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3 years ago

Help PLEASE I don't get this giving many points

Mathematics

1 answer:

Tom [10]3 years ago

7 0

Answer:

x=20

Step-by-step explanation:

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The perimeter of a rectangle is 42 cm and the area is 80 cm². Write an equation to model the situation and find the dimensions o

mafiozo [28]

Answer:

16cm by 5cm

Step-by-step explanation:

P=2(l+w)

A= wl

80 factorization: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80.

you then would have to find 2 numbers that would add up to make 42.

When you try 16*2+5*2= 32+10= 42 cm as your perimeter.

16*5= 80 cm^2 as your area.

7 0

3 years ago

HELPPPP PLEASEEEEEEEREEREEEE

Maksim231197 [3]

Answer:

the correct answer is b :)))))!!!

7 0

3 years ago

Please help. Will give Brainly!! 15 points!!!!

Elena-2011 [213]

Answer:

Please make it a bit bigger.

Step-by-step explanation:

I can't see it

3 0

3 years ago

Read 2 more answers

14/16

Alla [95]

Answer:

2x + 3y > 100

x + y = 40

Step-by-step explanation:

This is the answer because it shows the price of each and the combined products equaling more than 100 dollars, and the bottom one shows that the combined total of jewelry can not exceed 40 pieces.

5 0

2 years ago

A lab technician shows up to the lab at 9am on Monday and finds a culture of bacteria x containing 5328 bacteria. Each culture s

zubka84 [21]

Answer:

9 pm on a Sunday, 55 .5 days before

Step-by-step explanation:

if there were 6 bacteria initially and from the growth rate we noticed that it doubled every 3 hours

because by 9 am Monday morning there were 5328 bacteria and then by 12 noon (3 hours later), there were 10, 656 bacteria

what we need to know is how long did it take 6 bacteria to become 5328

if 6 bacteria = 1 hour

12 bacteria = 3 hours

24 bacteria = 6 hours

then

5328 bacteria = x hours

taking the ratio

$\frac{5328}{24} =\frac{x}{6}\\ \\222=\frac{x}{6} \\\\\\222(6) = x\\\\1332=x$

we need to now convert this into hours

so we divide by 24

$\frac{1332}{24} =55.5$

9 am 55.5 days before should fall on a Sunday

4 0

3 years ago