Which expression has a negative value? 7+3(-4)(2) -2[12/(-3)] (15-7)-(9/3) -5[7+(-14)]-30

Mathematics

2 answers:

denis23 [38]3 years ago

4 0

Answer:

7+3(-4)(2) -2[12/(-3)] (15-7)-(9/3) -5[7+(-14)]-30= 49

Step-by-step explanation:

andrew11 [14]3 years ago

4 0

Answer

7+3(-4)(2)

Step-by-step explanation:

As a mutually exclusive question (only one of these four can have the negative value), the other three would be default have non-negative values (either positive or 0).

Solving 7+3(-4)(2) requires remembering order of operations, which the acronym P.E.M.D.A.S. is useful for (Parenthesis, Exponents, Multiplication/Division, Addition/Subtraction) - between Multiplication and Division, it depends on the order from left to right, the same is true for Addition and Subtraction.

7 + 3(-4)(2) becomes 7 + (-12)(2), which is 7 + (-24). Adding a negative number to a number is the same as subtraction, so 7 + (-24) becomes 7 - 24, which is -17. -17 is less than 0.

For the second problem, -2[12/(-3)] becomes -2(-4), which is +8

For the third problem, (15-7)-(9/3) is 8 - 3, which is +5

For the fourth problem, -5(7+(-14))-30 becomes -5(-7) - 30, which becomes 35 - 30. This equals +5

You might be interested in

Edgar Anderson earns $300 per week plus 15% commission on all sales over 1,000. if Mr. Anderson's sales for one week are 2,500 w

vredina [299]

Since he only makes commission on sales over $1000, he makes commission on $1500 (we find this by doing 2500-1000.) His commission is 15%, so find 15% of $1500:
$.15*1500=225$
So we know how makes $225 in commission.

Now we need to add this to his fixed pay to get his total pay:
$225+300=525$
So his total pay is $525, which is answer 'a'

Hope I helped, and let me know if you have any questions :)

3 0

3 years ago

How do you simplify -5x-x+14x-3x

jolli1 [7]

You'd have no problem simplifying that expression if it said

-(5 cows) - (1 cow) + ( 14 cows) - (3 cows) .

You'd just add up the cows, and simplify the expression to say

5 cows .

When you see an expression that talks about 'x's instead of cows,
you get scared. It has something to do with algebra and math and
all that stuff, so you freeze.

Relax. Just make each 'x' a cow, and suddenly it almost solves itself.

4 0

3 years ago

Read 2 more answers

After establishing x how would I find DKH

Nookie1986 [14]

The sum of the 2 angles will add up to 180°

8 0

3 years ago

3x+4=20 solve using the box method

Sonbull [250]

Answer:

Exact form: