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

work out, giving your answer as a mixed number:
4 2/3 + 1 3/4 =

Answers

4x3+2 = 14/3 —> 56/12
1x4+3 = 7/4 —> 21/12
56-21 is equal to 35/12
Which is 2 and 11/12

Answer:

6 5/12.

Step-by-step explanation:

4 2/3 + 1 3/4

= 4 + 1 + 2/3 + 3/4

= 5 + 8/12 + 9/12

= 5 + 17/12

= 5 + 1 5/12

= 6 5/12.

Find the lateral surface area of the cylinder. Round your answer to the nearest tenth.

Radius - 7
height- 2

Answers

Answer: 87.9

Step-by-step explanation:

Since the formula is 2 x pi x radius x height, we plug the equation in.

If you use “3.14” for pi, it’s 2 x 3.14 x 7 x 2 = 87.9 (rounded to the nearest tenth)

2 x pi x 7 x 2 = 87.96 (88 rounded to the tenth)

Which of the following proportions is false?

Answers

Answer:

D is false

Step-by-step explanation:

The one that’s says 18/48=20/50 is wrong and would be the correct answer

48-7)x(56+19 need help with dat

Answers

Answer:

3075 should be the answer.

Step-by-step explanation:

48-7)x(56+19

(48 - 7) x (56 + 19)

41 x 75

3075

-8j+14=-2(4j-7) what is this answer ?

Answers

Answer:

Infinite amount of solutions.

Step-by-step explanation:

It's an interval notation. (∞,∞)

Answer:

0=0

Step-by-step explanation:

-2*4j+2*j

-8j+14=-8j+14

-8j+14-14=-8j+14-14

-8j=-8j

0=0


If f(x) = 3x + 1, what is one possible value of x for
which 6

Answers

Answer:

1/3

Step-by-step explanation:

It takes 4 pounds of apples to make 6 cups of applesauce.

Select all the rates that are equvalent to the rate in the statement above.

Group of answer choices

5:7

10:15

6:9

1:2

14:21

8:10

Answers

Answer:

Step-by-step explanation:

4lbs of apples to 6 cups of apple sauce

we can write this as 2:3

the correct choices: 6:9 and 14:21

Leyan bought 234 pounds of apples for $1.32 per pound, 112 pounds of peaches for $1.20 per pound, and some tomatoes, all from a grocery store. The total cost of his purchase was $9.63. How much money did Leyan spend on tomatoes?

Answers

Answer: See explanation

Step-by-step explanation:

I think your question isn't well written and that 234 was meant to be 2.34 and 112 was meant to be 1.12

Let the amount spent on tomatoes be x.

The information given in the question can then be used to form an equation as thus:

Apples + Peaches + Tomatoes = $9.63

(2.34 × $1.32) + (1.12 × $1.20) + x = $9.63

$3.0888 + $1.344 + x = $9.63

x = $9.63 - ($3.0888 + $1.344)

x = $9.63 - $4.4328

x = $5.1972

The amount spent on tomatoes will be $5.1972

Answer:

The answer is 4.2 I did this question already

Step-by-step explanation: You multiply 2 3/4 and 1.32 and then add that to the product of the 1 1/2 peaches for 1.20 per pound, then subtract the answer from 9.63 to get the solution for x.

Select all the expressions that are equivalent to 16x - 12 - 24x + 4
1) 4 + 16x - 12(1 + 2x)
2) 40x - 16
3) 16x - 24x - 4 + 12
4) -8x - 8

Answers

Answer:

(1) and (4)

Step-by-step explanation:

4 + 16x - 12(1 + 2x) = 4 + 16x - 12 - 24x

4 + 16x - 12 - 24x = 16x - 12 - 24x + 4

- 24x + 16x = -8x

- 12 + 4 = -8

Which creates -8x - 8

YALL HELP ME PLEASE ITS URGENT ​

Answers

I am not sure what the answer is

Needdddddd helpppppppp ASAP

Answers

Answer:

4th option, always increasing

Step-by-step explanation:

It’s always increasing because the graph is concave up

If you get it right/wrong, do let me know

i think it’s b because it first goes down then starts to go up again

Please Help :D
助けてください

Answers

Answer:

1. false

2. true

3. false

4. false

Step-by-step explanation:

1. 128 is not equal to 125

2. 119.7 = 119.7

3. 13.2 is not equal to 1.32

4. 5.88 is not equal to 12

what is –7y = –8y + 2

Answers

Answer:

Step-by-step explanation:

Have a good day

Answer:

y= 2

Step-by-step explanation:

hope this helps:)))

-4x – 6 = -3.8 - 3x – 10​

Answers

Answer:

[tex]x=7.8[/tex]

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

Hope this helps :)

-ilovejiminssi♡

Answer:

x=7.8

Step-by-step explanation:

Brainliest pls if this helps

Someone help me please !!

Answers

x=37

all of the angles have to add up to 180:)

NEED HELP RN ILL GIVE YOU BRAINLIST

The front of this button has a radius of 32 mm.



Which equation could be used to find the area of the front of the button in square millimeters?
A
A=32⋅π

B
A=64⋅π

C
A=π⋅322

D
A=π⋅642

Answers

Answer:

A

Step-by-step explanation:

You multiply it and since 32mm is half it would be 64

Answer:

none of them, it would be A = pi * 32^2

Step-by-step explanation:

If the scale factor for the dilation shown is 3, which is
the length of B'C'?
O 5/3
O 8
O 12
O 15

Answers

Answer:

the answer is D, 13

Step-by-step explanation:

I just did the assignment

Answer:

D 15

Step-by-step explanation:

Which expression is equivalent to (7x3}(x8}

Answers

Answer:

[tex]168[/tex]

Step-by-step explanation:

Because we are missing the options to this question we will have to answer this question using what we know.

[tex]7\times3\times8[/tex]

Solve

[tex]7\times3=21[/tex]

[tex]21\times8=168[/tex]

[tex]=168[/tex]

All you have to do now is find the expression that also equals to 168, when you do that option is your answer.

Hope this helps.

Solve for x.
-42 - 3 = -11
pls and thank you:)

Answers

Answer:

there is no any x

Step-by-step explanation:

but if you want to say -42x-3= -11

-42x-3+3= -11+3

-42x=8

-42x/-42=8/-42

x= -8/42

= -4/21

or if you want to say -42-3x= -11

-42+42-3x= -11+42

-3x= 31

-3x/-3=31/-3

x = -31/3

hope it's helpful ❤❤❤

THANK YOU❤

Answer:

The answer is -45 = -11

Step-by-step explanation:

Subtract  3  from  − 42 .

Hoped this helped!

Brainly, Please?

One winter day, the temperature was -15 degrees Fahrenheit. Later that day the temperature rose 12 degrees Fahrenheit to reach the high temperature for the day. If t represents the high temperature what is t.

Answers

-3

-15 plus 12 is -3

so T= -3

Right answer gets brainlist

Answers

Answer:

10 feet

Step-by-step explanation:

[tex] {r} = \sqrt{ \frac{V_{silo} }{\pi \times h} } \\ \\ {r} = \sqrt{ \frac{11938}{3.14 \times 38} } \\ \\ {r} = \sqrt{ \frac{11938}{119.32} } \\ \\r = \sqrt{100.050285} \\ \\ r = 10.0025139 \\ \\ r \approx \: 10\: ft[/tex]

10 is the answer to your question

Brenda had $23 to spend on two notebooks. After buying them she had $19. How much was each notebook?

Answers

Answer:

Brenda has 4 dollars

Step-by-step explanation:

Answer:

Each notebooks cost $2

Step-by-step explanation:

23-x=19

x=4

But she had 2 notebooks

So that means 4÷2=2

A $350 purchase is discounted 15%. You use a 20% coupon. What is the total paid?

Answers

Answer:

238 should be the answer

Step-by-step explanation:

what is 2 +2 this 65 points.

Answers

Answer:

4

Step-by-step explanation:

2 + 2 = 4 lol

Help if you can please..

Answers

Answer:

78

Step-by-step explanation:

42+36=78

Answer:

78

Step-by-step explanation:

42 + 36 = 78

kekeke9ieie

Use the slope-intercept form to graph the equation HELP PLEASE

Answers

Step-by-step explanation:

The picture in the attachment is the answer

What are the roots of the equation?
10x2 - 6x + 4 = -3x

Answers

Answer:

(3 +/- i*sqrt(151) / 20 (no real solutions)

Step-by-step explanation:

10x^2 - 6x + 4 = -3x

Add 3x to both sides

10x^2 - 6x + 4 + 3x = -3x + 3x

10x^2 - 6x + 4 + 3x = 0

Add like terms

10x^2 - 3x + 4 = 0

We have to use quadratic formula to find the answers

For this equation, a = 10, b = -3 and c = 4

Note: +/- is plus or minus

Quadratic formula:

x = (-b +/- sqrt(b^2 - 4ac)) / 2a

x = (-(-3) +/- sqrt(-3^2 - 4(10)(4))) / 2(10)

x = (3 +/- sqrt(9 - 160)) / 20

x = (3 +/- sqrt(-151) / 20

x = (3 +/- i*sqrt(151) / 20

if there's a "-" sign inside a square root, it will give you an imaginary number.

Example:

-sqrt(9) = -3

sqrt(-9) = 3i (first you will ignore the "- " sign, then square the number. After finding the square root, take that '-' sign and turn it to an "i")

So for sqrt(-151), 151 is not a perfect square, so you will get a decimal number. Leave it as it is:

sqrt(151). We can't forget about the "-". Turn the minus into a sign.

It will be i*sqrt(151)

Imaginary numbers can't be simplified, so this is the answer.

(3 +/- i*sqrt(151) / 20

Which fraction is equal to 0.5 7?

A. 19/30

B. 19/33

C. 26/45

D. 52/99

Answers

The answer to this question is 26/45

The correct answer for fraction equal to 0.57 is  [tex]\dfrac{19}{33}[/tex] and  [tex]\dfrac{26}{45}[/tex]. The correct 0ptions are C and B.

What is fraction?

A fraction is a numerical value that has both numerator and denominator.

Given Number:

A)

[tex]\dfrac{19}{30} = 0.63[/tex]

[tex]0.63[/tex] ≠ [tex]0.57[/tex]

B)

[tex]\dfrac{19}{33} = 0.5757[/tex]

[tex]0.57 = 0.57[/tex]

C)

[tex]\dfrac{26}{45} = 0.5777[/tex]

[tex]0.57 = 0.57[/tex]

D)

[tex]\dfrac{52}{99} = 0.52[/tex]

[tex]0.57[/tex] ≠ [tex]0.52[/tex]

The correct  fractions are [tex]\dfrac{19}{33}[/tex] and [tex]\dfrac{26}{45}[/tex] .The correct  options are C and B.

Learn more about fractions here:

https://brainly.com/question/29766013

#SPJ6

The radius of a circle is 10 meters. What is the area of a sector bounded by a 45° arc?
45°
r=10 m
Give the exact answer in simplest form.

Answers

Answer:

The area of the circular sector is approximately 39.269 square meters.

Step-by-step explanation:

A circular sector is a segment of a circle, whose area ([tex]A[/tex]), measured in square meters, is determined by this formula:

[tex]A = \frac{\theta}{2} \cdot r^{2}[/tex] (1)

Where:

[tex]\theta[/tex] - Central angle, measured in radians.

[tex]r[/tex] - Radius, measured in meters.

If we know that [tex]\theta = \frac{\pi}{4}[/tex] and [tex]r = 10\,m[/tex], then the area of the circular sector is:

[tex]A = \frac{\pi}{8} \cdot (10\,m)^{2}[/tex]

[tex]A \approx 39.269\,m^{2}[/tex]

The area of the circular sector is approximately 39.269 square meters.

Answer:

39.269

Step-by-step explanation:

One month lashonda rented 7 movies and 9 video games for a total of $73 the next month she rented 5 movies and 3 video games for a total of $29 find the rental cost for each movie and each video game

Answers

Answer:

Solve a system of equations with two unknowns x and y

where x is the rental price for the movie and y is the rent for video games

7x + 9y = 73

5x + 3y = 29

Solving the result: x = $ 1.75, y = $ 6.75

Step-by-step explanation:

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