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tiny-mole [99]
4 years ago
10

Whats 5x -1 = 7x + 5?

Mathematics
2 answers:
VikaD [51]4 years ago
5 0

Answer:

Step-by-step explanation:

5x - 1 = 7x + 5

-2x - 1 = 5

-2x = 6

x = -3

vaieri [72.5K]4 years ago
4 0

The answer you are looking for is x=-3

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A 16\dfrac1216 2 1 ? kilometer stretch of road needs repairs. Workers can repair 2\dfrac142 4 1 ? kilometer of road per week. Ho
olganol [36]

Answer:

7\frac{1}{3} weeks.

Step-by-step explanation:    

We have been given that a 16\frac{1}{2} km stretch of road needs repairs. Workers can repair 2\frac{1}{4} kilometer of road per week.

To find the number of weeks it will take to repair the stretch we will divide 16\frac{1}{2} by 2\frac{1}{4}

\text{Number of weeks it will take to repair the stretch of road}=16\frac{1}{2}\div 2\frac{1}{4}

Upon converting our mixed fractions into improper fractions we will get,

\text{Number of weeks it will take to repair the stretch of road}=\frac{33}{2}\div \frac{9}{4}

Dividing a fraction with another fraction is same as multiplying the 1st fraction with the reciprocal of second fraction.

\text{Number of weeks it will take to repair the stretch of road}=\frac{33}{2}\times \frac{4}{9}

\text{Number of weeks it will take to repair the stretch of road}=\frac{33*2}{9}

\text{Number of weeks it will take to repair the stretch of road}=\frac{11*2}{3}

\text{Number of weeks it will take to repair the stretch of road}=\frac{22}{3}

\text{Number of weeks it will take to repair the stretch of road}=7\frac{1}{3}

Therefore, it will take 7\frac{1}{3} weeks to repair the stretch of the road.

3 0
3 years ago
Hi if u have the answer help a kid out.. online math is so hard for what
Simora [160]

Answer:

c

Step-by-step explanation:

since his salary is increasing by 12% you take 12% of his current salary and add that to his current salary. hope this helped ya out kid :)

6 0
3 years ago
What is the 14 called in 14^2 -exponent, radical sign or base
gayaneshka [121]

Answer:

Base

Step-by-step explanation:

An exponent is a number/letter written to the top-right of a mathematical expression called the base. It means that the base will raised to a certain power.

The radical sign is a symbol for the square root of a number.

6 0
3 years ago
Please solve the problem below
mr Goodwill [35]
You would use the cosine rule for this as you have 2 lines and are given the angle between them
The angle can be figured out easily as the clock has 12 equal components, meaning each component is 360/12 which is 30
As there are 5 components between A and B the angle is 30*5 =150
You can plug all of this into the cosine rule
a^2= b^2+c^2-2bcCos(A)
So a = sqrt( 10^2 +7^2 -(2*10*7) cos150)
a=16.4 to 3 sf
5 0
3 years ago
What is the volume of a rectangular prism with a length
lana [24]

The volume of the rectangular prism is 1 inch^{3}, If the rectangular prism have a length  of 2 inches, a width of 1 inch, and a height of 1/2 inch.

Step-by-step explanation:

          The given is,

               Let, l - Length of the rectangular prism

                     w - Width of the rectangular prism

                     h - Height of the rectangular prism

Step:1

        From the given,

                    l - 2 inches

                   w - 1 inch

                   h -  \frac{1}{2} inch

Step:2

       Formula for the volume of a rectangular prism is,

                 V = w h l

      Substitute the values of the w, h and l

                     = ( 1 × \frac{1}{2} × 2 )

                     = 1

                V = 1 inch^{3}

Result:

        Thus the volume of the rectangular prism is 1 inch^{3}, for the given  rectangular prism have a length  of 2 inches, a width of 1 inch, and a height of 1/2 inch.

7 0
4 years ago
Read 2 more answers
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