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Alborosie
3 years ago
6

Complete the steps in solving the quadratic function 7x – 9 = 7x2 – 49x by completing the square. Fill in the blanks.

Mathematics
2 answers:
katovenus [111]3 years ago
8 0

Top one is 56

-9 +  <u>112 </u>= 7(x2 - 8x + <u>16 </u>)

PolarNik [594]3 years ago
8 0

Answer:

1 is -56 2 is 112 3 is 16

Step-by-step explanation:

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Can somebody please help me with the question below and please explain how to find the answer? plz, I'm studying for a test plzz
blagie [28]

Answer:

-10/9 < -2/3 < 4/6 < 6/5 < 5/4

(hope this helps!)

Step-by-step explanation:

3 0
3 years ago
a copy machine can print 810 copies every 9 minutes. A laser printer printed 1,350 copies. How long did it take to print?
Gre4nikov [31]

Answer:

15

Step-by-step explanation: You would think 15. 810 copies every 9, minutes. Nine divided by 810 equals 90. 90 copies every minute. 1,350 divided by 90 is fifteen. =fifteen.

5 0
3 years ago
Read 2 more answers
The probability, P, that a person responds to an advertisement can be modeled by the exponential function P = 1 – e^-0.047t. In
MA_775_DIABLO [31]
To solve this equation, start by noticing that you want to find t when P is 75%, or 0.75. Plug in 0.75 for P. Please see the attached screenshot for a step-by-step. The correct answer is 29.496 days.

EDIT 2: I actually was correct! You check the answer by substituting 29.496 for t in the original equation set equal to 0.75. It is 0.75. I had forgotten the negative sign when I checked.

5 0
3 years ago
6.
denpristay [2]

Answer:

15n=135

Step-by-step explanation:

first, you need to know how much of the total amount is the money needed for soccer balls, to find this you take the amount of a soccer ball and multiple it by the amount of people

14×15=210

then you subtract that from the total amount to get the amount spent on jerseys.

345-210=135

to get the amount of each jersey you take 135 and divide by the amount of people

135÷15=9

4 0
3 years ago
The ratio of forks to spoons in the cafeteria is 15:25. If the total
9966 [12]

Answer:

30 forks

Step-by-step explanation:

Let's start by simplifying the given ratio. Since both 15 and 25 are multiples of 5, we can divide the whole ratio by 5.

Forks: spoons

= 15: 25

= 3: 5

This means that forks take up 3 units of the total number of utensils, while the number of spoons is 5 units of the total number of utensils.

Number of forks= 3u

Number of spoons= 5u

Units shall be represented by the letter u from this point forth.

Now, we can form an equation using the total number of utensils in the cafeteria.

Assuming that the utensils in the cafeteria are only forks and spoons,

number of fork and spoons= 80

3u +5u= 80

8u= 80

Let's solve for u.

Divide by 8 on both sides:

1u= 80 ÷8

1u= 10

This means that 1 unit represents 10 utensils.

Substitute the value of u into the expression of the number of forks:

Number of forks

= 3u

= 3(10)

= 30

Thus, there are <u>30 forks</u> in the cafeteria.

8 0
3 years ago
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