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2 years ago

PLZ HELP ASAP!!!!!!!!!!!

Mathematics

2 answers:

IRISSAK [1]2 years ago

8 0

Okay, so for the range you need to order the numbers from least to greatest. Then do the biggest number minus the smallest number. For example, the range of 20,30,40,50 would be 50 - 20. If they were listed like 30,20,50,40 you have to put them in order.

lorasvet [3.4K]2 years ago

5 0

For number 3 add all the numbers and divide how numbers you have

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Finding area of circle with radius , giving brainliest :)) pls help asap

Schach [20]

Answer:

number 2 is the answer or 4*pi inches² or 12.6

Step-by-step explanation:

6 0

2 years ago

The radii of two circles are in the ratio of 3 to 1. Find the area of the smaller circle if the area of the larger circle is 27

Naddik [55]

ANSWER
$3\pi sq.\: in.$

EXPLANATION

Let R be the radius of the bigger circle and r, be the radius of the smaller circle.

Then their ratio is given as,

$R:r=3:1$

We can rewrite it as fractions to get,

$\frac{R}{r} = \frac{3}{1}$

We make R the subject to get,

$R = 3r$

The area of the bigger circle can be found using the formula,

$Area=\pi {r}^{2}$

This implies that,

$Area=\pi ({3r})^{2}$

$Area=9\pi {r}^{2}$

But it was given in the question that, the area of the bigger circle is 27π.

$27\pi=9\pi {r}^{2}$

We divide through by 9π to get,

$3 = {r}^{2}$

This means that,
$r = \sqrt{3}$

The area of the smaller circle is therefore

$= \pi {( \sqrt{3}) }^{2}$

$= 3\pi$

8 0

3 years ago

Read 2 more answers

PLEASE HELP ME ON THIS THANK U

serg [7]

1. y=1.04+61.92
i think correct answer on the second slide is A

4 0

2 years ago

A publishing company claims that in fall 2019, the average price of college textbooks for a single semester is $385. Suppose you

hram777 [196]

Answer:

We accept H₀ . We don´t have enough evidence to express the publisher claim is not true

Step by Step explanation:

We must evaluate if the mean of the price of college textbooks is different from the value claimed by the publisher

n < 30 then we must use t - distrbution

degree of freedom n - 1 df = 22 - 1 df = 21

As the question mentions " different " that means, a two-tail test

At 0,01 significance level α = 0,01 α/2 = 0,005

and t(c) = 2,831

Test Hypothesis

Null Hypothesis H₀ μ = μ₀

Alternative hypothesis Hₐ μ ≠ μ₀

To calculate t(s)

t(s) = ( μ - μ₀ ) /σ/√n

t(s) = ( 433,50 - 385 ) / 86,92 / √22

t(s) = 2,6171

Comparing t(c) and t(s)

t(s) < t(c)

Then t(s) is in the acceptance region we accept H₀. We don´t have enough evidence to claim that mean price differs from publisher claim

6 0

2 years ago

Please help me with this geometry question, Im pretty sure you need to use SAS congruence rule

Ierofanga [76]

Congruent triangles are two or more triangles with the same length of sides and measure of internal angles. Thus the required proof is as shown below:

From the given diagram, it can be observed that:

AB = AC (similar property of two lines)

AC = AE (similar property of two lines)

Also,

m<A is a common angle to ΔABC and ΔADE

So that it can be concluded that;

ΔABC ≅ ΔADE (Side-Angle-Side property)

Thus since ΔABC ≅ ΔADE are congruent, then;

BC = DE (corresponding sides of congruent triangles)

For further clarifications on congruent triangles, visit: brainly.com/question/1619927

#SPJ1

7 0

1 year ago