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2 years ago

Hello, I'm working from online school but I don't get any of these.

Mathematics

1 answer:

AysviL [449]2 years ago

6 0

Answer:

7. complementary angles

8. supplementart angles

9. adjacent angles

10. vertical angles

11. complementary angles

12. adjacent angles

Step-by-step explanation:

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6-3y+(-7y)+5.6 i really need answers

lianna [129]

Answer:

+2 • (25y + 29)/5

Step-by-step explanation:

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2 years ago

A store pays$344 for a chandelier and marks the price up by

Yanka [14]

The answer is 481.60000

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3 years ago

2. (8 points) If you have n gold coins with one a fake that you know is slightly lighter, how many weighings on the pan balance

pogonyaev

Answer:

Only 1 Time

Step-by-step explanation:

Since you know that one coin is fake and that the coin is lighter than the rest , then you would only need to weigh all the coins together 1 time to ensure that you will find the fake coin. We can determine this by doing the following.

Example:

Lets say we have 100 coins that weigh 1 gr each. Meaning that the total weight of the 100 coins would be (100coins*1gr = 100gr) IF there are no fake coins in the batch.

Knowing this we can weigh the entire batch 1 time and if the total weight is less than 100gr we know that the fake coin is in that batch.

I hope this answered your question. If you have any more questions feel free to ask away at Brainly.

5 0

3 years ago

Od 2 ( 2 7 1-3 1 3 1-2 6:1-6 b = d = IDONE

Lena [83]

Answer:

$a = \boxed{1},\: b=\boxed{0}\\\\c=\boxed{0},\: d=\boxed{1}$

Step-by-step explanation:

$\begin{bmatrix} 2 & 7\\\\1 & 3\end{bmatrix}\:\begin{bmatrix} -3 & 7\\\\1 & -2\end{bmatrix}=\begin{bmatrix} a & b\\\\c & d\end{bmatrix}$

Multiply both the matrices on left side, we find:

$\begin{bmatrix} 2(-3)+7(1) & 2(7)+7(-2)\\\\1(-3)+3(1) & 1(7)+3(-2)\end{bmatrix}=\begin{bmatrix} a & b\\\\c & d\end{bmatrix}$

$\rightarrow\begin{bmatrix} -6+7 & 14-14\\\\-3+3 & 7-6\end{bmatrix}=\begin{bmatrix} a & b\\\\c & d\end{bmatrix}$

$\rightarrow\begin{bmatrix} 1 & 0\\\\0 & 1\end{bmatrix}=\begin{bmatrix} a & b\\\\c & d\end{bmatrix}$

Comparing the corresponding elements of both the matrices on both sides, we find:

$a = \boxed{1},\: b=\boxed{0},\:c=\boxed{0},\: d=\boxed{1}$

7 0

2 years ago

Find f'(x) for f(x) = −7x2 + 4x − 10.

Scorpion4ik [409]

The answer is D, none of these

4 0

3 years ago