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iris [78.8K]
3 years ago
9

Sry bout the screen,BUT PLEASE HELP!!!!

Mathematics
2 answers:
Tasya [4]3 years ago
7 0

Answer:

40 mph

Step-by-step explanation:

20 miles in 1/2 hour

1/2 times 2 is 1, so 20 times two is 40 mph

Bumek [7]3 years ago
5 0
It would be 40 miles per hour. That is because if 20 miles is what he can cover in a half hour, than in one full hour he would go twice the amount of time. So 20 times 2 is fourty. So 40 miles per hour is the answer.
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On Monday in Minneapolis, Minnesota, it was 0 °F
klemol [59]

Answer:

-15

Step-by-step explanation: the only numbers that can be used under a 0 is negative and since its colder it goes down -15+0 is -15

4 0
2 years ago
Read 2 more answers
Help me plz with this 4x-3=15
prohojiy [21]

Answer:

18/4

Step-by-step explanation:

4x -3 = 15

4x = 15+3

4x = 18

x = 18/4

7 0
3 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
malfutka [58]
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 :)
7 0
3 years ago
What is the probability that when a coin is flipped six times in a row, it lands heads up every time?
Elanso [62]
The possibility is 3 : 1/2 * 6/1 = 3/1
6 0
3 years ago
Which of the following is the missing reason? Statements Reasons two thirds times x plus 7 equals negative 5 Given 2x 21 = â’15
pentagon [3]

The correct option is B. Distributive property

Given,

\frac{2}{3} x+7=-5\\

On solving the above equation,

multiplying both sides by 3 we, get

2x+21=-15

now subtracting 21 from both the sides,

2x=-36\\

dividing both the sides by 2 we get,

x=-18

Since in the above steps we follow all the giving property except the distributive property.

Hence the correct option is B. Distributive property.

For more details follow the link:

brainly.com/question/13130806

6 0
2 years ago
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