What is 8x squared = 56 rounded to the nearest tenth equal?

Answers

Answer 1

Answer: $8x^2=56\ /:8\nx^2=7\nx^2-7=0\n(x- √(7) )(x+ √(7) )=0\nx-√(7)=0\ \ \ \ \ or\ \ \ \ \ x+√(7)=0\nx=√(7)\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x=-√(7)\n \n x\approx2.65\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x-\approx2.65$

Answer 2

Answer: 8x^2=56
divide noth sides by 8
x^2=7
square root both sides
x=2.65 or -2.65

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22 is what percent of 100 or 22 is______ % of 100

Answers

just put 22/100
That's 22% straight off the bat

22 = x% × 100
100x = 22 × 100
x = 22%

Or just do:

22 = x% of 100
22/100 = x
22% = x

Can you simplify 15/18

Answers

In fact, you can! The common multiple between the two of them is 3
Therefore, we divide both numerator and denominator by 3
15/3 = 5
18/3 = 6
therefore, the simplest form of the fraction is 5/6

Find the value of x2 − 7x + 9 when x = 6.

The value of the expression when x = 6 is

Answers

Answer:

-21.

Step-by-step explanation:

(6)2-7(6)+9

--> 6x2= 12

--> 7x6= 42

Rewrite the expression:

--> 12-42+9

Solve:

--> 12-42= -30

--> -30+7= -21

Do natural numbers have multiplicative inverse

Answers

no,because a multiplcative inverse is when your changing a division or multiplcation sign!

BRAINLIEST IF YOU EXPLAIN! A group of students is arranging squares into layers to create a project. The first layer has 5 squares. The second layer has 10 squares. Which formula represents an arithmetic explicit formula to determine the number of squares in each layer?

f(1) = 5; f(n) = 5 ⋅ d(n − 1), n > 0
f(1) = 5; f(n) = 5 ⋅ d(n + 1), n > 0
f(1) = 5; f(n) = 5 + d(n − 1), n > 0
f(1) = 5; f(n) = 5 + d(n + 1), n > 0

Answers

Answer:

f(1) = 5; f(n) = 5 + d(n − 1), n > 0

Step-by-step explanation:

Given

f(1) = 5

f(2) = 10

Required

Determine f(n)

From the formulas in the option, we understand that the sequence is Arithmetic.

And will be determined using

f(n) = a + (n - 1)d

Where a = f(1) = 5

Substitute 5 for a,

f(n) = 5 + (n - 1)d

f(n) = 5 + d(n - 1)

To test,

Take n = 2

d = f(2) - f(1) = 10 - 5 = 5

So, we have

f(n) = a + (n - 1)d

f(n) = 5 + (2 - 1) * 5

f(n) = 5 + 1 * 5

f(n) = 5 + 5

f(n) = 10

Hence,

Option B answers the question.

Answer:

The person who answered above meant to say that it was C not B.

Step-by-step explanation:

His answer was (1) = 5; f(n) = 5 + d(n − 1), n > 0 and this would have been c not b. B would have been f(1) = 5; f(n) = 5 ⋅ d(n + 1), n > 0 which is incorrect.

Plz dont report me i'm just trying to correct the answer above.

And i'm not doing this for points either. Just trying to help people fix their mistakes so that others don't mess up, that is all.

What is 357 divided by (-7)

Answers

Answer:

357÷-7=-51

Step-by-step explanation:

-51×-7=357

357÷-7=-51

a negative multiplied by a negative equals a positive

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