3 years ago

The length of a guy wire supporting a cell tower is 120 meters. The guy wire is

Mathematics

1 answer:

almond37 [142]3 years ago

6 0

Answer: 140

Step-by-step explanation:

n calculate

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On a scale drawing, the scale is 1/2 inch = 1 foot. What are the dimentions on the scale drawing of a room that is 22 feet by 17

Finger [1]

It would be 44 inch by 34 inch

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3 years ago

It is known that:the pair of variables x=5, y=7 is the solution to the equation ax–2y=1. Find the coefficient a.

kicyunya [14]

Answer:

a = 3

Step-by-step explanation:

Fill in the given values:

a*5-2*7 = 1 =>

5a = 1 + 14

a = 15/5 = 3

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3 years ago

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A $220 suit is marked down by 30%. Find the sale price.

Ira Lisetskai [31]

Just do 220 times 0.30

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3 years ago

. Use the statistical features of your calculator to find the mean and the standard deviation to the nearest tenth of a data set

uysha [10]

Answer:

Mean = 1.9

Standard deviation = 0.6

Step-by-step explanation:

The Mean is calculate by the formula:

$Mean = \frac{\text{Sum of all the observation}}{\text{Total number of observation}}$

⇒ $Mean = \frac{24.9+24.7+24.7+23.4+27.9}{5} = 1.85$

Thus Mean to the nearest tenth is 1.9

Standard Deviation is the square root of sum of square of the distance of observation from the mean.

$Standard deviation(\sigma) = \sqrt{\frac{1}{n}\sum_{i=1}^{n}{(x_{i}-\bar{x})^{2}} }$

where, $\bar{x}$ is mean of the distribution.

Putting all values in the formula, We get

Standard Deviation = 0.597 ≈ 0.6

6 0

3 years ago

HELP ME!! I WILL GIVE BRAINLIEST!!! Express your answer in SCIENTIFIC NOTATION. 9.3 × 10⁷ - 3.4 × 10⁶ = __________ plz help!!

DanielleElmas [232]

Answer:

9.3 × 10⁷ - 3.4 × 10⁶ = 89 600 000

Which is 8.96*10^7 in scientific notation

Hope this helps you

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3 years ago