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IrinaK [193]
3 years ago
12

Equations with

Mathematics
1 answer:
andriy [413]3 years ago
3 0
The anwser is 9
my handwriting is good but if you have any more questions plz lmk

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Susan can mow 1/4 of a yard in 1/5 of an hour.At this rate,how many yards can she mow in one hour? Express answer as a decimal.
schepotkina [342]
Find the unit rate:

1/4 yd       1(5)
---------- = -------- = 5/4 yards, or 1 1/4 yards, in one hour.  This is 1.25 yards.
1/5 hr        4(1)
3 0
3 years ago
What is the value of y in the equation y − 7 = 21? (4 points)
labwork [276]

Answer:

4

Step-by-step explanation:

y-7=21

+7 +7

y=21+7

y=28

8 0
3 years ago
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Using the quadratic formula to solve x2 + 20 = 2x, what are the values of x?
BabaBlast [244]

Answer:

Step-by-step explanation:

x^2+20=2x move 2x to the left

x^2-2x+20=0

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x=1± i√19

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3 years ago
Shen’s mother gave him $10 to go buy groceries. He picked up a gallon of milk for $3.49, three pounds of oranges that cost $1.14
svet-max [94.6K]
Gallon of milk: $3.49
3lbs oranges: $1.14(3) = $3.42
Box of cereal: $3.46

Front end estimation is taking the number in front and the rest of the numbers coming after it will be zeroes.

Using front end estimation:
$3.49 => $3.00
$3.42 => $3.00
$3.46 => $3.00

Add all these up; Shen estimated the total cost of the groceries would be $9.00.
5 0
3 years ago
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