A teacher has 100 pencils in a cup. 16 are more sharp than dull. How many are dull and how many are sharp?

1 answer:

8 0

X = dull pencils
y = sharp pencils
x + y = 100
y = x + 16 ~~Plug this back into your original x+y equation.
x+x+16=100 ==> 2x = 84 ==> x = 42. Plug this back into the y = equation
y = 42 + 16 ==> y = 58.

42 Dull, 58 sharp.

You might be interested in

The hypotenuse of a right triangle is twice the length of one of its legs. Th length of the other leg is three feet. Find the le

shutvik [7]

Step-by-step explanation:

go for it this is your questions answer

3 0

3 years ago

Please help math

Naddika [18.5K]

$\displaystyle\\
15(2a - 2) = 5(a^2 -1) \\ \\ 
30a - 30 = 5a^2-5\\\\
-5a^2 + 30a -30 + 5 =0\\\\
-5a^2 + 30a -25 =0 ~~~~~\Big| \times (-1) \\\\
5a^2 - 30a +25 = 0~~~~~\Big| : 5 \\\\
a^2 - 6a +5 = 0 \\ \\ 
a_{12}= \frac{-b\pm \sqrt{b^2-4ac}}{2a}= \frac{6\pm \sqrt{36-20}}{2}= \frac{6\pm \sqrt{16}}{2}=\frac{6\pm 4}{2}= \boxed{3\pm 2} \\ \\ 
a_1 = 3+ 2 = \boxed{5}\\\\
a_2 = 3-2 = \boxed{1}$

8 0

3 years ago

Read 2 more answers

The quotient of x and 3

ddd [48]

The quotient of x and three is 3/x. quotient is a division term and when the dividend is divided by the divisor, the result is a quotient.

8 0

3 years ago

Solve - 2/5x is less than or equal to 20

sashaice [31]

Answer:

x is less than or equal to 0

Step-by-step explanation:

- you need to multiply both sides of the inequality by 5/2

- then you reduce the numbers with the greatest common factor 5

- then you reduce the numbers with the greatest common factor 2

- any expression multiplied by 0 equals 0

- so you get x is less than or equal to 0

^^^ hope this helps! :)

8 0

3 years ago

Please help me and I will make you the brainiest

wlad13 [49]

Answer:

y=a-4 divided 3-a and a cut so remember 4divided3 so, y= 1.33

Step-by-step explanation:

7 0

3 years ago