PLEASE HELP MEEEEEE I DONT UNDERSTAND

Mathematics

1 answer:

melisa1 [442]3 years ago

4 0

Multiply the price by 0.09, then add that number to the price

47.25 x 0.09 = 4.25

47.25 + 4.25 = 51.50

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Solve for x 5 - 2x^2 = -15

neonofarm [45]

The answer is 3.16227766

4 0

3 years ago

Solve for x 4^x-2=256

salantis [7]

We can do this problem using two ways....
Let me show you both methods.

Method 1: "Without using logs"

$4^{x-2}=256\\\\ 4^{x-2}=4^4\ \ \ \ \ |\because 4^4 \ $is the same as 256$

Now, since both sides of the equation have same base and they equal each other, then their exponent must be equal to each other. So, we equal their exponents.

After equaling the exponents, we get,
$x - 2 = 4 \\\\ x=4+2 \\\\ \boxed{x = 6} \Leftarrow $ This is your answer!!$

Now,
Method 2: "Using Logs"

$4^{x-2}=256 \\\\ ~~~~~~~\Downarrow ~~~~~~ is\ the\ same\ thing\ as\ saying \\\\$log\ _4\ 256 =x-2 \\\\ Now,\ using\ the\ log\ property\ log_AB= \frac{log_cA}{log_cB}, \ we \ get, \\\\ \frac{log_{10}256}{log_{10}4}=x-2 \\\\ 4=x-2 \\\\ 4+2=x\\\\ 6=x \\\\ \boxed{x=6} \Leftarrow $This is your answer$

So, either way we get x= 6

8 0

3 years ago

Read 2 more answers

1. Find the area of the given circle. Round to the nearest tenth. *theres a picture of a circle and the radius is 3.5*

Alexandra [31]

I hope this helps you

area formula=pi.r^2

1) Area=3,14. (3,5)^2

Area=38,465

Area nearest 38,5

2) Circumference=2pi.r

Circumference=2.3,14.3,5

Circumference=21,98

Circumference nearest 22

7 0

4 years ago

A cyclist travels at an average speed of 18 mph for 2 hours. How far did she travel in miles?

olya-2409 [2.1K]

Answer:

Step-by-step explanation:

18 miles per hour so for 2 hours which is double, she should have traveled 36 miles.

Good Luck!

5 0

3 years ago

A set of furniture contains one table and four chairs How much does one chair cost, if the table costs 80 dollars and the whole

ankoles [38]

c = chair

200 = 80 + 4c

Subtract 80 from 200

120 = 4c

Divide 120 by 4

30 = c

200 = 80 + 4(30)

One chair costs $30

8 0

3 years ago