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amm1812
4 years ago
10

Tony’s check for dinner was $15.90. How much change will he gett from a $20 bill

Mathematics
1 answer:
netineya [11]4 years ago
6 0

Answer:

The answer is $4.10

Step-by-step explanation:

You have to subtract 15.90 from 20

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El costo de producir 10 juegos de video al día es de 350 dólares , mientras que producir 30 juegos del mismo tipo al día cuestan
Dovator [93]

Answer:

El coste de producir un juego de vídeo es de 125 dólares.

Step-by-step explanation:

(This exercise is written in Spanish and is incomplete. Complete statement will be presented below)

El costo de producir 10 juegos de video al día es de 350 dólares , mientras que producir 30 juegos del mismo tipo al día cuestan 850 dólares . Si suponemos un modelo lineal como el descrito anteriormente , determine:

¿Cuál es el costo de producir un juego de vídeo?

(Explanation will be held in Spanish)

El modelo lineal es un polinomio de primer orden de la forma:

y = a\cdot x + b

Donde:

x - Variable independiente (eje x - Cantidad de juegos de vídeo producidos - Adimensional)

y - Variable dependiente (eje y - Coste de producción de juegos de vídeo - Dólares)

a - Pendiente de la función.

b - Intercepto en el eje y.

Dados los dos costes para dos cuotas distintas de producción, se construye el siguiente sistema de ecuaciones lineales:

10\cdot a + b = 350

30 \cdot a + b = 850

Se resuelve el sistema con algo de manipulación algebraica:

(30\cdot a + b) - (10\cdot a + b) = 850 - 350

20 \cdot a = 500

a = 25

Luego:

b = 850 - 30\cdot a

b = 100

La ecuación lineal es:

y = 25\cdot x +100

Finalmente, el coste de producir un juego de vídeo es:

y = 25 \cdot (1) + 100

y = 125

El coste de producir un juego de vídeo es de 125 dólares.

7 0
4 years ago
When two lines intersect they form two pairs of opposite angles called?
tatuchka [14]

Hello, Katrina7!

Vertical angles are when two lines intersect they form two pairs of opposite angles.

I really hope this helps;) 

5 0
3 years ago
Read 2 more answers
Mario’s company makes unusually shaped imitation gemstones. One gemstone had 10 faces and 12 vertices. How many edges did the ge
Evgen [1.6K]
20 edges 
F=12, V=10
V -E+F=2
10-E+12=2
-E+22=2
-E=-20
E=20
8 0
4 years ago
Read 2 more answers
Can you help me on this one please
Vera_Pavlovna [14]
Answer: x ≥ 1307

Explanation:

First, write the formula:
monthly fee: $14
minute rate: 7¢ or $0.07
total charge: $105.49
.07x + 14 ≥ 105.49  (the sign is this way because they said this price was the least she had been charged for a month. 
You can solve for x just like you would in an equation by making the ≥ sign an equal sign
.07x + 14 = 105.49 
        - 14      -14
.07x = 91.49
÷ .07     ÷ .07
x = 1307 minutes 
since you didn't divide by a negative number, the inequality sign stays the same:
x ≥ 1307
8 0
4 years ago
I need help :) please and thank u if u get it right i will give u brainlist :))))):)))))
Kobotan [32]
The slope is -2. The y-intercept is (0,1).
6 0
3 years ago
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