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3 years ago

40 increased by twice a number .

Mathematics

1 answer:

igor_vitrenko [27]3 years ago

8 0

Answer:

40+nx2

Step-by-step explanation:

n=a number

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Yvonne is a salesperson who earns a fixed amount of $1,850 per month. She also earns a commission of 4% on the amount of goods t

stellarik [79]

Let the amount of dollars in goods sold be x, then her earning is 1850 + (4/100)x = 1850 + 0.04x.
For her to earn more than $2300, we have:
1850 + 0.04x > 2300
0.04x > 2300 - 1850
0.04x > 450
x > 450 / 0.04
x > $11,250

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3 years ago

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The triangles are similar. What is the value of x.

Zarrin [17]

Answer:

The answer to your question is x = 6

Step-by-step explanation:

To solve this problem use proportions. Just look for the right sides so the proportion be correct.

Sides of the small triangle = Sides of the big triangle

$\frac{x}{4} = \frac{12}{8}$

Solve for x

$x = \frac{4(12)}{8}$

Simplification

x = $\frac{48}{8}$

Result

x = 6

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3 years ago

What is the determinant of the coefficient matrix of the system? –158 –117 65 117

tatuchka [14]

Answer:

Step-by-step explanation:

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3 years ago

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A commercial jet can fly 868 miles in 2 hours with a tailwind but only 792 miles in 2 hours into a headwind. Find the speed of t

erik [133]

Answer:

The speed of the jet in still air is 415 mph and the speed of the wind is 19 mph

Step-by-step explanation:

we know that

The speed is equal to divide the distance by the time

Let

x -----> the speed of the wind in miles per hour

y ----> the speed of the jet in still air in miles per hour

we know that

With a tailwind

$y+x=\frac{868}{2}$

$y+x=434$ ----> equation A

With a headwind

$y-x=\frac{792}{2}$

$y-x=396$ ----> equation B

solve the system of equations A and B by elimination

Adds equation A and equation B

$y+x=434\\y-x=396\\------\\y+y=434+396\\2y=830\\y=415$

Find the value of x

$y+x=434$

$415+x=434$

$x=434-415$

$x=19$

therefore

The speed of the jet in still air is 415 mph and the speed of the wind is 19 mph

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3 years ago

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Where is (6,0)(6,0)left parenthesis, 6, comma, 0, right parenthesis located on the coordinate plane?

Jlenok [28]

Answer:

brainliest answer if this helps

Step-by-step explanation:

6 is x axis and 0 would be y axis

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