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nirvana33 [79]
4 years ago
9

PLEASE ANSWERRRRRRRRRR

Mathematics
1 answer:
mash [69]4 years ago
8 0

Answer: OPTION B.

Step-by-step explanation:

Given the following System of equations:

\left \{ {{3x-5y=19} \atop {x+y=1}} \right.

You can use the Elimination Method to solve it. The steps are:

1. You can mutliply the second equation by -3.

2. Then you must add the equations.

3. Solve for the variable "y".

Then:

\left \{ {{3x-5y=19} \atop {-3x-3y=-3}} \right.\\.....................\\-8y=16\\\\y=\frac{16}{-8}\\\\y=-2

4. Now that you know the value of the variable "y", you must substitute it into any original equation.

5. The final step is to solve for "x" in order to find its value.

Then:

x+(-2)=1\\\\x=1+2\\\\x=3

Therefore, the solution is:

(3,-2)

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Truck tire life is normally distributed with a mean of 60,000 miles and a standard deviation of 4,000 miles. what is the probabi
olasank [31]
To solve for the P(54,000≤x≤66000) we proceed as follows:
z-score=(x-μ)/σ
μ-60000
σ-4000
thus:
when x=66,000
z-score=(66000-60000)/4000=1.5
P(z≤1.5)=0.9332
when x=54000
z=(54000-60000)/4000
z=-1.5
P(z≤-1.5)=0.0668
thus
 P(54,000≤x≤66000) 
=P(z≤1.5)-P(z≤-1.5)
=0.9332-0.0668
=0.8664

Answer: 0.8664
8 0
3 years ago
Solve 7 2 3 − ( 1 2 4 + 3 6 8 ) . Choose the number to complete the mixed number. Numbers may be used once or not at all. ASAP p
weqwewe [10]

Answer:

2\frac{5}{12} <em>is your answer.</em>

Step-by-step explanation:

7\frac{2}{3} -(1\frac{2}{4} +3\frac{6}{8} )\\\\\frac{23}{3} -(\frac{6}{4} +\frac{15}{4}) \\\\\frac{23}{3} -(\frac{21}{4})\\\\\frac{92-63}{12} \\\\\frac{29}{12} \\\\2\frac{5}{12}

6 0
2 years ago
If Charlotte spent 25% more on furniture than she will on flooring, how much did she spend on furniture?
SashulF [63]

Answer:

Charlotte spent   x + 0.25x on furniture

Step-by-step explanation:

Given:

Charlotte spent 25% more on furniture than she will on flooring

To Find:

Amount spent on furniture = ?

Solution:

Let the amount spent on flooring be x

and the amount spent on furniture be y

25% more on furniture than she spent on flooring can be written as

=>25% of x

So the cost spent on furniture will be

=>y= cost spent on flooring +  25% of cost spent on flooring

=>y= x + 25% of x

=>y=x + \frac{25}{100} \times x

=> y=x + 0.25x

3 0
4 years ago
8.) Write y = 3/5 x + 4 in standard form using integers.
Tju [1.3M]

Answer:

I believe the answer is c

Step-by-step explanation:

What i got tho was... 3x-5y=-20

7 0
3 years ago
Hi guys can you answer this question​
lesya [120]

Answer:

160403.47

Step-by-step explanation:

Please mark as brainliest

7.32*600=4392

4392*0.56= 2459.52

2459.52*3= 7378.56

7378.56/3.45=2138.71

2138.71*75= 160403.47

3 0
3 years ago
Read 2 more answers
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