3 years ago

Freddie is reading a book that has

Mathematics

1 answer:

wel3 years ago

7 0

Answer:

140÷440(you can write it as a fraction)

=0.318181882

=0.32

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Given that

BaLLatris [955]

Answer:

x=21/5

Step-by-step explanation:

5x:9 = 7:3

Turn the ratios into fractions:

5x/9 = 7/3

Then cross mutiply

15x=63

x=21/5

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2 years ago

An accurate clock shows 8 o'clock in the morning. Through how may degrees will the hour hand rotate when the clock shows 2 o'clo

Norma-Jean [14]

Answer:

180 degrees

Step-by-step explanation:

because i said so

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1 year ago

Alexei wants to hang a mirror in his boat and put a frame around it. The mirror and frame must have an area of 19.25 square feet

zhuklara [117]

Let

x---------> the thickness of the frame in feet

At-------> Area of the mirror and the frame in square feet

we know that

$At=19.25ft^{2}$ ------> equation $1$

$At=(3+2x)*(5+2x)\\ At=3*5+3*2x+5*2x+2x*2x\\ At=15+6x+10x+4x^{2} \\ At=4x^{2} +16x+15$ --------> equation $2$

equate equation $1$ and equation $2$

$19.25=4x^{2} +16x+15\\ 4x^{2} +16x+15-19.25=0\\ 4x^{2} +16x-4.25=0$

therefore

the answer is the option

$C. 4x2 + 16x - 4.25 = 0$

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2 years ago

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Which of the following is a complex number

Kisachek [45]

What following are you choosing from

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There is a bag filled with 3 blue, 4 red and 5 green marbles. A marble is taken at random from the bag, the colour is noted and

aliina [53]

Answer:

i think the answer is 9.

Step-by-step explanation:

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