write a proportion and find the missing side lengths. show work!! 30 points.

Answer:

Are people actually expected to do this?

Step-by-step explanation:

Answer:

-2 y^2 + 6 y + 4

Step-by-step explanation:

Answer:

true  hope this helped

Step-by-step explanation:

Answer:

C) The y-intercept will always be the vertex.

Step-by-step explanation:

We have the quadratic function in the form:

[tex]f(x)=ax^2+bx+c[/tex]

And we want to determine the true statement when b = 0.

Let's go through each of the choices and examine its validity.

Choice A)

Recall that according to the quadratic formula, the roots of a function is given by:

[tex]\displaystyle x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}[/tex]

If b = 0, then we acquire:

[tex]\displaystyle x=\frac{-(0)\pm\sqrt{(0)^2-4ac}}{2a}=\pm\frac{\sqrt{-4ac}}{2a}[/tex]

As we can see, as long as the inside of the square root is positive, the graph will have x-intercepts. So, b equalling zero does not guarantee that the graph does not have any x-intercepts.

A is false.

Choice B)

A quadratic has a minimum if it curves upwards and a maximum if it curves downwards.

This is decided by the leading coefficient a. b does not affect whether a quadratic curves downwards or upwards.

B is false.

Choice C)

The vertex of a quadratic is given by:

[tex]\displaystyle \text{Vertex}=\left(-\frac{b}{2a}, f\left(-\frac{b}{2a}\right)\right)[/tex]

If b = 0, then the x-coordinate of the vertex is given by:

[tex]\displaystyle x=-\frac{(0)}{2a}=0[/tex]

Then the y-coordinate will be:

[tex]f(0)=a(0)^2+b(0)+c=c[/tex]

So, the vertex is (0, c).

This is also the y-intercept as, by definition, the y-intercept is the value when x = 0.

So, Choice C is the correct choice.

Choice D)

The axis of symmetry is the x-coordinate of the vertex. As we saw earlier, the x-coordinate of the vertex will always be:

[tex]\displaystyle x=-\frac{(0)}{2(a)}=0[/tex]

Zero is neither positive nor negative. Thus, D is false.

Answer:

The y-intercept will always be the vertex.

Step-by-step explanation:

its c

Answer:

125

Step-by-step explanation:

This can be simplified to sqrt(25) ^3

sqrt(25) is 5

          (5*5) = 25

5^3 = 225

          (5*5*5) = 125

Answer:

125

Step-by-step explanation:

[tex]\sqrt[2]{25^3} \\=25\sqrt[2]{25} \\=25*5\\=125[/tex]

Answer:

6cm squared

Step-by-step explanation:

1 x 2 = 2 cm

2 x 3 = 6 cm

6 cm squared

Answer:

Step-by-step explanation:

Given

Total no. of observation = 50

Given, No. of observations that told yes = 42

Therefore,

Probability of getting response as yes

[tex] = \frac{42}{50} [/tex]

[tex] = \frac{21}{25} [/tex]

In decimal form ,

= 0.84 (Ans)

Answer:

288$

Step-by-step explanation:

6 · 23 = 138$

138$ + 150$ = 288$

Answer:

[tex]y = - 5x + 4[/tex]

Step-by-step explanation:

You can plot the graph on online graphing calculator to check.

Brainliest please~

Their are two triangle possible.

1 ) With hypotenuse of length x.

2) With hypotenuse of length 12.

Solution :

Case : 1 )

Using Pythagoras theorem :

x² = 7² + 12²

x = √( 7² + 12²)

x = √( 49 + 144 )

x = √(193)

x = 13.89

Case : 2 )

Using Pythagoras theorem :

x² + 7² = 12²

x² = 144 - 49

x = √95

x = 9.75

Hence, this is the required solution.

Answer:

1. Create a three-dimensional figure net.

2. Determine the area of each net face.

3. To calculate the surface area of the cube, add the areas of all the net's faces.

Answer:

1. spends $80

2. Each garlic bread costs the same

3. Orders a pizza for 25.50 and two garlic breads

Step-by-step explanation:

Answer:

25 = x

Step-by-step explanation:

The angles are vertical angles and vertical angles are equal

5x+15 = 6x -10

Subtract 5x from each side

5x-5x+15 = 6x-5x -10

15 = x - 10

Add 10 to each side

15+10 = x-10+10

25 = x

Answer:

4374

Step-by-step explanation:

Since, we are given table for x and y values

and table for average rate of changes

we can see the pattern of average rate of change

average rate of change for 5 to 6 is three times average rate of change for 4 to 5

but we have to find

average rate of change for 7 to 8

so, using same pattern

average rate of change for 6 to 7 is three times average rate of change for 5 to 6

average rate of change for 7 to 8 is 3*3( average rate of change for 5 to 6)

so, we can plug value

average rate of change for 7 to 8 is 3*3*486

average rate of change for 7 to 8 is 4374

Answer:

thank you

Step-by-step explanation:

have a good day

Answer:

graph b represents a function.

Answer:

graph b

Step-by-step explanation:

Step-by-step explanation:

hope this will help you alot

if this really help you please votee or mark me as brinalist.

Thankyou

Answer:

circumference of the circle=2πr

30π=2πr

r =15

radius of the circle is 15 mm

area of the circle=πr²

=3.14×15²

=706.5 mm²

Answer:

It is C because on 12 I can see 3.

Step-by-step explanation:

Answer:

15 minutes

Step-by-step explanation:

The formula is

1/a + 1/b = 1/c to determine joint time  where a and b are the times alone and c is the time together

1/10 + 1/ 30 = 1/c

Multiply each side by 30c to clear the fractions

30c( 1/10 + 1/ 30) = 1/c * 30c

3c + c = 30

4c = 30

Divide by 4

4c/4 = 30/4

c = 7.5 minutes

This is the time for 50 pages

We want 100 pages, so multiply by 2

7.5 *2 = 15 minutes

Answer:

≈ 30 times

Step-by-step explanation:

The Cubs are projected to win 38 games next season and this is a 22.6% increase from past season.

Step 1 : Let's find 22.6% of 38.

= 8.588

Step 2 : Now, since we increased by this, we subtract.

38 - 8.588 = 29. 412

Of course you can't win only part of a game, so I'm going to say they won 30 times, because a little extra win never hurt anybody. :)

Hope this helps, please mark brainliest!

Answer:

18

Step-by-step explanation:

cause I took the test and I its right

Answer:

x=12

Step-by-step explanation:

Both Angles together have a 180 degrees, set your formula up as

180=(10x-20)+(6x+8)

180=10x+6x-20+8

180+20-8=16x

192=16x

192/16=x

12=x

Answer:

x = 12

Step-by-step explanation:

The two angles form a straight line so they add to 180

10x-20 + 6x+8 = 180

Combine like terms

16x -12 = 180

Add 12 to each side

16x-12+12=180+12

16x = 192

Divide each side by 16

16x/16 =192/16

x = 12

Answer:

271 prints.

Step-by-step explanation:

So to answer the question, we need to first write a formula to find the answer.

We know that the starting price per month is 6.95 dollars.

The full price is 17.79 dollars.

So we can start this off by writing:

17.79=6.95

Now, every time Jim prints, he charges 0.04 dollars. This will add to the orginal cost, which is 6.95. And remember this isnt a single payment, but a payment that varies depending on the amount of paper, p. So we can write this as:

17.79=6.95+0.04p

6.95 wont ever change, hense why it doesnt have a variable. 0.04 however, varies depending on the amount of paper, and thats why we included the variable p.

These two values combined make 17.79, hense why it is on the opposite side of the equals sign.

So, now we need to find how many papers, p, were printed.

To find this, lets just take our equation, and solve for P like an ordinary problem:

17.79=6.95+0.04p

So first off, lets subtract the 6.95 from both sides, because that iscolates the 0.04p, which contains the variable.

Now we have:

10.84=0.04p

Now, we could divide both sides by 0.04.

But remember, the whole point of doing this is to make 0.04p into 1p.

So another way of doing this is multiplying the 0.04 by 25, since 0.04*25=1.

So lets multiply both sides by 25:

10.84*25 is 271.

Since 10*25 is 250

And

.84*25 is 21.

So now we know:

271=1p

So 271 is your answer!

Hope this helps!

The equation that can be used to find the number of prints, p, is $17.79 = $6.95 + $0.04p and Jim ordered 271 prints last month.

An equation is an expression that shows the relationship between two or more numbers and variables.

We can write an equation to represent the total cost that Jim was charged by the website for last month's prints, p to represent the number of prints he ordered:

Total cost = Monthly fee + Cost per print x Number of prints

Using the values given in the problem:

$17.79 = $6.95 + $0.04p

To solve for p, one side of the equation. First, we can subtract $6.95 from both sides:

$10.84 = $0.04p

Then, we can divide both sides by $0.04:

p = 271

To learn more about equation click on;

brainly.com/question/31112129

#SPJ2

Answer:

102 mph

Step-by-step explanation:

Eliana travels at an average speed of 50 mph for 60 miles.

Without stopping, Eliana then travels 130 miles in 2.5 hours.

We calculate the speed here

Speed = Distance in miles /Time in hours

Speed = 130 miles/2.5 hours

= 52 miles per hour

Hence, her average speed for the entire journey is calculated as:

50 mph + 52 mph

= 102 mph

Answer

A.x=8

1/3x-2/3x=2

x-2=6

x=6x2

x=8

Answer:

[tex]h^2+6^2=10^2[/tex]

[tex]h^2+36=100[/tex]

[tex]h^2=100-36[/tex]

[tex]h^2=64[/tex]

[tex]h=8[/tex]

[tex]A=1/2 ~BH[/tex]

[tex]A=1/2(12)(8)[/tex]

[tex]A=48 ~units^2[/tex]

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

hope it helps...

have a great day!!

Answer:  48 square units

=============================================================

Explanation:

Draw a vertical line to cut the triangle into two equal parts. You'll get two right triangles.

The horizontal leg of one of those smaller triangles is 12/2 = 6 units. The hypotenuse is 10 units. Through the pythagorean theorem, you should find the vertical leg is 8 units.

We have a 6-8-10 right triangle.

The area of this smaller triangle is base*height/2 = 6*8/2 = 48/2 = 24 square units.

So the area of the larger triangle is 2*24 = 48 square units.