Please help me !!!!!!!

When testing for current in a cable with eight color-coded wires, the author used a meter to test five wires at a time. How man

balu736 [363]

Answer:

56 different tests

Step-by-step explanation:

Given:

Number of wires available (n) = 8

Number of wires taken at a time for testing (r) = 5

In order to find the number of different tests required for every possible pairing of five wires, we need to find the combination rather than their permutation as order of wires doesn't disturb the testing.

So, finding the combination of 5 pairs of wires from a total of 8 wires is given as:

$^nC_r=\frac{n!}{r!(n-r)!}$

Plug in the given values and solve. This gives,

$^8C_5=\frac{8!}{5!(8-5)!}\\\\^8C_5=\frac{8\times 7\times 6\times 5!}{5!\times 3\times2\times1}\\\\^8C_5=56$

Therefore, 56 different tests are required for every possible pairing of five wires.

6 0

3 years ago

This Question: 1 pt

shtirl [24]

50 miles apart
if 1 = 10 then 5 = 50 using the tens rule

3 0

3 years ago

36x+32=32x-36<br> whats the value of x

bulgar [2K]

Answer:

$x = -17$

Step-by-step explanation:

<u>Step 1: Subtract 32x from both sides</u>

$36x + 32 - 32x = 32x - 36 - 32x$

$4x + 32 = -36$

<u>Step 2: Subtract 32 from both sides</u>

<u /> $4x + 32 - 32 = -36 - 32$

$4x = -68$

<u>Step 3: Divide both sides by 4</u>

<u /> $4x / 4 = -68 / 4$

$x = -17$

Answer: $x = -17$

8 0

4 years ago

Please help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

IRISSAK [1]

Answer:

4 packages

Step-by-step explanation:

450 can be divided by 100 4 whole times, the extra cards cannot be added into a package

7 0

3 years ago

Read 2 more answers

Determine the number of real solutions each quadratic equation has. y = 12x2 - 9x 4 real solution(s) 10x y = -x2 2 real solution

nordsb [41]

All the given equations have 2 real solutions except for equation 4 which has only one real root.

<h3>What is a quadratic equation?</h3>

A quadratic equation is the second-order degree algebraic expression in a variable. the standard form of this expression is ax² + bx + c = 0 where a. b are coefficients and x is the variable and c is a constant.

The given quadratic equation

$y = 12x^2 - 9x+ 4$