How many edges does this shape have?

Missing Part:

a. A red ball is drawn

b. A white ball is drawn

Answer:

a. [tex]P(Red) = 0.4375[/tex]

b. [tex]P(White) = 0.3125[/tex]

Step-by-step explanation:

Given

[tex]Red = 7[/tex]

[tex]White = 5[/tex]

[tex]Yellow = 4[/tex]

First, we need to calculate the total

[tex]Total = Red + White + Yellow[/tex]

[tex]Total = 7+5+4[/tex]

[tex]Total = 16[/tex]

Solving (a): Probability of Red.

This is calculated by dividing number of red balls by the total

So:

[tex]P(Red) = \frac{Red}{Total}[/tex]

[tex]P(Red) = \frac{7}{16}[/tex]

[tex]P(Red) = 0.4375[/tex]

Solving (a): Probability of White.

This is calculated by dividing number of white balls by the total

So:

[tex]P(White) = \frac{White}{Total}[/tex]

[tex]P(White) = \frac{5}{16}[/tex]

[tex]P(White) = 0.3125[/tex]

Answer:

40.

Step-by-step explanation:

16 × 2 1/2= X

= 40.

Answer:

$1,657.82

Step-by-step explanation:

435.20 + 510.20 + 345.12 + 142 + 225.30 = total checking balance

1,657.82

Answer:

I think that yes they are, but I maybe wrong.

Step-by-step explanation:

I believe that this is true because of the Angle-Angle congruence theorem.

Answer:

n= -5

Step-by-step explanation:

The rounding of the numbers to 1 significant figure are-

a) 687 × 164 = 140000

b) 476 × 2354 = 1000000

c) 8612 × 1497 = 9000000.

a) 687×164

This number can be written in form of rounding to 1 significant figure as;

700 × 200 = 140000

b) 476×2354

As, the number can be written in form of rounding to 1 significant figure as;

500 × 2000=1000000

c) 8612×1497

These number can be written in form of rounding to 1 significant figure as;

9000×1000=9000000

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Answer:

i think it is 15 for x

and i think it's 10 for y

Step-by-step explanation:

tell me if i'm wrong

Answer:

-√64: rational

15 pi: irrational

46.86 repeated: rational

15/19: rational

-2√6: irrational

Step-by-step explanation:

From the picture that I used, I was able to find out which ones were rational and irrational.

-√64: rational because it equals to -8

15 pi: has "pi" in it

46.86 repeated: as long as it's repeated, it's rational

15/19: fractions are usually rational

-2√6: √6 is cannot be rationalized

Answer:

it's Not a perfect square because 3.9x2.9 is 8.41 which means it isn't a perfect square

System of equations:

x - y = 3

x + 2y = 21

solving using substitution:

1. isolate one of the variables in one of the equations

x - y = 3

x = 3 + y

2. substitute 3 + y into the other equation

3 + y + 2y = 21

3. simplify

3 + 3y = 21

3y = 18

y = 6

4. substitute 6 back into one of the equations and solve for x

x - 6 = 3

x = 9

Answer:

Raul performed better in the biology test

Step-by-step explanation:

Given

History

[tex]Score = 80[/tex]

[tex]Mean = 70[/tex]

[tex]Standard\ Deviation = 10[/tex]

Biology

[tex]Score = 75[/tex]

[tex]Mean = 70[/tex]

[tex]Standard\ Deviation = 2.5[/tex]

Required

Where did he perform better relative to other students

To do this, we simply calculate the z score in both tests and make comparison.

z score is calculated as thus;

[tex]z = \frac{x - Mean}{SD}[/tex]

For history;

[tex]z = \frac{80 - 70}{10}[/tex]

[tex]z = \frac{10}{10}[/tex]

[tex]z = 1[/tex]

For biology;

[tex]z = \frac{75 - 70}{2.5}[/tex]

[tex]z = \frac{5}{2.5}[/tex]

[tex]z = 2[/tex]

Since the z score in the biology test is greater than that of the history test, then he performed better in the biology test

The step that is not allowed is (b) add the left side of equation 2 to the left side of equation 1

The system of equations is given as:

2x - 3y = 12

-2x + y = 8

This means that the step that is not allowed is (b)

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Answer:

B. 6.07

HAS A SIX THAT IS TEN TIMES THE VALUE OF THE SIX IN 1.67

Answer:

Step-by-step explanation:

Pick the two easiest points to deal with.

(0,4)  and (2,0)

Find m

m = (y2 - y1)/(x2 - x1)

y2 = 4

y1 = 0

x2 =0

x1 = -2

m = (4 - 0)/(0 - - 2)

m = 4/2 = 2

Now use one of the points to find b

y = mx + b        Use (0,4)

4 = 2*0 + b

b = 4

The equation you want is y = 2x + 4

Answer:

192.5

Step-by-step explanation:

amount of money for one week = 450

amount of money for 3 weeks = 1350

15 percent of 1350 = 1350 x 15

                                        = 19250

divide 19250 by 100

answer is 192.5

                 ---------------------------------------------------------------------------

The line tangent to g(x) at x = 3 is:

y = 4*x - 18

If we have a function y = f(x), the slope of the line tangent at the point x = a is given by f'(a).

In this case, we know that g'(3) = 4, so the slope of the line is 4.

Then the line is something like:

y = 4*x + b

To find the value of b we use the fact that this line must pass through the point (3, g(3))

And we know that g(3) = -6

Then this line must pass through the point (3, -6), replacing that we get:

-6 = 4*3 + b

-6 = 12 + b

-6 - 12 = b = -18

Then the tangent line is:

y = 4*x - 18

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The length of the median FQ in image of the two similar triangles is: 36.

The corresponding segments and median of similar triangles are proportional, therefore, we will have the following:

PC/FQ = PB/QE

Substitute

27/FQ = 18/24

FQ = (24 × 27)/18

FQ = 36.

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Answer:

[tex]your \: answer \: is \: option \: a[/tex]

I am sure about this answer.

Step-by-step explanation:

2/3 and 5/12

hope it helps..

pls mark as brainliest

Answer:

? = -2

Step-by-step explanation:

a + b = -2

so, now we need to find all (a + b) combinations in the large expression.

for example, we know

a = -2 - b

or b = -2 - a

and then

-b = 2 + a

but also

3b = -6 - 3a

so that

a - b = a + 2 + a = 2a + 2

therefore

(a + b)(a - b) = a² - b² = -2(2a + 2) = -4a - 4

(-4a - 4 - 12b - 36)/(-4a - 4 - 6a - 6b) =

(-4(a + 3b) - 40)/(-4a - 4 - 6(a + b)) =

(-4(a - 6 - 3a) - 40)/(-4a - 4 - 6×-2) =

(-4(-2a - 6) - 40)/(-4a + 8) =

(8a + 24 - 40)/(-4a + 8) = (8a - 16)/(-4a + 8) =

-2×(-4a + 8)/(-4a + 8) = -2

Answer:

probably B.

Step-by-step explanation:

if he just halves the recipe, then it would still be 1/4 tablespoon because he is making 2 pies.

Answer:

54

Step-by-step explanation:

Answer:

im thinking either b or c im leaning towards b

Step-by-step explanation:

Answer:

C. -3

Step-by-step explanation:

First, find the slope of side QR. Calculate the slope by finding the ratio of the difference between the y-coordinates and the difference between the x-coordinates of points Q and R.

The slope of side QR can be found as shown below.

Now, using the slope of side QR, draw a triangle RST similar to the right triangle PQR with S(x, 7) as one vertex.

Next, find the value of x as shown below.

Therefore, the value of x in the point (x, 7) is -3.

Answer: A.

Step-by-step explanation: The formula for the volume of a sphere is 4/3 x pi x radius cubed. The final answer is approx 121.1, which rounds down to 121. Brainliest plz

The option that represents the volume of the sphere given the radius is 113.04 in³.

The volume of the sphere is the space occupied within the sphere.

Volume of a sphere = 4/3 x pi x r³

4/3 x (22/7) x 3³ = 113.04 in³

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Answer:

Step-by-step explanation:

hello :

the complement of the set given that U = {x | x is in I and −3 ≤ x ≤ 9}is :

F = {x | x is in I and x <-3 or 9 < x}

same method for :{x | x is in I and −2 ≤ x < 5}

H={x | x is in I and x <-2 or 5 ≤ x}

Answer:

B.

Step-by-step explanation:

The amount of baking soda needed for a full sheet cake is 5.20 teaspoons.

A fraction is a non-integer that is made up of a numerator and a denominator that is separated by a horizontal line. The numerator is the number above the horizontal line and the denominator is the number below the horizontal line. An example of a fraction is 1/8.

In order to determine how much baking soda is needed for a full sheet cake, multiply the amount that is needed for 1/8 of the sheet cake by 8. Multiplication is the mathematical operation that is used to determine the product of two or more numbers.

Baking soda needed for a full sheet cake =  8 x 0.65 = 5.2 tablespoons

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Answer:

negatives to the left of 0, positives to the right of 0.