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miskamm [114]
3 years ago
14

5/7x-4=21 solve folve for x

Mathematics
2 answers:
Aleksandr-060686 [28]3 years ago
6 0

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

7*x-4-(21)=0

Solve  :    7x-25 = 0

Add 25 to both sides of the equation :

                     7x = 25

Divide both sides of the equation by 7:

                    x = 25/7 = 3.571

Marysya12 [62]3 years ago
5 0

Answer:

35

Step-by-step explanation:

1. 5/7x - 4 = 21

2.  Add 4 on both sides --> 5/7x = 25

3. Divide by 5/7 on each side

4. on the left it cancels out and you are left with ---> x = 35

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I need help finding if it’s either SOH, CAH or TOA and the indicated side of the triangle, thank you!
Brilliant_brown [7]

Answer:

\huge\boxed{IJ \approx 2.01}

Step-by-step explanation:

In order to find the side mentioned (IJ), we need to use SOH CAH TOA.

SOH CAH TOA is an acronym to help us remember what sin, cos, and tan mean. It stands for:

Sin = Opposite / Hypotenuse

Cosine = Adjacent / Hypotenuse

Tan = Opposite / Adjacent

Since we know the measure of angle K (42) and we know one of the sides, we can use this to find the missing length.

Since the side given to us is the hypotenuse, and we're looking for the side opposite of the angle (IJ), the only possible one to use would be SIN as it includes Opposite and Hypotenuse.

Our equation is now this: \text{sin(42)} = \frac{x}{3}

Let's now solve for x.

  • \text{sin(42)} = \frac{x}{3}
  • 3 \cdot \text{sin(42)} = x
  • \text{sin(42)} \approx 0.67
  • 3 \cdot 0.67 \approx 2.01

Therefore, the length of IJ will be around 2.01.

Hope this helped!

4 0
2 years ago
I don’t understand this either
trasher [3.6K]
It is a part of slope form ( intercept
7 0
3 years ago
Read 2 more answers
Identify the angle between 0 and 360 degrees that is coterminal with the
Andrei [34K]

Answer:

option 2

Step-by-step explanation:

By repeatedly subtracting 360° from the given angle.

1155° - 360° = 795°

795° - 360° = 435°

435° - 360° = 75° ← coterminal angle

4 0
2 years ago
Estimate 19 precent of 41
Burka [1]

19% turns into 20%

20%*41=8.2

Have a nice day.

4 0
2 years ago
Question 1<br> Solve: 25.6 - 5y + 15. 3
QveST [7]

Answer:

40.9 - 5y

Step-by-step explanation:

25.6 - 5y + 15.3

40.9 - 5y ## ^ combine like-terms

8 0
3 years ago
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