1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
o-na [289]
3 years ago
6

Steps in solving this equation plz​

Mathematics
1 answer:
Leni [432]3 years ago
5 0

Answer:

Equation:

Step-by-step explanation:

3y = x + 15

y + 3x = 4

To get the y-value Subtract 3x from both sides.

y = -3x + 4

Then substitute;

3(-3x + 4) = x + 15

Distribute: -9x + 12 = x + 15

Subtract x from both sides

-10x + 12 = 15

Subtract 12 from both sides

-10x = 3

Divide both sides by -10

x = 3/-10

Then to get the value of y;

y = -3(3/-10) + 4

You might be interested in
Write the equation in slope-intercept form y−6=−2/5(x−10)
stellarik [79]

Answer: y = -2/5x + 10

Step-by-step explanation:

y − 6 = − 2/5 (x − 10)

do distributive property

y - 6 = -2/5x + 4

add six to both sides

y = -2/5x + 10

boom the answer :v

5 0
2 years ago
*I thought of a number, added 18, then multiplied the result by 8. I got 16. What was my number?
Arte-miy333 [17]

Answer:

-16

Step-by-step explanation:

Represent the number by n.

Then:

8(n + 18) = 16

Performing the indicated multiplication, we get:

8n + 144 = 16

Subtracting 144 from both sides results in 8n = -128.

Dividing both sides by 8:  n = -128/8  =  -16

The number was -16.

4 0
3 years ago
Разстоянието между селищата A и B е 410 км.От A за B пътува лека кола със скорост 90km/h, а 1 h по-късно от B за A тръгва камион
harkovskaia [24]

4,56 км / ч просто разделят ускорението и точката на среща.

4 0
3 years ago
Which of the following trigonometric ratios are correct?
den301095 [7]

Hi there! In this problem, you should have the knowledge of three basic Trigonometric Ratio.

  • sinA = opposite/hypotenuse
  • cosA = adjacent/hypotenuse
  • tanA = opposite/adjacent

Now that we know three basic ratio. Let's check each choices!

  • sin50° = d/c

This choice is wrong because we focus on the 50° angle. When we focus on 50°, sin50° should be d/x and not d/c.

  • sin50° = c/x

This choice is also wrong because in ratio, it's cos50° that adjacent/hypotenuse.

  • tan50° = d/c

This choice is correct! As ratio states, tanA = opposite/adjacent.

  • tan50° = x/c

This choice is wrong. x/c is a reciprocal of cosine which is 1/cos. We call the reciprocal of cosine as secant or sec in short.

  • cos50° = x/d

This choice is wrong as x/d is a reciprocal of sine which is 1/sin. We call the reciprocal of sine as cosecant or cosec/csc in short.

  • cos50° = c/x

This choice is right by the ratio. Nothing really much to explain since we follow by ratio that is defined.

Answer

  • tan50° = d/c
  • cos50° = c/x

Questions can be asked through comment.

Furthermore, tan also has its reciprocal form itself which is called cotangent also known as cot in short.

Hope this helps, and Happy Learning! :)

8 0
3 years ago
What is the measure of <DCF
Shtirlitz [24]
129 degrees you just add DCE and ECF together
5 0
3 years ago
Read 2 more answers
Other questions:
  • Carlita saw 5 times as many robins as cardinals while bird watching. She saw a total of 25 birds. How many more robins did she t
    10·2 answers
  • What is BC? <br> enter your answer in the box<br> units
    5·2 answers
  • What is the measure of ∠W, rounded to the nearest degree?
    10·2 answers
  • 1. If the product of the integers a,b, and c is 1, then what is the difference between the largest and the smallest possible val
    10·1 answer
  • Mr. Smith gave a cashier a $50 bills for a purchase of $38.70. The cashier gave him a $10 dollar bill, two $1 bills and three di
    6·1 answer
  • Please help with this math question
    7·2 answers
  • *I need this done badly* George has a box of marbles. Each marble weighs the same amount. When George places 37 marbles on a sca
    5·2 answers
  • Rectangular cards 2 inches by 3 Inches are cut from a rectangular sheet 2 ft by 3 ft what is the greatest number of cards that c
    5·1 answer
  • Find the area of the rectangle.
    8·2 answers
  • Verify commutative property of multiplication and addition 5 4
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!