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KatRina [158]
3 years ago
9

Please solve at least one. thanks!​

Mathematics
2 answers:
oksano4ka [1.4K]3 years ago
7 0

Answer:

-9/8

Step-by-step explanation:

We simplify the fraction, then we isolate the variable

Elza [17]3 years ago
6 0

Answer:

Step-by-step explanation:

42) 9/4 = 2/x

You can solve it by cross multiplication:

In cross multiplication the numerator of first expression will be multiplied by th denominator of 2nd expression and the numerator of second expression will be multiplied by the   denominator of 1st expression.

So,

9/4 = 2/x

9*x = 2*4

9x=8

Divide both the sides by 9

9x/9 = 8/9

x= 8/9

44) -3/8 = r/3

Perform cross multiplication:

-3 *3 = 8* r

-9=8r

Divide both the sides by 8

-9/8 = 8r/8

-9/8 = r

46) -9/2n = -5/7

Perform cross multiplication:

-9 * 7 = 2n* -5

-63= -10n

negative signs will be cancelled out by each other.

63= 10n

Divide both the sides by 10

63/10 = 10n/10

63/10 = n ....

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F(x) = x + 2 g(x) = x – 4 (f g)(x) =
Sauron [17]

Answer:

x² - 2x - 8

Step-by-step explanation:

The notation (f·g)(x) means to multiply the two functions. Use the distributive property to simplify.

(f·g)(x) = (x+2)(x-4) = x² + 2x - 4x - 8 = x² - 2x - 8

4 0
3 years ago
Read 2 more answers
Reflect the point in a the x- axis and b the y-axis (-2,6)
avanturin [10]
If you were to reflect them, the answer would be the same numbers with the opposite sign. Therefore, the answer should be (2,-6) hope that helped!!!!
3 0
3 years ago
Which expression is equivalent to 63?<br> а<br> 06x3<br> О 6х6х6<br> я<br> 6х6х6х6<br> O3х3х3х3х3х3
Ne4ueva [31]
None of them? 6x3 is 18, 6x6x6 is 216, 6x6x6x6 is 1296, and 3x3x3x3x3x3 is 729
4 0
3 years ago
20 points . I need help with this.
pishuonlain [190]

Answer:

1) 117

2) 51

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Step-by-step explanation:

5 0
2 years ago
Find the value of k such that the quadratic equation x(x-2k)+6=0 has real and equal roots
Musya8 [376]

Answer:

k= \frac{x^{2}+6 }{2x}

Step-by-step explanation:

x(x−2k)+6=0

Step 1: Add -x^2 to both sides.

−2kx+x2+6+−x2=0+−x2

−2kx+6=−x2

Step 2: Add -6 to both sides.

−2kx+6+−6=−x2+−6

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Step 3: Divide both sides by -2x.

−2kx /−2x  = −x2−6 /−2x

k =

4 0
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