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
maw [93]
3 years ago
6

Find the radius of the circle below. Round your answer to the nearest tenth.

Mathematics
1 answer:
Butoxors [25]3 years ago
6 0

Answer:

5.8 cm

Step-by-step explanation:

Area of the shaded sector of the circle = 31.2 cm²

Angle (θ) of the minor sector = 360 - 256 = 104°

Are of sector of a circle is given as, θ/360*πr²

Therefore:

\frac{104}{360}*3.142*r^2 = 31.2

0.29*3.142*r^2 = 31.2

0.91*r^2 = 31.2

Divide both sides by 0.91

\frac{0.91*r^2}{0.91} = \frac{31.2}{0.91}

r^2 = \frac{31.2}{0.91}

r^2 = 34.286

r = \sqrt{34.286}

r = 5.8 (nearest tenth)

You might be interested in
Thompson and Thompson is a steel bolts manufacturing company. Their current steel bolts have a mean diameter of 144 millimeters,
valentinak56 [21]

Answer:

The probability that the sample mean would differ from the population mean by more than 2.6 mm is 0.0043.

Step-by-step explanation:

According to the Central Limit Theorem if we have a population with mean μ and standard deviation σ and appropriately huge random samples (n > 30) are selected from the population with replacement, then the distribution of the sample  means will be approximately normally distributed.

Then, the mean of the distribution of sample mean is given by,

\mu_{\bar x}=\mu

And the standard deviation of the distribution of sample mean  is given by,

\sigma_{\bar x}=\frac{\sigma}{\sqrt{n}}

The information provided is:

<em>μ</em> = 144 mm

<em>σ</em> = 7 mm

<em>n</em> = 50.

Since <em>n</em> = 50 > 30, the Central limit theorem can be applied to approximate the sampling distribution of sample mean.

\bar X\sim N(\mu_{\bar x}=144, \sigma_{\bar x}^{2}=0.98)

Compute the probability that the sample mean would differ from the population mean by more than 2.6 mm as follows:

P(\bar X-\mu_{\bar x}>2.6)=P(\frac{\bar X-\mu_{\bar x}}{\sigma_{\bar x}} >\frac{2.6}{\sqrt{0.98}})

                           =P(Z>2.63)\\=1-P(Z

*Use a <em>z</em>-table for the probability.

Thus, the probability that the sample mean would differ from the population mean by more than 2.6 mm is 0.0043.

8 0
3 years ago
Find the value of (x^2-5x + 4) if x = 7.
Alina [70]

Answer:

18

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
the longest side of an acute isosceles triangle 8 centimeters . Round to the nearest tenth, what is the smallest possible length
Triss [41]
Let x be the <span>length of each of two congruent sides.

</span>The triangle will be аcute if:     
x² + x² > 8²
2x² > 64
x² > 32
x > √32
x > 5.657

So, the smallest possible length of one of two congruent sides have to be 5.7 cm  (<span>to the nearest tenth)</span>
7 0
3 years ago
Read 2 more answers
What’s the total value of 20 quarters, 40 dimes, 30 nickels, and 15 pennies
Inessa [10]

Answer$10 65 cents

Step-by-step explanation:

20/4= $5 40/10= $4  .05 x 30= $1.50 and add those together to get $10.50 then add the 15 pennies which is $10.65

6 0
3 years ago
Read 2 more answers
A grocery store clerk put only packages of flour tortillas and packages of corn tortillas on a shelf. The ratio of the number of
Likurg_2 [28]

Answer: 18

Step-by-step explanation:

The options are:

A. 23

B. 18

C. 14

D. 32

Since we are told that the ratio of the number of packages of corn tortillas to the total number of packages on the shelf was 7 to 16. This simply means that the ratio of flour tortillas to the total number of packages on the shelf was (16 -7 = 9) 9 to 16.

Therefore, to get the number that could represent the number of packages of flour tortillas the clerk put on the shelf we have to find the multiple of 9 in the question given . This will be:

Multiples of 9 = 9, 18, 27, 36, 45 ....

Based on the option, the answer will be 18.

8 0
3 years ago
Other questions:
  • The Henderson family and the Tran family each used their sprinklers last summer. The Henderson family's sprinkler was used for 1
    7·1 answer
  • What is the exact area and circumference?
    8·1 answer
  • Vince borrows $900 to buy a couch. He will pay off the loan by paying 1.5% simple interest for 2 years. Vince incorrectly calcul
    13·2 answers
  • On Monday, Dalaya had $15. On Tuesday, she bought a t-shirt for $12. On Wednesday, she found $5.50 on the street. On Friday, she
    7·2 answers
  • Identify the slope of the equation -x+2y=-14
    15·2 answers
  • Le help needed with like terms and distributive property
    11·1 answer
  • Please help! Find x if 2(x+1)=x+5
    13·2 answers
  • PLEASE HELP!! With explanation/solution please!!
    9·2 answers
  • What is the vertex form of the quadratic equation represented on the table?
    6·1 answer
  • Which ordered pair maximizes the objective function p = 3x 8y? (0, 0) (2, 7) (5, 6) (8, 1)
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!