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Bumek [7]
3 years ago
5

13) -3x - 4y = 8-4x - 3y=6​

Mathematics
1 answer:
Dvinal [7]3 years ago
6 0

Answer:

x = 0, y = -2

Step-by-step explanation:

-3x - 4y = 8  (1)

-4x - 3y=6​ (2)

Multiply (1) by -4 and (2) by -3, we have:

12x + 16y = - 32  (3)

12x + 9y= -18​ (4)

Subtract (4) from (3), we have:

(12x + 16y) - (12x + 9y) = - 32  - (-18)

<=> 7y = - 14

=> y = - 2

Replace y with - 2 in (3), we have x = 0

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Write a numerical expression to represent the phrase.<br><br> the difference of 4 cubed and 25
7nadin3 [17]

Hello!

First, "the difference" of 2 numbers means you subtract these numbers.

Then, 4 cubed is written as follows:

4³

Subtract:

4³-25

[If necessary] Evaluate:

64-25

39

Hope everything is clear.

Let me know if you have any questions!

Always remember: Knowledge is power!

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2 years ago
I guessed “doesn’t matter” but I really want to know why it might be that
chubhunter [2.5K]
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For spinner A, there are 5 equal sections with a 1 being in only one of them as well. This gives you a \frac{1}{5} chance of landing on the number 1.

For spinner B, there are 6 equal sections with a 1 being in only one of them. This gives you a \frac{1}{6} chance of landing on the number 1 - a worse chance than if you were to use spinner A.

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2 years ago
3 numbers are in arithmetic progression their sum is15 and their product is 80 determine the 3 numbers
Mashcka [7]

Answer:

2, 5, 8

Step-by-step explanation:

For starters, let us assume that the numbers are x-d, x, and x+d.

Where d is the common difference between terms.

This mean that we can say, from the question

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On the other hand,

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3 years ago
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