1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
prisoha [69]
4 years ago
6

BRAINLIEST ANSWER TO ANYONE WHO HELPS ME FIND QUESTIONS 1,2 AND 3

Mathematics
1 answer:
Vladimir [108]4 years ago
6 0
1. a)CK²=CH²+HK²,  CH - radius
CH²=CK²-HK²=50²-30²=2500-900=1600 ft²
CH=40 ft  -- radius
b) cos(KCH)= CH/CK=40/50=4/5
KCH=arccos(4/5)≈36.87°
2)C=2πr≈2*3.14*40=251.2 ft
C=2*40π=80π ft --- exact
3) A =πr²=40²π=1600π ----exact
A≈1600*3.14=5024 ft
You might be interested in
Assume the selling price of your house calculate the
emmasim [6.3K]

Answer:

$14000

Step-by-step explanation:

Given that :

Commission 5% of sale price

Sale price of house = $280,000

Commission = 5% of $280,000

Hence,

Commission = 0.05 * $280,000

Commission = $14,000

4 0
3 years ago
The claim is that the proportion of accidental deaths of the elderly attributable to residential falls is more than 0.10, and th
Alex777 [14]

Answer:

The correct option is b) 4.71

Step-by-step explanation:

Consider the provided information.

Test statistic for proportion: z=\frac{\hat p-p}{\sqrt{\frac{pq}{n}}}

It is given that the claim is that the proportion of accidental deaths of the elderly attributable to residential falls is more than 0.10, and the sample statistics include n=800 deaths of the elderly with 15 percent of them attribute to residential falls.

Therefore, \hat p=0.15, p = 0.1, q = 1-0.1 = 0.9 and n = 800.

Substitute the respective values in the above formula.

z=\frac{0.15-0.1}{\sqrt{\frac{0.1\times0.9}{800}}}

z=\frac{0.05}{\sqrt{\frac{0.09}{800}}}

z\approx4.71

Hence, the correct option is b) 4.71

3 0
3 years ago
Decimal and integers are both classified as ______ numbers
Evgesh-ka [11]

Answer:whole numbers

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Find the LinReg line of best fit for this data set.
finlep [7]

The LinReg line of best fit for this data set is ŷ = -1.24X + 0.66

<h3>What is regression line?</h3>

A linear regression line has an equation of the form Y = a + bX, where X is the explanatory variable and Y is the dependent variable.

Given:

(−5, 6.3),

(−4, 5.6),

(−3, 4.8),

(−2, 3.1),

(−1, 2.5),

(0, 1.0),

(1, −1.4)

Sum of X = -14

Sum of Y = 21.9

Mean X = -2

Mean Y = 3.1286

Sum of squares (SSX) = 28

Sum of products (SP) = -34.6

Regression Equation,

ŷ = bX + a

b = SP/SSX = -34.6/28 = -1.23571

a = MY - bMX = 3.13 - (-1.24*-2) = 0.65714

ŷ = -1.23571X + 0.65714

ŷ = -1.24X + 0.66

Learn more about regression line here:

brainly.com/question/7656407

#SPJ1

3 0
2 years ago
Which of the following is the most appropriate unit to describe the rate of the cost of gasoline?
nikdorinn [45]
<span>C.Gallons per dollar, because the dependent quantity is the gallons</span>
3 0
3 years ago
Read 2 more answers
Other questions:
  • What is the unit and unit rate for $7.96 5 pounds
    12·1 answer
  • Please help with this question.
    11·1 answer
  • Solve 1/24m - 2/3 = 3/4 for m
    13·2 answers
  • Find the square root of 676
    13·1 answer
  • Allan plays a video game in which he starts with 0 points. In round 1, he loses 3 1/2 points, in rounds 2, he wins 28 1/2 points
    15·1 answer
  • Find the least squares regression equation using the school year (in number of years after 2000) for the input variable and the
    9·1 answer
  • Klarissa is baking a cake. The recipe calls for \large 1\frac{3}{4} cups of flour, and Klarissa wants to triple the recipe. How
    8·1 answer
  • What are the coordinates of the point on the directed line segment from (−4,−10) to (10, -2) that partitions the segment into a
    10·1 answer
  • If f(x)=3x-2 and g(x)=2x+1 find (f-g)(x)
    10·1 answer
  • Help me photo is attached below pleaseeee I beg youuu
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!