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USPshnik [31]
3 years ago
12

Identify which of the following equations represent functions. Select all that apply.

Mathematics
1 answer:
bagirrra123 [75]3 years ago
6 0

Answer:

Step-by-step explanation:

Nothing to choose from.

However, to be a function the x can only be used once. It has to pass the vertical line test.

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Y = -4x - 5 <br>y = 3x - 2 <br><br>Is (3, 7) a solution of the system?<br><br>Will give brainliest!​
Evgesh-ka [11]

Answer:

x=-3/7 and y=_23/7

Step-by-step explanation:

y=-4x-5 and y=3x-2

using comparison method

-4x-5=3x-2

-4x-3x=-2+5

-7x=3

x=3/-7

substituting the value of x

y=3x-2

=3×(-3/7)-2

=-9/7-2

=-9-14/7

=-23/7

6 0
3 years ago
se vendieron 144 boletos. 2 pesos por adulto y un peso por niño, si se gastaron 207 pesos cuantos boletos de adulto se vendieron
natulia [17]

Answer:

Se vendieron 81 boletos de niños y 63 boletos de adultos.

Step-by-step explanation:

La cantidad de boletos vendidos es igual a:

144 = a + n   (1)

En donde <em>a </em>es por adultos y <em>n</em> por niños

A su vez, el dinero gastado equivale:

207 = 2*a + 1*n   (2)

Resolviendo la ecuación (1) para <em>a:</em>

a = 144 - n   (3)

Introduciendo (3) en la ecuación (2) tenemos:

207 = 2*(144 - n) + n

n = 81

Ahora podemos calcular el numero de boletos de adultos vendidos introduciendo <em>n</em> en la ecuación (3):

a = 144 - n = 144 - 81 = 63

Entonces, se vendieron 81 boletos de niños y 63 boletos de adultos.  

Espero que te sea de utilidad!      

5 0
3 years ago
Quinzel and Joseph sell shoes. Last month Quinzel sold 18 less pairs
hichkok12 [17]

Answer:

Quinzel sold 17 pairs of shoes last month.

Step-by-step explanation:

Let be "Q" the number of pairs of shoes Quinzel sold last month and "J" the number of pairs of shoes Joseph sold last month.

Set up a system of equations:

\left \{ {{Q=J-18} \atop {Q+J=52} \right.

Solve for "J" from the first equation:

J=Q+18

Applying the Substitution Method, you get:

Q+J=52\\\\Q+(Q+18)=52\\\\2Q=52-18\\\\Q=\frac{34}{2} \\\\Q=17

7 0
3 years ago
How many significant numbers are in 343?
Alona [7]

Answer:

there are 3.

Step-by-step explanation:

3, 4 and 3 are all significant numbers

4 0
3 years ago
Without using a calculator, choose the statement that best describes the value of the square root of 86
zubka84 [21]
The value of square root 86 is between 9 and 9.5
5 0
4 years ago
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