All categories

3 years ago

What is negative eight plus four

Mathematics

2 answers:

goldenfox [79]3 years ago

6 0

Answer:

-4

Step-by-step explanation:

- - - - - - - -

+ + + +

4 negatives cancel out and leave you with -4

sertanlavr [38]3 years ago

6 0

The answers is -8 + 4 = -4

You might be interested in

A box contains four blue and eight red balls. Jim and Jack start drawing balls from the box, respectively, one at a time, at ran

aleksandrvk [35]

Answer:

the probability that Jack draws the blue ball is 0.38539

Step-by-step explanation:

Given the data in the question;

box contains

blue balls = 5

red balls = 8

Jim and Jack start drawing balls from the box, respectively, one at a time, at random, and without replacement

Now,

on the first attempted;

⇒ ( 8/13) × ( 5/12) = 10/39

on the second attempt;

⇒ ( 8/13 ) ( 7/12) ( 6/11 ) ( 5/10 ) = 14/143

on the third attempt;

⇒ ( 8/13 ) ( 7/12) ( 6/11 ) ( 5/10 ) ( 4/9 ) ( 5/8 ) = 35/1287

on the fourth attempt;

⇒ ( 8/13 ) ( 7/12) ( 6/11 ) ( 5/10 ) ( 4/9 ) ( 3/8 ) ( 2/7 ) ( 5/6 ) = 5/1287

so we add everything;

⇒ 10/39 + 14/143 + 35/1287 + 5/1287

= 0.38539

Therefore, the probability that Jack draws the blue ball is 0.38539

5 0

3 years ago

What is the answer??

nordsb [41]

Answer:

uhhh maybe c, i thinkkk

Step-by-step explanation:

4 0

3 years ago

F(x)=-3|x-4| Vertical shrink by a factor of 1/2

sweet [91]

to vertically shrink a function by a factor of c, multiply the whole function by c

f(x) vertically shrunk by a factor of c would be cf(x)

so f(x)=-3|x-4| vertically shrunk by a factor of 1/2 would be $f(x)=(\frac{-3}{2})|x-4|$

6 0

3 years ago

A ping pong ball is drawn at random from an urn consisting of balls numbered 2 through 10. A player wins 1 dollar if the number

choli [55]

Answer:

The expected value is defined as:

EV = ∑xₙ*pₙ

Where xₙ represents the n-th event, and pₙ is the probability of that event.

Now, the events are:

The possible outcomes are: {2, 3, 4, 5, 6, 7, 8, 9, 10} 9 in total.

Winning $1, when the number is odd. The outcomes in this case are: {3. 5. 7. 9}

4 out of 9, then the probability is p = 4/9.

Lossing $1 when the number is even. The outcomes in this case are {2, 4, 6, 8, 10}

5 out of 9, the probability is p = 5/9.

Then the expected value is:

EV = (4/9)*$1 - (5/9)*$1 = (-1/9)*$1 = -$0.11...

4 0

4 years ago

20 POINTS!!

BARSIC [14]

Answer:

r = 8

Step-by-step explanation:

Given that M is directly proportional to r² then the equation relating them is

M = kr² ← k is the constant of proportionality

To find k use the condition when r = 2 , M = 14

k = $\frac{m}{r^{2} }$ = $\frac{14}{4}$ = $\frac{7}{2}$

M = r² ← equation of proportion

When M = 224, then

224 = $\frac{7}{2}$ r² ← multiply both sides by 2

7r² = 448 ( divide both sides by 7 )

r² = 64 ( take the square root of both sides )

r = $\sqrt{64}$ = 8

have wonderful day

7 0

3 years ago

What is negative eight plus four​

What is negative eight plus four