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3 years ago

If four times the sum of a number and 5 is divided by 3 , the result is 16

Mathematics

2 answers:

Black_prince [1.1K]3 years ago

6 0

If four times the sum of a number and 5 is divided by 3, the result is 16. Step 1. Let x be the number.

Step 2. Four times the number and 5 is divided by 3

Step 3. The result is 16

Step 4. Multiply by 3 to both sides of equation to get rid of denominator

Step 5. Subtract 20 from both sides of equation

Step 6. Divide by 4 to both sides of equation

Step 7 ANSWER is x=7.

I hope the above steps were helpful.

Dmitrij [34]3 years ago

5 0

Answer: false

Step-by-step explanation:

You need to divide 5 and 3 and you would get 1.6 repeating and then you drop the 4x and you should have gotten 4x plus 1.6 because 1.6 doesn’t have a variable. I hope this made sense.

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3 years ago

Seiji and Gavin both worked hard over the summer. Together they earned a total of $450. Gavin earned $30 more than seiji.

jok3333 [9.3K]

Answer:

(a) $s+g=450\\g=s+30$

(b) The graph is shown below.

(c) Seiji earned $ 210 and Gavin earned $ 240.

Step-by-step explanation:

Given:

Sum of earnings of Seiji and Gavin = $ 450

Gavin earns $ 30 more that that of Seiji.

(a)

So, as per question, if s and g are the amounts earned by Seiji and Gavin respectively, then;

$s+g=450\\g=s+30$

(b)

The graph is plotted using the x and y intercepts of each line.

For the line, $s+g=450$ , the x intercept is at $g=0$ . So, x intercept is (450,0). Similarly, the y intercept is when s=0, which is (0,450). Draw a line passing through these two points. The red line represents $s+g=450$ .

We follow the same process to plot the next line. The x intercept is at (-30,0) and y intercept is at (0,30). Draw a line passing through these two points. The blue line represents $g=s+30$ .

The graph is shown below.

(c)

From the graph, the point of intersection of the two lines gives the earnings of each of the persons.

The $x$ value of the point of intersection is the earning of Seiji which is $ 210 and the $y$ value is the earning of Gavin which is $ 240 as shown in the graph.