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USPshnik [31]
2 years ago
5

Use the quadratic formula to solve x^2 + 3^x - 28 = 0

Mathematics
1 answer:
Mama L [17]2 years ago
3 0

Step-by-step explanation:

x^2 + 3x - 28 = 0

x^2 - 7x + 4x - 28 = 0

x(x-7) + 4(x-7) = 0

(x+4)(x-7)= 0

x+4=0 or x-7=0

x= -4 or x=7

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Please help 13 MATH PROBLEM
padilas [110]

Answer: The answer is 431/120 then you Simplify it and that would be

3 71/120  so the answer is F

Step-by-step explanation:

Hope this helps ya! Have a good day! :)

6 0
3 years ago
Read 2 more answers
5c) The scale of a map says that 4 cm represents 5 km. What is the actual
Maslowich

● Answer:

6.25 km

● Step-by-step explanation:

Hi there !

4 cm ........... 5 km

5 cm ........... x km

x = 5cm×5km/4cm

= 25km/4

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Good luck !

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25 POINTS!!!!Which of the following statements are true? Select all that apply.
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Answer:

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Step-by-step explanation:

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3 years ago
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An online shopping club has 10,000 members when it charges $7 per month for membership. For each $1 monthly
Sonja [21]

Answer:

The function that can be used in the online shopping club about its monthly revenue is:

R = -400x^{2} +7200x+70000

Step-by-step explanation:

First, we're gonna take into account the different values we have in the exercise:

  1. 10,000 members
  2. $7 per month for membership
  3. Loses of 400 members by each $1 monthly increase

How the variable x represents the price increase, we can do the formula below:

  • (10000 - 400x) * (7+x)

In this formula, we represent in the first part that by each 1 in the variable x, the total of members will be reduced in 400, in the second part, we mention that at the same time, the membership fee will be increased in the same value of x. Now we must simplify this function:

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We operate the values:

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Solve we can:

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And organize:

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At the end, how R represents the monthly revenue received by the club, we use that variable for our formula:

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2 years ago
A microwaveable cup-of-soup package needs to be constructed in the shape of cylinder to hold 250 cubic centimeters of soup. The
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Answer:

jheg

Step-by-step explanation:

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