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3 years ago

Look at the angle. Which description is true?

Mathematics

2 answers:

gladu [14]3 years ago

7 0

Answer:

less than 90 degrees

Step-by-step explanation:

tbh the other

deff fn [24]3 years ago

3 0

Answer:

Less than 90 degrees

Step-by-step explanation:If it were equal to 90 degrees it could make a perfect square as the angle and if its more it would be open wide i guess im a bad explainer sorry

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2. A guy wire for a tree is 20 ft. long, making a 21o angle with the ground. How far is the base of the tree from a stake anchor

Alenkasestr [34]

Answer:

the base of the tree from a stake anchoring the wire is 18.7 ft long

Step-by-step explanation:

A guy wire for a tree is 20 ft. long, making a 21 degree angle with the ground.

It forms a right angle triangle. the hypotenuse of the triangle is 20 ft

The adjacent side of the given angle 21 degree is the base of the tree from a stake

Let x be the base length

$cos(theta)=\frac{adjacent}{hypotenuse}$

$cos(21)=\frac{x}{20}$

$20cos(21)=x$

$x=18.7$

the base of the tree from a stake anchoring the wire is 18.7 ft long

3 0

4 years ago

In politics, marketing, etc. We often want to estimate a percentage or proportion p. One calculation in statistical polling is t

inessss [21]

Answer: |p-72% |≤ 4%

Step-by-step explanation:

Let p be the population proportion.

The absolute inequality about p using an absolute value inequality.:

$|p-\hat{p}| \leq E$ , where E = margin of error, $\hat{p}$ = sample proportion

Given: A poll result of 72% with a margin of error of 4% indicates that p is most likely to be between 68% and 76% .

|p-72% |≤ 4%

⇒ 72% - 4% ≤ p ≤ 72% +4%

⇒ 68% ≤ p ≤ 76%.

i.e. p is most likely to be between 68% and 76% (.

6 0

3 years ago

First in your notebook, draw a right angle, then draw a bisector of the right angle. Label all parts. Looking at the right angle

crimeas [40]

Two acute angles are formed by the bisector, 45 degrees each.

6 0

3 years ago

Read 2 more answers

Two fifths of the girls in school signed up to play softball. An equal number of girls signed up to play pitcher, infield and ou

podryga [215]

The fraction of the girls signed up to play outfield is $\frac{2}{15}$

<em><u>Solution:</u></em>

Given that Two fifths of the girls in school signed up to play softball

An equal number of girls signed up to play pitcher, infield and outfield

So there are 3 equal groups formed from two fifth

This means that we could divide the 2/5 initial group into 3 equal smaller groups for each play pitcher, infield and outfield

Therefore, fraction of the girls signed up to play outfield is found by dividing $\frac{2}{5}$ by 3

$\text{ Fraction of girls play outfield } = \frac{\frac{2}{5}}{3}\\\\\text{ Fraction of girls play outfield } = \frac{2}{5} \times \frac{1}{3}\\\\\text{ Fraction of girls play outfield } = \frac{2}{15}$