All categories

1 year ago

Rich chooses a 4-digit positive integer. He erases one of the digits of this integer. The

Mathematics

1 answer:

tiny-mole [99]1 year ago

4 0

Answer:

*step by step*

Step-by-step explanation:

If he erases one of the digits in a 4-digit number, then only 3 remain, not four.

If he erased the first digit, then it must have been 1-9, so the total is in the range 11 - 19

otherwise the digit could have been 0-9 in which case the total is in the range 10-19

You might be interested in

Solve this quadratic equation using factorization<br> 8xsquared-14x-4=0

Inga [223]

X=2 is the answer for this question.

7 0

2 years ago

Read 2 more answers

Incline Electronics produces three different products in a plant that is open 40 hours per week. Each product requires the follo

Paladinen [302]

Answer:

is thier any way you can take a picture of what the problem is cause alot of the equation are not adding up the way you put them

8 0

2 years ago

The 13th term of a geometric sequence is 16, 384 and the first term is 4. What is the common ratio?

AleksAgata [21]

Answer:

$\large \boxed{2}$

Step-by-step explanation:

The formula for the nth term of a geometric sequence is

aₙ = a₁rⁿ⁻¹

In your geometric sequence, a₁ = 4 and a₁₃ = 16 384.

$\begin{array}{rcl}16384 & = & 4r^{(13 - 1)}}\\16384 & = & 4r^{12}\\4096 & = & r^{12}\\3.6124 & = & 12 \log r\\0.30102 & = & \log r\\r & = & 10^{0.30102}\\ & = & \mathbf{2}\\\end{array}\\\text{The common ratio is $\large \boxed{\mathbf{2}}$}$

Check:

$\begin{array}{rcl}16384 & = & 4(2)^{12}\\16384 & = & 4(4096)\\16384 & = & 16384\\\end{array}$

It checks.

7 0

2 years ago

How do I solve this system of equations by adding, subtracting, or multiplying? <br> x-y=8;x+y=12

Natasha2012 [34]

By substitution.
Get y or x alone then insert it into the other equation solving for one of the two variables. After that substitute ur answer into one of the equations then solve.

7 0

2 years ago

For a right triangle with legs a = 5 and b = 12, use the pythagorean theorem to find the hypotenuse,

kondor19780726 [428]

c = √(a²+b²)

c = √(5²+12²)

c = √(25+144)

c = √169

c = 13 units

7 0

2 years ago