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dem82 [27]
2 years ago
10

What are the solutions to the equation 3x2 + 15x = 18?

Mathematics
1 answer:
jok3333 [9.3K]2 years ago
6 0

3x {}^{2}  + 15x = 18

<h2>Divide the entire thing by 3</h2>

x {}^{2}  + 5x = 6

x {}^{2}  + 5x - 6 = 0

<h2>You can find the roots by using the quadratic formula or by using the form x²-Sx+P</h2>

let \:  \alpha \:  and \: \beta  \: be \: the \: roots

<h2>Two numbers whose sum is -5 and product is -6</h2><h2>-6 and +1</h2>

<h2>Your answer is B</h2>

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4 1/5 + 2 5/6 = ? <br><br> 6 1/6 <br> 6 1/30 <br> 7 1/4 <br> 7 1/30
grigory [225]

Answer:

7 1/30

Step-by-step explanation:

4 1/5 + 2 5/6

Get a common denominator of 30

4 1/4 = 4 1/5*6/6 = 4 6/30

2 5/6 *5/5 = 2 25/30

4 6/30 + 2 25/30

6 31/30

Rewriting

6 30/30 + 1/30

6 + 1 + 1/30

7 1/30

6 0
3 years ago
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If anyone can answer my question please help :)
Yuki888 [10]
Since they are similar you need to start by making ratios for each pentagon.
1.8/2.4 is the first and x/3.6 is the second. Now set them equal to each other and cross multiply.
1.8 X
___ = ____

2.4 3.6

2.4x= 6.48 Now divide both sides by 2.4

2.4x= 6.48
___ ____

2.4 2.4

X= 2.7
8 0
3 years ago
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Calculate the monthly payment for a $2,500 loan at 9% annual interest for two years.
Svetach [21]
114.21


i used a loan calculator
4 0
4 years ago
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you are purchasing the ingredients for your first cooking project in culinary school. You are making a new salmon dish. Salmon c
iogann1982 [59]

Answer

$22

Step-by-step explanation:

This is the answer because if we take 3 2/3 into a mixed number, it would be 11/3. If you multiply 11 to 6, you would get 66 and divide it by 3, and get 22.

5 0
3 years ago
A monument in the shape of a square pyramid was built in a park.
True [87]

The least amount of money that should be budgeted to paint the monument is $1692.

<h3>Least amount of money that should be budgeted</h3>

First step

Using Pythagorean theorem to find the surface area

Since POR is a right triangle

Hence:

PO=20

BR=12

OR=12

PR=√20²+12²

PR=400+144

PR=544

Area of PBC=1/2×24×√544

Area of PBC=12√544

Lateral surface area=4×12√544

Lateral surface area=48√544

Lateral surface area=1119.54²ft

Second step

Since regular paint is  2 coats 200 sq. ft per gallon

Hence:

Number of gallons=1119.54×2/200

Number of gallons= 11.2 gallons

11.2×35= 392

1119.54/80=13 gallons

13×100 =1300

Last step

Least amount=392+1300

Least amount= $1692

Therefore the least amount of money that should be budgeted to paint the monument is $1692.

Learn more about budget least amount here:brainly.com/question/7068523

brainly.com/question/25294118

#SPJ1

8 0
2 years ago
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