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3 years ago

Solve 2x2 + 8x + 10 = 0. using this model to he X = -b+ ✓ 62 - 4ac 2a

Mathematics

1 answer:

Lesechka [4]3 years ago

8 0

Answer:

x can have two complex solutions, which are:

-2 + i

-2 - i

Step-by-step explanation:

2x² + 8x + 10 = 0

4x² + 16x + 20 = 0

4x² + 16x + 16 = -4

(2x + 4)² = -4

2x + 4 = √-4

2x = -4 ± i√4

2x = -4 ± 2i

x = -2 ± i

So x is equal to -2 + i and -2 - i.

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Which is better estimate for the volume of a tube of toothpaste 6 tablespoon 6 cups?

Archy [21]

Answer:

6 tablespoons

Step-by-step explanation:

It's more logical because tubes of toothpaste do not require such a large amount of toothpaste. Look at your toothpaste tube. I'm sure that it is closer to 6 tablespoons rather than 6 cups.

8 0

3 years ago

Pls send me step by step pic

Thepotemich [5.8K]

To solve, simply do this:

$(\frac{1}{2}^3)-(\frac{3}{4} )^2\\\\\frac{1}{2} *\frac{1}{2} *\frac{1}{2} *\frac{1}{2} \\\\\frac{1}{8} -(\frac{3}{4})^2\\\\\frac{1}{8}-\frac{9}{16}\\\\=\frac{-7}{16}$

Then you'll get the answer, -7/16

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3 years ago

The graph shows the rate at which paint is used to paint a wall. wat are the values to each statement below based on the graph.

zhuklara [117]

Answer:

Step-by-step explanation:

When 1 gallon is has been used 400 square feet of the wall will be paint
The unit rate is 400 square feet per gallon

3 0

3 years ago

Work out the length x. 14 cm 7 cm

qwelly [4]

Answer:

14 x 7 = 98 divided by 3= 32.6

Step-by-step explanation:

Are you trying to find the length of x?

i dont know if this is the right answer

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2 years ago

A scale model of a tower is 24 inches tall and 18 inches wide. If the height of the actual tower is 60 feet, what is its width?

pochemuha

We can set up a proportion to solve this problem as follows:

height of the model/width of the model= height of the actual/width of the actual

24/18=60/x

Cross multiply,

24x=18*60

24x=1080

x=45 ft.

Therefore the answer is 45 ft.

3 0

2 years ago