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3 years ago

(2x−5)(2x−1) delta math

Mathematics

2 answers:

anyanavicka [17]3 years ago

5 0

4x^2 - 12x + 5

Hope this helped :)

asambeis [7]3 years ago

4 0

Answer:

<h2>I think this answer helps you.</h2>

Step-by-step explanation:

<h2> I hoped this helpful </h2>

<h2> Thank you </h2>

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PLEASE DON'T WASTE MY POINTS!! It's middle school math so it should be easy. If my points aren't wasted then I'll give away 200

inessss [21]

Answer:

to serve hot chocolate to 14 people, you need:

7/6 cups boiling water

12.25 cups milk

2 5/8 teaspoons vanilla

7/4 half & half cream

To serve cookies to 14 people you need:

2.4 (rounded) cups flour

7/8 teaspoon baking soda

7/16 teaspoon baking powder

7/8 cup butter

21/16 cups white sugar

Step-by-step explanation:

The regular recipe for hot chocolate serves 4 people. But 14 are being served; 14 is 3.5 times as much as 4, so multiply the measurements by 3.5.

The recipe for cookies makes 16 servings of 3 cookies (4 dozen total), so you must use slightly smaller quantities. 14 is 7/8 as much as 16, so just multiply the measurements by 7/8.

8 0

3 years ago

Read 2 more answers

Marcus walks 9 miles in 2 hours. At what unit rate does Marcus walk.

Sonja [21]

Answer:

He walks 4.5 miles per hour

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Suppose astronomers built a 50-meter telescope. how much greater would its light-collecting area be than that of the 10-meter ke

drek231 [11]

Answer: Its light-collecting area would be 25 times greater than that of the 10-meter keck telescope.

Step-by-step explanation:

1. To solve this problem you must apply the formula for calculate the area of a circle, which is shown below:

$A=r^{2}\pi$

Where<em> r</em> is the radius of the circle.

2. The diameter of a circle is:

$D=\frac{r}{2}$

Where <em>r</em> is the radius of the circle.

3. Therefore, keeping this on mind, you have that the light-collecting area of a 50-meter keck telescope is:

$A_1=(\frac{50m}{2})^{2}\pi=1963,49m^{2}$

4. And the light-collecting area of a 10-meter keck telescope is:

$A_2=(\frac{10m}{2})^{2}\pi=78.53m^{2}$

5. Divide $A_1$ by $A_2$ , then:

$\frac{1963.49m^{2}}{78.53m^{2}}=25$

6. Therefore, its light-collecting area would be 25 times greater than that of the 10-meter keck telescope.

4 0

4 years ago

in the past year tom watched 4 movies that he thought were very good. he watched 40 movies over the whole year. Of the movies he

balandron [24]

10% of the movies, because 100/40 is 2.5 so you would do 4 x 2.5 which equals 10. AKA
So if you’re trying to change it to x/100, you would do cross division and get 10/100 which equals 10%

5 0

3 years ago

Read 2 more answers

Julio is ordering books from BestBooks for his reading club. The table shows Julio's total cost of the book order, Including the

timama [110]

Answer:

Shipping Fee = $ 6

Step-by-step explanation:

The complete question and the table is as follows :

Given - Julio is ordering books from Best Books for his reading club. The table shows Julio's total cost of the book order, Including the shipping fee for each order. Best Books charges the same shipping fee for every book order.

To find - How much is the shipping fee?

Proof -

We know that,

Total Cost = (Number of books buy)(Cost of 1 book) + Shipping Fee

Let us Assume that,

Cost of 1 book = x

Shipping Fee = y

So,

From the table, we get

21 = 5x + y ..........(1)

36 = 10x + y ..........(2)

51 = 15x + y ..........(3)

66 = 20x + y ..........(4)

From equation (1), we get

y = 21 - 5x

Put the value of y in equation (2), we get

36 = 10x + 21 - 5x

⇒36 = 5x + 21

⇒5x = 36 - 21

⇒5x = 15

⇒x = $\frac{15}{5}$ = 3

∴ we get

x = 3

Put the value of x , we get

y = 21 - 5(3)

= 21 - 15

= 6

⇒y = 6

SO, we get

x = 3

y = 6

Verify the 4 Equations :

21 = 5x + y ..........(1)

21 = 5(3) + 6

= 15 + 6

= 21

⇒21 = 21

Verified

36 = 10x + y ..........(2)

36 = 10(3) + 6

= 30 + 6

= 36

⇒36 = 36

Verified

51 = 15x + y ..........(3)

51 = 15(3) + 6

= 45 + 6

= 51

⇒51 = 51

Verified

66 = 20x + y ..........(4)

66 = 20(3) + 6

= 60 + 6

= 66

⇒66 = 66

Verified

So, we get

Cost of 1 book = x = $ 3

Shipping Fee = y = $ 6

7 0

3 years ago