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worty [1.4K]
3 years ago
8

A number y decreased by 9 is 8 An equation that represents this sentence

Mathematics
1 answer:
Masja [62]3 years ago
8 0

Answer:

Y-9=8

Step-by-step explanation:

Y is decreased by 9 in just say 9 is subtracted by y

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How many square corners does a pentagon have
SIZIF [17.4K]
I assume that by square corners you mean 90 degree angles. if this is the case then there are 2 in a pentagon. Hope I helped :)
3 0
3 years ago
Robert needs to cut four shelves from a board that is 2.5 meters long. The second shelf is 18 cm longer than twice the length of
g100num [7]
STEP 1:
convert meters to centimeters
100 cm= 1 meter

= 100 cm/m * 2.5 m
= 250 cm


STEP 2:
x= length of first shelf
2x+18= length of second shelf
x-12= length of third shelf
x+4= length of fourth shelf

since the whole board has to be used, add lengths of all shelves and set it equal to the whole length of the board (250 cm).

x + (2x+18) + (x-12) + (x+4)= 250 cm
combine like terms
5x + 10= 250
subtract both sides by 10
5x= 240
divide both sides by 5
x= 48


STEP 3:
find length of second shelf
= 2x + 18
= 2(48) + 18
= 114 cm


CHECK:
x + (2x+18) + (x-12) + (x+4)= 250
48 + (2(48)+18) + (48-12) + (48+4)= 250
48 + (96+18) + 36 + 52= 250
48 + 114 + 36 + 52= 250
250= 250


ANSWER: Shelf two is 114 cm.

Hope this helps! :)
8 0
3 years ago
How do i find m(2) ?
Ket [755]

Answer:

plug in 2 for x

Step-by-step explanation:

square root of 10^2 - 2^2

square root of 96

8 0
3 years ago
May can swim one lap in 6.089 seconds, and Sarah can swim one lap in 6.098 seconds. Write an equation to compare their speeds.
Pie

6.098-6.089=.009 maybe?

6 0
3 years ago
Read 2 more answers
How could Brent use a rectangle to model the factors of x2 – 7x + 6?
Katen [24]

Answer:

x2-7 can be the length and 6 can be  the width of it and then that would l give you are l time w

Step-by-step explanation:

6 0
3 years ago
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