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MrRa [10]
3 years ago
9

Please help me!!!!!​

Mathematics
2 answers:
Evgesh-ka [11]3 years ago
3 0

Answer:

The answer is A.

Step-by-step explanation:

The ratio is 1 second/2 centimeters, but since they're asking for a unit ratio, you need to divide the top and bottom by 2 which gives you a unit ratio of ½ second/1 centimeter.

Ierofanga [76]3 years ago
3 0

Answer:

Perhaps, B or A

Step-by-step explanation:

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If a car factory checks 320 cars and 12 of them have defects, how many out of 560 will have defects? Use proportions
Viefleur [7K]

Answer:

Total number number of cars which do not have defects = 539

and 21 are defected out of 560 i.e. 560 - 539 = 21

Step-by-step explanation:

Total cars checked by Car factory = 320

Number of defected cars = 12

The number of cars which do not have defects = 320 - 12 = 308

Total Number of cars = 560

So the equation becomes

\left[560\:\times \:308\right]\:\div \:320

⇒  \frac{560\times \:308}{320}

\mathrm{Multiply\:the\:numbers:}\:560\times \:308=172480

⇒  \frac{172480}{320}

\mathrm{Divide\:the\:numbers:}\:\frac{172480}{320}=539

⇒  539

Therefore, total number number of cars which do not have defects = 539

and 21 are defected out of 560 i.e. 560 - 539 = 21

4 0
3 years ago
Using special products what is (wx-y)^2
VikaD [51]
I think that supposed to be (wx - y^2)^2?

If so, multiply using FOIL:

First: wx * wx = w^2x^2

Outside: wx * -y^2 = -wxy^2

Inside: -y * wx = -wxy^2

Last: -y^2 * -y^2 = y^4

Combine w^2x^2 - 2wxy^2 + y^4
4 0
4 years ago
Essica and her sister, Nicole, need money for lunch. Jessica receives $50 and buys lunches at the high school for $2.50 each and
astraxan [27]
I’m not sure about the answer, but my name is Jessica ✌
3 0
3 years ago
Read 2 more answers
What is number 7?? Plz answer
lara31 [8.8K]
Area of rectangle = length * width

A = (2 2/9 yd) * (3 2/5 yd)

Convert both mixed numerals into fractions.

A = (20/9 yd) * (17/5 yd)

A = (20 * 17)/(9 * 5) yd^2

A = (4 * 17)/(9) yd^2

A = 68/9 yd^2

A = 7 5/9 yd^2
5 0
3 years ago
Oh lord pls help asap
zepelin [54]

Answer:

1.1(for infinity) or 0.9

Step-by-step explanation:

it depends if you do 90/100 or 100/90

90/100 = 0.9

100/90 = 1.1(for infinity)

so sorry i couldn't figure out specifically what to divide but i hope both of these answers helped you!

4 0
3 years ago
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