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Mathematics

1 answer:

artcher [175]3 years ago

5 0

The answer is A because the square root function needs to be greater than or equal to zero bc the circle is filled and you can’t have a negative radical. It’s also choice A because the -1 is outside of the radical which means it’s being translated downwards from the parent function. Hope that helps ;-;

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The distance between city A and B is 600 km. The first train left A and headed towards B at the speed of 60 km/hour. The secon

hoa [83]

$\bf \begin{array}{ccccllll}
&distance&rate(km/hr)&time(hrs)\\
&\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash&\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\textendash\\
A&d&60&t\\
B&600-d&v&t+3
\end{array}$

$\bf \textit{meaning}\implies 
\begin{cases}
d=(60)(t)
\\ \quad \\
600-d=(v)(t+3)\\
------------\\
d=\boxed{60t}\qquad thus
\\ \quad \\
600-\boxed{60t}=v(t+3)\leftarrow \textit{solve for "t"}
\end{cases}$

keep in mind, that "t" is the time when the train at A station, left towards B station

they met, at some time "t", and by the time that happened, train from A
which started 3 hours earlier, had already covered "d" distance,
whatever that is
and the train coming from B, covered, 600-d, or the difference

8 0

3 years ago

Y = x^2 - 2x - 8<br> i need the y-intercept , the vertex , and the axis of symmetry

Aloiza [94]

The answer would be
vertex = (1,-9)
y- intercept = (0,8)
axis of symmetry= x = 1

i hope this helped :)

4 0

3 years ago

What is the product of 2p+q and -3q-6+1

MissTica

(2p + q)(-3q - 5)
(2p + q)(-5 -3q)
-10p -6pq -5q -3q^2
-3q^2 -5q -6pq -10p

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3 years ago

A student randomly guesses at 10 multiple choice questions. Each question has four possible answers with only one being correct,

dlinn [17]

I would just assume <span>a) find the probability that the student guesses EXACTLY 4 correct.

</span>

8 0

3 years ago

Randy drew a triangle and stated that one side of the triangle measures 12 centimeters and another side measures 4 centimeters.

sattari [20]

Answer:

4 cm

Step-by-step explanation:

prolly cus the 12 cm is the bottom and the 4 cm is one of the sides so the other one is 4 cm

3 0

2 years ago