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3 years ago

Find the sum. –7 + (–2)

Mathematics

1 answer:

Vika [28.1K]3 years ago

8 0

Answer: -9

Step-by-step explanation: when you add unwhole numbers they move father into the negatives if its easier you can take away the - mark and add 7 + 2 which is nine then you put the sign back good luck love!

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Can someone please help me with this? thank you

Aleks [24]

Answer:

22.5

Step-by-step explanation:

Volume is l×w×h

2 × 2.5 × 4.5 = 22.5

3 0

3 years ago

A machine has four components, A, B, C, and D, set up in such a manner that all four parts must work for the machine to work pro

olchik [2.2K]

Answer:

0.756

Step-by-step explanation:

It is given that a machine has four components, A, B, C, and D.

$P(A)=P(B)=0.93, P(C)=0.95,P(D)=0.92$

If these components set up in such a manner that all four parts must work for the machine to work properly.

We need to find the probability that the machine works properly. It means we have to find the value of $P(A\cap B\cap C\cap D)$ .

If two events X and Y are independent, then

$P(X\cap Y)=P(X)\times P(Y)$

Assume the probability of one part working does not depend on the functionality of any of the other parts.

$P(A\cap B\cap C\cap D)=P(A)\times P(B)\times P(C)\times P(D)$

Substitute the given values.

$P(A\cap B\cap C\cap D)=0.93\times 0.93\times 0.95\times 0.92$

$P(A\cap B\cap C\cap D)=0.7559226$

$P(A\cap B\cap C\cap D)\approx 0.756$

Therefore, the probability that the machine works properly is 0.756.

7 0

3 years ago

A rectangle garden is 6 feet long and 4 feet wide a second rectangular garden has dimensions that are doubled the dimensions of

OLga [1]

I do not know this one but the first garden is 24 and the second one is 576.

8 0

3 years ago

Solve the equation and check your solution. (If an answer does not exist, enter DNE. If all real numbers are solutions, enter RE

r-ruslan [8.4K]

5x-4=4x+8
-4x. -4x
X-4=8
+4. +4
X=12
5(12)-4=4(12)+8
60-4=48+8
56=56

5 0

3 years ago

A baseball team has three different pitchers. Randy pitched 3 innings and allowed 2 runs, Felix pitched 5 innings and allowed 4

seropon [69]

Randy averages .66 Runs per inning
Felix averages .8 Runs per inning
Johan averages .71 runs per inning

Therefore, Randy has the lowest number of runs allowed per inning.

3 0

3 years ago