3(x^2-1) + 4(x^2 - 3) = 13

solve for x

Answers

Answer 1

Answer:

x=2, x=-2

Step-by-step explanation:

3x²-3+4x²-12=13

7x²=13+12+3

7x²=28

x²=4

x=-2

x=2

Answer 2
X =-2 should bring the correct answer

Related Questions

if it takes Anderson 4 minutes to swim 8 laps how many laps per minute is that?​

Answers

Two laps per minute

Answer:

2 laps per minute

Step-by-step explanation:

4/4= 1(minute)

8/4= 2(laps)

Therefore, it is 2 laps per minute

PLEASE HELPPP ILL DO ANYTHING PLEASE

Answers

Answer:

7 2/3

Step-by-step explanation:

We can divide 23/3 which teh closest whhole number is 7 and we have a remainder of 2. So 7 2/3

Answer: Hello! Your answer should be 7 2/3, hope this helps

Step-by-step explanation:

8. Una receta para hacer dulce de membrillo indica que la cantidad de fruta debe
ser una vez y media la cantidad de azúcar. Contesta.
a) Si se usan 2 kg de membrillo, ¿cuántos kilogramos de azúcar se necesitan?​

Answers

Answer:

1.67 kilogramos de azúcar

passes through (-1, -5) and (2, 6)

Answers

Answer:

[tex]y = \frac{11}{3}x + -\frac{4}{3}[/tex]

Step-by-step explanation:

[tex]y = mx + b\\m = \frac{-5 - 6}{-1 - 2} = \frac{-11}{-3} = \frac{11}{3} \\\\y = \frac{11}{3}x + b\\6 = \frac{11}{3}(2) + b\\6 = \frac{22}{3} + b \\6 - \frac{22}{3} = b \\b = -\frac{4}{3}\\\\y = \frac{11}{3}x + -\frac{4}{3}[/tex]

PLS HELP I HAVE TO DO THIS BY TONIGHTT

Alicia planted 45 tulip bulbs last year. This year she plans to plant 27 bulbs. Find the percent decrease in thenumber of tulip bulbs.

Answers

I got you !

Step-by-step explanation:

45 bulbs planted in first year.

65 bulbs the next year.

increase = 20 bulbs

Number of increase of planted tulip bulb is N = 65 - 45 = 20

( 20/45)  x 100% = 44.4 % to the nearest tenths

C + 4 = -8
Choose
This is a required question

Answers

Subtract 4 from both sides
C = -12

Answer:

c=-12

Step-by-step explanation:

Isabel’s class has collected 90 cans in a food drive. They plan to sort the cans into n bags, with an equal number of cans in each bag. Write an expression to show how many cans there will be in each bag.

Answers

Answer:

90/n

Step-by-step explanation:

There are 90 cans, and each bag MUST have an equal amount of cans, so if we had, let's say 2 bags, then there would be 45 bags. We got this by doing 90/2. 2 being n, the expression would be 90/n.

Which equation shows how (-10,8) can be used to write the equation of this line in point-slope from?

Answers

Options :

y – 8 = –0.15(x – 10)

y + 8 = –0.15(x – 10)

y – 8 = –0.2(x + 10)

y + 8 = –0.2(x – 10)

Answer:

y – 8 = –0.2(x + 10)

Step-by-step explanation:

(-10, 8)

General equation in point - slope form:

y - y1 = m(x - x1)

m = slope

Given the points : ( - 10, 8)

x1= - 10 ; y1 = 8

y - y1 = m(x - x1)

Substitute the values of x and y into the equation :

y - 8 = m(x - - 10)

y - 8 = m(x + 10)

The best option which fits is :

y – 8 = –0.2(x + 10)

BAnswer:

Step-by-step explanation:

Turtle

2,5,10,17 whats the next number in the pattern?

Answers

The next number in the sequence is 26
2,5,10,17,(26) I think-

PLEASE HELP ME!!! WILL GIVE BRAINLIEST!! TELL ME IF IM CORRECT!!

Answers

Answer

x=0,5

Step-by-step explanation:

[PLEASE HELP! DUE IN 3 HOURS!]
In order to help her save money for college, Latasha's grandparents deposited $10,000 into a savings account five years ago. Latasha has not made any withdrawals or deposits since then. The interest rate on the savings account is 3.75% each year.
Using simple interest, how much interest has accrued in Latasha's savings account?

What is the total amount in Latasha's savings account?

Answers

The total amount in her savings account is 12,058.78

A line passes through the points (-4,-1) and (4,3) a second line passes through the points (-2,-2) and (2,6) at what point do the two lines intersect

Answers

Answer:10

Step-by-step explanation:

What equation represents the slope intercept form of the line below Y intercept =(0,-2) slope = 2/3

Answers

Answer: [tex]y = \frac{2}{3} x - 2[/tex]

Step-by-step explanation:

The slope intercept form is y = mx + b

Where m is our slope and b is our y-intercept

We're given a slope of 2/3

We're given a y-intercept of -2

Substituting into y = mx + b gives

[tex]y = \frac{2}{3} x - 2[/tex]

Answer:

y = (2/3)x - 2

Step-by-step explanation:

Use the slope-intercept form y = mx + b.  Here b = -2 and m = 2/3.  Making these replacements, we get:

y = (2/3)x - 2

Complete this sentence: The sign of a positive number divided by a negative number is always ____________________.

Answers

Answer:

Step-by-step explanation:

Negative

If you drove 95 miles in 2 hours, how long will it take you to drive 415 miles at the same speed?

Answers

Answer:

4 hours (3.46)

Step-by-step explanation:

What is the answer to this problem?

Answers

Answer:

A

Step-by-step explanation:

it's easy, just have to look at the problem

3(3v-5) = 39
Simplify your answer as much as possible.

Answers

Answer:

v = 6

Step-by-step explanation:

Given

3(3v-5) = 39

So,

3v - 5 = 39 / 3

=> 3v - 5 = 13

=> 3v = 13 + 5

=> 3v = 18

=> v = 18 / 3

=> v = 6

#HopeItHelps

Answer:

V=6

Step-by-step explanation:

Hope this helped! :)

Simplifying

3(3v + -5) = 39

Reorder the terms:

3(-5 + 3v) = 39

(-5 * 3 + 3v * 3) = 39

(-15 + 9v) = 39

Solving

-15 + 9v = 39

Solving for variable 'v'.

Move all terms containing v to the left, all other terms to the right.

Add '15' to each side of the equation.

-15 + 15 + 9v = 39 + 15

Combine like terms: -15 + 15 = 0

0 + 9v = 39 + 15

9v = 39 + 15

Combine like terms: 39 + 15 = 54

9v = 54

Divide each side by '9'.

v = 6

Simplifying

v = 6

2 1/2t = 11
what is t​

Answers

2.5t = 11
Then you divide both sides by 2.5
t =11/2.5
t = 4.4

HELP PLZ!
proerties of Transformations
In the pre-image of the parallelogram, the slope of AD is
--3 and the slope of BC is -3. The image is translated
down 7 units and then reflected over the y-axis,
The slope of A"D" is
The slope of B"C"is
What can you determine about the line segments A"D"
and B"C"?
A"
D"

Answers

Answer:

1... 3

2...3

3...parallel

Step-by-step explanation:

HI I NEED HELP WITH THIS!!! SOMEONE ANSWER ASAP PLS

Answers

10
the hypotenuse is the largest side
so out of 6,8,10
10 is the largest

2.) Write the standard number 0.00007396
in scientific notation.

A 7.396 x 10-3
B 7.396 x 10-7
C 7.396 x 10-4
D7.396 x 10-5

Answers

Answer:

7.396 × 10-5

Step-by-step explanation:

To convert 0.00007396 into scientific notation, follow these steps:

Move the decimal 5 times to right in the number so that the resulting number, m = 7.396, is greater than or equal to 1 but less than 10

Since we moved the decimal to the right the exponent n is negative

n = -5

Write in the scientific notation form, m × 10n

= 7.396 × 10-5

Answer:D

0.00007395999999999999 7.396x10-5 7.396e-5 7.396 x 10-5

What percent of 70 is 84?
% of 70 is 84.

Answers

Answer:

120

Step-by-step explanation:

Just did this

Answer:

ig 174

Step-by-step explanation:

-2x-y=0
-6x+y=10

What is my solution for this ? (Eliminations)

Answers

I hope is correct

-5/4,
5/2

How to solve 3 3/5 - 2/3?

Answers

Conversion a mixed number 3 3/
5
to a improper fraction: 3 3/5 = 3 3/
5
= 3 · 5 + 3/
5
= 15 + 3/
5
= 18/
5


To find new numerator:
a) Multiply the whole number 3 by the denominator 5. Whole number 3 equally 3 * 5/
5
= 15/
5

b) Add the answer from previous step 15 to the numerator 3. New numerator is 15 + 3 = 18
c) Write a previous answer (new numerator 18) over the denominator 5.

Three and three fifths is eighteen fifths
Subtract: 18/
5
- 2/
3
= 18 · 3/
5 · 3
- 2 · 5/
3 · 5
= 54/
15
- 10/
15
= 54 - 10/
15
= 44/
15

For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of the both denominators - LCM(5, 3) = 15. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 5 × 3 = 15. In the next intermediate step the fraction result cannot be further simplified by canceling.
In words - eighteen fifths minus two thirds = forty-four fifteenths.

The value of the expression 3 ³/₅ - 2/3 in mixed fraction number will be 2 ¹⁴/₁₅.

What is Algebra?

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

The expression is given below.

⇒ 3 ³/₅ - 2/3

Convert the mixed fraction number into a fraction number. Then we have

⇒ 3 ³/₅

⇒ 18 / 5

Then the expression is written as,

⇒ 3 ³/₅ - 2/3

⇒ 18/5 - 2/3

⇒ (18 x 3 - 2 x 5) / 15

⇒ (54 - 10) / 15

⇒ 44 / 15

⇒ 2 ¹⁴/₁₅

The worth of the articulation 3 ³/₅ - 2/3 in the blended part number will be 2 ¹⁴/₁₅.

More about the Algebra link is given below.

https://brainly.com/question/953809

#SPJ2

HURRRYYYY

Evaluate the following expression: 7 + 3b + 4b use a=3 and b=5

Answers

Answer:

222222222222224.705876

Answer:

42

Step-by-step explanation:

You would substitute B where is needs to go, 7 + 3(5) + 4(5). First multiply 3 x 5 to get 15, and then multiply 4 x 5 to get 20, 7 + 15 + 20. 7 + 15 = 22 + 20 = 42. I hope this helps.

65 points! can someone help me understand this problem

Answers

Answer:

117

Step-by-step explanation:

It would be angle 117, because angle V and angle O are the same size and shape.

ASAP. Triangle ABC has angle measures as shown. complete sentences
(a) What is the value of x? Complete sentence. Show your work.
(b) What is the measure of each angle? Do the 3 angles add to 180 degrees? Show your work

Answers

In a triangle, the three angles ALWAYS add up to 180°

x + (6x + 10) + (x + 2) = 180

8x + 12 = 180

8x = 168

x = 21

To calculate the measure of each angle, substitute x in:

Angle A: 21

Angle B: 6(21)+10

Angle C: 21 + 2

Do the angles add up to 180 degrees? Just add the answer for A B and C and see if the sum is 180. It should be 180, if it isn't something is wrong with the calculation.

Which is the best estimate for the sum 2/9 +10/11? I need this now please helpppppp! Thxx -UrLocalDummy

Answers

Answer:

The best estimate is 0+1=0

Step-by-step explanation:

estimate

2/9 < 1/2 and close to 0 so 2 /9 = 0

10/11 < 1 but close to 1 so 10 /11 = 1

so it's 0 + 1 = 1

Hope it helps!

What's do you think that is delaying the development of African countries?​

Answers

Answer:

Poverty in Africa is caused by corruption and poor governance, poor land utilisation and land tenure system, civil wars and unending political conflicts, poor infrastructure, diseases and poor health facilities, the World Bank and IMF policies, among others.

Determine the value of x to form equivalent fractions 4/5 = x/30
4
24
5
10

Answers

the answer to this is 24
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