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3 years ago

Evaluate 3ab for a = 2 and b = 3. 6 9 18

Mathematics

2 answers:

yan [13]3 years ago

8 0

Answer:

3ab when a = 2 and b = 3

(3)(2)(3) = 6(3) = 18

Step-by-step explanation:

strojnjashka [21]3 years ago

4 0

3ab...when a = 2 and b = 3

(3)(2)(3) = 6(3) = 18

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Two consecutive positive numberside are such that the sum of their squares is 113. Find the two numbers

PolarNik [594]

the two consecutive numbers are 56 and 57

x+x+1=113

2x+1=113

2x=113-1

2x=112

x=112/2

x=56

therefore, x=56

x+1= 56+1= 57

3 0

3 years ago

the area of a rectangular volleyball court is 1800 square feet the courts length is twice it width write a system of equations t

Marianna [84]

Answer:

The dimensions of the rectangular volleyball court are 60 ft x 30 ft

Step-by-step explanation:

Let

x ----> the length of rectangular volleyball court

y ---> the width of the rectangular volleyball court

we know that

The area of the rectangular volleyball court is equal to

$A=xy$

$A=1,800\ ft^2$

$1,800=xy$ ----> equation A

$x=2y$ -----> equation B

substitute equation B in equation A

$1,800=(2y)y$

$1,800=2y^2$

Solve for y

Simplify

$900=y^2$

take square root both sides

$y=30\ ft$

<em>Find the value of x</em>

$x=2y$

substitute the value of y

$x=2(30)=60\ ft$

therefore

The dimensions of the rectangular volleyball court are 60 ft x 30 ft

7 0

3 years ago

Subtract 15 and 4 , double the difference, and then add two-thirds

mrs_skeptik [129]

15-4 = 11

11 x 2 = 22

22 + 2/3 = 68/3

3 0

3 years ago

Read 2 more answers

(3x – 5 – 7x2) – (–2 + 6x2 – 5x)

Gemiola [76]

Answer:

8x-13x²-3

Step-by-step explanation:

you first have to work with the negative sign and the brackets by multiplying the negative sign by everything in the second brackets

3x-5-7x²+2-6x²+5x

then group the like terms

3x+5x-7x²-6x²+2-5

8x-13x²-3

I hope this helps

6 0

3 years ago

Solve by completing the square with working out <br><br> -6x-x^2-8

Goryan [66]

-6x-x^2-8 = -(x+2) x (x+4)

(This is if you are factoring the expression)

7 0

3 years ago