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Tresset [83]
3 years ago
11

When you have a square root times a square root do you multiply the insides as well?

Mathematics
1 answer:
skad [1K]3 years ago
8 0
\sqrt{x} \times  \sqrt{y} =  \sqrt{xy}

A square root times a square root is the square root of the product.
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TanA+tanB+tanAtanB=1 If A+B=45 degree​
djyliett [7]

Answer:

See below

Step-by-step explanation:

\tan A+\tan B + \tan A.\tan B = 1\\\\ \implies \: \tan A +  \tan B =  1 -  \tan A.\tan B  \\  \\ \implies \:  \frac{\tan A +  \tan B}{ 1 -  \tan A.\tan B } = 1\\  \\ \implies \:  \tan (A +  B) = 1 \\  \\ \implies \:  \tan (A +  B) =\tan 45 \degree \\  \\ \implies \:  A +  B = 45 \degree \\  \\  thus \: proved

8 0
2 years ago
Solve the system of equations by the substitution method. x+4y=6 y=3−x
Fiesta28 [93]

Answer:

x = 2, y = 1

Step-by-step explanation:

x + 4y = 6 and y = 3 - x have to be rearranged: x + 4y = 6 and x + y = 3

You subtract the equations to eliminate one of the variables (x) so that the other can be found

3 0
3 years ago
A store has 7 red shirts, 15 black shirts, 13
AleksAgata [21]

Answer:First you have to add all of the shirts together, which gives you: 40

Since 15 of those are black, then you need to put those 15 over the total number of 40, making it 15/40.

Then you must simplify by the highest number that will go into both, and since that number is 5, it will then go into 15 three times and it will go into 40 eight times.

That leaves you with the answer of: 3/8

6 0
3 years ago
19/23 Marks
PilotLPTM [1.2K]

Answer:

0.28

Step-by-step explanation:

Let p be the probability of pasta.

Total probability is = 1

Therefore,

0.3 + 0.42 + p = 1

0.72 + p = 1

p = 1 - 0.72

p = 0.28

The probability that it will be pasta is 0.28

4 0
3 years ago
The table shows a proportional relationship between the number of pounds of grapes
WINSTONCH [101]

Answer:

Pounds of grapes: 8; total cost: $5.52

Step-by-step explanation:

  1. Find the proportional relationship for 1. 1:0.69
  2. You can eliminate 3 off the top
  3. Try 11 first since it is the largest and the table is increasing in pounds. 11:7.59 (incorrect)
  4. Try 8. 8:5.52 (correct)
3 0
3 years ago
Read 2 more answers
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