Please help me with number 2

Answer:

Step-by-step explanation:

since we were handily told the formula for the volume of a hemisphere in your last problem , just use that,    2/3[tex]\pi[/tex][tex]r^{3}[/tex]

2/3[tex]\pi[/tex][tex]15^{3}[/tex] =   got it?

Answer:

4y - 12

Hope that helps! :)

-Aphrodite

Step-by-step explanation:

Answer:

4y - 12

(to answer, type a 4 in the first box and a 12 in the other)

Step-by-step explanation:

Multiply 4 to the values inside of the parentheses:

4 * y - 4 * 3 =

4y - 12

Answer:

The answer is A.

Step-by-step explanation:

Since it is a square we are finding the area of, we are multiplying two numbers. Which means 1/3 by the power of 2.

Answer:

B. y = 5x²

Step-by-step explanation:

As you can see, g(x) is a proper parabola, so it must be some variation of y = x².

Because the vertex of the parabola remains at (0, 0), know that there is no translation, so all we need to account for is the scale.

In the graph we can see that where x is equal to 1, y is equal to 5.  On a normal parabola that would instead be (1, 1), so we know that the y axis is scaled by a factor of five.  With that we can say that y = 5x².

Answer:

[tex] \displaystyle 14[/tex]

Step-by-step explanation:

we are given two temperature

4 degrees and -10 degrees

since it says to figure out the changed

substract

[tex] \displaystyle 4 - ( - 10)[/tex]

remove parentheses and change its sign

[tex] \displaystyle 4 + 10[/tex]

simplify addition:

[tex] \displaystyle 14[/tex]

and we are done!

Answer:

Step-by-step explanation:it’s abc

Answer:

Interquartile Range: 8

Step-by-step explanation:

25th Percentile: 13

50th Percentile: 17

75th Percentile: 21

So the answer must be 8

Hope this helps :)

Answer:

Step-by-step explanation:

The steps required to solve the given equation is required.

First step: Identify a = 1, b = 3 and c = -4

Second step: [tex]x=\dfrac{-3\pm \sqrt{3^2-4\times 1\left(-4\right)}}{2\times1}[/tex]

Last step: x = 1 and x = -4

The given equation is

[tex]x^2+3x-4=0[/tex]

Comparing with the general quadratic equation [tex]ax^2+bx+c=0[/tex] we have

a = 1

b = 3

c = -4

Applying the formula

[tex]x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}\\\Rightarrow x=\dfrac{-3\pm \sqrt{3^2-4\times 1\left(-4\right)}}{2\times1}\\\Rightarrow x=1\ \text{and}\ -4[/tex]

Learn more about solving quadratic equations:

https://brainly.com/question/1214333

Answer:

50 squared m

Step-by-step explanation:

Volume for triangles is base x hight / 2

10 x 10 = 100 / 2 = 50

Answer:

≠

Step-by-step explanation:

4/5 ≠ 9/12

≠ is the answer.

Answer:

≠

Step-by-step explanation:

First, find a common denominator

Let's use 60

Convert each fraction to a fraction with a denominator of 60

4/5 = 48/60

9/12 = 45/60

48/60 ≠ 45/60 so 4/5 ≠ 9/12

Answer:

6

Step-by-step explanation:

(X,Y)

Answer:

cheese = $3  load of bread = $2

Step-by-step explanation:

to check:

2c + 3b = 12

2(3) + 3(3) = 12

6+6=12

Answer:

m<GED = 126°

Step-by-step explanation:

The base angles of an isosceles are equal.

This implies that:

m<FEG = m<F

Thus:

m<F = ½(180° - 72°)

m<F = ½(108°)

m<F = 54°

Based on the exterior angle theorem, we have the following equation:

m<F + m<FGE = m<GED

Substitute

54° + 72° = m<GED

126° = m<GED

m<GED = 126°

Answer:

C

Step-by-step explanation:

i had the same question on my test lol

Answer:

wait for a second

Step-by-step explanation:

will help you

Answer:

Length = 33 m

Width = 11 m

Step-by-step explanation:

l = 3w

2l + 2w = 88

l + w =44

Subsitiute for l

3w + w = 44

4w = 44

w = 11

l = 3(11)

l = 33

Answer:

The answer is B Point M

Hope this helps as well! :)

Step-by-step explanation:

Answer:

Step-by-step explanation:

Let's take a look at the given angle 135°

The sketch of the angle which corresponds to [tex]-\dfrac{3\pi}{4}[/tex] unit circle and can be seen in the attached image below;

The trigonometric ratios are as follows for an angle θ on the unit circle:

Trigonometric ratio           related ratio on coordinate axes

sin θ                                     [tex]\dfrac{y}{1}[/tex]

cos θ                                    [tex]\dfrac{x}{1}[/tex]

tan θ                                     [tex]\dfrac{y}{x}[/tex]

csc θ                                     [tex]\dfrac{1}{y}[/tex]

sec θ                                     [tex]\dfrac{1}{x}[/tex]

cot θ                                      [tex]\dfrac{x}{y}[/tex]

From the sketch of the image attached below;

The six trigonometric ratio for 135° can be expressed as follows:

[tex]sin (-\dfrac{3\pi}{4})= \dfrac{y}{1}[/tex]

[tex]sin (-\dfrac{3\pi}{4})=- \dfrac{\sqrt{2}}{2}[/tex]

[tex]cos (-\dfrac{3\pi}{4})= \dfrac{x}{1}[/tex]

[tex]cos (-\dfrac{3\pi}{4})= -\dfrac{\sqrt{2}}{2}[/tex]

[tex]tan (-\dfrac{3\pi}{4})= \dfrac{y}{x}[/tex]

[tex]tan (-\dfrac{3\pi}{4})= \dfrac{-\dfrac{\sqrt{2}}{2}}{-\dfrac{\sqrt{2}}{2}}[/tex]

[tex]tan (-\dfrac{3\pi}{4})= -\dfrac{\sqrt{2}}{2}} \times {-\dfrac{2}{\sqrt{2}}[/tex]

[tex]tan (-\dfrac{3\pi}{4})= 1[/tex]

[tex]csc (-\dfrac{3\pi}{4})= \dfrac{1}{y} \\ \\ csc (-\dfrac{3\pi}{4})=\dfrac{1}{-\dfrac{\sqrt{2}}{2}} \\ \\ csc=1 \times -\dfrac{2}{\sqrt{2}} \\ \\csc =-\sqrt{2}[/tex]

[tex]sec (-\dfrac{3 \pi}{4})=\dfrac{1}{x} \\ \\ sec = \dfrac{1}{(-\dfrac{\sqrt{2}}{2})} \\ \\ sec = 1 \times -\dfrac{2}{\sqrt{2}} \\ \\ sec = - \sqrt{2}[/tex]

[tex]cot(-\dfrac{3 \pi}{4}) = \dfrac{x}{y} \\ \\ cot(-\dfrac{3 \pi}{4}) = \dfrac{-\dfrac{\sqrt{2}}{2} }{-\dfrac{\sqrt{2}}{2}} \\ \\ cot(-\dfrac{3 \pi}{4})= -\dfrac{\sqrt{2}}{2} } \times {-\dfrac{2}{\sqrt{2}}} \\ \\ cot (-\dfrac{3 \pi}{4}) = 1[/tex]

Answer:

Magnitude: [tex]2\sqrt{2}[/tex],  Angle: 135 degrees

Step-by-step explanation:

The magnitude of the vector ax + by is

[tex]\sqrt{a^2+b^2}\\\\\sqrt{(-2)^2+2^2}\\\\\sqrt{4+4}\\\\\sqrt{8}\\\\2\sqrt{2}[/tex]

The angle (in Standard Position) is 135 degrees.

See attached images.

Answer:

14800

Step-by-step explanation:

Area of trapezoid = [tex]A=\frac{a+b}{2}h[/tex]

Using the formula above, our equation will look like this:

[tex]\frac{145 + 225}{2} * 80 = 14800[/tex]

145 + 225 = 370

370/2 = 185

185 * 80 = 14800

PLZ GIVE BRAINLIEST

Answer:

First multiply the first equation by 2

2(2x + y = 25)

You'll have

4x + 2y = 50

Rewrite both equations

4x + 2y = 50

3x - 2y= 20

Add from the first equation you'll get

7x = 70... X = 10

Substitute x in one of the equations:

3(10) - 2y = 20

30 - 2y = 20

-2y = -10

y = 5

Answer:

y=0

Step-by-step explanation:

That's what I got from doing the equation

Answer:

For repeating decimal numbers like the decimals given in the data, you need to place a 9 in the denominator. For example, if the repeating decimal is 0.777777777..., the fraction should be 7/9 or if the repeating decimal is 0.567567567567..., the fraction should be 567/999. (The number of 9's depends on the amount of numbers being repeated.) In this case, because the repeating decimal is 0.88888888..., the fraction should be 8/9 and because the repeating decimal is 0.45454545..., the fraction should be 45/99 or 5/11.

Here's a visual representation from fraction to decimal for the first one:

Answer:

Number of pages Kayla read before dinner = [tex]9\frac{3}{8}[/tex] pages

Step-by-step explanation:

Given:

Total number of pages Kayla read on Friday = [tex]12\frac{1}{2}[/tex] = 25/2 pages

Number of pages Kayla read before dinner = [3/4][Total pages she read]

Find:

Number of pages Kayla read before dinner

Computation:

Number of pages Kayla read before dinner = [3/4][Total pages she read]

Number of pages Kayla read before dinner = [3/4][Number of pages Kayla read before dinner]

Number of pages Kayla read before dinner = [3/4][25/2]

Number of pages Kayla read before dinner = 75/8

Number of pages Kayla read before dinner = [tex]9\frac{3}{8}[/tex] pages

Answer:

D

Step-by-step explanation:

Pretty sure its D

Answer:   5

Step-by-step explanation:   P(broken bulb) = 1/20  =0.05

Estimated value E = np = 100·0.05 = 5

Answer:

-8p+64

Step-by-step explanation:

Multiply each term in parentheses by 8

8×-p= -8p

-8p+8×8 (8×8=64)

= -8p+64

Answer:

The answer is "-9".

Step-by-step explanation:

[tex]\mu = 11.4\\\\\sigma = 0.2\\\\ x = 10.9\\\\[/tex]

[tex]P(X <= 10.9)=?[/tex]

The z-value is determined using the central boundary theorem

[tex]z = \frac{(x - \mu)}{\sigma}[/tex]

  [tex]= \frac{(10.9 - 11.4)}{0.2}\\\\ = -2.5[/tex]

Calculating the value for Aaron

[tex]\mu = 11.5\\\\ \sigma = 0.1\\\\ x = 10.6\\\\ P(X <= 10.6)=?[/tex]

When the z-value is calculated using Central Limit Theorem

[tex]z = \frac{(x - \mu)}{\sigma}[/tex]

  [tex]= \frac{(10.6 - 11.5)}{0.1}\\\\ = -9[/tex]

Answer:

The times are equal when compared to each of their teams.

Step-by-step explanation: