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dangina [55]
3 years ago
6

Divide. −3/8÷−6/7 . plsssss help

Mathematics
2 answers:
Keith_Richards [23]3 years ago
5 0

Answer:

7/16

Step-by-step explanation:

ahrayia [7]3 years ago
3 0

<u>Answer:</u>

The solution of −3/8÷−6/7 is \frac{7}{16}

<u>Solution:</u>

The given equation is -\frac{3}{8} \div-\frac{6}{7}

In the above equation we can see that more than one mathematical operator has been used.

To figure out which one to solve first we need to follow the BODMAS rule.

BODMAS mean brackets, of, division, multiplication, addition and subtraction.

To make the calculation simply we will invert one of the fractions. This will make the division operator into a multiplication one.

-\frac{3}{8} \times-\frac{7}{6}

This equation can be simplified as 6 is divisible by 3. Also the negative signs cancel out each other.

\frac{1}{8} \times \frac{7}{2}

On multiplying the remaining terms we get;

\frac{7}{16}

Hence the solution of −3/8÷−6/7 is \frac{7}{16}

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As a salesperson, Jonathan is paid $50 per week plus 3% of the total amount he sells. This week, he wants to earn at least $100.
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Step-by-step explanation:

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2 years ago
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2 Here are two equations:
MatroZZZ [7]

a. (3,4) is only the solution to Equation 1.

(4, 2.5) is the solution to both equations

(5,5) is the solution to Equation 2

(3,2) is not the solution to any equation.

b. No, it is not possible to have more than one (x,y) pair that is solution to both equations

Step-by-step explanation:

a. Decide whether each neither of the equations,

i (3,4)

ii. (4,2.5)

ill. (5,5)

iv. (3,2)

To decide whether each point is solution to equations or not we will put the point in the equations

Equations are:

Equation 1: 6x + 4y = 34

Equation 2: 5x – 2y = 15

<u>i (3,4) </u>

Putting in Equation 1:

6(3) + 4(4) = 34\\18+16=34\\34=34\\

Putting in Equation 2:

5(3) - 2(4) = 15\\15-8 = 15\\7\neq 15

<u>ii. (4,2.5)</u>

Putting in Equation 1:

6(4) + 4(2.5) = 34\\24+10=34\\34=34\\

Putting in Equation 2:

5(4) - 2(2.5) = 15\\20-5 = 15\\15=15

<u>ill. (5,5)</u>

6(5) + 4(5) = 34\\30+20=34\\50\neq 34

Putting in Equation 2:

5(5) - 2(5) = 15\\25-10 = 15\\15=15

<u>iv. (3,2)</u>

6(3) + 4(2) = 34\\18+8=34\\26\neq 34

Putting in Equation 2:

5(3) - 2(2) = 15\\15-4 = 15\\11\neq 15

Hence,

(3,4) is only the solution to Equation 1.

(4, 2.5) is the solution to both equations

(5,5) is the solution to Equation 2

(3,2) is not the solution to any equation.

b. Is it possible to have more than one (x, y) pair that is a solution to both

equations?

The simultaneous linear equations' solution is the point on which the lines intersect. Two lines can intersect only on one point. So a linear system cannot have more than one point as a solution

So,

a. (3,4) is only the solution to Equation 1.

(4, 2.5) is the solution to both equations

(5,5) is the solution to Equation 2

(3,2) is not the solution to any equation.

b. No, it is not possible to have more than one (x,y) pair that is solution to both equations

Keywords: Linear equations, Ordered pairs

Learn more about linear equations at:

  • brainly.com/question/10534381
  • brainly.com/question/10538663

#LearnwithBrainly

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Find the least common denominator for these two rational expressions. 3/2n -2/5n
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20. What do you think would happen to the variability (standard deviation) of the distribution of sample proportions if the samp
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Answer:

Step-by-step explanation:

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By central limit theorem and also approximation of binomial to normal , we have sample proportion for large number of samples will be normal

with mean = sample proportion

and std deviation = \sqrt{\frac{pq}{n} }

Thus we find standard deviation of proportion sample is inversely proportional to the square of the sample size n.

It follows automatically that as sample size increases std deviation decreases.

Here from 80 sample size was made to 200

So std deviation would decrease automatically

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2 years ago
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