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sashaice [31]
3 years ago
15

Please help me, no random answers or links, please.

Mathematics
1 answer:
kipiarov [429]3 years ago
4 0

Answer:

3. (-3,4)    x=-3, y=4

Step-by-step explanation:

1. 3x-y=-13

  -y=-13-3x

  y=13+3x

2. 4x+2y=-4

   4x+2(13+3x)=-4

   4x+26+6x=-4

    10x+26=-4

    10x=-4-26

    10x=-30

    x=-30/10

    x=-3

3.  y=13+3x

    y=13+3(-3)

    y=13-9

    y=4

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Milena wants to power toy cars and helicopters using batteries. Her goal is to power at least 11 toys with a most 60 batteries .
Anni [7]

Answer:

8 helicopters at most

Step-by-step explanation:

I worked on this problem and that was the answer not 99 like the other.

6 0
3 years ago
4x • 7y = 4.7.x.y<br> Property<br> What is this property
patriot [66]

Answer: puppy love is the best love and thats on periodt

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5 0
3 years ago
16. Mum went shopping at the vegetable stand.
kondaur [170]

Good evening

Answer:

<em>a) the cost of one apple is €</em><em>0.9</em>

<em>b) the cost of one pineapple is €</em><em>5.4</em>

<em>c) the cost of two pineapples and six apples is €</em><em>16.2</em>

Step-by-step explanation:

Consider P the price of a pineapple

               A the price of an apple

A pineapple costs six times as much as an apple means P = 6A

Mum paid €7.20 for one pineapple and two apples means P + 2A = 7.20

then

6A + 2A = 7.20

then

8A = 7.20

then

A = €0.9  

Since P = 6A then P = 6×(0.9) = €5.4

the cost of two pineapples and six apples

= 2P + 6A

= 2P + P

= 3P

= 3×(5.4)

= €16.2

     

7 0
4 years ago
What is the 9the term of the sequence?
jeka57 [31]

Answer

A. 196,608

Step-by-step explanation:

-12/3 = -4

48 / -12 = -4  and -192 / 48 = -4

This is a geometric sequence with common ratio -4.

an = a1 r^(n -1)  so:-

9th term (a9)  =   3*(-4)^(9-1)

= 196,608

7 0
3 years ago
Read 2 more answers
Identify the absolute extrema of the function and the x-values where they occur.
sladkih [1.3K]
f(x)=6x+\dfrac{24}{x^2}+3\\&#10;f'(x)=6-\dfrac{48}{x^3}\\&#10;6-\dfrac{48}{x^3}=0\\&#10;6x^3-48=0\\&#10;6x^3=48\\&#10;x^3=8\\&#10;x=2\\&#10;

For x the derivative is negative.
For x>2 the derivative is positive.
Therefore at x=2 there's a minimum.

f_{min}=6\cdot2+\dfrac{24}{2^2}+3=12+6+3=21

6 0
3 years ago
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