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3 years ago

I will give barinlest im not playing im frfr and thank you

Mathematics

2 answers:

alekssr [168]3 years ago

8 0

Answer:

84 is 7 x n.

n = 84 ÷ 7

n = 12

Step-by-step explanation:

You can solve the problem by using algebraic expressions in looking for the value of n.

Let n be the no. of families in City B that have a dog.

City A is 7 times as many families with a dog than City B. You can express this as: City A = 7 x n

Since you know that City A has 84 families owning a dog. Then you can express this as: 84 is 7 x n or 84 = 7 x n.

Let's get the value of n.

84 = 7 x n

n = $\frac{84}{7}$ or n = 84 ÷ 7

n = 12

There are 12 families in City B that have a dog.

worty [1.4K]3 years ago

4 0

Answer:

n = 12

Step-by-step explanation:

84 / 7 = 12

May I have brainliest please? :)

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Who know this answer

Ray Of Light [21]

x=12,y=12√3

sin60=y/24

√3/2×24=y

y=12√3

again

24^2=x^2+y^2

576=x²+12×12×3

x²=576-432

x=√144

x=12

5 0

3 years ago

PLEASE ANSWER QUICKLY

Olegator [25]

Answer:

x=3

Step-by-step explanation:

Set equations equal to each other:

$x^3-3x^2+2=x^2-6x+11$

Subtract two from both sides

$x^3-3x^2=x^2-6x+9$
Factor out x^2 from the left side

$x^2(x-3)=x^2-6x+9$

Factor the right side, look for two factors of 9, which add to -6, which is just -3 and-3

$x^2(x-3) = (x-3)(x-3)$

So as you can see here, we have both sides in factored form, and both have a factor of (x-3) on both sides, and if one of the factors is zero, then the entire thing becomes zero, since 0 * anything= zero.

this means a solution would be at x=3, since it makes the right side 0 * 0 = 0, and the left side (3)^2 * 0 = 0

It's important to notice this, since had we divided by x-3 to make the equation a quadratic, we would've excluded this real solution, because when dividing by x-3 the solution x=3 makes it 0, so we would've been dividing by zero.

So one of the real solutions is at x=3

6 0

2 years ago

What us the midpoint of A(-8,2) and B(4,-2)

marusya05 [52]

Answer:

(-2 , 2)

Step-by-step explanation:

A(-8 , 2) = (x1 , y1)

B(4 , -2) = (x2 , y2)

midpoint = (x1 + x2/2 , y1 + y2/2)

=(-8 + 4/2 , 2-(-2)/2)