two-fifths of a number is decreased by three.find the value of the expression if the number is twenty five

1 answer:

7 0

The expression would be written as:

$\frac{2}{5}$ n-3

N is any number. This expression means two-fifths of a number, subtract three. Now substitute 25 for n.

$\frac{2}{5}$ (25)-3
=10-3
=7

You might be interested in

How many quarter pound 1/4 packets can a garden shop make out of 8 pounds of the plant food

Step2247 [10]

32

Sorry, I couldn't really think of a way to explain but the best I can is by multiplying the 4 by 8 to get the answer of 32

8 0

3 years ago

Read 2 more answers

Find the measure of the arc indicated.

ella [17]

A.) 155
123 + 47 + 35 = 205
Subtract 205 with 360 (360 is the measure of a circle) and you will be left with 155°.

7 0

3 years ago

Graph the system of equations. Then determine whether the system has no solution, one solution, or infinitely many solutions. If

natima [27]

Answer:

d) one solution; (4, 1)

Step-by-step explanation:

It often works well to follow problem directions. A graph is attached, showing the one solution to be (4, 1).

_____

You know there will be one solution because the lines have different slopes. Each is in the form ...

y = mx + b

where m is the slope and b is the y-intercept.

The first line has slope -1 and y-intercept +5; the second line has slope 1 and y-intercept -3. The slope is the number of units of "rise" for each unit of "run", so it can be convenient to graph these by starting at the y-intercept and plotting points with those rise and run from the point you know.