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2 years ago

What is the product of (x − 3) and (x + 7)?

Mathematics

2 answers:

lidiya [134]2 years ago

5 0

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$\diamond\large\blue\textsf{\textbf{\underline{\underline{Question:-}}}}\diamond$

What is the product of (x-3) and (x+7)?

$\diamond\large\blue\textsf{\textbf{\underline{\underline{Answer and How to Solve:-}}}}\diamond$

First multiply the x's:-

x•x=x²

Now multiply x times 7:-

So we have

x²+7x

Now multiply -3 times x:-

-3x

So we have

x²+7x-3x

Now multiply 7 and -3:-

x²+7x-3x-21

On simplification,

x²+4x-21

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Alisiya [41]2 years ago

5 0

X times X +(-3) times X + X times 7 +(-3) times (7)=x^2 -3x +7x -21
= x ^2 +4x-21

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A clothing store uses comment cards to get feedback from its customers about newly added items. It recently introduced plus size

irga5000 [103]

Answer:

The percentage of customer would less likely to purchase next item is 26.2%

So, The nearest option will be (e).

Step-by-step explanation:

Given that,

The table of information is

Response = Very satisfied, Satisfied, less than fully satisfied and not satisfied

Frequency = 15, 30, 12 and 4

We need to calculate the total frequency

Using given frequency

$Total\ frequency = 15+30+12+4$

$Tota\ frequency = 61$

We need to calculate the total number of customers less or not fully satisfied

Using given data

$x = 12+4$

$x=16$

Where, x = total number

We need to calculate the percentage of customer would less likely to purchase next item

Using formula for percentage

$percentage\ of\ customer=\dfrac{total\ number\ of\ customer}{total\ frequency}\times100$

Put the value into the formula

$percentage\ of\ customer=\dfrac{16}{61}\times100$

$percentage\ of\ customer=26.2\%$

Hence, The percentage of customer would less likely to purchase next item is 26.2%

So, The nearest option will be (e).

6 0

4 years ago

A leprechaun places a magic penny under a girls pillow. The next night there are 2 magic pennies under her pillow. The following

kiruha [24]

Answer:

<em>After </em><em>47</em><em> days she will have more than 90 trillion pennies.</em>

Step-by-step explanation:

At the beginning there was 1 penny. At the second day the amount of pennies under the pillow became 2.

The amount of pennies doubled each day. So the series is,

$1,2,4,8,16,32,.....$

This series is in geometric progression.

As the pennies from each of the previous days are not being stored away until more pennies magically appear so the sum of series will be,

$S_n=\dfrac{a(r^n-1)}{r-1}$

where,

a = initial term = 1,

r = common ratio = 2,

As we have find the number of days that would elapse before she has a total of more than 90 trillion, so

$\Rightarrow 90\times 10^{12}\le \dfrac{1(2^n-1)}{2-1}$

$\Rightarrow 90\times 10^{12}\le \dfrac{2^n-1}{1}$

$\Rightarrow 90\times 10^{12}\le 2^n-1$

$\Rightarrow 2^n\ge 90\times 10^{12}+1$

$\Rightarrow \log 2^n\ge \log (90\times 10^{12}+1)$

$\Rightarrow n\times \log 2\ge \log (90\times 10^{12}+1)$

$\Rightarrow n \ge \dfrac{\log (90\times 10^{12}+1)}{\log 2}$

$\Rightarrow n \ge 46.4$

$\Rightarrow n\approx 47$

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3 years ago

Find the cost of papering the four walls of a room 16 meters long, 12 meters broad and 8 meters high with paper 2 meters wide at

Schach [20]

2*8(16+12)=16*28
448 m^2
448/2=224
224*50= Rs 11,200

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3 years ago

If the ratio football players two basketball players at your school is 7:5 then how many basketball players are there if they ar

Levart [38]

Answer:

I think that there are 15 basketball players.

Step-by-step explanation:

If there is a ratio of football to basketball players of 7:5, and there are 21 football players. i just divide 21 by 7 and get 3. so if we multiply the 5 in the ratio by 3 we get 15. so I think the answer is 15. if not then ignore my answer. if so the brainliest please?

8 0

3 years ago

Who created the pie symbol in math

lord [1]

Answer:

William Jones

7 0

3 years ago

Read 2 more answers