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katovenus [111]
3 years ago
5

The angle between the minute hand and hour hand of a clock is 90°. What time is it?

Mathematics
1 answer:
Andrei [34K]3 years ago
7 0

Answer:

3:00.

Step-by-step explanation:

if it exactly 90 degrees you are looking for, your answer would be 3:0:0.

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Xelga [282]

Answer:

Step-by-step explanation:

Vì tam giác ABC vuông tại C nên ta áp dụng định lí pitago=> AB²=AC²+BC²=0.9²+1.5²=3.06=>AB= (3 căn bậc hai của 34)/10

sin B=AC/AB=(3 căn bậc hai của 34)/34

cos B=BC/AB

tan B= AC/BC

cot B= BC/AC

Tương tự suy ra tỉ số lượng giác góc A

5 0
3 years ago
Which matrix represents the system of equations shown below? 2x-y=-6 and x-6y=13​
dezoksy [38]

Answer: D

<u>Step-by-step explanation:</u>

The first matrix contains the coefficients of the x- and y- values for both equations (top row is the top equation and the bottom row is the bottom equation. The second matrix contains what each equation is equal to.

\begin{array}{c}2x-y\\x-6y\end{array}\qquad \rightarrow \qquad \left[\begin{array}{cc}2&-1\\1&-6\end{array}\right] \\\\\\\begin{array}{c}-6\\13\end{array}\qquad \rightarrow \qquad \left[\begin{array}{c}-6\\13\end{array}\right]

The product will result in the solution for the x- and y-values of the system.

6 0
3 years ago
Using the section of the graph shown, which of these potential roots of the function should you test first? f(x) = 2x3 – 9x2 – 6
bixtya [17]

Answer: x  =  5 /2 , 4 , -2

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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marin [14]

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Step-by-step explanation: In order to find the distance you have to subtract the biggest number from the smallest number.

4599 - 3045 = 1554 apples

8 0
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disa [49]

Answer:

Infinite solutions.

Step-by-step explanation:

Use the elimination method:

15x - 5y = -20

-3x + y = 4              Multiply this equation by 5:

-15x + 5y = 20         Now add this to the first equation:

0 = 0

So the 2 equations are the same and there are infinite solutions.      

3 0
3 years ago
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