Simplify. PLEASE HELP WORTH 25 POINTS

Answer:

The answer is 5

Step-by-step explanation:

I took the test :)

Answer 5

Step-by-step explanation:

Answer:

it cannot be determined not enough info

Answer:

The formula is given as E(X)=μ=∑xP(x)        Step-by-step explanation:

multiply each value of the random variable by its probability and add the products.

f(x) = 2 ( x² + 8x ) - 7

     = 2 [(x + 4)² - 4²] - 7

     = 2 (x + 4)² - 32 - 7

     = 2 (x + 4)² - 39

(x+4)² = x² + 2*x*4 + 4² = x² + 8x + 4²

it's why

x² + 8x = (x + 4)² - 4²

Answer:

y=2(x+4)^2−39

Step-by-step explanation:

Based on my calculation that´s the answer :-)

Answer: The cat's weight is 4.33 pounds

• The dog's weight is 17.32 pounds.

Step-by-step explanation:

Let the weight of the cat be represented by a.

Devi’s dog weighs 4 times as much as her cat. This can be written as:

= 4 × a

= 4a

Her dog also weighs 13 pounds more than the cat. This can be written as:

= a + 13

We then equate both equations. This will be:

4a = a + 13

4a - a = 13

3a = 13

a = 13/3

a = 4.33 pounds

The cats weight is 4.33 pounds

Since the dog's weight = 4a = 4 × 4.33 = 17.32 pounds

Answer:

y =  -2

Step-by-step explanation:

To find the answer, use property of inequality:

10-5y=20
Undo the +10, so - 10 to the other side
so,
-5y= 10, or -5xY.

so divide by -5 from both sides:

10/-5=-2
so, the remain of the equation is:
y = -2
which is the answer

Answer:

Step-by-step explanation:For any shape it’s always true that for volume

V

the surface area is:      =2‾‾‾√3

for some constant   depending on the shape. So to work out the surface area from the volume we just need to know the value of   for the shape in the question.

For a cube for example we have that  =6, assuming consistent units i.e.: unit 2 for area and unit 3

3

 for volume.

More generally if we have formula for both volume and surface area in terms of a particular one dimensional measurement  

d

 of the shape then we can always write these formula in the form:

=13

=12

for constants  constants   1  and  1

. Then we have:

=1‾‾‾√3

=1(1)2‾‾‾‾‾‾√3

=121‾‾‾√32‾‾‾√3

and therefore:

=121‾‾‾√3

For example for a sphere we have that   that  =42  and  =433 and therefore:

=4(43)2‾‾‾‾‾‾√3

=36‾‾‾‾√3

So if a particular sphere has volume   =8  then we can calculate its surface area to be:

=36‾‾‾‾√382‾‾√3=436‾‾‾‾√3 m2

Answer:

B & C are the correct answers

[tex]b. \: \: \frac{7 {}^{18} }{7 {}^{9} } \\ c. \: \: (7 {}^{3} ) {}^{3} \\ e. \: \: 7 {}^{4} .7 {}^{5} \\ \\ correct \: answers[/tex]

Thank you ☺️☺️

Answer:

A: vertical angles

B: corresponding angles theorem

C: transitive property

Step-by-step explanation:

Answer:

A: vertical angles

B: corresponding angles theorem

C: transitive property

Step-by-step explanation:

Answer:

Hm, okay.

Step-by-step explanation:

So, if the pizza cost $12.50, and the total money spent is $16.85, we must first subtract our money spent on pizza from the total amount spent.

$16.85 - $12.50 = $4.35

So, that means that John and his two friends spent $4.35 on 3 large drinks. But how do we figure out how much each individual drink cost?

We divide $4.35 by 3.

$4.35 / 3 = $1.45.

So, the amount of money spent on one large drink was $1.45.

Answer:

it should be 1571.19

Step-by-step explanation:

If you combine the you just need to add them using the amount under weekly 584+987.19= 1571.19 weekly

The given circle having two external tangents, according to circle

theorem, have the following values;

r² + 1.6² = (0.4 + r)²

(0.4 + r)² - (r² + 1.6²) = 0

0.8·r - 2.4 = 0

0.8·r = 2.4

r = 2.4 ÷ 0.8 = 3

y = 49°

From the two tangent angle theorem, we have;

m∠1 = ((82 + 98 + 82) - (360 - ((82 + 98 + 82)))) ÷ 2 = 82

According to circle theorems, angle at the center is twice angle

subtended at the circumference.

m∠2 = (360 - (82 + 98 + 82)) ÷ 2 = 49°

The length of the chord subtended by the arc x is equal to the length of

the chord subtended by 89°, which gives;

Learn more about circle theorems applications here:

https://brainly.com/question/16879446

Answer:

[tex]y=-\frac{3}{2}+2[/tex]

Step-by-step explanation:

First subtract 6 from both sides:

[tex]6x+4y=8[/tex]

-6            -6

New equation becomes:

[tex]4y-6=8[/tex]

Divide all by 4:

4     -6      8

---    ---      ---

4       4       4

[tex]y=-\frac{3}{2}+2[/tex]

Hence, the final answer is [tex]y=-\frac{3}{2}+2[/tex]

Answer:

A parrelogram is a shape with four sides (and something else I forgot).  That doesn't matter because a circle doesn't even have sides! Therefore, it's not a parallelogram.

Answer:

author link

annaking0830

Ambitious

14 answers

987 people helped

Answer:

0.5f - 17.77

Step-by-step explanation:

im pretty sure thats right im not 100% sure more like 80% sure but ya thats what i got hope its right :)

p.s i do khan too!!

Answer:

Answer:

author link

annaking0830

Ambitious

14 answers

987 people helped

Answer:

0.5f - 17.77

Step-by-step explanation:

im pretty sure thats right im not 100% sure more like 80% sure but ya thats what i got hope its right :)

Step-by-step explanation:

Answer:

f(-2) = 8

Step-by-step explanation:

Graph y = f(x)

Find value of f(-2)

when f(x) = f(-2)

Here we are looking for the value of y when x = -2

From the graph when x = -2 then y = 8

Therefore, f(-2) = 8

Answer:

A)Deductive

B)Deductive

C)Inductive

D) Deductive

Step-by-step explanation:

Answer:

$3.11

Step-by-step explanation:

you have to subtract 24.10 from 22.99

Answer:

First let's find the increase of the original price to it's new price;

24.10 - 22.99 = 1.11, there was a $1.11 increase.

Though, we need to find the percentage, using the formula:-

Changed price       100

____________ x _____ (100%)

Original amount        1

Our changed price was 1.11, and our original price was 22.99.

 1.11          100

_____ x _____ = 4.828 which rounds to 4.83%

22.99        1

Answer:

True

Step-by-step explanation:

A reflecrion always is the sam edustance because then it makes it look like they are reflecting each other.

Answer:

input the formula of acceleration and the the answer will be

8.928571429

Answer:

(-1,-1)

Step-by-step explanation:

Because you're translating something 3 units to the left, then you are moving along the x-axis, so you will subtract 3 from 2.

Answer:

482.84

Step-by-step explanation:

[tex]A = 2 ( 1 +\sqrt{2} ) a^{2} = 2 multiply ( 1 +\sqrt{2} ) multiply 10^{2} = 482.84271[/tex]

I am doing this problem assuming that you mean to solve for m and n as x and y do not exist in this system of equations.

-4m+2n=6

-4m+n=8

We can see that the coefficient of x for both equations are -4; therefore, elimination with subtraction is possible.

First equation - second equation

n=-2

Then substitude back in to solve for m

-4m+(-2)=8

4m=10

m=5/2

Therefore the answer is

n= - 2

m= 5/2

I hope this helped and if you have any questions please ask.

Answer:

the total receipt for admission is 1065.75? or just 1065? please tell me so I can help you T_T

Answer:  see below

Step-by-step explanation:

#5 - 7: Domain are the x-values and Range are the y-values.

5) Coordinates are: (-2, 3), (0, 3), (2, 3), (4, 3)

   Domain: x = {3}         Range: y = {-2, 0, 2, 4}

6) All points on the curve between -4 and 2 (x-values) & 3 and 6 (y-values). Endpoints are included.

Domain: -4 ≤ x ≤ 2         Range: 3 ≤ y ≤ 6

7) All points on the curve between 2 and 7 (x-values) & 1 and 6 (y-values). Endpoints are not included.

Domain: 2 < x < 7         Range: 1 < y < 6

#8 - 11: Choose points for x. Plug them into the equation to solve for y.

To graph the equation, plot the points and connect the dots.

8)                  x         y = x

                   -2             -2

                    -1             -1

                     0             0

                     1              1

                     2             2

9)                  x         y = 2x+1

                   -2             2(-2)+1 = -3

                    -1             2(-1)+1 =  -1

                     0            2(-0)+1 =  1

                     1             2(1)+1 =   3

                     2            2(2)+1 =  5

Note:

You are allowed a maximum of 3 questions. I answered 5 questions. If you need help with the rest of your homework, you will need to create another post.

Answer:

2.05 inches

Step-by-step explanation:

V = 4/3 x πr³

36=4πr³/3

36x3= 4πr³

108= 4πr³

108/4 = πr³

27= πr^3

27/π =r³

r=

[tex] \sqrt[3]{27 \div \pi} [/tex]

r= 2.048in

round off to 2.05in

PROOF

V = 4÷3 x πr³

V= 4/3 x π(2.05)³

V=4/3 x π8.6

V=4×π×8.6/3

V=108/3

V=36in³

Therefore: radius= 2.05 inches