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3 years ago

Hey I need help fast

Mathematics

2 answers:

Reika [66]3 years ago

8 0

Answer:

60ft^2

Step-by-step explanation:

Split the area into two large triangles, the right and the left.

The base for the triangle is 10ft+20ft =30ft and we know the height is 2.

Since A=bh*1/2, A = 30*2*1/2. This equals 30. since there are two of these large triangles and they are equal, just multiply the area by 30.

atroni [7]3 years ago

7 0

Answer:

Step-by-step explanation:

10×2=20÷2=10×2=20 goes for the two top ones

20×2=40÷2=20×2=40 goes for the two bottom ones

40+20=60 is the answer

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Marking Brainly!!! Please help Kigar Wood Shop used 18,400 kilowatt hours of electricity with a peak

ankoles [38]

Answer:

2 x 32 = 64 watts x 5 hours per day estimate usage = 320 watts. Multiplied by 365 days in a year = 116,800 watts, divided by 1000 (1000 watts is 1 kilowatt hour) = 116.80 kWh.

Step-by-step explanation:

7 0

3 years ago

A student cuts pieces of ribbon to decorate a banner the first piece of ribbon is 24 inches long. The next piece of ribbon is on

kumpel [21]

Answer:

Option D) 47.25 in

Step-by-step explanation:

we know that

The equation of a exponential decay function is equal to

$y=a(1-r)^x$

where

y is the total length

x is the number of pieces of ribbon

a is the initial value

r is the rate of change

we have

$a=24\ in\\r=50\%=50/100=0.50$

substitute

$y=24(1-0.50)^x$

$y=24(0.50)^x$

we have that

For x=0 -----> $y=24\ in$

For x=1 ----> $y=24(0.50)^1=12\ in$

For x=2 ----> $y=24(0.50)^2=6\ in$

For x=3 ----> $y=24(0.50)^3=3\ in$

For x=4 ----> $y=24(0.50)^4=1.5\ in$

For x=5 ----> $y=24(0.50)^5=0.75\ in$

Adds the length of the first 6 pieces of ribbon

$24+12+6+3+1.5+0.75=47.25\ in$

7 0

3 years ago

Does anyone want free points????

Tasya [4]

Sure thank you for asking

5 0

3 years ago

Read 2 more answers

The length of human pregnancies from conception to birth varies according to a distribution that is approximately Normal with me

eimsori [14]

Answer:

5.21-th

Step-by-step explanation:

Mean pregnancy time (μ) = 266 days

Standard deviation (σ) = 16 days

The z-score, for any given pregnancy period 'X' is determined by:

$z=\frac{X-\mu}{\sigma}$

For X = 240 days:

$z=\frac{240-266}{16}\\ z=-1.625$

According to a z-score table, a score of -1.625 is equivalent to the 5.21-th percentile of a normal distribution

4 0

3 years ago

Select the graph for the solution of the open sentence. Click until the correct graph appears.

Andreyy89

Answer:

x < 5

x > -3

Step-by-step explanation:

I didn't see the graph you mentioned, but this is the graph I did.

|x - 1| < 4

x-1 < 4 , -(x-1) < 4

x < 5

x > -3

5 0

3 years ago