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23.10.2019 •
Mathematics
2. translate the following equation into a verbal sentence. x + 5 = 2(7 + x)
f the quotient of x and five is two times seven plus x.
g the number x plus five is two times the sum of seven and x.
h the number x plus five is two times seven plus x.
j the product of x and five is the sum of two times seven and x.
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Ответ:
G
Step-by-step explanation:
Some points to note
"is" means equal"times" means multiplication"quotient" means division"sum" is additionNow, let's look at the left side of the equation.
It is "x + 5"
This means the sum of the number x and 5, or the number x plus 5
It eliminates F and J
Now, let's look at right side of equation.
It is "2(7+x)"
"7+x" is in brackets, so this is the sum of 7 and x. Then it is multiplied by 2. Thus, we can say:
"2 times the sum of 7 and x"
From the choices G and H left, we select G to be correct.
Ответ:
87.96 meters to the nearest cm.
Step-by-step explanation:
First find the circumference of the wheel
= 2 π r
= 2 π * 28
= 175.929 cm.
So one revolution is equivalent to travelling 175.929 cm.
50 revolutions = 175.929 * 50
= 8796.46 cm.
= 8796.46 / 100
= 87.96 m (answer).