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2 years ago

Please help me I really need this

Mathematics

1 answer:

pshichka [43]2 years ago

7 0

Answer:

Step-by-step explanation:

Draw a horizontal line at the end of the 8 meter horizontal line.

Find the area of the horizontal rectangle

L = 8 + 3

W = 2

Area = L*w

Area = 11*2

area = 22 m^2

Now do the vertical rectangle

L = 8

w = 3

Area = L*w

Area = 8 * 3

Area = 24 m^2

Total Area = 24 + 22 = 46 m^2

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Please solve the combination of equations here.

klemol [59]

Answer:

$\left \{ {{x=5} \atop {y=7}} \right.$

Step-by-step explanation:

$\left \{ {{x+y=12} \atop {3y = 4x+1}} \right.$

$\left \{ {{x=12-y} \atop {3y=4x+1}} \right.$

We are going to do a replacement of x for a second equation

So instead

$3y=4x+1$

in the place of x we are putting 12-y from the first equation, so

$3y = 4(12-y)+1$

To leave the brackets we need to do multiplication

$3y = 4*12-4*y+1$

Which is

$3y = 48-4y+1$

$3y = -4y+49 /+4y\\7y = 49 /:7\\y = 7$

How to determine x? From the first equation:

If the x +y = 12 then the x = 12-y so x = 12-7 = 5

We should write solution as a pair:

$\left \{ {{x=5} \atop {y=7}} \right.$

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3 years ago

Twenty students participated in a psychology experiment which measured their heart rates in two different situations.

Stella [2.4K]

Answer:

thats facts bro

Step-by-step explanation:

thats facts

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3 years ago

How do you write x is less than 4 in symbols

lora16 [44]

Answer:

x <u><</u> 4 or 4 <u>-</u> x

Step-by-step explanation:

Hope I helped please give me the brailiest if you dont mind :)

Please and thank you :)

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3 years ago

Jillian's puppy weighed 16 pounds at the age of 2 months. It weighed 60 pounds at the age of 8 months. What is the percent chang

mel-nik [20]

Answer:the percent change in the puppy's weight= 275%

Step-by-step explanation:

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3 years ago

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Anestetic [448]

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3 years ago