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3 years ago

Find the coefficient of x^2 in the expression of (x - 7)^5. a. -3430 b. -3034 c. 3034 d. 3430

Mathematics

2 answers:

statuscvo [17]3 years ago

8 0

Find the coefficient of x^2 in the expression of (x - 7)^5.

a. -3430

MrRissso [65]3 years ago

3 0

Answer:

let me know when you have the anwser

Step-by-step explanation:

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What is the value of the function when x = 2? x −4 −2 0 2 4 y 3 4 2 6 7

Savatey [412]

Where is the function?

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3 years ago

A florist arranges 4 flower arrangements in 92 minutes.

Black_prince [1.1K]

Answer:

$\boxed {\boxed {\sf 9 \ arrangements }}$

Step-by-step explanation:

Let's set up a proportion using the following setup:

$\frac{arrangements}{minutes} =\frac{arrangements}{minutes}$

We know that the florist can arrange 4 in 92 minutes.

$\frac{4 \ arrangements}{92 \ minutes} = \frac{arrangements}{minutes}$

We don't know how many the florist can arrange in 207 minutes, so we say x arrangements can be completed in 207 minutes.

$\frac{4 \ arrangements}{92 \ minutes} = \frac{ x \ arrangements}{ 207 \ minutes}$

$\frac{4}{92} =\frac{x}{207}$

Solve for x by isolating it on one side of the proportion.

x is being divided by 207. The inverse of division is multiplication. Multiply both sides of the proportion by 207.

$207*\frac{4}{92}=\frac{x}{207}*207$

$207*\frac{4}{92}=x$

$207*0.0434782609=x$

$9=x$

The florist can arrange 9 arrangements in 207 minutes.

5 0

3 years ago

What is the answer for 65=2(d+1)+5d?

vladimir1956 [14]

$65 = 2(d + 1) + 5d$
$65 = 2d + 2 + 5d$
$65 = 7d + 2$
$63 = 7d$
Finally divide by 7.
$d = 63 \div 7 = 9$
Hence, the answer is d = 9

5 0

3 years ago

This is a standard deviation contest. You must choose four numbers from the whole numbers 0 to 10 , with repeats allowed. (a) Ch

irina [24]

Answer:

Kindly check explanation

Step-by-step explanation:

Given the following instructions :

Choose 4 numbers from the whole numbers 0 - 10

Note : Repetition is allowed

Choose 4 numbers with the smallest possible standard deviation.

The smallest possible value of standard deviation obtainable is 0;

Hence in other to obtain a standard deviation value of 0, then;

The mean squared deviation value must be zero (0)

Σ(X - mean)^2 = 0

To achieve this, the values of X and the mean must be the same.

Hence all 4 numbers (X) must be the same in other to have a mean value which is equal to X

For instance :

If X = 3, 3, 3, 3 (since Repetition is allowed)

Man value = (3+ 3+ 3+ 3) / 4 = 12 / 4 = 3

Σ(3 - 3)² = 0 for all values of x

√Σ(x - mean)² / n = 0 ; if all values of x are the Same

n = Number of observations

A possible list of values is (3,3,3,3)

4 0

3 years ago

Jane is a cliff diver and she is planning on jumping from a height of 747 feet and landing in the water below. She will end her

nekit [7.7K]

Answer:

811 feet

Step-by-step explanation:

When finding height difference, you use absolute value, so everything is positive. 747+64 = 811, so your answer is 811 feet.

Hope this helps!

8 0

3 years ago

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