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2 years ago

Simplify an expression for the PERIMETER of the equilateral triangle shown below.

Mathematics

1 answer:

djyliett [7]2 years ago

6 0

The answer is 180 if right

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Pls helppp<br> math work<br> bleh

Mashcka [7]

Answer:

m = -10

Step-by-step explanation:

>:)

3 0

3 years ago

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Is 40 inch or 100 cm bigger

oksian1 [2.3K]

Answer:

40 inch

Step-by-step explanation:

1 inch=2.54cm

so 40 inch= 101.6 cm

7 0

3 years ago

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Please Help Keep getting 6.4

elixir [45]

Answer:

r = 3

Step-by-step explanation:

x^2 + 6x + y^2 - 8y = - 16

Take half the linear term and square it.

x^2 + 6x + (3)^2 + y^2 - 8y + (-4)^2 = - 16

Add the squared amounts to the right.

x^2 + 6x + 9 + y^2 - 8y + 16 = - 16 + 9 + 16

Combine on the right.

x^2 + 6x + 9 + y^2 - 8y + 16 = 9

Represent the 2 quadratics as perfect squares.

(x + 3)^2 + y - 4)^2 = 9

The radius is the square root of 9 which is 3

8 0

2 years ago

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Solve for the indicated variable: ⅖(z + 1) = y for z.

sweet [91]

Answer:

z = 5/2y -1

Step-by-step explanation:

We observe that z has ...

1 added
the sum multiplied by 2/5

To solve for z, we undo these operations in reverse order.

$\dfrac{2}{5}(z+1)=y\qquad\text{given}\\\\z+1=\dfrac{5}{2}y\qquad\text{multiply by 5/2}\\\\\boxed{z=\dfrac{5}{2}y-1}\qquad\text{subtract 1}$

5 0

2 years ago

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Find the probability that when a couple has three children, at least one of themis a girl. (Assume that boys and girls are equal

kvv77 [185]

Answer: $\bold{\dfrac{7}{8}=87.5\%}$

<u>Step-by-step explanation:</u>

"At least one girl" means P(1 girl) + P(2 girls) + P(3 girls) or 1 - P(all boys)

I will use the latter: 1 - P(all boys)

P(all boys) = $\dfrac{1}{2}\times \dfrac{1}{2}\times \dfrac{1}{2}=\dfrac{1}{8}$

$1 - P(all\ boys) \quad = \quad 1-\dfrac{1}{8}\quad =\large\boxed{\dfrac{7}{8}}$

6 0

3 years ago