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Galina-37 [17]
3 years ago
7

HELP ME! I BEG YOUUUU

Mathematics
1 answer:
timama [110]3 years ago
7 0

Answer:

12

Step-by-step explanation:

Using the pythagorean theorem we have DE^2 + 5^2 = 13^2

DE^2 = 169 - 25 = 144

DE  = sqrt144 = 12

Or, you could just remember the triangle 5-12-13, as it is pretty common, along with 3-4-5, 7-24-25

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Write an expression that represents the following situation: An Uber driver charges $6 plus $1.50 per mile.
LUCKY_DIMON [66]

Answer:

6.50

Step-by-step explanation:

6+1.50=6.50

8 0
3 years ago
If tommy rode his bike 4.3 miles a day, 3 days a week for 5 years delivering news papers and he dropped 22.7 newspapers every 1/
geniusboy [140]

Answer:

277 848 newspapers.

Step-by-step explanation:

Find out how much newspaper he drops for 4.3 miles.

1/4 = 0.25

4.3 miles ÷ 0.25 = 17.2

= 17

17 x 22.7 = 385.9

(Newspapers be dropped a day)

1 week of dropping newspapers = 385.9 x 3 = 1157.7

1 month of dropping newspapers = 1157.7 x 4 =

4630.8

1 year = 12 months

5 years = 12 x 5 = 60 months.

5 years/60 months of dropping newspapers = 4630.8 x 60 = 277 848

Tommy dropped 277 848 newspapers.

6 0
3 years ago
30 POINTS Which is an x-intercept of the graph of the function y=cot(3x)?
Allisa [31]

Answer:

x=\frac{\pi}{6}

Step-by-step explanation:

Choices aren't given, so i will solve this equation and find the first positive x-intercept angle.

First, x-intercept means the x-cutting point of the graph. This occurs when y = 0. So we will solve the equation for x. Shown below:

y=Cot(3x)\\Cot(3x)=0\\ArcCot(Cot(3x))=ArcCot(0)\\3x=ArcCot(0)

Inverse Cotangent (ArcCot) of 0 is at  \frac{\pi}{2}, so we can now solve for x:

3x=ArcCot(0)\\3x=\frac{\pi}{2}\\x=\frac{\pi}{6}

So, the x-intercept is at x = pi/6

6 0
3 years ago
Read 2 more answers
The diameter of a merry-go-round is 63 feet. Each person gets to make 23 rounds per ride. How far does each person ride?
xenn [34]
Calculate the circumference of the circle, and multiply it by 23.

C = pi * d

C = 3.14 * 63 ft =197.82 ft

23 * C = 23 * 197.82 ft = 4549.86 ft
7 0
3 years ago
I need help with this
andrey2020 [161]
18a:16 18b:32 % means out of 100
3 0
3 years ago
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