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3 years ago

Find the solution to the system of equations.

Mathematics

1 answer:

goldenfox [79]3 years ago

8 0

Substitute

4x+2=x-4

Then solve

3x=-6

x=-2

Substitute answer into an equation to find y

y=-2-4

y=-6

So you solution is:

(-2,-6)

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What is the next to numbers In the pattern 4.15,6.3,8.45

olganol [36]

Answer:

9.54

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

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olya-2409 [2.1K]

Answer:

3, 8, 14, 30, 58

Step-by-step explanation:

As with all formulas, put the numbers in place of the corresponding variables, and do the arithmetic.

$a_1=3\qquad\text{given}\\\\a_2=8\qquad\text{given}\\\\a_3=2a_1+a_2=2(3)+8=14\\\\a_4=2a_2+a_3=2(8)+14=30\\\\a_5=2a_3+a_4=2(14)+30=58$

The first 5 terms of the sequence are 3, 8, 14, 30, 58.

4 0

2 years ago

5x^(-2)-17x^(-1)+6<br> i’m so confused pls help<br> will give brainliest

laila [671]

It's a quadratic equation in disguise. If you let $y=x^{-1}$ , then $y^2=x^{-2}$ , and we can rewrite the equation as

$5y^2-17y+6=0$

Solve for $y$ however you like; we get $y=\dfrac25$ and $y=3$ .

But we want to solve for $x$ , so we have

$y=x^{-1}=\dfrac25\implies x=\dfrac52$

$y=x^{-1}=3\implies x=\dfrac13$

5 0

4 years ago

If the temperature decreased 7 and a half degreen in 3 hours and now is -14 dedgree celsius, what was the original temperature?

prisoha [69]

-14+71/2= -6 1/2 degrees Celsius is the original temperature.

3 0

3 years ago

If (X + 8) is a factor of f(x), which of the following must be true?

julsineya [31]

Answer: C

Step-by-step explanation:

If (X + 8) is a factor of f(x), then to find the root, equate the factor to zero. That is,

X + 8 = 0

X = 0 - 8

X = -8

If -8 is substituted into f(x), the equation will tend to zero. That is,

F( -8 ) = 0

C is therefore the correct answer.

4 0

4 years ago