Mathematics High School

Solve the equation using square roots
x^2 - 55 = 26

Answers

Answer 1

Answer:

x = ±9

Step-by-step explanation:

x² - 55 = 26

   +55   + 55

     x² = 81

     x = √81

     x = ± 9

Answer 2

Answer:

x = 9, -9

Step-by-step explanation:

x^2 - 55 = 26

x^2 = 81.

Now, you might think that x = 9, but don't be fooled. -9 squared is also equal to 81.

So, x = 9, -9

Related Questions

Quadrilateral WXYZ is a rectangle. Diagonals WY and ZX intersect at P. If PY=3x−5 and WP=2x+11, find the value of ZP.

ZP=43

ZP=25

ZP=16

ZP=66

Answers

Answer:

The right answer is ZP = 43

Step-by-step explanation:

I just took the quick check

Find the value of the greater root of x2-6x+5=0

Answers

Answer: x-1)(x-5)=0 x=1 and 5

Step-by-step explanation:

It costs $3.60 to buy one lb of candy. How much would it cost to purchase 5 lbs of candy?

Answers

33$ because 3.60•5lbs= 33$

Answer:

18$

Step-by-step explanation:

The answer is 18$ because you multiply 3.60$ by 5 lbs

Verizon charges $200 to start up a cell phone plan. then there is a $50 charge each month. what is the total cost for .x months

Answers

Answer:

200 + 50x

Step-by-step explanation:

depending on what x is, you multiply x by 50 and add 200, since 200 is the start up fee and the constant. the 50 dollars per month is a variable, since the more months you own the plan, the more money it would cost.

please help asap!!!!

Answers

Answer:

12                                        

Step-by-step explanation: 60

Help I need one more number but I have no clue what it is!!!!!!!!!!!!!

Answers

Answer:

The point of intersection with the x axis are (-2,0) and (8,0)

Step-by-step explanation:

given circle equation x²+y² = 25

x² + y² = r²

r is the radius.

✓(25) = 5

given the center is at (3,0) and radius of 5

(3+5,0) and (3-5,0)

(8,0) and (-2,0)

(Please heart the answer if you find it helpful, it's a motivation for me to help more people)

Its 21356478392947uejeh

Point Q′ is the image of Q(5, –3) after a translation down 2 units and right 4 units. What are the coordinates of Q′?

Answers

Answer:

9,-5

Step-by-step explanation:

imagine the coordinate on a graph

if it helps draw a graph

Given X is midpoint of RS , MX =XS Prove Mx =RX

Answers

Answer:

Transitive Property

Step-by-step explanation:

Since X is the midpoint, it bisects the points RS. If MX=XS, and RS is the same as XS, then they are the same. This also follows the Transitive propety  (if a=b and b=c, then a=c)

PLEASE HELP IM DESPERATE
The height of a male athlete testing his vertical jump can be modeled by h = − 16t ^2 + 14t. The height is h and the time is t. How many seconds is he in the air?

Answers

Answer:

0.88 (I think this is how Mrs. Futch wants it to be written)

Step-by-step explanation:

h=-16t^2+14t

(Substitute h with 0)

0=-16t^2+14t

(Factor)

0=2t(-8t+7)

2t=0               -8t+7=0

t=0                  t=0.88

{0, 0.88}

Answer:

So everyone here in Mrs. Futch?

Step-by-step explanation:

Help fast please!!!!!!!

Answers

Answer: n=7+1/2

Step-by-step explanation:

We move all terms to the left:

2n+15-(30)=0

We add all the numbers together, and all the variables

2n-15=0

We move all terms containing n to the left, all other terms to the right

2n=15

n=15/2

n=7+1/2

PLEASE HELP!! WORTH 5 POINTS ON MY TEST!! GIVING 30 POINTS!!
FIND BD

Answers

Answer:

16

Step-by-step explanation:

Hello so
16 is the answer

Use the diagram to the right to solve for y.
A y = 13
B
y = 15
C. y = 7.5
D
y = 20

Answers

Answer: D y=20

Step-by-step explanation: I minus 115 and 120 and and multiplied 4x and i got y=20. I hope this helps

Write a quadratic function in vertex form whose graph has the vertex ( -5. - 1) and passes through the point (-2.2).

Answers

Answer:

[tex](\frac{1}{3})(x+5)^2-1[/tex]

Step-by-step explanation:

So first let's write a graph in vertex form with a vertex of (-5, -1)

We get

a(x+5)²-1

We now need to determine a

we know that when x= -2 y=2 which means we have

a(-2+5)²-1=2

Solve for a

a(3)²=3

9a=3

a=3/9

a=1/3

Now that we know what a is equal to we can write our equation

[tex](\frac{1}{3})(x+5)^2-1[/tex]

Is (-3,2) a solution to the system of equations below ?

Answers

help me its 7 85 49 =482i23u23

Which of the following equations is equivalent to 3 • 12 = 36?
36 + 3 = 12
36 ÷ 3 = 12
36 • 3 = 12
36 – 3 = 12

Answers

Answer:

B

Step-by-step explanation:

36 ÷ 3 = 12 is basically the division version of the original equation. None of the other equations equal the same answer so B is the correct option.

36 ÷ 3 = 12 is equivalent to 3 • 12 = 36

Solve using quadratic formula.
x2 – 5x – 36 = 0
Please help me ASAP!

1:x={-3,4}
2:x={9,-4}
3:x={-9,4}
4:x={-4,5}

Answers

Answer:

2

Step-by-step explanation:

Just use the quadratic formula

A bag contains 40 red and green marbles. The number of green marbles, g, is 9 times the number of red mapples, . How many red marbles are in the bag? O 4 O 6 O 34 O 36​

Answers

Answer:

4

Step-by-step explanation:

You need to try out all the numbers.

lets start with 4

if there where 4 red marbles then there would be 9 times as many marbles

so 4 x 9 = 36

Now we add and see if the sum is 40

36 + 4 = 40

We got it on the first try

You can use the same method on more problems like these.

Hope this helps :)

2(x + 5) = 30 what does x equal?​

Answers

Answer:

x = 10

Step-by-step explanation:

(2x10) + (2x5) = 30

Answer:

10

Step-by-step explanation:

2(x+5)=30

30÷2=15

15-5=10

x=10

Finding missing angles
please help!! i’m literally begging

Answers

Answer:

65

Step-by-step explanation:

the square means 90 add that to 25 and subtract from 180

Answer:

x =  65

Step-by-step explanation:

The measure of the entire angle is 180°. The angle on the furthest left (with a square in it) is a right angle, meaning that it is 90°.

All three of the angles (90°, x°, 25°) all add up to the measure of the line, which is 180°. So, we can write this equation.

90 + x + 25 = 180

Subtract 90 and 25 from both sides.

90 + x + 25 - 90 - 25 = 180 - 90 - 25

x =  65

(2,8) and (1,3)
What is the equation of the line

Answers

Answer:

y=5x-2

Step-by-step explanation:

An item cost $80 but you were charged $56. What was the percent discount for that item?​

Answers

80 • x = 56
x = 56/80
x = 0.7

So $56 is 70% of $80. Then the discount is 30% (100% - 70% = 30%)

12 passengers in 3 cars

Answers

Answer:

4 people in each car

Step-by-step explanation:

12 divided by 3

HELP! I WILL GIVE BRAINLIEST!!!!!!!!!!!!!!

Answers

Answer:

i think the first one...

Step-by-step explanation:

Use distributive property to rewrite expression -8((-2-3/4)-8)

Answers

Answer:

-86

Step-by-step explanation:

-8((-11/4)-8)

((11/4-8)

8x(-43/4)

-2×43=-86

PLZZZZZZZZZZZZZZZZZZZZZZZZZ HELPPPPPPPPPPPPPPPPPP MEEEEEEEEEEEE
solve by graphing
x - 3y = 2
-3x + 9y = -6

Answers

Answer:

This is the graph (NOTE, THEY ARE ON TOP OF EACH OTHER).

Step-by-step explanation:

1/3 (x – 10) = -4, x =

Answers

Answer:

Step-by-step explanation:

Divide both sides by 1/3, which is equivalent to mulitplying by 3

x - 10 = -12

Add 10 to both sides

x = -2

| How do you write 1.4 x 102 in standard form?

Answers

Answer:

1.4279999999999999 x 10²

Step-by-step explanation:

what are major turning points in algebraic knowledge through out history

Answers

Answer:

There are a lot of turning point in the history of algebra one of those is the discovery of  the plain and the quadrants by Rene Descartes. This discovery paved way to a lot of knowledge which was later on use in solving other complicated mathematical problems.

Step-by-step explanation:

Write an equation in slope intercept for that passes through (-3,3) and is parallel to y=3x-2

Answers

y-3=3(x+3)
y=3x+12
is the slope intercept

Carmen has an average of 8 on two 10-point math quizzes. If she scored 10 on the third quiz, what is true of Carmen's average score on all three quizzes?

Answers

Answer:

9

Step-by-step explanation:

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