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castortr0y [4]
1 year ago
14

If 20 assemblers can complete a certain job in 9 hours, how long will the same job take if the number of assemblers is cut back

to 15?​
Mathematics
1 answer:
adoni [48]1 year ago
8 0

Answer:

6.75

Step-by-step explanation:

use the proportion:

1)  20:9=15:x

2)  20x=135

3)  x=6.75

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Find the distance between the two points.
Law Incorporation [45]

Answer:  89 will go in the box

This means the exact distance between the two given points is \sqrt{89} which approximates to roughly 9.4339811

===========================================================

Explanation:

To get that answer, we can apply the distance formula

(x1,y1) = (-1,-5) is the first point

(x2,y2) = (4,3) is the second point

Plug the coordinates into the distance formula

d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}\\\\d = \sqrt{(-1-4)^2 + (-5-3)^2}\\\\d = \sqrt{(-5)^2 + (-8)^2}\\\\d = \sqrt{25 + 64}\\\\d = \sqrt{89}\\\\d \approx 9.4339811\\\\

--------------------------

Alternative Method:

You could also form a right triangle by adding the point (4, -5). The horizontal leg goes from (-1,-5) to (4,-5) which is a span of 5 units. The vertical leg goes from (4,-5) to (4,3) which is a span of 8 units. The hypotenuse is from (-1,-5) to (4,3) which is the distance we want to find.

After forming the triangle and determining the leg lengths, use the pythagorean theorem and you should get \sqrt{89} as the length of the hypotenuse. As you can probably guess, the distance formula is effectively a slight rephrasing the pythagorean theorem.

8 0
3 years ago
For the polynomial function ƒ(x) = x4 − 16x2, find the zeros. Then determine the multiplicity at each zero and state whether the
ddd [48]
Our function f(x) can be rewritten if we factor out a common x^2 from each term:
f(x) = x^2(x^2-16)
Now inside the parentheses we have a polynomial of the form a^2 - b^2, or the difference of two perfect squares, which can be factored as (a+b)(a-b) so we have:
f(x)=x^2(x-4)(x+4)
Setting our function equal to zero gives us the roots x = 0, x = 4, and x = -4.
The multiplicity of the root zero is two since it occurs twice, and the others are one since they occur only once. If you graph the function you can see that it will only touch the x-axis at x = 0, but will cross the x-axis at x = 4 and x = -4.
5 0
4 years ago
Heights taxi service charges $1.50 for the first mile and $.90 for each additional mile. How far could she go for $20 if she giv
joja [24]
$20 - $2 tip = $18

$18 ÷ $1.50 = 12 miles
3 0
4 years ago
Anyone know what unit rate is ????
Nitella [24]
I unit rate is a normally a fraction with a denominator of one. 

How to find a unit rate...

50 miles / 5 hours ÷ 5 (divide by the denominator) = 10 miles/1 hour
10 miles / 1 hour is a unit rate.

HOPE THIS HELPED :)
3 0
4 years ago
Read 2 more answers
Write the number for twenty-nine million seven thousand.​
bija089 [108]

Answer:

2907000

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
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