Mathematics High School

Solve 3x^2+4=436
Please solve step by step

Answers

Answer 1

Answer:12

Step-by-step explanation:

Your goal with variables should always be to isolate them.

so the first step is to subtract the 4

3x^2+4=436

       -4= -4

3x^2=432

The next step to isolate the variable x is to get rid of the 3. To get rid of the 3 you have to divide both sides by 3 since it is the opposite of multiplying.

3x^2=432

/3.    =/3

x^2=144

the last step to isolate the x is to do the opposite of what an exponent is, which is to find the square root. So when you square the x^2, the exponent cancels out.

square root of x^2=x

square root of 144=12

x=12

hope this helps!

Related Questions

Given that 8 x − 3 y = 36 Find x when y = 3 Give your answer as an improper fraction in its simplest form.

Answers

Answer:

5.62

Step-by-step explanation:

8x-3y=36

8x-3×3=36

8x=36+9

x=5.62

Answer:

x= 45/8

Step-by-step explanation:

8x - 3y = 36

8x - 3(3) = 36

8x - 9 = 36

8x=45

x=45/8

Devon needs 8 yards of fabric to make a blanket. He has a total of 332 yards of fabric. How many blankets can Devon make? A 4040 B 4141 C 4242 D 4343

Answers

332/8= 41.5 but you cant make half of a blanket so itll be 41!

simplify 3x^2-2x+1
x=2

Answers

Answer:

9

Step-by-step explanation:

3(2)^2 - 2(2) + 1

3(4) - 4 + 1

12 - 3

9

substitute 3(2)^2-2(2)+1
so 3*4-4+1
12-4+1
8+1
=9

Can you please help me?

Answers

Answer: No

Step-by-step explanation: Because.

no, 3 times 2 is not 10

George has just purchased a small rectangular fish tank that holds 837 milliliters of water. The tank has a width of 6.2 cm and a
height of 9 cm.
What is the length of the fish tank?

Answers

Answer:

Step-by-step explanation:

Answer:

15 cm

Step-by-step explanation:

Area = Length ⋅ Width ⋅ Height

let's set:

Area: 837

Length: X

Width: 6.2 cm

Height: 9cm

837 = X ⋅ 6.2 ⋅ 9

First multiply 6.2 and 9 to get 55.8

Next divide 837 by 55.8 and you get 15

therefore, the length (x) is equal to 15

What is the area to 16 square feet

Answers

Answer:

1.48645ft

Step-by-step explanation:

brainliest plssss

How to graph this slop (put a pic if u can )pls help due at 11

Answers

Answer:

hopes this help luv <3

Step-by-step explanation:

Factor the expression
C^2 - 2c - 63

Answers

Answer:

(c + 7) ( c - 9)

Step-by-step explanation:

Answer:

(c + 7)(c - 9)

Step-by-step explanation:

Allex has a $20 bill. At the corner store, he buys a
bag of Hot Fries for $1.99 and 6 packs of gum. He
gets $11.77 in change. What is the price of one
pack of gum?

Answers

Answer:

First we need to subtract the hot fries. 20 - 1.99 = 18.01

he gets 11.77 so lets subtract it is 6.94 left so now divide by 6 is 1.5666666 or 1.6 per pack

Step-by-step explanation:

HELP GUYS THIS IS NOT FUNNY
WHAT IS 20 PLUS 20 IMCNOT LYING

Answers

Answer:

its 40 dude

Step-by-step explanation:

The temperature of a city is 4 degrees Celsius Next day the temperature falls by 5 degrees Celsius what is the temperature of the city next day

Answers

Answer:

t

Step-by-step explanation:

tggt

Answer:

-1C

Step-by-step explanation

Set up the equation 4-5, which will give you -1

Is 5 26 28 a right triangle?

Answers

Yes, it’s a right triangle.

Solve for x and then find the measure of B

Answers

Answer:

x=6

b= 126

Step-by-step explanation:

8x+78 = 2x+114

8x-2x = 114-78

6x=36

x=6

--------

b=2x6+114

b= 126

PLEASE ANSWER QUICK I NEED HELP

Answers

Answer:

I think c?

Step-by-step explanation:

the answer is c!!!

explanation sindkdksksjdkdjdjej

brailnsliest would help


Find the inequality represented by the graph.

Answers

Answer:

y < 3/4x

Step-by-step explanation:

Please let me know if you want me to explain how to do this problem :)

Which number is the base?

(-14)^3

Answers

Answer: -2744

Step-by-step explanation:

Try -2744? ( If i am wrong than sorry

ANYONE HELP PLEASE<3

Answers

Answer:

y = (2/3)x + 7

Step-by-step explanation:

Slope intercept form is y = mx +b

1) We start off with y =

2) m = slope. Since we know that the slope is 2/3 we can plug it in. y = 2/3x

3) b is y-intercept which = 7.

Put it all together: y = 2/3 x + 7

The answer is

y = 2/3x +7

Hope this helped!

Congruen Figures lyures Which figure is congruent to the given figure? Will give brainliest ​

Answers

Answer: Its the rectangle thats going upwards not flat.

Step-by-step explanation:

Answer: The rectangle at the very top and the one at the bottom are congruent.

Step-by-step explanation: REMEMBER YALL: congruent means the same( in geometry)

//Give thanks if helpful :)//

3. Use the equation to answer the following question. 3x2 + 7x - 20 = 0 What are the solutions of the equation?

A. X = 5 and x = 4 3
B. X = - 4 and x = 5 3 4
C. X = and x = -5 3 5
D. X = and x = -4 3 ​

Answers

Hmmm I got u I know somebody that can help you really good I have to get them right now I’m

Need to know now!
How do you solve “at this rate...”

Answers

Answer: you do the length times width

Step-by-step explanation:

Answer:

"At this rate" for me usually will be some sort of dividing

100 POINTS PLEASE ANSWER HONESTLY,

YOU ONLY HAVE TO DO HALF IF U WANT BUT IF YOU WANT BRAINILY DO FULL 100 POINTSSSSSSSSs

Answers

Answer:

2.−2b−8

4.12k−2

5.−32t−20

6.8g+17

7.3a−2

8.−15d+30

9.2a+2b

10.35a−21

11.10f−15

12.−2x+4

13.2a+20

Step-by-step explanation:

i will do the right part after u finish with the left oen if u don't understand it look at the letters to know which problem is the answer

Answer:

hes right the GUY ABOVE IS 100% right i swear on my life

Step-by-step explanation:

can someone help me answer this pls.

Answers

Answer:

a. {7,14}

b. {10,17,24,31}

c. (no)

Step-by-step explanation:

c. because for two different values of domain there is a single value of codomain (range )

angle A and angle B are supplementary angles. If m angle A = (2x + 26)° and m
angle B = (x + 25)°, then find the measure of angle B.


x=43

Answers

Answer:

m angle B = 68°

Step-by-step explanation:

Since they are supplementary, they add up to 180°

(2x+26) + (x+25) = 180

add like terms together

3x+26+25=180

simplify the left side

3x+51=180

subtract 51 from both sides

3x=129

divide both sides by 3

x=43

Then you plug in x into measure B

(43)+25

68

If it takes 20 minutes to drive to the store, 9 minutes to walk from your car to the back of the store, then back to the register, 2 minutes to walk back to you car, and 20 minutes to drive back why has my dad been gone for 9 years?​

Answers

Answer:

Maybe he ran out of gas. Give him a bit time to refill, and you'll be fine :)

The sides of a triangle measure 2x + 5, X – 4, and
3(2x + 1). What is the perimeter of the triangle?

Answers

Answer:

9x+4

Step-by-step explanation:

perimeter= sum of all sides

perimeter= (2x+5)+ (x-4)+ 3(2x+1)

= 2x+5+x-4+ 6x+3

= 2x+x+6x+5+3-4

= 9x+8-4

=9x+4

answers ASAP plsssssss

Answers

Answer:

Step-by-step explanation:the answer is option A as 1 • 3 =3 and 3+4=7

60% of 15 is what answer

Answers

The correct answer is 9. :)

Answer:9

Step-by-step explanation:

Think of it this way:

If 15=100%

then x= 60%

So what you do is you multply 60 times 15 and divide it by 100 to give you the answer of 9. To me this is the simplest way to do it, I believe it’s called butterfly multiplying. You cross multiply and then you divide.

-(7-9)z-6z=8(-6+2) solve for z
can I see the process I know the answer is 8 I just don't understand the process

Answers

Answer:

(-(7-9))(z)-6z= 8(-6+2)

Simplify

-(-2)(z) -6z =8(-6+2)

Multiply 8*-6 and 8*2

2z -6z= -48+16

Combine like terms

2z+-6z =-32

-4z=-32

Divide both sides by -4

z=8

Step-by-step explanation:

Please help on this question:

Answers

Answer:

$149.88

Step-by-step explanation:

An oval running track is 1/5 mile long. Elena runs on this track, completing each lap in 1/20 of an hour. What is Elena's running speed? (in miles per hour)


PLEASE I NEED HELP ASAP

Answers

Answer:

5 miles per hour

Step-by-step explanation:

the answer is 5 miles per hour, sorry if I am wrong.

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