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3 years ago

What is a 5a − 8 = 8 + a

Mathematics

2 answers:

stira [4]3 years ago

8 0

Well since both sides have to equal the same thing A will have to make them true

it can be 5x A=3 so 5x3=15 -8=7 so the other side has to be the same amount

8+ -1 =7 so A can be 7 and -1

In-s [12.5K]3 years ago

3 0

Answer:

a=4

Step-by-step explanation:

5a-8=8+a

4a-8=8

4a=16

a=4

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Can you give me a sentence for 2 divided by 1/4

jeka57 [31]

Answer:

Two divided by four is the same as: two times 4, which is eight.

Hope this helps!

6 0

4 years ago

Solve this problem out

Phoenix [80]

Solving the equation $2x^2-12x+6=0$ using completing square method we get $(x+3)^2=6$

So, Option A is correct.

Step-by-step explanation:

We need to solve the equation $2x^2-12x+6=0$ using completing square method.

Solving using completing square method

$2x^2-12x+6=0$

For completing the square we need to make formula a^2-2ab+b^2=(a-b)^2

Divide the equations by 2

$x^2-6x+3=0$

Adding and subtracting (3)^2 on both sides.

$(x)^2-2(x)(3)+(3)^2-9+3=0$

$(x+3)^2-6=0$

$(x+3)^2=6$

Solving the equation $2x^2-12x+6=0$ using completing square method we get $(x+3)^2=6$

So, Option A is correct.

Keywords: Solving Quadratic Equation

Learn more about Solving Quadratic Equation at:

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7 0

4 years ago

What is the best way to solve a literal equation?

Kobotan [32]

Answer:

To solve a literal equation means to express one variable with respect to the other variables in the equation.

Step-by-step explanation:

Determine which variable you need to isolate. Isolating a variable means getting the variable on one side of an equation by itself.

Use algebra to solve for the desired variable. Use inverse operations to cancel variables on one side of the equation and move them to the other side. 3.

Keep the equation balanced. Whatever you do to one side of the equation, you must also do to the other side

7 0

3 years ago

Which value has the closest to 9?

Alecsey [184]

Hey!

Lets take the square root of all these answer choices.

√63 ≈ 7.9
√99 ≈ 9.4
√83 ≈ 9.1
√10 ≈ 3.2

So if we look at all the answer choices square root, the answer that is the closest to 9 is √83.

Therefore, your answer will be C. square root of 83.

Hope this helps! :)

5 0

4 years ago

Read 2 more answers

In a random sample of 7 residents of the state of Maine, the mean waste recycled per person per day was 1.4 pounds with a standa

ivolga24 [154]

Answer:

a) The 95% confidence interval for the mean waste recycled per person per day for the population of Maine is between 1.19 and 1.61 pounds.

b) $T_c = 2.4469$

Step-by-step explanation:

We have the standard deviation for the sample, which means that the t-distribution is used to solve this question.

The first step to solve this problem is finding how many degrees of freedom, we have. This is the sample size subtracted by 1. So

df = 7 - 1 = 6

95% confidence interval

Now, we have to find a value of T, which is found looking at the t table, with 6 degrees of freedom(y-axis) and a confidence level of $1 - \frac{1 - 0.95}{2} = 0.975$ . So we have T = 2.4469, and the answer to question b is $T_c = 2.4469$

The margin of error is:

$M = T\frac{s}{\sqrt{n}} = 2.4469\frac{0.23}{\sqrt{7}} = 0.21$

In which s is the standard deviation of the sample and n is the size of the sample.

The lower end of the interval is the sample mean subtracted by M. So it is 1.4 - 0.21 = 1.19 pounds.

The upper end of the interval is the sample mean added to M. So it is 1.4 + 0.21 = 1.61 pounds.

The 95% confidence interval for the mean waste recycled per person per day for the population of Maine is between 1.19 and 1.61 pounds.

7 0

3 years ago