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Nostrana [21]
3 years ago
10

Just please help me, im trying to cram multiple things at once (house is crazy) and I just cant seem to concentrate and understa

nd these.

Mathematics
2 answers:
Anastasy [175]3 years ago
5 0
Y=31.2
X=15.6

I rounded both to the nearest tenth place.
nikdorinn [45]3 years ago
3 0

Answer:

Step-by-step explanation:

here is how you find the answer

Use SOH CAH TOA to recall how the trig functions fit on a triangle

SOH: Sin(Ф)= Opp / Hyp

CAH: Cos(Ф)= Adj / Hyp

TOA: Tan(Ф) = Opp / Adj

now apply the above rules to the given triangle

where we are given the angle of 30°  and the Adj side of 27

y is the Hyp of this triangle and x is the Opp side of this triangle, now plug in the given values  as follows

so use CAH   Cos(30) = 27 / Hyp

Hyp = 27 / Cos(30)

Hyp = 27 / (\sqrt{3} / 2)

Hyp = 27 * 2 /  \sqrt{3}

Hyp = 54 / \sqrt{3}

y = 54 / \sqrt{3}

use SOH, since we know the exact value for the Hyp from above

Sin(30) = Opp / ( 54 / \sqrt{3}  )

Sin(30) * 54 / \sqrt{3}  = Opp

1/2 * 54 / \sqrt{3}  = Opp

27 / \sqrt{3}  = Opp

x = 27 / \sqrt{3}

:)

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By 8:00 a.m., the snack bar had made $3,256 in sales. By noon, the snack bar’s total sales were $8,821. About how much money did
lisabon 2012 [21]

Answer: B. $1,391.25

Step-by-step explanation:

$8,821 - $3,256 = $5,565

Snack bar made $5,565 total between 8 am - noon

There are four hours between 8 am - noon.

$5,565 ÷ 4 = $1,391.25.

The snack bar took in around $1,391.25 each hour between 8:00 am - noon.

8 0
3 years ago
Read 2 more answers
The data show systolic and diastolic blood pressure of certain people. Find the regression​ equation, letting the first variable
MakcuM [25]

Full Question:

The data show systolic and diastolic blood pressure of certain people. Find the regression equation, letting the first variable be the independent (x) variable. Find the best predicted diastolic pressure for a person with a systolic reading of 113. use a significance level of 0.05.

Systolic| 150 129 142 112 134 122 126 120

Diastolic| 88 96 106 80 98 63 95 64

a. What is the regression equation?

^y = __ + __x (Round to two decimal places as needed.)

b. What is the best predicted value?

^y is about __ (Round to one decimal place as needed.)

Answer:

A. yhat = a + bx = -10.64 + 0.75x

B. 74.0

Step-by-step explanation:

A. To find the regression equation here, we apply the formulas and then apply it to find the value of y given value of x:

calculate xbar and ybar which is the average of the variables:

Where n(number of values in x or y)=8

xbar = sum of x/n = 129.375

ybar = sum of y/n = 86.25

to calculate b

b= [Sum x^2 * Sum y - Sum x * Sum x*y] / [N*Sum x^2 - (Sum x)^2]

b = 0.74891

To calculate a

a = ybar - b * xbar = -10.64023

Regression equation:

y=mx+b= -10.64 + 0.75x

B. given x = 113,

y = -10.64023 + 0.74891 * 113

y= 74.0

5 0
3 years ago
What does X=?<br> I cannot figure out how to solve this problem please help!
Alona [7]

Answer:

Step-by-step explanation:

S = (n - 2).180°

n = quantity of sides

S = all angles addition

S = (5 - 2).180°

S = 3.180°

S = 540°

104 + 117 + 100 + 124 + x = 540

445 + x = 540

x = 540 - 445

x = 95°

I hope I've helped you.

5 0
3 years ago
Which ordered pair makes both inequalities true for y&gt; -2x + 3 and y ≤ x - 2
lina2011 [118]

Answer:

(2,0)

Step-by-step explanation:

Substitution, 0> -2(2) + 3 which equals, 0> -1 True

0= 2 - 2 True

6 0
3 years ago
The larger of two numbers is 15 more than the smaller number. If the sum of the number is 45, find the number
katrin2010 [14]

x+y=45 and x=y+15

Therefore, x is 30 and y is 15

x is greater than y by 15, and their sum in 45.

The larger number is 30 and the smaller number is 15.

7 0
3 years ago
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