Solve equation 3x^2-4x=7 by completing square

Answers

Answer 1

Step-by-step explanation:

3x2-4x-7=0(3x-7)(x+1)=03x-7=0 and x+1=0x=7/3 and x=-1


Related Questions

Pierre had $42 before he paid his club dues. Evaluate the expression 42 − d for d = 25 to find how much money Pierre had left after he spent $25 on dues

Answers

Answer:Pierre has $17 left

Step-by-step explanation:

Amount of money before dues = $42

according to the expression 42-d, d represents dues= $25

Amount left = Amount of money before dues - Amount of dues

                  = $42- $25

                  =$17

Pierre has $17 left after he spent $25 on dues.

There are 96 girls and 72 boys who want to participate in 6th grade intramurals .If each team has the same number of girls and the same number of boys,How many boys and girls will be on each team?

Answers

Answer:

by taking Hcf of 96 and 72 we get 4 so each team have 4

'24' teams can be made with each team having 4 girls and 3 boys.

Given that,

No. of girls = 96

No. of boys = 72

Since the number of teams is not given, we will find by finding out the GCF(Greatest Common factor) of 96 and 72.

96 = 2 * 2 * 2 * 2 * 2 * 3

72 = 2 * 2 * 2 * 3 * 3

GCF = 2 * 2 * 2 * 3 = 24

Thus, a maximum of 24 teams can be formed. The number of girls and boys in each of these teams would be:

No. of girls in each team = Total girls/no. of teams

= 96/24

= 4 girls

No. of boys in each team = Total boys/no. of teams

= 72/24

= 3 boys

Thus, each team will have 4 girls and 3 boys.

Learn more about 'Greatest Common factor' here:

brainly.com/question/1983426

Which polynomial is in standard form?

Answers

Answer:

The image is black

Step-by-step explanation:

Comment on this answer and edit the image. I will then tell you what the answer is.

Can somebody help me with this. 35 points! :)))))

Answers

HAIIII!!!! Your best option is C which shows 40 degrees!! I wish you best of luck

Steal Some Points!!!!!

Answers

Answer:

Thanks ! :)

Step-by-step explanation:

Answer:

Uselesas fact!

Step-by-step explanation:

cotton candy was created by a dentist

Mathew used his computer for 2 1/8 hours in Tuesday evening and for 2 1/4 hours in Wednesday evening. Which is the best estimate of the time Mathew used his computer on Tuesday and Wednesday evenings

Answers

Answer:

About 4 hours. When you add the numbers together, you get

2 1/8 + 2 1/4 = 35/8 = 4 3/8 = 4.375

Step-by-step explanation:

Since the answer is not greater than 4.5, you round down to 4. If the answer was greater than 4.5, you would have rounded up to 5.

4x-7y=-8 and 3x+2y=-6 solve for x and y

Answers

Step-by-step explanation:

4x-7y= -8

or, 4x= 7y-8

or, x = 7y-8 ...........(i)

4

3x+ 2y =-6

or, 3x= -(2y+6)

or, x= -(2y+6) ........... (ii)

3

from (i) and (ii),

7y-8 = -(2y+6)

4 3

or, 21y-24 = -8y-24

or,

y =

then , Let's put the value of y in (i) or (ii)

x =

sorry I'm tired

so, i can't complete this

please help lol
“the opposite of a positive number is always zero,positive or negative which one is it!

Answers

Answer:

the opposite of a positive number is always negative

Determine whether the relation is a function Explain.
Helpp

Answers

Answer:

8. Not a function, the first three are of the same pattern but not the last two

9. Not a function, each input should have only 1 output or two inputs could have one output.

Jack needs to save $598 to buy a video game system. He is able to save $26 per week. How many weeks will it take till he can buy the video game?

Answers

Answer:

23 weeks

Step-by-step explanation:

1. 598/26 = 23

2. 23 weeks

Question 3
1
Marcus wants to move triangle PQR in such a way that vertex P moved from the point (-2,5)
to P' (3, -3). Which of the following algebraic representations matches this translation?
A. (x,y) → +5,y + 8)
B. (x,y) → (x - 5,y - 8)
C. (x,y) → (x - 5, y + 8)
D. (x,y) → (x +5,y - 8)

Answers

D. (x, y) —> (x+5, y - 8)

The slope of the line that passes through the point (2,4) and (3, 8) is

Answers

Slope= 4
This is also called “m” in the form of y=mx+b

Find the value of the expression 3.28x –x2 for x =2.28

Answers

Answer:

2.9184

Step-by-step explanation:

i hope this is correct i think it is..

c:

What is the value of cos if the terminal side is the line 3x - 4y = 0, x < 0
4/5
3/5
-4/5
-3/5

Answers

eheheheheheheheheheh

24/80 expressed as percent rounded to the nearest whole number is?

Answers

Answer:

0.3

Step-by-step explanation:

3/10

3x10^-1

24 is 30% of 80, so 30%

Nth term of 19, 16, ? , ? , 7,

Answers

19,16,13,10,7
Find the latter which is -3 each time

The Sluggers go out for pizza after a game. Five large pizzas plus three medium pizzas together have 110 slices. Two large pizzas plus nine medium pizzas have 122 slices. How many slices are in a large pizza?

Answers

hi the call you have a good day bye bye the call

25 coins for someone who can answer these for me fast i need the help because i have work for other classes.

Answers

Answer:

1. 5%

2. 37.5% decrease

Part A
Joseph runs 2 1/2 miles on Monday. Each day after that, he runs the same 1 1/3 mile route every morning. His goal is to run at least 6 miles
by the end of the week. Which inequality represents the least number of days after Monday that Joseph needs to run to reach his goal?

Answers

Answer:

The answer is C

Number of days= 21/8

Step-by-step explanation:

The inequality to represent the given situation is [tex]2\frac{1}{2}+1\frac{1}{3} \le6[/tex]. Therefore, option B is the correct answer.

What are inequalities?

Inequalities are the mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.

Given that, Joseph runs [tex]2\frac{1}{2}[/tex] miles on Monday. Each day after that, he runs the same [tex]1\frac{1}{3}[/tex] mile route every morning.

Let the number of days be x.

Here, the inequality is

[tex]2\frac{1}{2}+1\frac{1}{3} \le6[/tex]

Therefore, option B is the correct answer.

To learn more about the inequalities visit:

https://brainly.com/question/20383699.

#SPJ2

what is the equation of the line in slope-inr except form.write your answer using integers proper fractions and improper fractions in simplest form ​

Answers

Answer:

Figure it out yourself loser

Step-by-step explanation:

Three students sit in the first row. In the second row, 3 students sit behind each of those students, and so on. Write an expression with exponents to show how many students sit in the third row? How many total students are seated?

Please help, I don't understand this. You get 65 points!

Answers

Answer:

15

Step-by-step explanation:

Dont need an explanation really, but if there are 5 rows, with 3 each in them, all you need to do is 3x5.

15.

The graph of y= x^2 +4x +3 is shown
work out a and b please

Answers

Answer:

A.) i think it's (-2, -1)

B.) ?

Step-by-step explanation:

I am very sorry if they are wrong....i don't know B..sorry

Answer:

b = (-1,0) (-3,0)

Step-by-step explanation:

A grocery store offers 10 gas points of gas for every $50 you spend on groceries. For every 10 gas points you earn, you get to take $0.10 off every gallon of gas you buy. Currently, gas is $3.25 per gallon. When Monica fills up her car, she usually puts around 12 gallons of gas in it. How much money must Monica spend at the grocery store to fill up her car for less than $35.00?

Answers

Answer: $2,000

Step-by-step explanation:

Gas is $3.25 per gallon. If Monica needs 12 gallons, cost would be:

= 12 * 3.25

= $39

If she wants to fill up for less than $35, she will have to earn the difference in points:

= 39 - 35

= $4

One can get $0.10 off for every $50 spent. The number of 10 cents in $4 is:

= 4 / 0.1

= 40

Monica would therefore have to spend:

= 50 * 40

= $2,000

Rewriting expressions, image attached

Answers

Answer:

I am sorry I really don't know I will try to help if I get it sorry :((

Step-by-step explanation:

Mia's office recycled a total of 9 pounds of paper over 3 weeks. After 7 weeks, how many pounds of paper will Mia's office have recycled? Choices: 24 21 15 18

Answers

Answer:

After 7 weeks, Mia's office will have recycled 21 pounds.

Step-by-step explanation:

With the information provided, you can use a rule of three to find the pounds of paper that Mia's office will have recycled after 7 weeks given that they recycled 9 pounds over 3 weeks.

3 weeks  →  9 pounds

7 weeks  →         x

x=(7*9)/3

x=21

According this, the answer is that after 7 weeks, Mia's office will have recycled 21 pounds.

Alison bought 5 boxes of erasers,
Each box had 212 erasers. How
many erasers did she buy in all?

Answers

Answer:

1,060

Step-by-step explanation:

Each- Means multiplication.

You can add 212 - 5 times

212x5

Answer:

1060

Step-by-step explanation:

212 x 5 = 1060

212

x5

5x200=1000

5x10=50

5x2=10

1000+50+10=1060

GIVING 50 points
FIND THE VALUE OF X
PLEASE HELP WITH WORK AND STEPS SHOW THANK YOU

Answers

Answer:

Step-by-step explanation:

1. 10^2+7^2=x^2

x=sqrt(149)

2. 21^2-19^2=x^2

x=sqrt(80)

3. This is all pythagorean theorem busywork, a^2+b^2=c^2 where c is the hypotenuse of the triangle.  I think from my examples you should be able to figure the rest out.

what does arithmetic and algebra use the same​

Answers

Arithmetic is about computation of specific numbers. Algebra is about what is true in general for all numbers, all whole numbers, all integers, etc.

what is the slope intercept form of the line ? mark brainlest!

Answers

Step-by-step explanation:

y=x+1

I don’t know how to do this can somebody help please and quick !

Answers

Answer:

y = -3x + 19

Step-by-step explanation:

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