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Orlov [11]
3 years ago
11

Find the difference between the products of 2.5 and 7.5 and the sum of 2.75 and 9.55​

Mathematics
1 answer:
faust18 [17]3 years ago
5 0

Answer:

Step-by-step explanation:

The product of 2.5 and 7.5 is (2.5)(7.5)=(5/2)(15/2)=75/4=18.75.

The sum of 2.75 and 9.55 is 2.75+9.55=(2+9)+(0.75+0.55)=11+1.3=12.3.

The difference between these is 18.75-12.3=(18-12)+(0.75-0.3)=6+0.45=6.45.

So, the answer is \boxed{6.45} and we're done!

You might be interested in
Find the equation of the line through ( - 10, - 8) that is perpendicular to the line through (10,6), (5,5).
Furkat [3]

Answer:

y=-5x-58

Step-by-step explanation:

The equation of a line in slope-intercept form is y=mx+b where m is the slope and b is the y-intercept.

Perpendicular lines have opposite reciprocal slopes.

Anyways we need to find the slope of the line going through (10,6) and (5,5).

To find the slope, we are going to line up the points vertically and subtract vertically, then put 2nd difference over 1st difference. Like so:

 (  10   ,   6)

- (   5   ,   5)

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

    5         1

So the slope of the line through (10,6) and (5,5) is 1/5.

The slope of a line that is perpendicular will be the opposite reciprocal of 1/5.

The opposite reciprocal of 1/5 is -5.

The line we are looking for is y=-5x+b where we need to find the y-intercept b.

y=-5x+b goes through (-10,-8)

So we can use (x,y)=(-10,-8) to find b in y=-5x+b.

y=-5x+b with (x,y)=(-10,-8)

-8=-5(-10)+b

-8=50+b

Subtract 50 on both sides:

-8-50=b

-58=b

So the equation is y=-5x-58

4 0
3 years ago
Somebody help with both questions
Minchanka [31]
1. X=5
2. I think I’m not sure is - 5.04
8 0
3 years ago
Yolanda is buying supplies for school. She buys n package of pencils at $1.40 per package and m pads of paper at $1.20 each. Wha
Oxana [17]
1.4n represents the price and number of packages of pencils. 1.2m represents the number of paper pads and the price
6 0
3 years ago
???whats the answers
Aleks04 [339]
11, 3, -3, -12
Hope this helps :)
3 0
3 years ago
I need help please 25 points for whoever helps me
34kurt
Yuto is correct because he isolated the variable correctly and reversed the inequality symbol.

x < 3
3 0
3 years ago
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