When checking you answer to an addition or subraction problem, use the _______ operation? OPPOSITE

Mathematics

1 answer:

hodyreva [135]3 years ago

3 0

It is the opposite. There is nothing called same operation...

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Eva is building a house. The basement floor is at -15 feet. The roof of the house is above the ground 25 feet. Write an inequali

Marysya12 [62]

lack of smoothness or regularity in a surface.
difference in size, degree, circumstances
lack of equality
the relation between two expressions that are not equal, employing a sign such as ≠ “not equal to,” > “greater than,” or < “less than.”

5 0

3 years ago

Jason spent $46.42 on dinner at hello tokyo. he also spent $21.05 on gas for the car. if his bank account had $60.00, what is hi

AleksandrR [38]

It would be: $60.00 - ($46.42+$21.05)

$60.00 - $67.47 = -$7.47

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3 years ago

In the email data set in Chapter 1, the number variable de- scribed whether no number (labeled none), only one or more small num

monitta

Answer:

These outcomes are disjoint.

Step-by-step explanation:

(a) Are the outcomes none, small, and big disjoint

If they are disjoint, the sum of the total number of each has to be equals to the number of emails.

We have:

3921 emails.

549 with no numbers.

2827 with only one or more small numbers

545 had at least one big number.

549 + 2827 + 545 = 3921

Since the sum is equals to the number of emails, these outcomes are disjoint.

5 0

3 years ago

Oil that costs 22.50/barrel is mixed with oil that costs 35.00/barrel. How many barrels of each oil should be included in 1250 b

timama [110]

So 22.5 per barrel

so 22.5
x represents the number of 22.5 barrels

y represents the number of 35 barrels

so
x+y=1250

then find the total cost
1250 barrels
27.5 per so mutiply by 1250 and get 34375 total cost

22.5x+35y=34375

we have 2 senctances
x+y=1250
22.5x+35y=34375

elimination
mulitply first equation by -35 to clear y
-35x-35y=-43750
add to second equation
-35x-35y=-43750
22.5x+35y=34375 +
-12.5x+0y=-9375
-12.5x=-9375
multiply -1
12.5x=9375
divie both sides by 12.5
x=750

subsitute
x+y=1250
750+y=1250
subtract 750
y=500

750 barrells of the 22.5 oil should be included and
500 barrells of the 35 oil should be included

4 0

3 years ago

in Youngstown, the population reached 4420 people in 1993. in 1998 the population was 5600 residents. what was the population in

Julli [10]

5600 - 4420 = 1180....so there is a difference of 1180 in a period of (1998 - 1993) = 5 yrs.

1180/5 = 236 people per yr

so in 1998 the population was 5600.....in 2000 (2 yrs later) the population would be : 5600 + 236(2) = 5600 + 472 = 6072 <==

4 0

4 years ago