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3 years ago

Answer this question

Mathematics

1 answer:

soldi70 [24.7K]3 years ago

4 0

Answer:

u hv to shade 3 rectangles

Step-by-step explanation:

$\frac{1.2}{4} = 0.3 \\ \\ 0.3 = \frac{3}{10}$

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Which expression is equivalent to 2 to the 2nd power times 2 divided by 2 to the 4th power

Ivan

Answer:

The choice B.

${2}^{ - 1}$

Step-by-step explanation:

${2}^{2} \times \frac{2}{ {2}^{4} } = \frac{2}{ {2}^{2} } = \frac{1}{2} = {2}^{ - 1}$

I hope I helped you^_^

3 0

3 years ago

In your own words, explain the problem of correlation vs. causation. Why are causation and correlation very different?

leonid [27]

Answer:

Step-by-step explanation:

Correlation means that two or more events happen together. They are related to one another by being caused by the same thing.

Causation has a definite order. The first event has some cause that is comes before the second event. One event caused the other.

7 0

3 years ago

My father is 4 times old as me. after 5 years my father will be 3 times old how old is my father now

koban [17]

Answer:

Step-by-step explanation:

6 0

2 years ago

69 points!!!

Amiraneli [1.4K]

Answer:

C) The solution for the given system of equations are A(0,-5) and B(-4,3)

Step-by-step explanation:

The given system of equation are : $x^{2} + y^{2} = 25\\2x + y = -5$

from equation 2, we get y = -5 - 2x .

Put the above value of y in the equation (1).

We get: $x^{2} + y^{2} = 25 \implies x^{2} + (-5-2x)^{2} = 25$

By ALGEBRAIC IDENTITY:

$(a+b)^{2} = a^{2} + b^{2} + 2ab\\ (-5-2x)^{2} = (-5)^{2} + (-2x)^{2} + 2(-5)(-2x)$

or, $x^{2} + (-5-2x)^{2} = 25 \implies x^{2} + (25 + 4x^{2} + 20x) = 25$

or, $5x^{2} + 20x = 0 \implies x(5x + 20) = 0$

⇒ x = 0 or, x = -20/5 = -4

So, the possible values for x are: x = 0 or x = -4

If x = 0, y = -5-2x = -5-2(0) = -5

and if x = -4, y = -5 -2(-4) = -5 + 8 = 3

Hence, the solution for the given system of equations are A(0,-5) and B(-4,3)

8 0

3 years ago

. If mZJ= (7x + 13)", mZK = (83 - 2x), and

OLga [1]

Answer:

m∠J = 76°
m∠K = 65°

Step-by-step explanation:

The sum of angle measures is ...

(7x +13)° +(83 -2x)° = 141°

5x +96 = 141 . . . . . collect terms, divide by °

5x = 45 . . . . . . . . . subtract 96

x = 9 . . . . . . . . . . . divide by 5

7x +13 = 7·9 +13 = 76 . . . . . find m∠J

m∠J = 76°

m∠K = 141° -76°

m∠K = 65°

8 0

3 years ago