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Semmy [17]
3 years ago
15

Help me with this topic. Not sure if a is correct

Mathematics
1 answer:
Sonbull [250]3 years ago
6 0

Answer:

Step-by-step explanation:

-5x - 4y = 2a

slope of line is -5/4

4x - 5y = 2

slope of line is 4/5

Since the lines have different slopes, they intersect. There is exactly one solution, regardless of the value of a.

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Is this correct? (Correct me if im wrong and tell me what is wrong like the number!
Rudiy27

Answer:

number 1 is wrong

Step-by-step explanation:

7 0
3 years ago
Help will name Brainliest
11111nata11111 [884]

Answer:

x = \frac{\sqrt{22} }{2}

Step-by-step explanation:

Using the Pythagorean Theorem we can solve this problem.

The legs of the triangle will be the same (the dashes in the middle of the line indicates they are the same).

The Pythagorean Theorem will look like this:

a^{2}+a^{2}  = (\sqrt {11})^{2}

Now, let's find a:

2a^{2} = 11                The square of a radical will be whatever is under the arch

a^{2}=\frac{11}{2}                  Divide 11 by 2

\sqrt{a^{2} } = \sqrt{\frac{11}{2} }           Square root both sides

a = \frac{\sqrt{22} }{2}

Therefore, the length of side x is equal to \frac{\sqrt{22} }{2}.

Hope this helps!!

8 0
2 years ago
Samuel takes 5 hours to make a table and a chair. He takes 9 hours to make 3 chairs
nikklg [1K]

Answer:

3 hours

Step-by-step explanation:

t = time to make a table

c = time to make a chair

t + c = 5

t+3c = 9

Subtract the second equation from the first

t+3c = 9

-(t + c = 5)

-----------------------

       2c = 4

Divide by 2

2c/2 = 4/2

c =2

2 hours for the chair

t+c = 5

t+2 = 5

t = 5-2

t = 3hours

7 0
3 years ago
Read 2 more answers
G) 0.2° +0.28 =(0.2275
GuDViN [60]

Answer:

0.2+0.28= 0.48

Step-by-step explanation:

ADD

8 0
3 years ago
A quantity with an initial value of 980 decays exponentially at a rate of 0.3% every 6 decades. What is the value of the quantit
solong [7]

Answer:

956.73

Step-by-step explanation:

0.3% = 0.003

1-0.003 = 0.997

49/6 = 8 r1 (use 8 because decay is not continuous)

0.997^8 = 0.97625...

0.97625... x 980 ≈ 956.73

8 0
3 years ago
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