Mathematics High School

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

PLZ HELP ME WITH THIS?!?

Answers

Answer:

Hi, person.

Step-by-step explanation:

Step-by-step explanation:

first criss cross

then minus by 1 over 4

OR

find lcm of 3 6 4 and after you get it write the number out side let # be the lcm and let me show you #(2,5)&#(_1) and solve it

2x + 5y = -24
3x - 5y = 14
Solve by elimination
y and x

Answers

Answer:

x = -2

y = -4

Step-by-step explanation:

The way systems of equations  work is that you have to substitute to solve for a variable *(only one of the 2 ways to figure this out)*

so, we will use addition property of equality in a form to add the two equations together, since +5y and -5y added together will cancel out.

that would leave

5x = -10

divide both sides by 5

x = -2

Now that we know x = -2, we can plug in -2 into one of the equations to find y.

2 ( -2)  + 5y = -24

-4 + 5y = -24

-4 + 4 + 5y = -24 + 4

5y = -20

y = -4

x = -2

y = -4

Several students in a class made the following statement. Decide whether you agree with the statement. If you disagree, change the statement to make it correct. A quadrilateral with congruent diagonals must be a rectangle. (ignore that one is already picked that was an accident)

Answers

Answer:

It's option c

Step-by-step explanation:

Examine the following tables of ordered pairs and identify which relations are functions.Select two that apply

Answers

Answer:

Step-by-step explanation: B

The tables of ordered pairs representing relations that are functions are: A and C.

What is a Function?

If a table of ordered pairs of a relation has each x-value relating to exactly one y-value, then the relation is a function.

Table B and D do not apply to this rule. Table A and C have each of its x-values paired with exactly one y-value.

Therefore, table A and C represent functions.

Learn more about functions on:

https://brainly.com/question/10439235

#SPJ2

Find m
Geometry help pls

Answers

Answer:

∠WXY=72°

Step-by-step explanation:

2X-2=70+X

2X-X=70+2

X=72° ⇒ ∠WXY=72°

Veronica cut a triangular piece of cookie cake with side lengths that measure 3.6 cm, 6 cm and 4.8cm.



Did Veronica cut out a right triangle?

Answers

Answer:3.6 + 4.8 > 6

Step-by-step explanation:

The answer is YES, the triangle that is cut down by Veronica is a right triangle.

What is a triangle?

The basic polygonal shape of a triangle has three sides & three interior angles. This is one of the fundamental shapes in geometry and is particularly associated. It has three connected vertices. Triangles can be divided into a variety of categories according to their sides and angles.

As per the given information in the question,

The lengths of the sides of the triangle are given as,

Let Base, b = 3.6 cm

Perpendicular, p = 4.8 cm

Hypotenuse, h = 6 cm

Now, use the equation of Pythagoras' theorem,

h² = p² + b²

6² = 4.8² + 3.6²

36 = 23.04 + 12.96

36 = 36

It satisfies Pythagoras' theorem, which means that it is a right triangle.

To know more about Triangle:

https://brainly.com/question/2773823

#SPJ2

Write an equation in slope-intercept form for a line that passes through points (-1, 2) and (5, -10)

Answers

The equation is y= -12/6x
So negative 12 over 6 x^^

2(7x-4) distributive property.​

Answers

Answer:

14x-8

Step-by-step explanation:

hope this help

Answer:

Other person is correct

Step-by-step explanation:

2(7x - 4)

Multiply 2 × 7x = 14x

Multiply 2 × 4 = 8

Put together to get 14x - 8

At Jonathan's school, there are 30 seventh graders participating in the school play. Of the students in the seventh grade, 60% are not participating in the school play. How many seventh graders at Jonathan's school are not participating in the school play?

Answers

Answer:

75

Step-by-step explanation:

If 30 students represent 40% of the class, we can divide 30 by .40 to get 75.

-4x+5 + -13x+39=180 angle measure

Answers

Step-by-step explanation:

−4x+5−13x+39=180

Step 1: Simplify both sides of the equation.

−4x+5−13x+39=180

−4x+5+−13x+39=180

(−4x+−13x)+(5+39)=180(Combine Like Terms)

−17x+44=180

−17x+44=180

Step 2: Subtract 44 from both sides.

−17x+44−44=180−44

−17x=136

Step 3: Divide both sides by -17.−17x

−17

=

136

−17

x=−8

Answer:

x=−8

akayla buys some tools at the local hardware store. Her total is $50 but she has a 15% off coupon. How much did she save with her coupon? Enter your answer to the nearest cent.

Answers

Answer:

$7.50

Step-by-step explanation:

$50 x .15 = $7.50

$7.50 estimated to nearest cent is $7.50

Batman took a bicycle trip. In all, he traveled 6 hours at a rate of 28 mph. What was his total distance ?

Answers

distance=speed x time
so it would be 28 x 6=168

Answer:

just multiply

Step-by-step explanation:

and ull get

168

My old account is h acked lol <3

Answers

..........Okay? Lol

Answer:

PUK me montoon are 8ii88iiii8

trigonometry help me for 25 points plz

Answers

Answer:

46

Step-by-step explanation:

Segment WX = 23 by the 30 60 90 triangle theorem which states that the longer leg is sqrt3 times the length of the shorter leg.

Segment XY = 26 by the 30 60 90 triangle theorem that states the hypotenuse is twice the length of the shorter leg

find the area:
look at pic

Answers

Answer:

15in

Step-by-step explanation:

1. What is the constant rate of change between x and y in the table below?
A. 3/2
B.2/3
C.-2/3
D.-3/2

Answers

The answer to the problem is C.-2/3

8, 12, 18, ... whats the 6th term.

Answers

Answer:

50

Step-by-step explanation:

Write the equation of the line of the line that passes through the point (3, -6) and a slope of 5

Answers

Answer:

y=5x-21

Step-by-step explanation:

subtract 491.67−25.86 HELP!!

Answers

Answer:

465.81

Step-by-step explanation:

nsxididjdjdisusjsj

The answer of the question is 465.81

A rectangle has a perimeter of 46 inches. The length of the rectangle is 7 inches. What is the rectangle width?

Answers

Answer:

W=16

Step-by-step explanation:

46=2(L+W)

46=2(7)+2(W)

46-14=2W

32/2=2W/2

W=16

Determine whether the lines are parallel, perpendicular, or neither.
y = 3x - 2
-3x + y = 8​

Answers

Answer:

they are parallels

Step-by-step explanation:

they have the same slope but different y intercepts so they are parallel

Answer:

Parallel

Step-by-step explanation:

First, you should put the second equation in slope-intercept form, it would be y=3x+8.

If two lines are parallel they will have the same slope. If two lines are perpendicular the slopes will be the negative reciprocals of each other. The slopes of these two lines are the same so they are parallel.

Add these expressions
(–45t + 53s) and (–3 – 75s + 2t)

Answers

Answer:

-43t - 22s - 3

Step-by-step explanation:

(–45t + 53s)+(–3 – 75s + 2t)

-45t + 53s - 3 - 75s + 2t

-45t + 2t +53s -75s -3

-43t - 22s - 3

Can someone answer this im so lost

Answers

Step-by-step explanation:

The first important details are given at the start, where the beginning amount of snow is 12 inches. This is a positive number.

Then, the next sentences tell us that the snow melts at a pace of 2 inches for an x number of days.

This can be represented by -2x because the word "melts" indicates a negative value.

From this, the equation can be made :)

6 ponds of candy cost $22.44 what is the cost of one pound?

Answers

$3.74 because you have to divide

Tanijah paid $4.00 for 5 organic peaches. How much did she pay per peach?

Answers

Answer:

80 cents i think if i did my math right

Step-by-step explanation:

80 times 5 is 400

Ms. Rios mowed

2

7

of her lawn. Her son mowed

1

4

of it. Who mowed most of the lawn? How much of the lawn still needs to be mowed?
(little sister needs answer)

Answers

Answer: I believe Ms. Rios mowed more, hope this helps!

Guys help ASAP! Is 2 a solution of 4x+12=4 complete the statement

Answers

the answer is “is not” hope this helps

Answer:

false ; is not

Step-by-step explanation:

can someone help please?

Answers

Answer:

a. 150 degrees

b. 210 degrees

c. 12π

d. 5π

e. 7π

f. 36π

g. (I'm assuming the shaded region is CAB) 15π

guys i need your hell with this question please help and show your work. will mark you brainliest please​

Answers

Your answer is A
Multiply the fractions

The student council sold 113 sodas for $141.25 at the fall festival. What is the cost per soda?

Answers

Answer:

cost of 113 sodas =141.25

cost of 1 soda=141.25/113

=1.24

Other Questions
Can somebody help??? Write the equation in slope intercept form of the line passing through the following points (0,5) and (-5, -1). find x for this please. Please Help 100 PointsRespond to the following prompt by stating your claim.Prompt:Parents have the single most impact on their children in terms of instilling values of justice and self-control. computers can turn electrical energy into light and sound energy. which other type of energy does a computer produceA. Thermal EnergyB. chemical energyC. magnetic energyD. gravitational energy Pls fastHow did the Chinese government and American pilots work together to create an airforce for China?Rewrite the question above as a statement.Copy and paste an example from the text that supports the statement above.Explain your example.Copy and paste another example from the text.Explain your example.Write a conclusion sentence. These American mercenaries were the heroes of China(CNN) Consider this job offer:A one-year contract to live and work in China, flying, repairing and making airplanes. Pay is as much as $13,700 a month with 30 days off a year. Housing is included and you'll get an extra $550 a month for food. On top of that, there's an extra $9,000 for every Japanese airplane you destroy -- no limit.That's the deal -- in inflation-adjusted 2020 dollars -- that a few hundred Americans took in 1941 to become the heroes, and some would even say the saviors, of China.Those American pilots, mechanics and support personnel became members of the American Volunteer Group (AVG), later known as the Flying Tigers.The group's American-made warplanes featured the gaping, tooth-filled mouth of a shark on their nose, a fearsome symbol still used on the US Air Force's A-10 ground-attack jets to this day.Flying Tiger pilot Robert T. Smith snapped this photo of his squadron in flight over China on May 28, 1942.The nose's symbolic fierceness was backed up by its pilots in combat. The Flying Tigers are credited with destroying as many as 497 Japanese planes at a cost of only 73 of their own.Today, even with US-China tensions rising, those American mercenaries are still revered in China, with memorial parks dedicated to them and their exploits."China always remembers the contribution and sacrifice made to it by the United States and the American people during the World War II," says an entry on the Flying Tigers memorial page of China's state-run newspaper People's Daily Online.The formation of the Flying TigersWhen these Americans arrived in China in 1941, the country was very different from the China we know today. Leader Chiang Kai-shek, a revolutionary who split with the Communist Party, was able to loosely unite the country's warlords under a central government. What is the set of major stages than an organism goes through during its life called? How many codons are in the following mRNA sequence?AUAUCUAGGCUU* The design thinking process is is broken down to 6 steps, but separated into 3 categories. Which of the following is not a category?UnderstandExploreMaterializeBuild The chemical or molecule that the enzyme is changing or affecting is _____________activation energya substratean active site Which of the following is true if YW is an angle bisector. the formula for simple interest is Pizza Guy pizza delivery time for a pizza isapproximately normally distributed with amean of 22 minutes and a standard deviationof 5. Pizza Guy guarantees delivery within 30minutes or the pizza is free. What percent ofcustomers will get a free pizza?a) 3.5% b) 4.5% c) 5.0% d) 5.5% e) 6.5% The French Revolution Place the following events in chronological order,The Reign of Terror resulted in the execution of anyone considered enemies of the revolution,Robespierre became leader of the new French Government, Robespierre is executed, and the Reign of Terror ends,Counterrevolutions break out inside France, which is less -2.34 or -2.2? Where is the highest population likely found?a suburban areaa rural areaan urban area Which equation has infinite solutions for x? How did materialism and the Kaiser help promote German unification? Leon is creating a model using the items in the picture below. How could he best improve his model?OEarthMoonSunMake the earth larger than the sunMake the moon larger than the sunMake the sun smaller than the earthMake the moon smaller than the earth 609.014what is the anawer