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kifflom [539]
4 years ago
15

How many solutions does the system have? x−3y=7 −2x+6y=6

Mathematics
1 answer:
kifflom [539]4 years ago
4 0
Multiply first equation by 2
2x - 6y = 14
-2x + 6y = 6
-------------------add
0x + 0y = 20
0 ≠ 20

answer
zero solution
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A construction firm bids on two different contracts. Let E1 be the event that the bid on the first contract is successful, and d
marissa [1.9K]

Calculate the probability that both bids are successful

Answer:

The probability that both contracs are successful is 0.21

Step-by-step explanation:

Given

E1 = the event that the bid on the first contract is successful

E2 = the event that the bid on the second contract is successful

P(E1) = 0.3

P(E2) = 0.7

Let P(A) represent the event that both contracts are successful

P(A) = P(E1 and E2)

Since both events are independent. P(A) becomes

P(A) = = P(E1 * P(E2)

By substituton

P(A) = 0.3 * 0.7

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7 0
4 years ago
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Answer:

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Step-by-step explanation:

6 0
3 years ago
Find x. (Use pic for more info)
V125BC [204]

Answer:

x=75

Step-by-step explanation:

Hey There!

If you didn't know the exterior angle of a triangle is equal to the sum of the opposite interior angles of a triangle

So essentially what I'm saying is that

2x-5=70+x

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now we have

2x=70+x

step 2 subtract x from each side

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8 0
3 years ago
How do i do this? Explain the answer and how it is done.
zzz [600]

Answer:

4/9ths of a cup of sugar is needed for one cup of flour.

Step-by-step explanation:

To answer this you need to scale the number of cups of flour up from 3/4 to 1  that ratio would be 4/3 (multiplying a fraction by its own reciprocal will give you 1).

We can then simply take that ratio, and scale the sugar by the same amount:

1/3 * 4/3 = 4/9

7 0
3 years ago
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nlexa [21]

Answer:

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Step-by-step explanation:

It goes down 3, over 2.

Additionally, it is going down so it is negative.

Hope this helped! If you have any questions comment! :)

6 0
3 years ago
Read 2 more answers
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