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3 years ago

Gabriella is three years younger than her sister, Amy. If

Mathematics

2 answers:

seraphim [82]3 years ago

7 0

Answer:

Amy is 8 years old.

Step-by-step explanation:

5 + 3 = 8

If Gabriella is three years younger then Amy then all you have to do is add 5 (Gabriella's age) plus 3 (how much older Amy is than Gabriella) and that is 8.

NemiM [27]3 years ago

6 0

Answer:

5+3 is Amy, so Amy is 8

Step-by-step explanation:

So, lets say amy is a

and gabriella is g

WE know that g=5, because gabriella is 5 years old

And, Gabriells is younger than Amy, so we need to add to get Amy's age

So, 5 ( Gabriella's age ) + 3=Amy

So, 5+3= Amy

So Amy is 8

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What is the perimeter of the triangle shown on the coordinate plane,to the nearest tenth of a unit ?

ollegr [7]

Answer:

25.6 units

Step-by-step explanation:

From the figure we can infer that our triangle has vertices A = (-5, 4), B = (1, 4), and C = (3, -4).

First thing we are doing is find the lengths of AB, BC, and AC using the distance formula:

$d=\sqrt{(x_2-x_1)^{2} +(y_2-y_1)^{2}}$

where

$(x_1,y_1)$ are the coordinates of the first point

$(x_2,y_2)$ are the coordinates of the second point

- For AB:

$d=\sqrt{[1-(-5)]^{2}+(4-4)^2}$

$d=\sqrt{(1+5)^{2}+(0)^2}$

$d=\sqrt{(6)^{2}}$

$d=6$

- For BC:

$d=\sqrt{(3-1)^{2} +(-4-4)^{2}}$

$d=\sqrt{(2)^{2} +(-8)^{2}}$

$d=\sqrt{4+64}$

$d=\sqrt{68}$

$d=8.24$

- For AC:

$d=\sqrt{[3-(-5)]^{2} +(-4-4)^{2}}$

$d=\sqrt{(3+5)^{2} +(-8)^{2}}$

$d=\sqrt{(8)^{2} +64}$

$d=\sqrt{64+64}$

$d=\sqrt{128}$

$d=11.31$

Next, now that we have our lengths, we can add them to find the perimeter of our triangle:

$p=AB+BC+AC$

$p=6+8.24+11.31$

$p=25.55$

$p=25.6$

We can conclude that the perimeter of the triangle shown in the figure is 25.6 units.

6 0

4 years ago

What value of b will cause the system to have an infinite number of solutions?

Leya [2.2K]

Answer:

-6

Step-by-step explanation:

V = 6x + b

1/2 V -3 x = -3

V - 6x = -6

V - 6x = b

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3 years ago

Evaluate: x = y² if x = 8 and y = 3 A. 2 B. 509 C. 25 D. -1

Tju [1.3M]

Answer:

d I think but dont quote me

Step-by-step explanation:

idk I just guessed

4 0

4 years ago

What is the inverse of g? g(x) = 3/x+7

ikadub [295]

Given function :-

$\bf \implies g(x) = \dfrac{3}{x}+7$

To find its reverse , substitute y = g(x) .

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Replace y with f-¹(x) .

$\implies\boxed{\red{\bf f^{-1}(x) = \dfrac{3}{x-7} }}$

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