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3 years ago

I really need help plz thank you and can you explain for me to understand

Mathematics

1 answer:

ycow [4]3 years ago

4 0

First one n is less than or equal to 7

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Sam is practicing long track speed skating at an skating ring. The distance around the rink is 250 yards . He skated around thr

pentagon [3]

3 miles = 5,280 yards

6(250) = 1,500 yards

5,280 - 1,500 = 3,780 yards

4 0

2 years ago

Madelynn makes the following statement: "Since I have 28 people that I defi-

slava [35]

Answer:

The only problem was that now it costs more so not really

Step-by-step explanation:

I think its an opinion question

8 0

2 years ago

Tim looks up at the top of a tree at an angle of elevation of 40 degrees. If heis 5 ft tall and 10 ft from the tree, how tall is

dolphi86 [110]

<h2>Answer:</h2>

13.391 ft

<h2>Explanations:</h2>

The schematic diagram of the given question is shown below;

The height of the tree is expressed as:

H = h +5

Determine the value of h using the SOH CAH TOA identity

$\begin{gathered} tan\theta=\frac{opposite}{adjacent} \\ tan40^0=\frac{h}{10} \\ h=10tan40 \\ h=10(0.8391) \\ h=8.391ft \\ \end{gathered}$

Determine the height of the tree

$\begin{gathered} H=h+5 \\ H=8.391+5 \\ H=13.391ft \end{gathered}$

Hence the height of the tree is 13.391ft

3 0

5 months ago

Which decimal is closest in value to 9/20

yan [13]

Answer:

0.45

Step-by-step explanation:

9/20 is the same as 0.45

7 0

2 years ago

Read 2 more answers

Steel rods are manufactured with a mean length of 29 centimeter (cm). Because of variability in the manufacturing process, the l

zavuch27 [327]

Solution :

Given data :

The mean length of the steel rod = 29 centimeter (cm)

The standard deviation of a normally distributed lengths of rods = 0.07 centimeter (cm)

a). We are required to find the proportion of rod that have a length of less than 28.9 centimeter (cm).

Therefore, P(x < 28.9) = P(z < (28.9-29) / 0.07)

= P(z < -1.42)

= 0.0778

b). Any rods which is shorter than $24.84$ cm or longer than $25.16$ cm that re discarded.

Therefore,

P (x < 24.84 or 25.16 < x) = P( -59.42 < z or -54.85)

= 1.052

4 0

2 years ago