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IRINA_888 [86]
3 years ago
14

Richie's average on his math tests was 64%. On the next test he had a mark of 76%, and this raised

Mathematics
1 answer:
joja [24]3 years ago
5 0

Answer:

68

Step-by-step explanation:

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Lucia made a scale drawing of a game room. The pool table is 3 inches long in the drawing. The actual pool table is 9 feet long.
Murrr4er [49]
3 feet is equal to 1 inch if she measured 3 inches to equal 9 feet
3 0
3 years ago
X²+7x+10=0 a=1, b=7, c=10 b²-4ac=(7)²-4(1) (10) =49-4(10) =49-40 =9​
Sloan [31]

Answer:

X=5

X=2

Step-by-step explanation:

8 0
3 years ago
The distance between 5,-8 and 5,7 hurry please
solmaris [256]

Answer:

it should be 15

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
A system for tracking ships indicated that a ship lies on a hyperbolic path described by 5x2 - y2 = 20. the process is repeated
zysi [14]
Answer:
The ship is located at (3,5)

Explanation:
In the first test, the equation of the position was:
5x² - y² = 20 ...........> equation I
In the second test, the equation of the position was:
y² - 2x² = 7 ..............> equation II
This equation can be rewritten as:
y² = 2x² + 7 ............> equation III

Since the ship did not move in the duration between the two tests, therefore, the position of the ship is the same in the two tests which means that:
equation I = equation II

To get the position of the ship, we will simply need to solve equation I and equation II simultaneously and get their solution.

Substitute with equation III in equation I to solve for x as follows:
5x²-y² = 20
5x² - (2x²+7) = 20
5x² - 2y² - 7 = 20
3x² = 27
x² = 9
x = <span>± </span>√9

We are given that the ship lies in the first quadrant. This means that both its x and y coordinates are positive. This means that:
x = √9 = 3

Substitute with x in equation III to get y as follows:
y² = 2x² + 7
y² = 2(3)² + 7
y = 18 + 7
y = 25
y = +√25
y = 5

Based on the above, the position of the ship is (3,5).

Hope this helps :)
8 0
3 years ago
-6y + 10 = 8<br> I need to solve for y
Radda [10]

Answer:

\frac{1}{3}

Step-by-step explanation:

I did this bfor. You have got to trust me.

8 0
3 years ago
Read 2 more answers
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