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lubasha [3.4K]
3 years ago
13

How can you determine if an angle is a right angle?

Mathematics
1 answer:
Aliun [14]3 years ago
8 0
Use pythagoras
in a triangle
h^2 = a^2 + b^2  if  right angle.
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Equality of fractions
Svetach [21]

Answer:

Fractions are equal when one fraction can be obtained from the other.

Step-by-step explanation:

equality means a relationship between two quantities or, more generally two mathematical expressions, asserting that the quantities have the same value, or that the expressions represent the same mathematical object.

6 0
2 years ago
30,200 died in car accidents per year. How many deaths per day
swat32
I thnk 83 if the year has 365 days

4 0
3 years ago
Which quadratic function in vertex form can be represented by the graph that has a vertex at (3, -7) and passes through the poin
yarga [219]

~~~~~~\textit{vertical parabola vertex form} \\\\ y=a(x- h)^2+ k\qquad \begin{cases} \stackrel{vertex}{(h,k)}\\\\ \stackrel{"a"~is~negative}{op ens~\cap}\qquad \stackrel{"a"~is~positive}{op ens~\cup} \end{cases} \\\\[-0.35em] ~\dotfill

\begin{cases} h=3\\ k=-7 \end{cases}\implies y=a(x-3)^2-7\qquad \textit{we also know that} \begin{cases} x=1\\ y=-10 \end{cases} \\\\\\ -10=a(1-3)^2-7\implies -3=a(-2)^2\implies -3=4a\implies -\cfrac{3}{4}=a \\\\[-0.35em] ~\dotfill\\\\ ~\hfill y=-\cfrac{3}{4}(x-3)^2-7~\hfill

5 0
2 years ago
Select the property of equality used to arrive aSelect the property of equality used to arrive at the conclusion.
vovikov84 [41]

would it be b

 I really don't know thou

7 0
3 years ago
Read 2 more answers
What polynomial function could be represented by the graph below
kotegsom [21]

Answer:

(B). F(X)=2x^2+2x-4

Step-by-step explanation:

-4 means it passes through -4 at the y axis

B and D have -4

graph passes thru x axis at -2 and 1

if you enter x = -2 or 1 in the formula

(B). F(X)=2x^2+2x-4

you get 0

it's not D because when you enter -2 or 1 for x

you don't get 0

you get 8 and -4

3 0
2 years ago
Read 2 more answers
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