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nekit [7.7K]
3 years ago
9

5. Which equation is true when the value of x is -2 Helppppp

Mathematics
1 answer:
DENIUS [597]3 years ago
4 0

Answer:

B

Step-by-step explanation:

because 4(x+3)=6x+16 is true

4(-2+3)=6(-2)+16

4(1)= -12+16

4=4

so the equation is true

hope it helped

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7. By selling a bicycle for * 2,850, a shopkeeper gains 14%. If the profit is reduced to 8%, then the selling price
sweet [91]
<h2>Correct option :</h2><h3>= \color{plum}\bold{(b) \: 2,700}</h3><h2>Steps to derive answer :</h2>

Selling price of a bicycle = 2850

Profit percentage = 14%

We know that :

\color{plum}\tt{Cost \:  \:  price =  \frac{Selling \:  \:  price  \:   \times \:  100}{100  \: \:  +  \:  \: profit \: \%} }

Then, the cost price of this bicycle :

= \tt \frac{2850  \times 100}{100 + 14}

= \tt \frac{285000}{114}

=\color{plum} \tt2500

Thus, the cost price of this bicycle = 2500

In another scenario :

Profit percentage = 8%

Cost price of the bicycle = 2500

Then, Selling price will be equal to :

Let x be the selling price of the bicycle.

= \tt2500 =  \frac{\: x \:  \times 100}{100 + 8}

= \tt2500 =  \frac{100x}{108}

=\tt 100x = 2500 \times 108

= \tt100x = 270000

=\tt  x =  \frac{270000}{100}

=\color{plum}\tt x = 2700

Therefore, the selling price with a profit of 8% will be = 2700

6 0
3 years ago
If 12 is replaced with 3 in the following set, what will happen to the value of the range? 28, 45, 12, 34, 36, 45, 19, 20
anzhelika [568]
The range is the number of units between the smallest and largest number. organising your numbers from smallest to largest:

12, 19, 20, 28, 34, 36, 45, 45

in your case 12 is the smallest number of your set. lowering it to 3 would increase the distance between the two numbers, therefore increasing the range

hope that helps :)
3 0
3 years ago
Read 2 more answers
The population of a town increased by 10% per year in 2009, 2010, and 2011. If the population of the town at the beginning of 20
sattari [20]
Assuming that the population follows an exponential function, the it will take the form:
y=a(bˣ)
where:
a=initial value
b=growth factor
x=time
thus plugging our values in the equation we get:
y=40000(1.1ˣ)
thus the population in 2011 when t=3 will be:
y=40000(1.1³)
y=53240
4 0
3 years ago
Mary has saved $24. Each week, she saves $12 more. How much money would she have 32 weeks later?
nikitadnepr [17]

Answer:

$408

Step-by-step explanation:

It’s very simple. Since gets 12 dollars every week, multiply the number of weeks and how much money she gets. Plus the amount she already had.

32 x 12 = 384

384 + 24 = 408

6 0
2 years ago
What is the volume of the pyramid?
Setler [38]


the volume of a pymaird is Volume of a Pyramid<span>A pyramid has a base and triangular sides which rise to meet at the same point. The base may be any polygon such as a square, rectangle, triangle, etc. The general formula for the volume of a pyramid is:Area of the base * Height * 1/3<span>The volume of a pyramid with a rectangular base is equal to:
</span><span>Length_of_base * Width_of_base * Height * 1/3 </span></span>

<span><span>d</span></span>

8 0
4 years ago
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