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Juliette [100K]
2 years ago
11

What is the solution of 3x + 5 = 2x - 7?

Mathematics
1 answer:
navik [9.2K]2 years ago
7 0

Answer:

X  = -12

Step-by-step explanation:

Solve for  x  by simplifying both sides of the equation, then isolating the variable.

~Hoped this helped~

~Brainilest, pelase?~

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Can someone explain how to do this
jolli1 [7]

Answer:

20%

Step-by-step explanation:

im not really good at percentages but from what i know you first make it a fraction by adding all the numbers together to get 55(denominator). then for the numerator you take the section that they want(11). 11/55 is equal to 20/100(divide 100 by 55 and multiply the quotient by 11 to get 20). 20/100 is 20%. hope this kinda helps.

7 0
2 years ago
Convert the following decimals into rational numbers:<br>1.4325​
matrenka [14]

Answer

\frac{573}{400}

step-by-step explanation:

\frac{1.4325}{1} ×  \frac{10000}{10000}  =  \frac{14325}{10000}

Simplify

\frac{14325}{10000} ÷\frac{25}{25} = \frac{573}{400}

5 0
3 years ago
The maximum speed of the Tupolev Tu-144 airliner is 694m/s what is the speed in kilometers per hour
saw5 [17]
Best Answer:<span>  </span><span>694 m = 0.694 km 
1hr = 3600 s 
3600 × 0.694 = 2498.4 km/h</span>
6 0
3 years ago
Solve the equation by completing the square round to the nearest hundredth is necessary x^2-x-7=0
masha68 [24]

The answers are 3.19 or -2.19.

In order to complete the square, you must first get the constant to the other side of the equation. WE do that by adding 7 to both sides.

x^2 - x - 7 = 0

x^2 - x = 7

Now we must take half of the x coefficient (-1), which would be -.5. Then we square it and add it to both sides. This is the second step to any completing the square problem.

x^2 - x = 7

x^2 - x + .25 = 7.25

Now that we have done that, the left side will be a perfect square so that, we can factor it.

x^2 - x + .25 = 7.25

(x - .5)^2 = 7.25

After having done that, we can take the square root of both sides

(x - .5)^2 = 7.25

x - .5 = +/-\sqrt{7.25}

Now we can take the value of that square root and solve.

x - .5 = +/-\sqrt{7.25}

x - .5 = +/-2.69

x = .5 +/- 2.69

And with the + and - both there, we need to do both to get the two answers.

.5 + 2.69 = 3.19

.5 - 2.69 = -2.19

4 0
2 years ago
A bat and a ball cost one dollar and ten cents in total. The bat costs a dollar more than the ball. How much does the ball cost?
Nastasia [14]
The answer is 5 cents because if the bat is a dollar more, then it the bat would be $1.05, and 0.05 + 1.05 = $1.10

you could also use the equation x + (x + 1) = 1.10 where x is the cost if the ball and x + 1 is the cost of the bat. x + x + 1 is the same as 2x + 1 = 1.10, and when solved x = 0.05.
7 0
2 years ago
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