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STatiana [176]
3 years ago
5

Help me please heleldndnndhdbdbdbfbfbfbd

Mathematics
1 answer:
saul85 [17]3 years ago
3 0

ok so if 2/3 of her class went and thats 60 then what is half of 60?

30

1/3 of her class represents 30 kids and 1/3 is missing

and 60+30=90

there are 90 kids. hope this helps

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Y-1=4y-2/3<br> y=_____<br> solve
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Y - 1  =  4y - 2/3.      Move the ys over to one side,  +4y crosses over to become -4y,
                                  and -1 crosses over the right side to become +1.
y -4y  = -2/3  + 1
-3y  =    1 - 2/3
-3y =  1/3          Divide both sides by -3.

-3y/-3  = (1/3) / -3.
y  =  1/3  * -1/3
y =  - 1/9

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Write an expression for the situation
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3b

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You owe your mom 10$. You pay her back 7$. Write an expression that can be used to represent this situation.
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QUESTION 20
Elodia [21]

Answer:

B. -55

Step-by-step explanation:

La resta entre ambas funciones consiste en la sustracción de términos semejantes como demostraremos a continuación:

1) f(x) =-2\cdot x ^{2}-6 Dado

2) g(x) = x+4 Dado

3) (f-g)(x) = (-2\cdot x^{2}-6)-(x+4) Definición de resta de funciones.

4) (f-g)(x) = (-2\cdot x^{2}-6)+(-1) \cdot (x+4)        (-1)\cdot a = -a

5) (f-g)(x) = (-2\cdot x^{2}-6) + (-x-4) Propiedad distributiva/(-1)\cdot a = -a

6) (f-g)(x) = -2\cdot x^{2}-x+(-6-4) Propiedad conmutativa

7) (f-g) (x) = -2\cdot x^{2}-x-10 Sustracción de términos semejantes/Resultados.

A continuación, evaluamos la función resultante en x = -5:

(f-g)(-5) = -2\cdot (-5)^{2}-(-5)-10

(f-g)(-5) =-55

Por ende, la respuesta correcta es B.

8 0
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All tablet computers are on sale for 15% off at Just Tablets.
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It would be A:303.45$ because 357-53.55 which would be 303.45$
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