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2 years ago

3 times 4 and one half

Mathematics

2 answers:

Semmy [17]2 years ago

7 0

13.5 is the answer.. as 4.5x3 is 13.5

yKpoI14uk [10]2 years ago

6 0

14.5 is the answer to the equation

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14 fr to 21 ft ( simply )

zimovet [89]

If you're asking the difference between 14 ft and 21 ft your answer is 7 ft, just subtract 14 from 21

6 0

3 years ago

Mr. Lewis designed a circular walkway in

NARA [144]

Answer:

The diameter is equal to the circumference divided by the number pi

Step-by-step explanation:

we know that

The circumference of the circular walkway is equal to

$C=\pi D$

where

D is the diameter

we have

$D=6\ ft$

substitute

$C=\pi (6)$

$C=6\pi\ ft$

Divide the diameter by the circumference

$\frac{D}{C}=\frac{6}{6\pi}$

$\frac{D}{C}=\frac{1}{\pi}$

$D=\frac{C}{\pi}$

The diameter is equal to the circumference divided by the number pi

8 0

3 years ago

Of every 5 CDs produced in a

Anestetic [448]

Answer:

880

Step-by-step explanation:

2/5 times 2200

4 0

2 years ago

Read 2 more answers

Is this relation a function yes or no ?

andrew-mc [135]

Answer:

Yes

Step-by-step explanation:

None of the x's repeat

6 0

2 years ago

Use completing the square to determine which of the following gives the solutions to 3x2 - 24x + 40 = 28.

jeka94

Answer:

$x=4+2\sqrt{3}$

$x=4-2\sqrt{3}$

Step-by-step explanation:

<u>Completing the square</u>

when $ax^2+bx+c=0$

Given equation:

$3x^2-24x+40=28$

Subtract 40 from both sides:

$\implies 3x^2-24x=-12$

Divide both sides by 3:

$\implies x^2-8x=-4$

Add the square of half the coefficient of $x$ to both sides:

$(\frac{b}{2})^2=(\frac{-8}{2})^2=16$

$\implies x^2-8x+16=-4+16$

Factor the left side and simplify the right side:

$\implies (x-4)^2=12$

Square root both sides:

$\implies x-4=\pm\sqrt{12}$

Add 4 to both sides and simplify the radical:

$\implies x=4\pm\sqrt{4 \cdot 3}$

$\implies x=4\pm\sqrt{4}\sqrt{3}$

$\implies x=4\pm2\sqrt{3}$

5 0

1 year ago