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3 years ago

It’s hard may anyone help me answer this question

Mathematics

1 answer:

damaskus [11]3 years ago

5 0

Answer:

D. $53.76

Step-by-step explanation:

When calculating discounts and sales tax, you need to first change your percentages to decimals by dividing each by 100:

20%/100 = 0.2

5%/100 = 0.05

Since the shoes are at a 20% discount, you will only pay 80% of the original amount, or: $64.00 x 0.8 = $51.20

However, you also need to pay a 5% sales tax, in addition to the sales price, so you can take the discounted amount and multiply:

$51.20 x 1.05 = $53.76 total cost

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WILL DO ABSOLUTELY ANYTHING FOR THIS ONE HELP ASAP TIMES

Rina8888 [55]

Given:

The graph of a function $y=h(x)$ .

To find:

The interval where $h(x)>0$ .

Solution:

From the given graph graph it is clear that, the function before x=0 and after x=3.6 lies above the x-axis. So, $h(x)>0$ for $x$ and $x>3.6$ .

The function between x=0 and x=3.6 lies below the x-axis. So, $h(x)$ for $0$ .

Now,

For $-1$ , the graph of h(x) is above the x-axis. So, $h(x)>0$ .

For $0$ , the graph of h(x) is below the x-axis. So, $h(x)$ .

For $1$ , the graph of h(x) is below the x-axis. So, $h(x)$ .

Only for the interval $-1$ , we get $h(x)>0$ .

Therefore, the correct option is A.

3 0

3 years ago

Help me find the arc length of this. Thank you.

BabaBlast [244]

The red chord is a diameter of the circle, so the length of the blue arc is half the circle's circumference.

The circumference of a circle with diameter $d$ is $\pi d$ , so the circle has circumference $8\pi$ , and so the arc has length $4\pi$ .

4 0

4 years ago

What us9/2 written ad mixed numbers

kogti [31]

Answer:

4 and 1/2

Step-by-step explanation:

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7 0

4 years ago

The sum of three numbers is 9.The sum of twice the first number, 4times the second number, and 5times the third number is 25.T

Karo-lina-s [1.5K]

Answer:

x = 6, y = 2, z = 1

Step-by-step explanation:

This is a system of 3 equations with 3 unknowns. We need to first write the equations given the information and then solve them.

The first equation is the sum of 3 numbers, all unknown, is 9:

x + y + z = 9

The second equation is again a sum:

2x + 4y + 5z = 25

The third equation is the difference of only the first 2 numbers:

6x - y = 34

We will start with that last equation and solve it for y:

-y = -6x + 34 so

y = 6x - 34

Now we will go back to the first 2 equations and sub that 6x-34 in for each y. The first equation then becomes:

x + 6x - 34 + z = 9 and 7x + z = 43

The second equation then becomes:

2x + 4(6x - 34) + 5z = 25 and 26x + 5z = 161

We will solve those 2 bold equations by addition/elimination:

7x + z = 43

26x + 5z = 161

Multiply the first equation through by -5 to get rid of the z's. That equation then becomes:

-35x - 5z = -215

26x + 5z = 161

Adding straight down the columns gives you

-9x = -54 so

x = 6

Now we can plug that x value of 6 into any equation that has an x in it:

26(6) + 5z = 161 and

156 + 5z = 161 and

5z = 5 so

z = 1.

We can use the x value only again in the equation we solved for y in the beginning:

y = 6(6) - 34 so

y = 36 - 34 and

y = 2

The solution to this system in coordinate form is

(6, 2, 1)

5 0

4 years ago

Can someone please answer. There is one problem. There's a picture. Thank you!

eduard

Third option. The sin wave travels from an amplitude of -1 to 1.

8 0

4 years ago