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sertanlavr [38]
2 years ago
14

Answer pls thanks kfdsdatttdfyui8u90g

Mathematics
1 answer:
diamong [38]2 years ago
6 0

Answer:

Step-by-step explanation:

960 75%

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Find all the solutions to the equation 7sin^2x -14sinx+2=-5
Allisa [31]
I will get you started.

Let sin x = u

Then 7sin^2x -14sinx+2=-5 become

7u^2 - 14u = - 5

7u^2 - 14u + 5 = 0

Steps:

1. Solve for u.

2. Back- substitute for u.

3. Take the arcsin on both sides to find the angle(s).

You finish.
7 0
3 years ago
A road race is 13 1/2 miles long. There are water stations every 3/4 if a mile including at the finish line. How
Margarita [4]

The number of water stations there are along the 13 1/2 miles long road race according to the task content is; Choice C; 18 water stations.

<h3>What is the number of water stations along the road race?</h3>

It follows from the task content that the number of water stations can be determined as follows;

13 1/2 ÷ 3/4

= 27/2 × 4/3

= 18 water stations.

Read more on fraction division;

brainly.com/question/407943

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7 0
2 years ago
How hard must someone pull on the unkown line and inwhat direction to keep the knot from moving ​
dolphi86 [110]

Answer:

4.4N, 263.4°

Step-by-step explanation:

The sum of all forces must add to zero:

The forces in the x-plane:

∑F = 3N + (cos 120°)*5N + x = 0

x = -(3N + (cos 120°)*5N)

x = -0.5N

The forces in the y-plane:

∑F = (sin 120°)*5N + y = 0

y = -(sin 120°)*5N = -√(3/4)*5N = -4.3N

The magnitude of the unknown force U is:

U = √(x² + y²) = √19 = 4.4N

The direction is given by:

tanФ = y/x

Ф = 263.4°

4 0
3 years ago
Which of the following best describes a basic postulate of the Euclidean geometry
zaharov [31]

The following best describes a basic postulate of the Euclidean geometry

Option first - All lines continue indefinitely.                                                                          

One of the postulates of the Euclidean geometry states that any straight line segment can be extended indefinitely in a straight line. So according to this postulate, the first one is correct.    

4 0
3 years ago
Rita is saving money to buy a game. So far she has saved ,30$ which is three-fifths of the total cost of the game. How much does
Jobisdone [24]

Answer:

The total cost of the game is $50

Step-by-step explanation:

I'm so sorry, for some reason I can't figure out how to explain this. This is my best attempt (again sorry)

1/5th = $10

2/5th = $20

3/5th = $30

4/5th = $40

5/5th = $50

6 0
3 years ago
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