3 years ago

At which step did Nikita make an error, if at all?

Mathematics

1 answer:

Orlov [11]3 years ago

3 0

in step 2 she made an error

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An architect’s blueprint for a new house shows the kitchen being 7 inches wide. If the scale used to create the blueprint is 0.5

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7in * 1ft/0.5in = 14ft

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3 years ago

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A box contains 5 plain pencils and 7 pens. A second box contains 4 color pencils and 4

Savatey [412]

5:7 (pencils to pens)

7/12 chance that a pen from the first box will be selected.

4:4 (colour pencils to crayons)

4/8 = 1/2 chance that a crayon from the second box will be selected.

The probability of picking both:

7/12 * 1/2 = 8/24 = 1/3

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2 years ago

How to solve -3 1/2 + 5 4/5?

monitta

Hi. This is a bit lengthy so I am attaching an image that shows it worked out step by step. I hope it helps.

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3 years ago

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tino4ka555 [31]

The answer is C

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2 years ago

Solve for x 14 x square+7x-6

irina [24]

Answer:

x=0.450765 or x=−0.950765

Step-by-step explanation:

14x² + 7x - 6

→ Find the product, sum and factors

Product = -6

Sum = 7

Factors = No factors

→ Since there are no factors utilise the quadratic formula

$\frac{-b+-\sqrt{b^{2}-4ac } }{2a}$

→ List the values of a, b and c

a = 14

b = 7

c= -6

→ Substitute into the formula

$\frac{-7+-\sqrt{7^{2}-4*14*-6} }{2*14}$

→ Simplify

x=0.450765 or x=−0.950765

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3 years ago

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