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dybincka [34]
2 years ago
14

What is the first step in finding the unit price on a box of 20 pencils?

Mathematics
1 answer:
olga55 [171]2 years ago
7 0

You would need to know the cost of the box of 20, then you would divide the total cost by the number of pencils in the box. This would give you the cost of one pencil - which is the unit cost.


Example:

Lets say the box of 20 pencils cost $10.


Divide the total cost by the number of pencils:

10 / 20 = 0.50 - This means each pencil cost 50 cents, so the unit cost would be 50 cents per pencil.

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Evaluate -3x 3 - 4x for x = -1.
Ksju [112]
Plug in -1 for x the solve the equation. 3 * -1 -4(-1) which equals 7
7 0
3 years ago
Find m∠3 if m∠5=130 and m∠4 =70
arlik [135]
M∠5=130 <span>and m∠4 =70
</span><span>so
m<2 = 180 - m<5 
m<2 = 180 - 130
m<2 = 50

m<3 = 180 - (m<2  + m<4)
</span>m<3 = 180 - (50+70)
m<3 = 180 - 120
m<3 = 60
<span>



</span>
3 0
3 years ago
Read 2 more answers
The face of a clock is divided into 12 equal parts. The radius of the clock face is 6 inches. Assume the hands of the clock will
irina [24]
<h2>Answer:</h2><h2>Option (i),(iii), (v) are correct</h2>

Step-by-step explanation:

Given, the face of a clock is divided into 12 equal parts.

Angle of each part = \frac{360}{12} = 30°

(i) When one hand points at 2 and the other points at 4, this is can be divided into two parts, 2 to 3 and 3 to 4.

The angle formed = 2 (30) = 60°

Option (i) is correct

(ii) The circumference of the clock is ,

Circumference of circle = 2πr,

where r is the radius = 6 and π = 3.14.

Substituting the values in the formula, we get

Circumference of circle = 37.68.

Option (ii) is wrong.

(iii) With one hand at 5 and the other at 10, this is 5 parts

The angle formed= 30(5) = 150°.  

The arc length =\frac{150}{360}(37.68) = 15.7

Option (iii) is correct

(iv) When one hand points at 1 and the other points at 9, this is 4 parts,

30(4) = 120°.  T

Option (iv) is wrong

(v) The length of the minor arc from 11 to 2, this is 3 parts

3(30) = 90°  

minor arc from 7 to 10 is 3(30) = 90°  

Option (v) is correct

6 0
3 years ago
Read 2 more answers
E graph shows the altitude of a helicopter over time.
DaniilM [7]

Let

x-------> the time

y-------> the altitude of a helicopter

Step 1

<u>Find the slope of the line</u>

we know that

the slope m of the line between two points is equal to

m=\frac{(y2-y1)}{(x2-x1)}

we have

(x1,y1)=(0,10,000)\\(x2,y2)=(15,4,000)

substitute in the formula

m=\frac{(4,000-10,000)}{(15-0)}

m=\frac{(-6,000)}{(15)}

m=-400\frac{feet}{minute}

therefore

<u>the answer is the option </u>

The slope is -400 . This means that the helicopter descends 400 ft each minute.


4 0
3 years ago
Why is 2×3/4 less than two
Nata [24]

Answer:

2x3 = 6, 6/4 = 3/2 = 1.5 which is less than 2. 1.5 < 2.

Step-by-step explanation:

4 0
2 years ago
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