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Sergeeva-Olga [200]
3 years ago
8

2x-y=6 and 5x+10y=-10

Mathematics
1 answer:
horsena [70]3 years ago
6 0
2x - y = 6
5x + 10y = -10

<span>( 2x - y = 6 ) * 5
</span>10x - 5y = 30

<span>( 5x + 10y = -10 ) * 2
</span>10x + 20y = -20

If we subtract the last 2 equations,
30y = -50
y = -(5/3)

2x - (-5/3) = 6
2x + (5/3) = 6
2x = 6 - (5/3)
2x = (18-5)/3
2x = 13/3
x = 13/6

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To solve -3 = -19 + d/5, what steps would you use?
Pachacha [2.7K]

To solve the expression, the steps are add 19 and multiply by 5

<h3>How to solve the expression</h3>

Given the equation;

-3 = -19 + d/5

First,

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Add the values on the left side

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2 years ago
Estimate the sum.<br> 85<br> + 61.7
Slav-nsk [51]

Answer:

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murzikaleks [220]

Answer: The answer is as follows:

Step-by-step explanation:

From the given information, we have

Let A {x ∈ N : 3 ≤ x ≤ 13}, B {x ∈ N : x is even}, and C {x ∈ N : x is odd}

A = {3,4,5,6,7,8,9,10,11,12,13}

B = {2,4,6,8,10,12,14,..........,....}

C = {1,3,5,7,9,11,13,15,17,...........,}

(a) A∩B = {4,6,8,10,12}

(b) A∪B = {3,5,7,9,11,13 and x ∈ N : x is even}

(c) B∩C = {∅}

(d) B∪C = { x ∈ N : x is even and x ∈ N : x is odd}

Example of sets A and B when A ∩ B = {3, 5} and A ∪ B = {2, 3, 5, 7, 8}

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3 years ago
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43

Step-by-step explanation:

multiply 4 x c(12)=48

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The graph models the cost of a cheese pizza with extra toppings at two different restaurants. According to the graph, about how
den301095 [7]

We have been given a graph that models the cost of a cheese pizza with extra toppings at two different restaurants. Now using the graph, we have to find about how many pizza toppings must be added to make the cost of the pizzas from both restaurants equal.

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