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3 years ago

Write an addition expression and a subtraction expression each with a value of 2.4 x 10^-3

1 answer:

8 0

Well,

You can just add up the numbers to get 2.4.

Example:
$1.0*10^{-3}+1.4*10^{-3}=10^{-3}(1.0+1.4)=2.4*10^{-3}$

In the same way you can make a subtraction problem.

Example:
$5*10^{-3}-2.6*10^{-3}=10^{-3}(5-2.6)=2.4*10^{-3}$

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There are 8 members on the student council. A committee consisting of 2 members is to be made. How many different committees are

wlad13 [49]

Answer

28 committees

Explanation:

The total number of members = 8

We want to make a committee of 2 members

We will be applying the combination concept

$\begin{gathered} \text{let n = 8 and r = 2} \\ ^nC_r\text{ = }\frac{n!}{(n\text{ - r)!r!}} \\ ^8C_2\text{ = }\frac{8!}{(8\text{ - 2)!2!}} \\ ^8C_2\text{ = }\frac{8!}{6!2!} \\ ^{8_2}C\text{ = }\frac{8\text{ x 7 x 6 x 5 x 4 x 3 x 2 x 1}}{6\text{ x 5 x 4 x 3 x 2 x 1! 2 x 1}} \\ ^{8_{}}C_2\text{ = }\frac{8\cdot\text{ 7}}{2} \\ ^{8_{}}C_2\text{ = 28 committees} \end{gathered}$

Therefore, 28 committees can be formed

8 0

1 year ago

Which statement is true?

steposvetlana [31]

A dilation is a function because the scale factor is always greater than 1.

3 0

3 years ago

Read 2 more answers

Solve and reduce to simplest form 1x3/8

grandymaker [24]

Answer:

The answer I got was 3/8. The alternate term for this would be 0.375.

Step-by-step explanation:

Any expression multiplied by 1 remains the same.

5 0

3 years ago

4. An isosceles triangle has sides that measure 7cm and 15cm. Find the third side of the

Advocard [28]

Answer:

Third side is 15cm. Perimeter is 37cm.

Step-by-step explanation:

In a triangle sum of two sides is always greater than third side. Two sides of a isosceles triangle are equal.

So if the third side is 7cm

7+7=14cm which is less than 15 cm.

hence third side is 15 cm as

15+15=30cm which is greater than 7cm

15+7=22cm which is greater than 12cm

then

perimeter=15+7+15=37cm

8 0

3 years ago

Which event is more likely: rolling a standard number cube and getting an even number, or flipping a coin and having it land hea

marishachu [46]

Answer: The probability would be the same

Step-by-step explanation:

The probability of flipping a coin and it landing heads-up would be 1/2, since there are 2 possible outcomes and you only want 1 to occur, while the probability of rolling an even number on a standard die would be 3/6, since there are 6 outcomes and 3 favorable ones, reducing to 1/2.

7 0

3 years ago