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White raven [17]
3 years ago
7

Which expression is equivalent to −40+(−20)+(−60) ?

Mathematics
2 answers:
NARA [144]3 years ago
8 0
I think the answer is the first one
timurjin [86]3 years ago
6 0

-20+(-40)+(-60) The first anwser

I hope this helps :D

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Toby's piggy bank contains only 5c and 10c coins. If it contains 65 coins with a total value of 3.80, find the number of each ty
mr_godi [17]
The positive is 2 hknshue dska
5 0
3 years ago
Write negations for each of the following statements. (Assume that all variables represent fixed quantities or entities, as appr
amm1812

Answer:

a. P is a square and P is not a rectangle

b. Today is New Year’s Eve and tomorrow is not January.

c. The decimal expansion of r is terminating and r is not rational.

d. n is prime and either n is not odd or n is not 2.

e. x is nonnegative and either x is not positive or x is not 0.

f. Tom is Ann’s father and either Jim is not her uncle or Sue is not her aunt.

g. n is divisible by 6 and either n is not divisible by 2 or n is not divisible by 3.

Step-by-step explanation:

The general formula for negations that will be applied is:

Statement: If x is y, then x is z

Negation: x is y and x is not z

Statement: If x is y, then x is z and w

Negation: x is y and either x is not z or x is not w

Applying those principles:

a. P is a square and P is not a rectangle

b. Today is New Year’s Eve and tomorrow is not January.

c. The decimal expansion of r is terminating and r is not rational.

d. n is prime and either n is not odd or n is not 2.

e. x is nonnegative and either x is not positive or x is not 0.

f. Tom is Ann’s father and either Jim is not her uncle or Sue is not her aunt.

g. n is divisible by 6 and either n is not divisible by 2 or n is not divisible by 3.

4 0
2 years ago
Evaluate the expression below.<br> 13-[4•(8-5)+2-9]•2
In-s [12.5K]

Answer:

Step-by-step explanation:

13 - [4 *(8 - 5) + 2 - 9] * 2 =

13 - [ 4 (3) + 2 - 9] * 2 =

13 - [ 12 + 2 - 9] * 2 =

13 - 5 * 2 =

13 - 10 =

3

8 0
3 years ago
May someone help me SKSKSKSKSK
Arte-miy333 [17]

Answer:

P= A + B + C

Step-by-step explanation:

P= Side + base + Side

P= 10 + 6 + 8

P = 24

3 0
3 years ago
Evan runs a website that has gotten quite popular. However, its popularity seems to be decreasing and the site is now getting 7%
anyanavicka [17]

Answer:

(a-b) *(a-b) *(a-b)

=(a*a*a) -3*(a*a*b)+3*(a*b*b)-(b*b*b)

34000*(1-7%)*(1-7%)*(1-7%)

=34000*(1-0.07)*(1-0.07)*(1-0.07)

=34000*[(1*1*1)-3*(1*1*0.07)+3*(1*0.07*0.07)-(0.07*0.07*0.07)]

=34000*(1-0.21+0.0147-0.000343)

=34000*(0.804357)

=34*1000*(804.357/1000)

=34*804.357

=<u>27348.138</u>

<u>=</u><u>27348</u>

4 0
3 years ago
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