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Viktor [21]
3 years ago
11

Which choice is the correct answer for: 2.78 * 6? 12.78 16.28 13.18 16.68

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

Answer:

16.68

Step-by-step explanation:

You can either enter it into the calculator or do it the long way.

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A total of 120 smoothies were sold on the first day of the month from July-December. True or false
melisa1 [442]

Answer:

the answer would basically be 720 smoothies in total from Jul.-Dec.

Step-by-step explanation:

YWW :)

6 0
3 years ago
What is parrallel to y=-1/3+5 and goes through points (9,-1).
pentagon [3]
Well parallel means that it's going to stay next to a line, but never touch the other line. In order for this to happen, the equation of the line needs to have the same slope as the other line's equation. So, keep the slope the same, but you'll need a new y-intercept.
<em>Rewrite the equation:
y=-1/3x+b
Plug in your points (9,-1):
-1=(-1/3)(9)+b
-1=-3+b
Add 3 to both sides:
2=b
Plug b into your new equation:
y=-1/3x+2 *The answer!! :)
</em>
4 0
3 years ago
11. Which matrix represents the system of equations below?
dimulka [17.4K]

Answer:

\left[\begin{array}{cccc}-12&-13&13&|15\\7&-10&-3&|11\\7&14&5&\:\:\:|-5\end{array}\right]

Step-by-step explanation:

The system of equations is;

-12x-13y +13z =15

7x-10y-3z = 11

7x+14y +5z = -5

The coefficient matrix is \left[\begin{array}{ccc}-12&-13&13\\7&-10&-3\\7&14&5\end{array}\right]

The constant matrix is \left[\begin{array}{c}15\\11\\-5\end{array}\right]

The augmented matrix is \left[\begin{array}{cccc}-12&-13&13&|15\\7&-10&-3&|11\\7&14&5&\:\:\:|-5\end{array}\right]

4 0
4 years ago
Sec^4x-tan^4x=sec^2x+tan^2x
tino4ka555 [31]
\sec^4x-\tan^4x=(\sec^2x-\tan^2)(\sec^2x+\tan^2x)=\sec^2x+\tan^2x

since \tan^2x+1=\sec^2x.
5 0
3 years ago
Do the side lengths 4, 8, and 10 form a triangle? Select the correct answer and reasoning. Question 19 options: A) Yes, because
OleMash [197]

Answer:

A) Yes, because the sum of any two side lengths is greater than the third side length.

Step-by-step explanation:

All triangles have a property that the sum of two side lengths is greater than the remaining side length.

4 + 8 = 12 > 10, making it a triangle

3 0
2 years ago
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