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1 year ago

A machine produces 225 bolts in 24 minutes. At the same rate, how many bolts would be produced in 40 minutes?

2 answers:

8 0

Heyo!

Given ,

225 bolts in 24 minutes

So in a minute it can produce = 225/24 = 9.3 = 9 bolts

In 40 minutes it can produce = 9 x 40 = 360 bolts

likoan [24]1 year ago

7 0

Answer: 375 bolts

Step-by-step explanation:

Just do 225*(40/24)

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Identify the percent change <br><br> 28 seconds to 23 seconds

Zarrin [17]

Percent change=change/original times 100
chane=28-23=5
oriiginal=28

percent change=5/28 times 100
0.178 times 100
17.8

about 18% change

4 0

3 years ago

What is the equation of the line of the best fit for the following data? Round to the slope and y-intercept of the line to three

BigorU [14]

Answer:

D. $y=-0.927x+13.634$

Step-by-step explanation:

We graph the points on the graph. The graph is attached.

Let us take two points (1, 14) and (15, 1), and calculate the slope $m$ between them <em>(we choose these points because the line passing through them will be the best fit for all points) </em>

$m=\frac{14-1}{1-15} =\frac{13}{-14} =-0.9286$

Thus we have the equation

$y=-0.9286x+b$

Let us now calculate $b$ from the point $(1,14)$

$14=-0.9286(1)+b$

$b=14.9286$

So the equation we get is

$y=-0.9286x+14.9286$

Let us now turn to the choices given and see which choice is closest to our equation: we see that choice D. $y=-0.927x+13.634$ is the closest one, so we pick it.

4 0

2 years ago

Use the drop-down menus to complete the statements about factoring 14x2 + 6x – 7x – 3 by grouping. The GCF of the group (14x2 –

Yuliya22 [10]

14 x² + 6 x - 7 x - 3 =
= ( 14 x² - 7 x ) + ( 6 x - 3 ) =
= 7 x ( 2 x - 1 ) + 3 ( 2 x - 1 ) =
= ( 2 x - 1 ) ( 7 x + 3 )
Answer:
1. GCF of the group ( 6 x - 3 ) is 3.
2. The common binomial factor is 2 x - 1.
3. The factored expression is: ( 2 x - 1 ) ( 7 x + 3 ).

8 0

2 years ago

Read 2 more answers

Use the standard normal distribution to find P(-1.23 Sz<2.12).

matrenka [14]

Answer:

(d) 0.8736

Step-by-step explanation:

Unless you have a table of the normal distribution available, this is a calculator problem. Your calculator, or any spreadsheet, can tell you the probability is ...

P(-1.23 ≤ z ≤ 2.12) ≈ 0.8736

5 0

1 year ago

Is the answer 4? I’m not sure if it’s right

kkurt [141]

Answer:

yes im pretty sure correct me if im wrong. Good luck!!!!!

Step-by-step explanation:

4 0

2 years ago