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3 years ago

Create a real life problem using 27×30. Solve it and explain how to use place value and associative property to solve it.

Mathematics

1 answer:

Dmitriy789 [7]3 years ago

3 0

Answer:

Jill had 27 marbles. Ryan had 30 times the number of marbles Jill had. How many marbles did Ryan have?

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The length of the path of the first swing of the bob of a pendulum is 0.6 in. Each

ycow [4]

Answer:

0.3188646

Step-by-step explanation:

an=a×r^n-1

a6=0.6×0.9^5

=0.354294

1st swing: 0.6

2nd swing: 0.9×0.6=0.54

3rd swing: 0.9×0.54= 0.486

4th 0.9×0.486= 0.4374

5th 0.9×0.4374= 0.39366

6th 0.9×0.39366=0.354294

Brainliest please~

8 0

2 years ago

What is the tangent of 0?

algol [13]

Answer: Tis 0

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

In the figure, m∠B = m∠C and ∠D is a right angle. cos B =

Rasek [7]

Answer: The correct option is (a), i.e., cos B= sin A.

Explanation:

It is given that the ∠B = ∠C and ∠D is a right angle.

Since two corresponding angles of both triangles are same, so by angel sum property three angles are also equal. Therefore by AAA rule both triangles are similar.

It is given that,

$\angle B=\angle C$

$\cos B=\cos C$

Using angle sum property angle C is written as,

$\cos B=\cos (180-\angle D-\angle A)$

$\cos B=\cos (180-90-\angle A)$

$\cos B=\cos (90-\angle A)$

By using quadrant concepts.

$\cos B=\sin A$

Therefore option A is correct.

5 0

3 years ago

Read 2 more answers

A rectangle is dilated by a scale factor of y to create a new rectangle. The area of the new rectangle is y2 times the area of t

slamgirl [31]

Answer: True

Step-by-step explanation:

Suppose the length and width of the original rectangle is L and W

After dilation by a factor of y, it becomes yL and yW

Area of the original rectangle $A_1=L\times W$

The area of the dilated rectangle is $A_2=yL\times yW=y^2LW$

we can see that

$\Rightarrow A_2=y^2A_1$

4 0

2 years ago

If ex + e*-1= 2, then x =..

lianna [129]

<em>Note: Your equation seems a little unclear. But, I am assuming that your equation is:</em>

$e^x\:+\:e^{-1}=\:2$

<em>Because my solution would still clear your concept about this topic, no matter what the question is.</em>

Answer:

Please check the explanation.

Step-by-step explanation:

Given the equation

$e^x\:+\:e^{-1}=\:2$

subtract $e^{-1}$ from both sides

$e^x+e^{-1}-e^{-1}=2-e^{-1}$

$e^x=2-\frac{1}{e}$

$\ln \left(e^x\right)\:=\ln \:\left(2-\frac{1}{e}\right)$

$\:x\cdot ln\left(e\right)=\ln \:\:\left(2-\frac{1}{e}\right)$

$\:x\cdot 1=\ln \:\left(2-\frac{1}{e}\right)$ ∵ $\:\:\ln \left(e\right)=1$

$x=\ln \:\left(2-\frac{1}{e}\right)$

$x=0.5$

8 0

2 years ago