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Sati [7]
3 years ago
8

There are two trees in a garden (A and B) and on both trees are some birds.

Mathematics
1 answer:
olga55 [171]3 years ago
3 0
<span>"If one of you comes to our tree, then our population will be double that of yours."

So </span>A+1 =2\times (B-1)&#10;&#10;A+1 = 2B - 2

<span>"If one of you comes here, then our population will be equal to that of yours."
</span>
A-1 = B+1

Rearranging these to make A the subject gives:

A = 2B-3
A = B +2

Then solve for B:

2B - 3 = B + 2&#10;B = 5

Substitute B back in to an equation:

A = B + 2&#10;A = 5 + 2&#10;A = 7

<u>So there are seven birds in A, and 5 birds in B</u>


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klio [65]

If this helps you consider making it brainliest as it helps me out.

2(x+4y) is the equivalent expression.

Let’s say x = 1 and y = 2

Then 2x + 8y would be 18

Same thing for 2(x+4y)

Hope this helps!

7 0
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Nadusha1986 [10]
It is c because 8x2=16 and 8x4=32 and so on
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Let Q(x, y) be the predicate "If x &lt; y then x2 &lt; y2," with domain for both x and y being R, the set of all real numbers.
Levart [38]

Answer:

a) Q(-2,1) is false

b) Q(-5,2) is false

c)Q(3,8) is true

d)Q(9,10) is true

Step-by-step explanation:

Given data is Q(x,y) is predicate that x then x^{2}. where x,y are rational numbers.

a)

when x=-2, y=1

Here -2 that is x  satisfied. Then

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4 this is wrong. since 4>1

That is x^{2}>y^{2} Thus Q(x,y) =Q(-2,1)is false.

b)

Assume Q(x,y)=Q(-5,2).

That is x=-5, y=2

Here -5 that is x this condition is satisfied.

Then

(-5)^{2}

25 this is not true. since 25>4.

This is similar to the truth value of part (a).

Since in both x satisfied and x^{2} >y^{2} for both the points.

c)

if Q(x,y)=Q(3,8) that is x=3 and y=8

Here 3 this satisfies the condition x.

Then 3^{2}

9 This also satisfies the condition x^{2}.

Hence Q(3,8) exists and it is true.

d)

Assume Q(x,y)=Q(9,10)

Here 9 satisfies the condition x

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81 satisfies the condition x^{2}.

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6 0
3 years ago
Math - Ratios
Llana [10]
The answer is 9 : 5
36:20
18:10
9:5
8 0
3 years ago
PLS help!! need answers for both Part A &amp;B
Vladimir79 [104]

Answer:

Step-by-step explanation:

Part A:

3x+12+7x+88=180

10x+100=180

10×=80

X=8

Part B:

m<RPS=3x+12

(3*8)+12

=36

7 0
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