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3 years ago

Plz can u answer the questions I have attached

Mathematics

1 answer:

vodomira [7]3 years ago

4 0

Answer:

For the first question it is 2.

2 x 2 = 4

5 x 2 = 10

4 + 10 - 14 = 0

The second question is -2

-2 x -2 = 4

5 x -2 = -10

4 + -10 + 6 = 0

Hope this helps

Step-by-step explanation:

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What is the rate of travel 1200 miles in 30 hours

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Answer:

Step-by-step explanation:

1200/30 = 40

it should be the answer if the per is between 1200 miles and 30 hours

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3 years ago

Read 2 more answers

Andrea's change purse contains 8 quarters 9 dimes and 8 nickels. If she shows two coins randomly without replacing them in her p

GarryVolchara [31]

there are 9 dimes in a total of 8+9+8=25 coins

The probability to choose one first is 9/25

Now there are 8 dimes in 24 coins and the probability to get a second dime is 8/24=1/3

The solution will be: (9/25)x(1/3)=3/25 then the answer is "B"

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3 years ago

What is the difference of the lengths of BD and CE ? Use the value (pie) = 3.14, and round the answer to two decimal places.

lys-0071 [83]

Answer:

1.57 units

Step-by-step explanation:

The formula for arc length is given as:

Arc Length = $\frac{\theta}{360}*2\pi r$

Now,

Arc length of BD = $\frac{45}{360}*2(3.14)(6)=4.71$

Arc length of CE = $\frac{45}{360}*2(3.14)(8)=6.28$

The difference in CE and BD is $6.28-4.71=1.57$

Second answer choice is right.

***** CE falls in the larger circle whose radius is AB + BC = 6+2=8

BD falls in the smaller circle whose radius is AB=6

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3 years ago

How can you use factoring to solve these three problems?

torisob [31]

You're meant to make one side of the equation equal 0.
For example, the first problem is $2k x^{2}$ + 9k = -7
You'd add 7 to both sides, leaving you with $2k x^{2}$ + 9k +7 =0
And I assume you know how to factor??

3 0

3 years ago

Please help any one please im really counfuse

Anna71 [15]

In Any Way for the first problem the answer is that is you shade in 1 sq.unit.

3 0

3 years ago