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2 years ago

-x + 2y = 5 5x - 10y = 11 Solve for x and y they have to be equal

Mathematics

2 answers:

dlinn [17]2 years ago

6 0

No solution

Hope this helps you

Mark brainliest please

antiseptic1488 [7]2 years ago

4 0

Answer:

Sorry for the late notice but I

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Answer:

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3 years ago

Select the works written by Augustine of Hippo.

Alex73 [517]

Answer:

Consolation of Philosopy..

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3 years ago

What is the difference between 2a + 5 and 2(a + 5)? Give an English expression to describe each of

Sergio [31]

Answer:

without brackets, the two is only multiplying the a. with brackets, you distribute the 2, making the equation 2a+10

Step-by-step explanation:

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3 years ago

If x = 4cosa and y = 5tana, find (x^2/16) - (y^2/25)

Cloud [144]

$x = 4 \cos(a)$

$\frac{x}{4} = \cos(a) \\$

$( { \frac{x}{4} })^{2} = ({ \cos(a) })^{2} \\$

$\frac{ {x}^{2} }{16} = {cos}^{2} (a) \\$

_____________________________________________

$y = 5 \tan(a)$

$\frac{y}{5} = \tan(a) \\$

$( { \frac{y}{5} })^{2} = ( { \tan(a) })^{2} \\$

$\frac{ {y}^{2} }{25} = {tan}^{2} (a) \\$

_____________________________________________

Thus ;

$\frac{ {x}^{2} }{16} - \frac{ {y}^{2} }{25} = \\$

${cos}^{2} (a) - {tan}^{2} (a)$

3 0

2 years ago

find the value of the letter in each of the following and give reasons for the steps involved 1 2 A+6 A B=A 0 9

nekit [7.7K]

Question:

Find the value of the letter in each of the following and give reasons for the steps involved:

1 2 A

+ 6 A B =

A 0 9

Answer:

128 + 681 = 809

Step-by-step explanation:

Here, let's use the general form of numbers where any letter must represent one value and each digit must be represented by just one letter.

Take the following:

A = 8

B = 1

Thus, A +B = 8 + 1 = 9

Also add:

8 + 2 = 10

In general form, tens digit is zero and the 1 is carried over.

I.e, A = 1 + 6 + 1 = 8

We can now see that,

A = 8

B = 1

Therefore,

1 2 A

+ 6 A B =

A 0 9

Will be written as:

128 + 681 = 809

4 0

3 years ago