All categories

3 years ago

I NEED HELP PLEASE!!!

Mathematics

2 answers:

nikdorinn [45]3 years ago

7 0

Answer:

$36.12

Step-by-step explanation:

56*40%=22.40 amount off

56-22.40=33.60 price of sweater

33.60*7.5%=2.52 tax amount

33.60+2.52=36.12 total amount

Dafna1 [17]3 years ago

5 0

Answer c or $31.08 is correct:)

You might be interested in

The data show prices of light bulbs at a home improvement store, rounded to the nearest dollar. Find the interquartile range (IQ

Yuliya22 [10]

Answer:

The interquartile range (IQR) of the data set is 8.

Step-by-step explanation:

Given:

The data show prices of light bulbs at a home improvement store, rounded to the nearest dollar.

5, 2, 8, 10, 2, 20, 6, 15, 29, 6, 2, 2, 5, 1, 3.

Now, to find the interquartile range (IQR) of the data set.

So, we arrange first in orders:

1,2,2,2,2,3,5,5,6,6,8,10,15,20,29.

Now, to get the median:

1,2,2,2,2,3,5,5,6,6,8,10,15,20,29.

5 is the median.

So, to get the IQR we need to get the Q1 (median of the first half) and Q3 (median of the second half):

Q1 = 1,2,2,2,2,3,5, 5,6,6,8,10,15,20,29

Q1 = 2.

Q3 = 1,2,2,2,2,3,5,5 ,6,6,8,10,15,20,29

Q3 = 10.

Now, to calculate the IQR:

$IQR = Q3-Q1$

$IQR=10-2$

$IQR=8.$

Therefore, the interquartile range (IQR) of the data set is 8.

4 0

3 years ago

Read 2 more answers

164,215 rounded to the nearest ten thousand

Dimas [21]

The answer is 160,000

6 0

3 years ago

Read 2 more answers

a ball is thrown with a slingshot at a velocity of 110ft/sec at an angle of 20 degrees above the ground from a height of 4.5 ft.

satela [25.4K]

Answer:

$t=2.47\ s$

Step-by-step explanation:

The equation that models the height of the ball in feet as a function of time is

$h(t) = h_0 + s_0t -16t ^ 2$

Where $h_0$ is the initial height, $s_0$ is the initial velocity and t is the time in seconds.

We know that the initial height is:

$h_0 = 4.5\ ft$

The initial speed is:

$s_0 = 110sin(20\°)\\\\s_0 = 37.62\ ft/s$

So the equation is:

$h (t) = 4.5 + 37.62t -16t ^ 2$

The ball hits the ground when when $h(t) = 0$

$4.5 + 37.62t -16t ^ 2 = 0$

We use the quadratic formula to solve the equation for t

For a quadratic equation of the form

$at^2 +bt + c$

The quadratic formula is:

$t=\frac{-b\±\sqrt{b^2 -4ac}}{2a}$

In this case

$a= -16\\\\b=37.62\\\\c=4.5$

Therefore

$t=\frac{-37.62\±\sqrt{(37.62)^2 -4(-16)(4.5)}}{2(-16)}$

$t_1=-0.114\ s\\\\t_2=2.47\ s$

We take the positive solution.

Finally the ball takes 2.47 seconds to touch the ground

4 0

3 years ago

Help can someone help me find value of X ♡ I would appreciate it ;)

kotykmax [81]

Answer:

4x°+16°=7x° – 20°

16°+20°=7x°+4x°

36°=11x°

36/11=x°

X°= 3.27272727

4 0

2 years ago

Read 2 more answers

How do you substitute x+y=2 3x+2y=5

Monica [59]

Here's how you solve this. So, x+y=2, right? Let's isolate x. x+y-y=2-y. x=2-y. NOW, if x=2-y, in 3x+2y=5, we can REPLACE x with 2-y and use it to solve for y! 3x+2y=5. 3(2-y)+2y=5. (3*2)+(3*-y)+2y=5. 6+(-3y)+2y=5. 6+(-y)=5. 6+(-y)-6=5-6. -y=-1. -y/-1=-1/-1. y=1.

So, if y=1, we can substitute that back into either equation--but let's go with the easier one, x+y=2. x+1=2. x+1-1=2-1. x=1. 1+1=2, so that works; let's check the other equation. 3(1)+2(1)=5. 3+2=5. 5=5. That's correct!

Answer: x=1, y=1

4 0

3 years ago

Read 2 more answers