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4 years ago

THIS IS 100 POINTS SOMEBODY PLEASEEEEEEEEEEEEEE HELP MEEEEE

Mathematics

2 answers:

natali 33 [55]4 years ago

7 0

Answer:

Option #4: the 0.2 could be changed to 2.

Step-by-step explanation:

Nookie1986 [14]4 years ago

3 0

Answer: Option #4: the 0.2 could be changed to 2.

Explanation:

The table is designed to make the concept of percentages more understandable. The table first allocates the total amount of 70 in terms of its "fifths," or 20% parts. Then it expresses these parts in the last row of the table, showing that 20% of 70 is 14 and all the five parts sum up to 70 again.

Now, Mikel is supposed to express 40% of the amount. So she writes (incorrectly): 0.2 * 14. This statement needs to be changed to 2 * 14 (two times 14 = 28), to correspond to 2 times 20%, or 40% of 70.

This is reflected in the last (fourth) option "The 0.2 in the expression could be changed to 2."

Option #3 is incorrect because changing 14 to 70, will result in an incorrect number (2.8).

Options 1 and 2 are similarly incorrect (as can be easily verified)

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Como yo puedo resolver todo esto

Trava [24]

Answer:

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Step-by-step explanation:

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3 years ago

Simplify. 3√-28 A 2i√7 B 12i√7 C 61√7 D -6i√7

netineya [11]

Answer:

Step-by-step explanation:

We want to simplify the expression:

$\displaystyle 3 \sqrt{-28}$

Rewrite:

$\displaystyle = 3 \sqrt{ 4\cdot 7 \cdot -1}$

Rewrite:

$\displaystyle = 3 \cdot \sqrt{4} \cdot \sqrt{7} \cdot \sqrt{-1}$

Simplify. Let i = √(-1). Hence:

$\displaystyle = 3 \cdot \left(2\right) \cdot \left(i\right) \cdot \sqrt{7}$

Multiply:

$\displaystyle = 6i\sqrt{7}$

In conclusion, our answer is C.

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3 years ago

GIVEN BRAINLIEST, 5 STARS, + THANKS

Olin [163]

Answer:

Option B. Side YZ is the same length as side Y'X'.

Step-by-step explanation:

At first the image is for the given question

The true graph is the attached figure.

As shown at the attached figure.

XYZ is reflected across the y-axis and then translated down 6 units to form X'Y'Z'.

So, X' is the image of point X

Y' is the image of point Y

Z' is the image of point Z

And ΔXYZ ≅ ΔX'YΔ'Z'

And the corresponding length are congruent.

We will check the options:

A. X has the same measure as X'. ⇒ True

B. Side YZ is the same length as side Y'X'. ⇒ Wrong

Because YZ will be translated to Y'Z'

C. Z has the same measure as Z'. ⇒ True

D. Side XZ is the same length as side X'Z'. ⇒ True

So, The answer is option B. Side YZ is the same length as side Y'X'.

6 0

4 years ago

Help im being timed!!!!! What is the area of the shaded region?

Goshia [24]

Answer:

5.86cm^2

Step-by-step explanation:

area of square - area of circle

3x3 - 3.1416x1^2 (area of circle = pi times radius squared)

9 - 3.1416

=5.8584 cm^2

3 0

4 years ago

Solve for x: 0.4x - 3 = 1.4

vlabodo [156]

Answer: x = 11

Step-by-step explanation:

First, add 3 to both sides

0.4x - 3 = 1.4

+3 +3

0.4x = 4.4

Then, divide each side by 0.4 to isolate x

x = 11

6 0

3 years ago