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2 years ago

I need help with the working

Mathematics

1 answer:

Nina [5.8K]2 years ago

6 0

Answer:

288 cm^3.

Step-by-step explanation:

The volume of each small square = 2*2*2 = 8 cm^3

Each rectangular length of end 2*2 is made up of 12/2 = 6 squares.

There are 6 of these rectangular lengths.

So the volume = 6 * 6 * 8 cm^3

288 cm^3.

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Rounded to the nearest hundredth, what is the positive solution to the quadratic equation 0 = 2x2 + 3x – 8? Quadratic formula: x

Lynna [10]

ANSWER

1.39

EXPLANATION

The given quadratic equation is

$0 = 2 {x}^{2} + 3x - 8$

This is the same as,

$2 {x}^{2} + 3x - 8 = 0$

Comparing to

$a {x}^{2} + bx + c = 0$

We have

a=2, b=3,c=-8

Using the quadratic formula, the solution is given by:

$x = \frac{ - b \pm \: \sqrt{ {b}^{2} - 4ac} }{2a}$

We substitute the values to get,

$x = \frac{ - 3\pm \: \sqrt{ {3}^{2} - 4(2)( - 8)} }{2(2)}$

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The positive root is

$x = \frac{ - 3 + \: \sqrt{ 73} }{4} = 1.39$

to the nearest hundredth.

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3 years ago

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chubhunter [2.5K]

Answer:

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Step-by-step explanation:

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3 years ago

Natalie and John are both saving coins in jars for a rainy day. Natalie currently has 1 1/8 jars of coins, and John has 9/14 of

aivan3 [116]

Answer:

Natalie will have $1\frac{43}{56}$ jars of coins all together after receiving John's coins.

Step-by-step explanation:

Given that:

Coins Natalie have = $1\frac{1}{8}$ jars of coins

Coins John have = $\frac{9}{14}$ jars of coins

When John will give all his coins to Natalie.

Total coins Natalie have = Her coins + John's coins

Total coins Natalie have = $1\frac{1}{8}+\frac{9}{14}$

Total coins = $\frac{9}{8}+\frac{9}{14}$

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Total coins = $1\frac{43}{56}$

Hence,

Natalie will have $1\frac{43}{56}$ jars of coins all together after receiving John's coins.

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3 years ago

If you are asked to provide a set of two or more numeric answers, separate them with commas. For example, to provide the year th

garik1379 [7]

Answer: Perimeter = 66 cm and area = $66\ m^2$

Step-by-step explanation:

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