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Art [367]
3 years ago
10

3x^2+5x-28=0 solve this for me please

Mathematics
1 answer:
jok3333 [9.3K]3 years ago
8 0

Answer:

x= 7/3

x=-4

Step-by-step explanation:

Use the quadratic formula

a= 3, b=5, c=-28

-5± \sqrt{5^2-4*3(-28)}

x= _________________

              2.3

Simplfy

x=\frac{-5+19}{6} \\x=\frac{-5-19}{6}

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A camp program charges a registration fee and a daily amount. The total bill for 12 days is $338. The total bill for 19 days is
Artyom0805 [142]

The charge for 30 days will be $720 and for 22 numbers of days of people can attend the camp.

<h3>How to form an equation?</h3>

Determine the known quantities and designate the unknown quantity as a variable while trying to set up or construct a linear equation to fit a real-world application.

In other words, an equation is a set of variables that are constrained through a situation or case.

Given, the cost of the camp program

$338 → 12 days

And,

$506 → 19 days

Slope = (506-338)/(19-12)

Slope = 24

So, the cost per day will be 24

So equation will be

y = 24x

Now,

The charge is for 30 days ⇒

y = 24 (30)

y = $720

And

Number of days of camp could someone attend with a budget of $530⇒

530 = 24x

x = 22.08

Since day could not be a decimal quantity so it will be 22.

Hence "The charge for 30 days will be $720 and for 22 numbers of days of people can attend the camp".

For more about the equation,

brainly.com/question/10413253

#SPJ1

4 0
2 years ago
Pls I really need help with this question!!!!
pav-90 [236]
Answer: 43.6 (Rounded to the tenth)

Explanation: Use the method of: SOH CAH TOA.
Using TOA, T = Tangent.

tan(71) = x/15. Using the butterfly method you can just do the following equation:

15 tan(71) = 43.56 (Rounded to tenth) —> 43.6
4 0
2 years ago
Emma was about to finish grocery shopping when she noticed that cans of soup were on sale. Her total bill for groceries would be
Alinara [238K]

Answer:

3rd option: B(C)= 1.79C +86.03

Step-by-step explanation:

Total bill

= cost of cans(number of cans) +cost of other groceries

Let the cost of other groceries be G, and the cost of cans be X.

Given that number of cans= C,

Total bill= XC +G

If 2 cans were purchased,

2X+G= 89.61 -----(1)

If 5 cans were purchased,

5X +G= 94.98 -----(2)

(2) -(1):

(5X +G) -(2X +G)= 94.98 -89.61

5X +G -2x -G= 5.37

3X= 5.37

X= 5.37 ÷3 <em>(</em><em>÷</em><em>3</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>

X= 1.79

Subst. X= 1.79 into (1):

2(1.79) +G= 89.61

3.58 +G= 89.61

G= 89.61 -3.58 <em>(</em><em>-3.58</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em><em>)</em>

G= 86.03 <em>(</em><em>simplify</em><em>)</em>

Total bill

= XC +G

= 1.79C +86.03

Thus, the function is B(C)= 1.79C +86.03.

3 0
3 years ago
Evaluate 4y-3 for y=1
Neko [114]

Answer:

1

Step-by-step explanation:

4(1)-3=?

4-3=1

8 0
3 years ago
Read 2 more answers
Luna Park in Coney Island charges $12 for entry and $2 per ride. Ariana visits the park and goes on 4 rides. How much money did
Debora [2.8K]
Y = 2x + 12
2(4) + 12 = 8 + 12 = 20
She spends $20
5 0
2 years ago
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