
<u>The given decimal is 0.62, following the above steps:</u>
<u>Step 1: </u>

<u>Step 2:</u>
We have two digits after the decimal point, so to eliminate the decimal point, we will multiply the numerator and the denominator by 100

<u>Step 3:</u>
We can note that, in the fraction obtained from step 2, both the numerator and the denominator are divisible by 2, so we simplify as follows:

Hope this helps :)
Answer:
6.6
Step-by-step explanation: