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musickatia [10]
2 years ago
7

A solution to -x + 10 = 2x + 4 is 8

Mathematics
2 answers:
zhuklara [117]2 years ago
8 0

Answer:

False.

This equation has only one solution, and it is x = 2.

Step-by-step explanation:

-x + 10 = 2x + 4

Subtract 2x from both sides.

-3x + 10 = 4

Subtract 10 from both sides.

-3x = -6

Divide both sides by -3.

x = 2

False.

Georgia [21]2 years ago
7 0

Answer:

False.

Step-by-step explanation:

What is the question if you have the solution already?

I guess its a true/false question. In that case it's false because:

-x + 10 = 2x + 4

-x -2x + 10 = 4

-x - 2x = 4 - 10

-3x = -6

x = - 6 / -3

x = 2

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The subject of the sentence, girl, is a singular noun. It requires a singular personal pronoun. That is her.

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3 years ago
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Un hotel alquiló 108 habitaciones, dobles e individuales. El costo de habitación doble por noche es $78 y de habitación individu
Triss [41]
I have to assume that you want the answer in Spanish *but without using accents).

Usa las siguientes variables:

d = numero de habitaciones dobles

i = numero de habitaciones individuales

Por la primera premisa:

d + i = 180

Por la segunda premisa, los costos son tales que:

78d + 72i = 7839

Para resolver ese sistema podemos despejar una de las variables de la primera ecucacion y sustituir en la segunda:

i = 180 - d

78d + 72 (180 - d) = 7839

78d + 12960 - 72d = 7839

De aqui ya veo que va a dar un numero negativo para el numero de habitaciones dobles, asi que supongo que algun dato en el enunciado esta equivocado.

6d = 7839 - 12960 = -5121

=> d = -5121 / 6 = - 853.5


Al corregir los datos podras seguir el procedimiento que te he explicado para encontrar la solucion.
8 0
3 years ago
Find the surface area of a cylinder with a height of 2 inches and base radius of 4 inches
solmaris [256]

Answer:

Surface Area = 150.8 square inch

Step-by-step explanation:

Surface \ Area = 2 \pi r h + 2 \pi r^2  \ \ \ \ \ \ \  \ \ \ \ \ \ [ \ r = 4 , \ h = 2 \ ] \\\\

                    = 2 \pi \times 4 \times 2 + 2 \pi 4^2\\\\=16 \pi + 32 \pi \\\\= 48 \pi \\\\= 150.796 \\\\=150.8 \ square \ inch

3 0
3 years ago
The green county sale tax rate is 6.5%. What is the total cost of purchasing a pair of shoes for $35 and a shirt for $22
dezoksy [38]
$60.71! Add $35 and $22 together, which is $57. Multiply that by 6.5% (0.065), which produces 3.705, which rounds down to $3.71. Add $3.71 to $57, and voila!
6 0
3 years ago
X/5 -8=4 find the value of x
elena-s [515]

Answer:

x=60

Step-by-step explanation:

I'm assuming you meant this: (x/5)-8=4

In which case you would add 8 to both sides to get rid of the 8 on the left (your goal is to get x by itself so you want to move the numbers on the x side to the other side of the equal sign)

(x/5)=12

Then you would multiply 5 on both sides to get rid of the fraction with the 5 on the bottom on the left side.

x=60

There's your answer.

6 0
3 years ago
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