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jonny [76]
4 years ago
12

Which number is a rational number? V34 V13/16 V9/2 V49

Mathematics
1 answer:
WARRIOR [948]4 years ago
8 0

Answer:

√49 = 7

Step-by-step explanation:

√49 = 7 is the only given number that is rational.

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The perimeter of a rectangle changes from 2.5 to 10 after dilation what was the scale factor of the dilation
yan [13]
The scale factor is 4 (10/2.5).

Each side has increased by a factor of 4. Think of it logically, if the original rectangle had sides of 1,1,1/4,1/4, the perimeter would add to 2.5. In order to get the sides to add up to 10, each of the sides would need to be multiplied by 4. Then our sides would measure 4,4,1,1 with a perimeter of 10.
6 0
3 years ago
Read 2 more answers
Help me please answer
neonofarm [45]

Answer:

Volume of cone = 90 ft³

Step-by-step explanation:

diameter of cone = 6ft

radius of cone = 3ft

height = 10ft

Volume of cone = \frac{\pi r^2h}{3}

V = (3 × 3 × 3 × 10)/3

V = 270/3

V = 90 ft³

3 0
3 years ago
Which of the following are NOT the lengths of the sides of a triangle?
Evgesh-ka [11]
2,3,6 because 2 and 3 cant equal 6

7 0
3 years ago
Dave has $8000 to invest for 15 years. He finds a bank that offers an interest rate of 3.1% compounded monthly. How much money w
ioda

Dave will have $12,728 after 15 years, if he has $8000 to invest for 15 years. He finds a bank that offers an interest rate of 3.1% compounded monthly.

Step-by-step explanation:

The given is,

                 Investment = $ 8000

               No. of years = 15 years

             Interest rate, i = 3.1 %

                 ( compounded monthly )  

Step:1

          For for calculating future value with compound interest monthly,

                                     A = P (1 +\frac{r}{n})^{nt}.................(1)

         Where,

                     A = Future amount

                     P = Initial investment

                     r = Rate of interest

                    n = Number of compounding in a year

                     t = Time period

Step:2

           From given values,

                           P = $8000

                            r =  3.1%

                            t = 15 years

                            n = 12 ( for monthly)

           Equation (1) becomes,

                          A = 8000( 1+\frac{0.031}{12} )^{(12)(15)}

                              = 8000 (1+0.002583)^{180}

                              = 8000(1.002583)^{180}

                              = 8000(1.591059)

                              =12728.48

                           A = $ 12728.48

Result:

           Dave will have $12,728 after 15 years, if he has $8000 to invest for 15 years. He finds a bank that offers an interest rate of 3.1% compounded monthly.

                             

       

8 0
4 years ago
Which is an equation of the line with slope –3 and passes through (2, –1)?
vodka [1.7K]

Answer:

d)  3x + y = 5

Step-by-step explanation:

The standard equation of a line with slope and a point is given by:

y = mx + b

We know that

m=-3

Putting the value of slope

y = -3x+b

To find the value of b, we will put the point in the equation

-1 = (-3)(2)+b

-1 = -6 + b

-1+6 = b

b = 5

Putting the values of b and m in standard equation

y = -3x+5

Can also be written as:

3x+y = 5

Hence,

Option d: 3x + y = 5 is the correct answer ..

7 0
3 years ago
Read 2 more answers
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