2(4y) + 4(3r) answer

Answer:

π= 25.12 , r=6.28

area of a circle = πr²

= 25.12×6.28²

= 25.12×39.4

= 990.6cm²

Step-by-step explanation:

circumference of a circle is 2π

radius of a circle is 2π/4

Answer:

The way i solved it i got {In5, -n1} (not sure of my answer but I hope it helps)

Answer:

he can buy 18 baseball cards

Answer:

The sample size necessary is 237.

Step-by-step explanation:

We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:

[tex]\alpha = \frac{1 - 0.96}{2} = 0.02[/tex]

Now, we have to find z in the Ztable as such z has a pvalue of [tex]1 - \alpha[/tex].

That is z with a pvalue of [tex]1 - 0.02 = 0.98[/tex], so Z = 2.056.

Now, find the margin of error M as such

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

In which [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample.

Find the sample size necessary to estimate that mean with a 15-minute sampling error.

A sample size of n is necessary.

n is found when [tex]M = 15[/tex]

We have that [tex]\sigma = 112.2[/tex]

So

[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]

[tex]15 = 2.056\frac{112.2}{\sqrt{n}}[/tex]

[tex]15\sqrt{n} = 2.056*112.2[/tex]

[tex]\sqrt{n} = \frac{2.056*112.2}{15}[/tex]

[tex](\sqrt{n})^2 = (\frac{2.056*112.2}{15})^2[/tex]

[tex]n = 236.5[/tex]

Rounding up,

The sample size necessary is 237.

Answer:

Step-by-step explanation:

vdvfdvfdvfvfb fd

Answer:

associative = (2 + 6) + 3 = 2 + (6 + 3)

commutative = 8x4=4x8

distributive is the one with 2(3+7)

identity of addition 9+0

identity of multiplication (16)(1)

The x - intercept of the line is at Point X(9, 0).

We have the following equation of a straight line -

y = 4x - 36

We have to find the x - intercept of the of this line.

The general equation of a straight line is as follows -

y = mx + c

where -

m - slope of line

c - intercept of line on y - axis.

According to the question, we have -

y = 4x - 36

Now, comparing this line with the general equation of line -  y = mx + c, we get -

m = 4

c = - 36

for the x - intercept of the line, substitute y = 0. We get -

0 = 4x -36

4x = 36

x = 9

Hence, the x - intercept of the line is at Point X(9, 0).

Refer to the graph attached for more clarity.

To solve more questions on Graphs of straight line, visit the link below -

brainly.com/question/27757761

#SPJ2

Answer:

$20

Step-by-step explanation:

John=$12

Tony=$24

Eric=$20

multiply 12 by 2 to get Tony's money then subtract 4 for eric's money

Answer:

20

Step-by-step

Tony : 24

Eric : 24 - 4

Answer : 20

Answer:

A.

Hope that helps!

Step-by-step explanation:

Answer:

A. 3x = 6

Step-by-step explanation:

I hope this can help!

Have a nice day!

Answer:

300 centimeters squared.

Step-by-step explanation:

Given that a parallelogram has a base of 20 centimeters, a height of 15 centimeters, and a side length 21 centimeters, to determine the value of its area, the following calculation must be performed:

Area = Base x Height

Area = 20 x 15

Area = 300

Thus, the area of the parallelogram is 300 square centimeters.

Answer:

Rounded to the nearest tenth: 10.6

Answer not rounded: 10.56

Step-by-step explanation:

Answer:

The average value of a, b and c is [tex]\frac{2c}{3}[/tex]

Step-by-step explanation:

Average value:

Sum of all values by the number of values.

In this question:

3 values, a, b and c.

We have that:

[tex]A = \frac{a+b+c}{3}[/tex]

Since [tex]a+b = c[/tex]

[tex]A = \frac{a+b+c}{3} = \frac{c+c}{3} = \frac{2c}{3}[/tex]

The average value of a, b and c is [tex]\frac{2c}{3}[/tex]

Answer:

A because when you add the angles up it has to equal 180

Step-by-step explanation:

Answer:

A) ∠ABC and ∠DEF

Step-by-step explanation:

Supplementary angles add up to 180 degrees total. So if you take 180 and subtract 118 you get 62.

∠ABC = 62

∠DEF = 118

180 - 118 = 62

180 - 62 = 118

118 + 62 = 180

Answer:

dang I think its 5 I hope it is

Answer: j > 5

-

Step-by-step explanation:

Sorry it wouldn’t let me put it with the line

Answer:

[tex]\huge\boxed{\sf Option \ 2}[/tex]

Step-by-step explanation:

[tex]\sf (\frac{4}{5})^3 \\\\[/tex]

This means that 4/5 repeats itself 3 times.

So,

[tex]\sf = \frac{4}{5} * \frac{4}{5} * \frac{4}{5} \\\\= \frac{64}{125} \\\\\rule[225]{225}{2}[/tex]

Hope this helped!

Answer: Choice 2: 4/5 • 4/5 • 4/5 = 64/125

Step-by-step explanation: The exponent tells you how many times you have to multiply the 4/5. Since the exponent is 3, we know to multiply 4/5 with itself 3 times, like this: 4/5 • 4/5 • 4/5, which will get us 64/125

Answer:

wow

Step-by-step explanation:

no way bro that's brazy

Answer:

An irregular polygon is any polygon that is not a regular polygon. It can have sides of any length and each interior angle can be any measure. They can be convex or concave, but all concave polygons are irregular since the interior angles cannot all be the same.

Step-by-step explanation:

Answer:

the density of the block would be 10 g/cm^3

Answer:

sorry the image is not clear

Answer:

48

Explanation:

36÷75=

0.48

Answer:

She can buy 13 bananas

Step-by-step explanation:

She has 11.75 and each banana costs .89

Start by dividing 11.75/.89 = 13.20

She will be able to buy 13 bananas total since she cannot buy a portion of a banana (0.2) so she will just have some leftover change.

Answer:

20 Red flowers

40 Yellow flowers

20 Pink flowers

Step-by-step explanation:

1/3 of 120 is 40

1/6 of 120 is 20

40+20=60

120-60=60

Remaining=60

1/3 of 60 is 20

area = lw (length times width) so if we multiply 48 and 39 it'd be equal to

1872

Answer:

Step-by-step explanation:

Did u find it? Because I can’t figure it out euther

Answer:

x = sqrt(39)

Step-by-step explanation:

Let y = common side of the two triangles.

Upper right triangle:

6^2 + y^2 = 10^2

y^2 = 100 - 36

y^2 = 64

y = 8

Lower left triangle:

5^2 + x^2 = 8^2

x^2 = 64 - 25

x^2 = 39

x = sqrt(39)

Answer:

$75

Step-by-step explanation:

15 x 5 = 75

trust me bro :)

Answer:

sssssssssssssssssssssssscscscs

Step-by-step explanation:

Seminar Explanation: Or if they like teaching, then to move to a high-class school to teach where the staff and co-workers are friendly, and where the pay is good.

Answer:

B is the answer

Step-by-step explanation:

Have a great day!