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astra-53 [7]
3 years ago
13

Help me with this please

Mathematics
1 answer:
rosijanka [135]3 years ago
7 0

Answer:

-(√105)/11

Step-by-step explanation:

Tangent is the ratio of sine to cosine. When tangent is positive, sine and cosine have the same sign. This means the appropriate choice will be either the first one or the last one.

cos(θ) = -√(1 - sin(θ)²) . . . . in the 3rd quadrant

... = -√(1 - (-4/11)²)

... = -(1/11)√(121 -16)

... = -(√105)/11 . . . . . . matches the first selection

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A New York Times poll on women's issues interviewed 1025 women randomly selected from the United States, excluding Alaska and Ha
nikitadnepr [17]

Answer: The margin of error tells that the proportion of the a random sample women said they do not get enough time for themselves can be differ by ±3% than the estimated proportion (47%)

Step-by-step explanation:

Given : A New York Times poll found that 47% of the women said they do not get enough time for themselves.

The poll announced a margin of error of ± 3% for 95% confidence in its conclusions.

A margin of error gives that value of percentage error of in results by which any random value will differ from the real population value.

Here the margin of error tells that the proportion of the a random sample women said they do not get enough time for themselves can be differ by ±3% than the estimated proportion (47%).

5 0
3 years ago
Triangle A B C is shown. Side A C has a length of 27. Side C B has a length of 54.
Natali5045456 [20]

The possible length of segment AB is 27 < AB < 81

From the question, we have

In triangle ABC

AC = 27

CB = 54

Using Pythagoras theorem,

AC² = AB² + CB²

54² = AB² + 27²

AB = 47

The possible length of segment AB is 27 < AB < 81

Multiplication:

To determine the sum of two or more numbers, mathematicians multiply the numbers. It is a basic mathematical procedure that is widely used in daily life. Multiplication is used when we need to mix groups of like sizes. Multiplication is a representation of the underlying idea of adding the same number repeatedly. The outcome of multiplying two or more numbers is referred to as the product of those numbers, and the factors are the quantities that are multiplied. Multiplying the numbers makes it simpler to add the same number repeatedly.

To learn more about multiplication visit: brainly.com/question/5992872

#SPJ1

3 0
1 year ago
Write a ratio and a percent for the shaded figure.
trapecia [35]

Total Squares = 10 × 10

= 100

Shaded Squares = 100 - (6×6)

= 64

Non Shaded = 6 × 6

= 36

Now Ratio of shaded portion is 64:100

= 16:25

Percentage = 64/100 × 100

= 64%

Answered by Gauthmath must click thanks and mark brainliest

8 0
3 years ago
Read 2 more answers
Cynthia's parents have offered to pay for most of her college education.
Solnce55 [7]

Answer:

$2,800

Step-by-step explanation:

14,000 x 0.80 = 11,200

14,000 - 11,200 = 2,800

7 0
3 years ago
A triangle has sides with lengths of 14 centimeters, 36 centimeters, and 39 centimeters. Is it a right triangle?
andreev551 [17]

Answer:

no

Step-by-step explanation:

this is because it does not follow the pythogras theorem which states that a^2+b^2=c^2

8 0
3 years ago
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