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kobusy [5.1K]
3 years ago
13

Factorise Xsquared+7x+12 Please help x

Mathematics
1 answer:
mart [117]3 years ago
7 0
The factored form would be (x+3)(x+4) since 4*3 = 12 and 4+3 = 7
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The number of dollars per month it costs you to own a car is a function of the number of kilometers per month you drive it. Base
klasskru [66]
Y=1.22x
y is the cost and x is kilometers driven. I got 1.22 by dividing 366 by 300 to find how it costs per kilometer.
7 0
3 years ago
Willing to give brainliest! Practice question I dont understand the math.
aivan3 [116]

Answer:

Step-by-step explanation:

Part A:

The interquartile range is approximately 10

Part B:

The difference between the median values for each data set  is approximately 6

Part C:

i) More widely distributed and concentrated to the beginning of the month

The better measure of the center for the male dataset is the median

ii) The skewed distribution

The mean is the better measure of center for the dataset

Part D;

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4 0
3 years ago
two years ago the cats tim and tom were toghether 15 years old.Now tom is 13 years old.In how many years will tim be 9 years old
Norma-Jean [14]

Answer:

  3 years

Step-by-step explanation:

As with many age problems, you can reason it without equations. If Tom is 13 now, 2 years ago he was 11. If the total age of the two cats at that time was 15, then Tim was 15 -11 = 4.

That means Tim is now 4+2 = 6, so will be 9 in 3 years.

_____

<em>Additional comment</em>

If you want to write equations, there are several ways you can do it. We often like to use variables to represent the current age. We can assign ...

  x = Tim's current age; y = Tom's current age.

The sum of their ages 2 years ago was ...

  (x -2) +(y -2) = 15

Tom's current age is 13, so we have y=13. Using that in the equation gives ...

  x -2 +13 -2 = 15

  x = 6 . . . . . . . . . . subtract 9, collect terms

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3 0
2 years ago
Simplify the expression<br><br> (4i)(2i)(-9i)
lakkis [162]

Answer:

Step-by-step explanation:

(4i)*(2i)*(-9i) = 4*2*(-9) * i³           { i³ = -i}

                    = -72 *(-i)          

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7 0
3 years ago
How do I solve this question?
Alex787 [66]

∠TAC = ∠ABC  (The angle between the chord and the tangent is equal to the angle in the alternate segment)

Since, EDCB is a cyclic quadrilateral,

     ∠CBD + ∠CED = 180  ----- I

-      ∠CED + ∠AED = 180   -----II

----------------------------------------------------

   ∠ CBD =  ∠AED

Hence proved

To learn more about circle geomtery, refer to brainly.com/question/24375372

#SPJ9

4 0
1 year ago
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