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3 years ago

Need help solving for Y

Mathematics

2 answers:

laiz [17]3 years ago

6 0

We are going to use tangent function to solve for angle y. Since the angle y is located towards the normal line (not the horizontal line). So
tan y = adjacent side / opposite side
tan y = 8/10
y = arctan 8/10 (use the calculator)
y = 38.66°

Whitepunk [10]3 years ago

5 0

The answer for this question is 45

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9(9h + 4b + 9), for h = 7 and b = 3<br><br> Evaluate

irakobra [83]

So, when adding in the 7 and 3 the new equation is:
9{(9x7)+(4x3)+9}

Following pemdas, you have to do parenthesis first. So now the equation is:
9(63+12+9)

Now distribute the 9:

567 + 108 + 81

And finally solve as a normal addition problem:

567 + 108 + 81= 756

So, the answer is 756.

I hope this helps:)

6 0

3 years ago

Can someone help me please

Digiron [165]

Answer:

x= 70°

Step-by-step explanation:

the lines overlapping the two sides on the triangle mean that those two sides are congruent, meaning that both of those angles would be equal to 70°

8 0

1 year ago

A rectangle has a area of 1/6 square centimeters and a length of 1.5 centimeters. What is the width? What is the perimeter?

Margaret [11]

Answer:

Step-by-step explanation:

width is 9 and the perimiter is 21

4 0

3 years ago

Assume that when adults with smartphones are randomlyâ€‹ selected, 63â€‹% use them in meetings or classes. If 7 adult smartphone

nlexa [21]

Answer:

5.78% probability that exactly 2 of them use their smartphones in meetings or classes.

Step-by-step explanation:

For each adult, there are only two possible outcomes. Either they use their smarthphone in meetings or classes, or they do not. The probability of an adult using their smartphone on meetings or classes is independent of other adults. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

In which $C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

And p is the probability of X happening.

63% use them in meetings or classes.

This means that $p = 0.63$

7 adult smartphone users are randomly selected

This means that $n = 7$

Find the probability that exactly 2 of them use their smartphones in meetings or classes.

This is P(X = 2).

$P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}$

$P(X = 2) = C_{7,2}.(0.63)^{2}.(0.37)^{5} = 0.0578$

5.78% probability that exactly 2 of them use their smartphones in meetings or classes.

8 0

2 years ago

Identify the number that does not belong -10/2, -13.4, 22.continuing 7

Ulleksa [173]

If we are going to simplify the first number by dividing the given numerator by the denominator, we will get an answer of -5. This number and the second one are examples of rational number for they can be easily expressed as quotient of two number. However, the third one is irrational due to the repeating number 7 after the decimal point. Therefore, the answer is the third choice.

4 0

3 years ago