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Elden [556K]
3 years ago
8

Does 0.9x+5.1x-7=2(2.5x-3) have no solution many solutions or one solution?

Mathematics
1 answer:
olganol [36]3 years ago
4 0

Answer:

This equation has ONE unique solution, which is x = 1.

Step-by-step explanation:

Let's actually solve this equation, 0.9x+5.1x-7=2(2.5x-3).

Mult. all four terms by 10 to eliminate the fractions:

9x+51x-70=2(25x-30)

Perform the indicated multiplication:

9x+51x-70= 50x - 60

Combine like terms:  60x - 70 = 50x - 60  =>  10x = 10, and x = 1

This equation has ONE unique solution, which is x = 1.

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How are coordinate planes the same ???? <br> 22 points if u can answer
Natalka [10]

Answer: Its a trick question

Step-by-step explanation:

I did this yesterday

3 0
3 years ago
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Which statement is true about the equations –3x + 4y = 12 and x – y = 1?
Firlakuza [10]
-3x + 4y = 12
x - y = 1....x = y + 1

-3(y + 1) + 4y = 12
-3y - 3 + 4y = 12
-3y + 4y = 12 + 3
y = 15

x - y = 1
x - 15 = 1
x = 1 + 15
x = 16

one solution (16,15)

6 0
3 years ago
The five members of the Traynor family each buy train tickets. During the train ride, each family member buys a boxed lunch for
larisa [96]

Let's assume

the price of each train ticket is x

we are given

total number of family members =5

so, total cost of ticket = total number of family members*the price of each ticket

so, total cost of ticket =5*x

so, total cost of ticket =5x

now, we have

each family member buys a boxed lunch for $6.50

so, total cost of lunch box = total number of family members*price of each lunch box

so, total cost of lunch box = 5*6.50

total cost of trip = total cost of ticket+total cost of lunch box

we are given

total cost of trip is $248.50

now, we can plug values

and we get

248.50=5x+5*6.50

now, we can solve for x

248.50=5x+32.5

248.50-32.5=5x+32.5-32.5

216=5x

\frac{5x}{5} =\frac{216}{5}

x=43.2

so,

the price of each train ticket is $43.2..........Answer

8 0
3 years ago
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Jason built a model of the Pentagon for a social studies project. He made each outside wall 33 centimeters long. What is the per
sammy [17]

Answer:

165 centimeters

Step-by-step explanation:

A pentagon has 5 sides

Each side is 33 centimeters long

5 x 33 = 165

8 0
3 years ago
Solve for g: C = 1/2gk
sweet-ann [11.9K]

Answer:

G = \frac{C(2)}{k}

Step-by-step explanation:

C = 1/2gk

First you want to multiple both sides by 2 to get rid of that fraction and you get

C (2) = gk then you divide both sides by k to isolate the g and your left with

G= \frac{C(2)}{k}

Hope this helps

5 0
3 years ago
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