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larisa86 [58]
3 years ago
9

The fastest speed recorded for a cheetah is 70 mph. This is 11 mph less than 3 times the fastest running speed of a man. What is

the fastest running speed for a man?
Mathematics
2 answers:
Aloiza [94]3 years ago
5 0
The fastest running man runs at 19.6 miles
schepotkina [342]3 years ago
4 0
The answer is 19 2/3. You just have to set up the equation which would be 3x-11=70. Afterwards you just do order of operations to subtract 11 and divide by 3
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What is the solution to 3/4(x+8)>1/2(2x+10)
Kryger [21]

Answer:

3/4(x+8)=1/2(2x+10)  

One solution was found :

x = 4

Rearrange:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :

3/4*(x+8)-(1/2*(2*x+10))=0  

Step by step solution:

Step  1  :

           1

Simplify   —

           2

Equation at the end of step  1  :

  3                1

 (— • (x + 8)) -  (— • (2x + 10))  = 0  

  4                2

Step  2  :

Step  3  :

Pulling out like terms :

3.1     Pull out like factors :

  2x + 10  =   2 • (x + 5)  

Equation at the end of step  3  :

  3                

 (— • (x + 8)) -  (x + 5)  = 0  

  4                

Step  4  :

           3

Simplify   —

           4

Equation at the end of step  4  :

  3                

 (— • (x + 8)) -  (x + 5)  = 0  

  4                

Step  5  :

Equation at the end of step  5  :

 3 • (x + 8)    

 ——————————— -  (x + 5)  = 0  

      4          

Step  6  :

Rewriting the whole as an Equivalent Fraction :

6.1   Subtracting a whole from a fraction

Rewrite the whole as a fraction using  4  as the denominator :

            x + 5     (x + 5) • 4

   x + 5 =  —————  =  ———————————

              1            4      

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding fractions that have a common denominator :

6.2       Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

3 • (x+8) - ((x+5) • 4)     4 - x

———————————————————————  =  —————

           4                  4  

Equation at the end of step  6  :

 4 - x

 —————  = 0  

   4  

Step  7  :

When a fraction equals zero :

7.1    When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.

Here's how:

 4-x

 ——— • 4 = 0 • 4

  4  

Now, on the left hand side, the  4  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

  4-x  = 0

Solving a Single Variable Equation :

7.2      Solve  :    -x+4 = 0  

Subtract  4  from both sides of the equation :  

                     -x = -4

Multiply both sides of the equation by (-1) :  x = 4

One solution was found :

                  x = 4

4 0
3 years ago
Find the difference: 7 7/8 - 3 1/4=?*
vichka [17]
<span>7 7/8 - 3 1/4 = ?
(7*7/8) - (3*1/4)
49/8 - 3/4
43/8 OR 5 3/8</span>
3 0
3 years ago
Please help me with these two algebra questions. Image attached.
Vera_Pavlovna [14]

1. when x⇒∞, y=∞ and when x⇒-∞, y=-∞

So, we have a odd degree polynomial (x³ or x^5 or even x^9).

The leading coefficient is negative its end behavior matches x³ which has a positive leading coefficient.

2. when x⇒∞, y=∞ and when x⇒-∞, y=∞

So, we have a even degree polynomial (x² or x^4 or even x^{100}).

And because it matches these parent functions listed above (they all have positive leading coefficients), the leading coefficient is again positive.

answers:

1. odd and positive

2. even and positive

7 0
3 years ago
I've only learned how to solve for a single variable. :')
MariettaO [177]

Answer:brainliest plsssss

Step-by-step explanation:

1/2x+15=x

X+30=2x

30=2x-x

30=x

Number of girls in class

30-12=18

☆ the number of girls in his class are 18

7 0
3 years ago
Evaluate -2=y+5 and solve the variable
Rudiy27

Answer:

y=-7

Step-by-step explanation:

-2=y+5

-7=y

5 0
3 years ago
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