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3 years ago

The equation below has one solution.

Mathematics

2 answers:

Gnesinka [82]3 years ago

4 0

Answer:

x=2

Step-by-step explanation:

9x-10 =3x+2

Subtract 3x from each side

9x-3x-10 = 3x-3x+2

6x -10 =2

Add 10 to each side

6x-10+10 = 2+10

6x = 12

Divide each side by 6

6x/6 = 12/6

x=2

Goshia [24]3 years ago

3 0

Answer:

Letter D, x=2

Step-by-step explanation:

Move the 3x to the other side then move the 10 to the other side, you're left with: $6x=12$ then divide both side by six and you're left with, $x=2$ .

Feel free to give me the brainliest answer!

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Slope intercept of 3x-2y=-16

otez555 [7]

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3 0

3 years ago

a quantity of ethanol is cooled from 47.9° C to 12.3°C and releases 3.12 KJ of heat. what is the mass of the ethanol sample?

victus00 [196]

Answer:

35.9 grams

Step-by-step explanation:

We use the formula:

$q=m*C_p*\Delta T$

Where

q is heat released

m is mass

C_p is the constant 2.44

ΔT is change in temperature

We put the info in the formula and solve for m (mass):

$q=m*C_p*\Delta T\\-3.12 = m*2.44(12.3-47.9)\\-3.12*10^3=m*(-86.864)\\m=35.9$

The mass of ethanol is 35.9 grams

8 0

3 years ago

PLEASE ANSWER FAST I WILL GIVE BRAINLIEST

ANTONII [103]

Answer: 10 units²

Step-by-step explanation:

We can divide the shape along the y-axis to get 2 separate triangles. If we find the area of each and add them up, we can get the total area of the figure.

We can get each triangle's area using the formula $A = \frac{1}{2}bh$