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AleksAgata [21]
3 years ago
13

Solve the following system of equations for x:

Mathematics
1 answer:
nikitadnepr [17]3 years ago
3 0

Answer:

x=0.5

Step-by-step explanation:

2x+y= -2

and

4x+y= -8 so...

2x+y= -2 = 4x+y= -8

2x+4x= 6x

y+y=2y

-2+-8= -10

6x+2y= -10

2y- -10= 12

6x=12

6/12=0.5

x=0.5

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please mark this answer as brainlist

4 0
3 years ago
What times what equals 12 but when you add those numbers together it equals negative 7
gtnhenbr [62]
(-3)*(-4)=12

(-3)+(-4)=-7
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3 years ago
Consider the function g(x) below. What are the values of the function when x=0 and x=6.
Sliva [168]

Answer:

Consider the function below. g(x) = 250 + 8x^3 + x^4 (a) Find the interval of increase. (Enter your answer in interval notation.) Find the interval of decrease. (Enter your answer in interval notation.) (b) Find the local minimum value(s). (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) Find the local maximum value…

Step-by-step explanation:

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3 0
3 years ago
Searches related to Searches related to A motorboat travels 135 kilometers in 3 hours going upstream. It travels 183 kilometers
svetlana [45]

Answer:

\large \boxed{\sf \text{The rate of the boat is } 53 \ km/h \text{, the rate of the current is }8\ km/h \ \ }

Step-by-step explanation:

Hello, let's note v the rate of the boat and r the rate of the current. We can write the following

\dfrac{135}{v-r}=3=\dfrac{183}{v+r}

It means that

135(v+r)=183(v-r)\\\\135 v + 135r=183v-183r\\\\\text{ *** We regroup the terms in v on the right and the ones in r to the left***}\\\\(135+183)r=(183-135)v\\\\318r=48v\\\\\text{ *** We divide by 48 both sides ***}\\\\\boxed{v = \dfrac{318}{48} \cdot r= \dfrac{159}{24} \cdot r}

But we can as well use the second equation:

3(v+r)=183\\\\v+r=\dfrac{183}{3}=61\\\\\dfrac{159}{24}r+r=61\\\\\dfrac{159+24}{24}r=61\\\\\boxed{r = \dfrac{61*24}{183}=8}

and then

\boxed{v=\dfrac{159*8}{24}=53}

Hope this helps.

Do not hesitate if you need further explanation.

Thank you

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3 years ago
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zzz [600]

Answer:

Step-by-step explanation:

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