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Juli2301 [7.4K]
3 years ago
14

Evaluate the following expressions using the order of operations

Mathematics
1 answer:
Ahat [919]3 years ago
7 0
7*8-4(6-2)+18
56-4(4)+18
56-16+18
40+18
58

6^2-(8*3)+2^2(7*3)
36-24+4(21)
12+84
96
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What is the solution of this system of linear equations? 3y=3/2x+6 1/2y-1/4x=3.
tensa zangetsu [6.8K]

Answer:

No solution

Step-by-step explanation:

Please, separate equations with a comma, or the word "and," or a semicolon.

Next, determine the LCD and multiply both equations by it, so as to elimiinate the fractional coefficients.

3y=3/2x+6 1/2y-1/4x=3

should be written as the system

   3y=(3/2)x+6         Use parentheses around the fraction for clarity

(1/2)y-(1/4)x=3            Same:  use parentheses

The LCDs here are 2 (for the first equation) and 4 (for the second equation).  Multiply the first equation by 2 to eliminate the fractions:

   3y=(3/2)x+6         →   6y = 3x + 12, and

4[ (1/2)y-(1/4)x=3 ]     →   2y  -  x   = 12

Let's use the substitution method to solve this system.  Solve the 2nd equation for x, obtaining x = 2y - 12.  Substitute 2y - 12 for x in the 1st equation 6y = 3x + 12:

6y = 3(2y - 12) + 12, or

6y = 6y - 36 + 12

This reduces to 0 = -24, which is never true.  Thus,

this system has NO solution.

 

5 0
3 years ago
Horatio sold 58 of a carton of bottled water. A carton contains 32 bottles of water. How many bottles did Horatio sell?
Sergeeva-Olga [200]

Answer:

1856

Step-by-step explanation:

Each carton contains 32bottles

58 cartons were sold

Meaning 58 cartons contains;

58x32=1856 bottles

7 0
3 years ago
Read 2 more answers
A certain plant runs three shifts per day. Of all the items produced by the plant, 50% of them are produced on the first shift,
Snezhnost [94]

Answer:

0.2941 = 29.41% probability that it was manufactured during the first shift.

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

P(B|A) = \frac{P(A \cap B)}{P(A)}

In which

P(B|A) is the probability of event B happening, given that A happened.

P(A \cap B) is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Defective

Event B: Manufactured during the first shift.

Probability of a defective item:

1% of 50%(first shift)

2% of 30%(second shift)

3% of 20%(third shift).

So

P(A) = 0.01*0.5 + 0.02*0.3 + 0.03*0.2 = 0.017

Probability of a defective item being produced on the first shift:

1% of 50%. So

P(A \cap B) = 0.01*0.5 = 0.005

What is the probability that it was manufactured during the first shift?

P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.005}{0.017} = 0.2941

0.2941 = 29.41% probability that it was manufactured during the first shift.

6 0
3 years ago
17/21 ÷ 3 4/7 what us the estimated answer and steps to divide and find the answer
r-ruslan [8.4K]
Convert 3 4/7 into an improper fraction: 25/7
17/21 divided by 25/7

Dividing by a fraction is the same as multiplying by it's reciprocal.
17/21*7/25

Simplify:
17/3*1/25

Multiply across:
17/75
7 0
3 years ago
Michelle's salad uses 1ż tomatoes and
Bess [88]

Answer:

if Michelle's salad use 1tomato and servers 3 people which mean if she use 2 tomatoes she will server 6 people

Step-by-step explanation:

and caley's salad uses 2 tomatoes and servers 5 people

michelle's tomatoes serves more

4 0
2 years ago
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