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garri49 [273]
3 years ago
8

Please help me with please solving for x and y

Mathematics
2 answers:
beks73 [17]3 years ago
4 0

Answer:

first put in equation

Step-by-step explanation:

put the whole thing in a equation

Sladkaya [172]3 years ago
3 0
  • x = 13.5
  • y = 3.5

Step-by-step explanation:

  • Solving for x

7x + 30 = 11x - 24

30 + 24 = 11 - 7x

54 = 4x

54/4 = x

27/2 = x

<u>13.5 = </u><u>x</u>

  • Solving for y

5y + 38 = 17y - 4

38 + 4 = 17y - 5y

42 = 12y

42/12 = y

21/6 = y

7/2 = y

<u>3.5 = y</u>

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sveta [45]
For example:
(4/9) x=8

Now can solve this equation multiplying each side by 9/4.

(9/4)(4/9)x=(9/4)8
x=18

To  check:
(4/9)(18)=(4*18)/9=72/9=8

4 0
3 years ago
The diameter of the circle shown below is 12m. What is the area of the circle?
olya-2409 [2.1K]

Answer:

Step-by-step explanation:

A = 1/4 pie d2

= 1/4(22/7)(12)2

= 1/4(22/7)144

= 113.1

7 0
2 years ago
Read 2 more answers
Did I do this correctly?​
lorasvet [3.4K]

Answer:

No, The answer should be 240

Step-by-step explanation:

  1. The first step to finding the Surface Area was done well and was right but you got confused when trying to add the area of each shape
  2. There is 3 Rectangles and 2 Traingles.
  3. Let's start with the area of the triangles. 1/2bh is the formula for finding area of Traingles. 1/2(4)(6) = 12. We have two Traingles so that would be 24.
  4. Now we have three rectangles with different lengths we need to calculate.
  5. Rectangle 1 = 12 * 8 = 96
  6. Rectangle 2 = 12 * 6 = 72
  7. Rectangle 3 = 12* 4 = 48
  8. 24+96+72+48 = 240.
  9. So, the surface area of the rectangular prisim is 240

6 0
2 years ago
How do I find the value of x for which line a is parallel to line b?
notka56 [123]

Answer:

x = 20

Step-by-step explanation:

3x + 6x = 180, if you make them supplementary then they will be parallel

9x = 180

x = 20

7 0
3 years ago
Find the tangent of the angle in between the lines 2x+3y–5=0 and 5x=7y+3?
tino4ka555 [31]

Answer:

-29/31

Step-by-step explanation:

We are given;

The equations;

2x+3y–5=0 and 5x=7y+3

We are required to determine the tangent of the angle between the two lines;

We need to know that;

When an equation is written in the form of, y = mx + c

Then, tan θ = m , where θ is the angle between the line and the x-axis.

Therefore, we can find the tangent of the angle between each line given and the x-axis.

2x+3y–5=0

we first write it in the form, y = mx + c

We get, y = -2/3x + 5/3

Thus, tan θ₁ = -2/3

5x=7y+3

In the form of y = mx + c

We get; y = 5/7x - 3/7

Thus, tan θ₂ = 5/7

Using the formula, θ = tan^-1((m1-m2)/(1+m1m2)) , where θ is angle between the two lines.

Thus, the tangent of the angle between the two lines will be;

tan θ = ((m1-m2)/(1+m1m2))

        = ((-2/3-5/7)/(1 + (-2/3 × 5/7)))

        = -29/21 ÷ 31/21

        = -29/31

Thus, the tangent of the angle between the two lines is -29/31

7 0
3 years ago
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