X - the number of pencils
y - the number of pens
She has twice as many pencils as she has pens.
Tom borrows a pen, so she has y-1 pens. Now she has ten less pens than pencils.
Set 2y and y+9 equal to each other:
She has 9 pens.
Answer: {4, 14, 24, 34, 44}
Step-by-step explanation:
A general number can be written as:
aₙ*10ⁿ + ... + a₂*10² + a₁*10¹ + a₀*10⁰ + a₋₁*10⁻¹ ...
Where the a₁ coefficient is the "unit" of a number.
For example, the number 145.2 can be written in this form as:
1*10² + 4*10¹ + 5*10⁰ + 2*10⁻¹
Then the numbers having a 4 in the unit place, will be the numbers that have the digit 4 just at the left of the decimal point.
the set of natural numbers having 4 in the unit place, that also are between 1 and 50 are:
{4, 14, 24, 34, 44}
Answer:
Step-by-step explanation:
This is a right triangle problem. The reference angle is x, the side opposite the reference angle is 32, and the hypotenuse is 58. The trig ratio that relates the side opposite a reference angle to the hypotenuse is the sin. Filling in accordingly:
Because you are looking for a missing angle, you will use your 2nd button and then the sin button to see on your display:
Within the parenthesis enter the 32/58 and you'll get your angle measure. Make sure your calculator is in degree mode, not radian mode!!!
Answer:
There could be many but one of them is
(m+5)(m-9)=0....
Answer:
2.56
Step-by-step explanation:
use the long division method