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solmaris [256]
3 years ago
13

A freight train completes its journey of 150 miles 1 hour earlier if its original speed is increased by 5 miles/hour. What is th

e train’s original speed?
Mathematics
1 answer:
e-lub [12.9K]3 years ago
4 0
25 mph the train is accelerating at a constant rate<span />
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What are the steps used to transform the general form of the equation of a circle to standard form
Bezzdna [24]

Answer:

Step-by-step explanation:

Convert the equation of a circle in general form shown below into standard form. Find the center and radius of the circle. Group the x 's and y 's together. Consider the x2 and x terms only. Complete the square on these terms. Replace the x2 and x terms with a squared bracket.

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3 years ago
- The improper fraction of 12 1 1 is....... a 4. 3 b 2 3 5 3​
Ainat [17]

Answer:

Mixed fraction = whole × denominator + numerator.

this formula converts mixed to improper fraction.

So, 1 × 3 + 1 = 4 is numerator.

Denominator is 3 which is same.

So, answer is

A. \frac{4}{3}

<h3><em>Plz </em><em>mrk</em><em> me</em><em> brainliest</em><em>.</em></h3>
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3 years ago
Evaluate C=2 pi r for r=8 <br> A. C=10 pi <br> B. C=16 pi<br> C. C=28 pi<br> D. C=16
Brrunno [24]

Answer:

If `r` and `R` and the respective radii of the smaller and the bigger semi-circles then the area of the shaded portion in the given figure is: (FIGURE) `pir^2\ s qdotu n i t s` (b) `piR^2-pir^2\ s qdotu n i t s` (c) `piR^2+pir^2\ s qdotu n i t s` (d) `piR^2\ s qdotu n i t s`

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
The Precision Scientific Instrument Company manufactures thermometers that are supposed to give readings of 0 degrees Celcius at
enot [183]

Answer:

Step-by-step explanation:

Given that reading on thermometer is N (0,1)

7% of the thermometers are rejected because they have readings that are too low, but all other thermometers are acceptable

This implies that we have to find out the 7th percentile.

i.e. Z score = -1.475

Hence the temperature for cutoff is below -1.475 degrees.

the temperature reading corresponding to the given information.=-1.475 deg

6 0
3 years ago
Use the drawing tool(s) to form the correct answer on the provided number line. Consider the functions below. Represent the inte
Leno4ka [110]

In order to solve this problem, we will need a little more information, for example, we need to know what the functions are. Let's say the problem looks like this:

Use the drawing tool(s) to form the correct answer on the provided number line. Consider the functions below.

f(x)=|3x|-3

and

g(x)=-x^{2}+8x-5

Represent the interval where both functions are increasing on the number line provided.

Answer:

See attached picture

Step-by-step explanation:

Since this problem is posted on the algebra section of Brainly, I assume we will need to make use of an algebraic approach to solve this. Basically, the idea is to graph the functions and find the x-values for which both functions increas. In order to graph the functions, we will need to build a table with points for each of the functions. In order to graph the functions you need to pick the x-values you wish and evaluate them in the given functions. (See attached pictures)

Once you got the desired points, you can plot them in the coordinate axis and find the x-values for which both graphs will be increasing. If we take a close look at the graphs we can see the f(x) graph increases in the interval:

(0,∞)

and the g(x) graph increases in the interval:

(-∞,4)

so the interval in which both graphs are increasing will be the region where both intervals cross each other, which will be (0,4)

so that's the interval we draw on our number line. (see attached picture.

7 0
3 years ago
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