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2 years ago

Solve for x in the equation x squared 4 x minus 4 = 8.

Mathematics

2 answers:

wlad13 [49]2 years ago

4 0

Answer:

x=2 or -6

Step-by-step explanation:

×^2+4×-4=8

8 will enter inside and become -8

x^2+4x-4-8=0

x^2+4x-12

(x^2+6x)(-2x-12)

x(x+6)-2(x+6)

(x-2)(x+6)

x=2 or x=-6

saul85 [17]2 years ago

3 0

Answer:

±2√3

Step-by-step explanation:

Equation :

x² -4 = 8

x² -12 = 0

Using the quadratic formula then simplifying gives you :

±2√3

I know this lacks explanation but please brainliest

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There are some goats, cows and, sheep. 2/5 of the animals were goats. There were three times as many sheep than cows. If there w

kobusy [5.1K]

Answer:

81 sheep were there on the farm

Step-by-step explanation:

Consider the provided information.

Let x represents the number of goats.

y represents the number of cows.

z represents the number of sheep.

Therefore, the total number of animals are x+y+z

2/5 of the animals were goats. This can be written as:

$\frac{2}{5}(x+y+z)=x$

There were three times as many sheep than cows.

$z=3y$

There were 45 more goats than cows,

$x=45+y$

Substitute the value of x and z in equation 1.

$\frac{2}{5}(45+y+y+3y)=45+y$

$\frac{2}{5}(45+5y)=45+y$

$2(9+y)=45+y$

$18+2y=45+y$

$y=27$

Hence, there are 27 cows.

Substitute the value of y in $x=45+y$

$x=45+27$

$x=72$

Therefore, there are 72 goats.

Substitute the value of y in $z=3y$

$z=3(27)$

$z=81$

Thus, there are 81 sheep.

6 0

3 years ago

How do I do this problem

Vilka [71]

Do you mean 7?

You need to multiply each like term differently ( 1. Coefficient, 2. M term, 3. N term, and 4. O term)

1. The coefficients are 4 and 7, and as you have already solved, that equals to 28.

2. The m terms are (m • m) because there is one m in (4mno) and one m in (mn). m • m would equal to m^2.

3. The n terms are (n • n^2 •n) because there is one n in (4mno), n^2 in (7n^2o^2), and one n in (mn). They would equal n^4.

4. The o term would stay as o^2 as there are not other o terms.

To piece it all together, your answer would be 28m^2n^4o^2, or 28 • m ^2 • n^4 • o^2.

7 0

3 years ago

lora16 [44]

Answer:

(0, 3)

Step-by-step explanation:

(0, 3) is the following is the midpoint between (3, 2) and (-3, 4)

8 0

3 years ago

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Finn read 43 pages of his book in an hour

Anon25 [30]

135 /43 = 3.14

60 * 3.14 = 188.4 minutes

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3 years ago

2(5x+ 4) – 11 = 4x + 3(2x - 1)

rewona [7]

Answer:

All values of x is true

Step-by-step explanation:

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