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3 years ago

Please help please giving out brainless

Mathematics

1 answer:

Readme [11.4K]3 years ago

4 0

Answer:

Step-by-step explanation:

The length of arc AC (L) is calculated as

L = circumference of circle × fraction of circle

= 2πr × $\frac{150}{360}$

= 2π × 12 × $\frac{5}{12}$

= 2π × 5

= 10π ≈ 31.42 → C

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What are some equivalent expressions for :<br> 120.5y + 80.5y + 65.5y

Musya8 [376]

Answer:

266.5y

Step-by-step explanation:

120.5y+80.5y+65.5y

201y+65.5y

266.5y

8 0

3 years ago

Describe and correct the error a student made finding the intercepts of the graph of the line 4x-6y=12

Bingel [31]

Answer:the error is when 6y=12

Step-by-step explanation:

the original problem says 4x-6y=12

so when you get rid of the 4x, it should still be -6y not positive

6 0

3 years ago

PLZ Help -its Easy (i think)

Anna71 [15]

Y=5x I think. Hope this helps

4 0

4 years ago

Read 2 more answers

Determine the area of a triangle with A=27.8 B = 107.3 c=4<br><br><br> Answer: B) 10 units^2

Mila [183]

Correct question:

Determine the area of a triangle with A=27.8° B = 107.3° c=4

Answer:

Area of the triangle is 5.04 units²

Step-by-step explanation:

Given;

A = 27.8°

B = 107.3°

C = 180 - (27.8 + 107.3) = 44.9°

c = 4

Now, we determine the remaining two sides of the triangle using sine rule

$\frac{Sine \ A}{a} = \frac{Sine \ C}{c} \\\\a = \frac{Sine A*\ c}{Sine C} = \frac{Sine(27.8) \ *4}{Sine(44.9) } =2.64\\\\\frac{Sine \ B}{b} = \frac{Sine \ C}{c}\\\\b= \frac{Sine B*\ c}{Sine C} = \frac{Sine(107.3) \ *4}{Sine(44.9) } =5.41$

Apply Hero's formula;

$A = \sqrt{s(s-a)(s-b)(s-c)} \\\\s = \frac{a+b+c}{2} = \frac{2.64\ +\ 5.41\ +\ 4}{2} = 6.025\\\\A = \sqrt{6.025(6.025-2.64)(6.025-5.41)(6.025-4)} \\\\A = \sqrt{6.025(3.385)(0.615)(2.025)} \\\\A = \sqrt{25.3989} = 5.04 \ units^2$

Therefore, area of the triangle is 5.04 units²

5 0

4 years ago

A report states that the mean yearly salary offer for students graduating with a degree in accounting is $48,722. Suppose that a

max2010maxim [7]

Answer:

Option C - Reject H0. We have convincing evidence that the mean salary offer for accounting graduates of this university is higher than the national average of $48,722.

Step-by-step explanation:

First of all let's define the hypothesis;

Null hypothesis;H0; μ = $48,722

Alternative hypothesis;Ha; μ > $48,722

Now, let's find the test statistic for the z-score. Formula is;

z = (x' - μ)/(σ/√n)

We are given;

x' = 48,722

μ = 49,870

σ = 3900

n = 50

Thus;

z = (49870- 48722)/(3900/√50)

z = 2.08

So from online p-value calculator as attached, using z = 2.08 and α = 0.05 ,we have p = 0.037526

This p-value of 0.037526 is less than the significance value of 0.05,thus, we reject the claim that that the mean salary offer for accounting graduates of this university is higher than the national average of $48,722

8 0

4 years ago

Please help please giving out brainless￼

Please help please giving out brainless