1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
antoniya [11.8K]
3 years ago
12

li needs 15 pieces of string each 1/2 of a inch long. she cut a 6-inch piece of string long . how many more pieces of string doe

s she need ?
Mathematics
2 answers:
Lilit [14]3 years ago
8 0
15 pieces times 0.5 equals 7.5 inches. 7.5 in-6in= 1.5 inches. 1.5 inches/0.5 inches= 3 pieces. She would need 3 more pieces.
faltersainse [42]3 years ago
4 0

Answer: 3 pieces of string.


Step-by-step explanation:

Given: Li needs 15 pieces of string each 1/2 inch long.

Thus, total string required by Li =15\times\frac{1}{2}\text{inch}=7.5\text{inches}

As she cut a 6-inch piece of string .

So the length of string she needs=7.5-6=1.5

Since, each piece of string has length 1/2 inch or 0.5 inch, then the number of pieces she need =\frac{1.5}{0.5}=3

Hence, she need 3 pieces of string.

You might be interested in
What are 5 numbers that have 5, 11, and 2 as prime factors
Firdavs [7]
110, 220, 330, 440, 550

hope this helps
5 0
3 years ago
For the equation, decide if it is always true or never true.<br><br> x + 1/2 = x − 1/2
Lorico [155]

Answer:

Step-by-step explanation:

its false

3 0
2 years ago
Read 2 more answers
Estimate the sum to the nearest whole number: 0.870 + 3.2<br> A) 2 <br> B) 3 <br> C) 4 <br> D) 5
vfiekz [6]

the answer is C) four

6 0
2 years ago
In circle R with QRS=90 and QR= 3 units find the length of arc QS round to the nearest hundredth
luda_lava [24]

Hello, I Am BrotherEye

Answer:

27.92 units

Step-by-step explanation:

Radius (qr) = r = 16 units

<QŘS = θ = 82°

Length of an arc = (Θ / 360) * 2πr

L = (θ / 360) *2πr

L = (82 / 360) * 2π * 16

L = 0.2777 * 100.53

L = 27.917 units

L = 27.92 unit

Best Of Luck

~

BrotherEye

6 0
2 years ago
Write the equation of a sine or cosine function to describe the graph.
juin [17]

Step-by-step explanation:

The equation of a trigonometric function is

y = a  \sin(bx + c) + d

or

y = a \: cos(bx + c)  + d

Let define some variables,

D is the midline, this refers to the midpoint of the highest y value and lowest y value. Some textbooks call it the vertical translations but it is the same thing.

A is the amplitude. The amplitude is the distance from the midline to the highest y value. Some distance is non negative, the formula for the amplitude is

|a|

The period is how often the wave repeats itself on a interval.

Period can't be negative so the formula for period is

\frac{2 \pi}{ |b| }

To find the period, look at the extreme points.

The phase shift tells us if the sinusoid have been shifted to the right or left. The formula for the phase shift

bx + c = 0

Solving for x gives us

x =  \frac{  - c}{b}

If our x is negative, we have a phase shift to the right

If our x is Positve, we have a phase shift to the left.

Let solve this equation, Let use Sine since sin(0)=0,

The smallest y value here is 0, and the highest is 2, so the amplitude is 1.

d = 1

Next, the distance from the max to the midline is 1, as well the min to the midline is also 1.

So

a = 1

We have minimum at 0, and 8, so our period is 8.

\frac{2\pi}{b}  = 8

Solve for b,

\frac{\pi}{4}  = b

Plug this in the equation.

1 \sin( \frac{\pi}{4} x)  +

y =  \sin( \frac{\pi}{4} x)  + 1

The graph passes through (4,2) so let see if that holds true for our equation

2 =  \sin( \frac{\pi}{4} (4))  + 1

2 =  \sin(\pi)  + 1

2 = 0 + 1

2 = 1

This doesn't hold true, so we must have a phase shift

Notice that

\sin( \frac{\pi}{2} )  = 1

So if we shift this pi/2 to the right, we can get our equation to be true.

y =  \sin( \frac{\pi}{4} x -  \frac{\pi}{2} )  + 1

This equation works so our equation is

y =  \sin( \frac{\pi}{4} x -  \frac{\pi}{2} )  + 1

3 0
2 years ago
Other questions:
  • 4 = m/3 - 1<br><br> What is m equal to?
    11·1 answer
  • Which Statement is true ?
    10·1 answer
  • a chocolate chip cookie has 10 more calories than an ice cream cone. together they have a total of 310 calories.
    12·1 answer
  • One of the rooms is in the shape of the rectangle. It is a gift shop. 25% of the gift shop will be dedicated for the cashier and
    10·1 answer
  • On Geometry, How can I do a 12-Pointed star?
    5·1 answer
  • Write the linear equation
    15·1 answer
  • Help! will vote brainliest first answer
    9·2 answers
  • If f(1) = T and f(n) = 4f(n − 1) then find the value of f(5).
    6·2 answers
  • X y<br> −1 −10<br> 3 14<br><br> y= ?x + (?)
    7·1 answer
  • PLEASE HELP ME GIVING 30 POINTS!!!
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!