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7nadin3 [17]
3 years ago
15

PLEASE HELPPPPPP!!!!!!Solve this system of linear equations separate the x-and y-values with a comma

Mathematics
1 answer:
GenaCL600 [577]3 years ago
8 0

Answer:

x=-6,\\y=6

Step-by-step explanation:

Rewrite the system of equations as:

\begin{cases}-13x+2y=90\\-6x+2y=48\end{cases}

Subtract the second equation from the first to isolate x:

-13x+2y-(-6x+2y)=42,\\-7x=42, \\\fbox{$x=-6$}

Plug in x=-6 into any of the equations above and solve for y:

-6(-6)+2y=48,\\2y=12,\\\fbox{$y=6$}

Verify that the solution pair (-6, 6) works \checkmark

Therefore, the solution to this system of equations is:

x=-6,\\y=6

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Korolek [52]

Answer:

u = 5.176 oz

Step-by-step explanation:

Given:

standard deviation = 0.4

P(x>6) = 2℅ = 0.02

The complement role:

P(A°) = P(not A)

= 1 - P(A)

P(x<6) = 1, P(x>6) = 1 = 0.02 =

= 1-0.02 = 0.98

Taking the closest probability 0.9893 which is on row 2.0 column .06 in the probability table, we now have a z score of

2.0 + 0.06 = 2.06

Zo = 2.06

Therefore, Z score is expressed as

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x = 6

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Therefore,

2.06 = (6 - u) / 0.4

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u = 5.176

5 0
3 years ago
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What are the solutions to the equation (x-1)(x+5)=0​
Yanka [14]

Answer:

x = 1, -5

Step-by-step explanation:

The answer to the equation is 0 right? So you have to find the value of x to make this equation true. To make (x - 1) equal 0, x has to equal 1, because if x equals 1, then 1 - 1 = 0. It's the same for (x + 5). X would have to equal -5. -5 + 5 = 0.

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3 years ago
At a baseball game, a vender sold a combined total of 162 sodas and hot dogs. The number of sodas sold was two times the number
Galina-37 [17]

Let hot dogs = X

So then soda would be 2x ( two times as much).


Now you have:

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3x = 162

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X =162 / 3

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Mama L [17]

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Step-by-step explanation:

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