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Elenna [48]
3 years ago
10

Can someone help me with this? giving brainliest to correct answer!

Mathematics
1 answer:
Reika [66]3 years ago
4 0

Answer:

see explanation

Step-by-step explanation:

(a)

x + y = 15 → (1)

(b)

xy - yx = 27 ( take into account the place value of the digits )

10x + y - (10y + x) = 27

10x + y - 10y - x = 27

9x - 9y = 27 → (2)

(c)

Multiply (1) by 9

9x + 9y = 135 → (3)

Add (2) and (3) term by term to eliminate y

18x = 162 ( divide both sides by 18 )

x = 9

Substitute x = 9 into (1)

9 + y = 15 ( subtract 9 from both sides )

y = 6

Thus the original number = (9 × 10) + 6 = 90 + 6 = 96

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Which ordered pairs are in the solution set of the system of linear inequalities?
Nataly [62]

Answer:

C

Step-by-step explanation:

The solution to the system of the inequalities lies in the shaded region between the 2 lines.

The ordered pairs (5, - 2), (3, 1), (4, 2) lie within this region ⇒ C

8 0
3 years ago
Ben rolls two standard number cubes 36 time. predict how many time he will roll a sum of four.
rusak2 [61]
You can make a 6 x 6 square to illustrate  the probabilities 

   1 2 3 4 5 6
1 2 3 4 5 6 7
2 3 4 5 6 7 8
3 4 5 6 7 8 9
4 5 6 7 8 9 *
5 6 7 8 9  * &
6 7 8 9  * & $

* =10, & =11, $ = 12, I wanted maintain spacing

There are 3 4's. So it is 3/36 chance, which is 1/12 chance.
6 0
3 years ago
All multiplication facts that us have a product of <br>32
Iteru [2.4K]
2x16
4x8
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6 0
3 years ago
Read 2 more answers
What is the area of the figure?
statuscvo [17]

Answer:

88

Step-by-step explanation:

We can divide this into 3 shapes, a square, rectangle, and triangle.

Let's solve the area of each of these shapes and add them all up.

First, let's solve the square.

We know that one side is 4 ft so that means that the other side is also 4ft.

4*4=16

Our area of the square is 16ft^2

Let's solve the rectangle next,

Its length is 12ft and its width is 4ft.

12*4=48

So the rectangle area is 48ft^2

Now for the triangle

Remember that area of a triangle is a=hb/2

Our height is 12 ft and our base is 4ft

12*4=48

48/2=24

Triangle is 24ft^2

That means that we can add them all up

24+48+16=88

88ft^2 or 88

5 0
2 years ago
List the members of these sets.
Rina8888 [55]
<span>a.{x | x is a real number such that x^2 = 1}

x^2 = 1 => x = +/- 1

=> {-1, 1} <------ answer

b.{x | x is a positive integer less than 12}

1 ≤ x < 12 => {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11} <------ answer

c.{x | x is the square of an integer and x < 100}

x = n^2 < 100 => n^2 - 100 < 0

=> (n - 10) (n + 10) < 0

=> a) n - 10 > 0 and n + 10 < 0  => n > 10 and n < - 10 which is not possible

b) n - 10 < 0 and n + 10 > 0 => n < 10 and n > - 10 => - 10 < n < 10

=> n = { - 9, - 8, - 7, - 6, - 5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9}

=> x = {0, 1, 4, 9, 16, 25, 36, 49, 64, 81} <---- answer

d.{x | x is an integer such that x^2 = 2} </span>

x =  {∅ } because x is √2 which is not an interger but an irrational number

=> Answer: { ∅ }
8 0
3 years ago
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