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Alex Ar [27]
3 years ago
7

Consider these three numbers written in scientific notation: 6.5 × 103, 5.5 × 105, and 1.1×103. Which number is the greatest, an

d by how many times is it greater than the smallest number?
A.The greatest number is 5.5 × 105. It is 5 times greater than the smallest number.

B.The greatest number is 6.5 × 103. It is 50 times greater than the smallest number.

C.The greatest number is 5.5 × 105. It is 500 times greater than the smallest number.

D.The greatest number is 6.5 × 103. It is 5,000 times greater than the smallest number.

E.The greatest number is 5.5 × 105. It is 5,000 times greater than the smallest number.

NEED AWNSER
Mathematics
2 answers:
Tasya [4]3 years ago
6 0
Assuming 6.5×10^3    5.5×10^5    1.1×10^3
are in scientific notation.
6500
550000
1100

are the choices without scientific notation.
so by looking at this you can assume (E) is the right answer

(E) <span>The greatest number is 5.5 × 105. It is 5,000 times greater than the smallest number.</span>
jarptica [38.1K]3 years ago
4 0

Answer:

Option C. is the answer.

Step-by-step explanation:

There are three terms written in scientific notation

6.5 × 10³, 5.5 × 10^{5}  and 1.1 × 10³

Now we can rewrite the numbers as

6,500, 550,000 and 1,100

Greatest number is 550,000 and smallest number is 1,100

and the ratio of greatest and smallest numbers is \frac{550000}{1100} = 500

Therefore, greatest number 5.5 × 10^{5} is 500 times of the smallest number.

Option C. is the answer.

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A rhombus ABCD has AB = 10 and m∠A = 60°. Find the lengths of the diagonals of ABCD.
melisa1 [442]
Three important properties of the diagonals of a rhombus that we need for this problem are:
1. the diagonals of a rhombus bisect each other
2. the diagonals form two perpendicular lines
3. the diagonals bisect the angles of the rhombus

First, we can let O be the point where the two diagonals intersect (as shown in the attached image). Using the properties listed above, we can conclude that ∠AOB is equal to 90° and ∠BAO = 60/2 = 30°. 

Since a triangle's interior angles have a sum of 180°, then we have ∠ABO = 180 - 90 - 30 = 60°. This shows that the ΔAOB is a 30-60-90 triangle.

For a 30-60-90 triangle, the ratio of the sides facing the corresponding anges is 1:√3:2. So, since we know that AB = 10, we can compute for the rest of the sides.

\overline{OB}:\overline{AB} = 1:2
\overline {OB}:10 = 1:2
\overline{OB} = \frac{1}{2}(10) = 5

Similarly, we have

\overline{AO}:\overline{AB} = \sqrt{3}:2
\overline {AO}:10 = \sqrt{3}:2
\overline{AO} = \frac{\sqrt{3}}{2}(10) = 5\sqrt{3}

Now, to find the lengths of the diagonals, 

\overline{AD} = 2(\overline{AO}) = 10\sqrt{3}
\overline{BC} = 2(\overline{OB}) = 10

So, the lengths of the diagonals are 10 and 10√3.

Answer: 10 and 10√3 units

8 0
3 years ago
Just need the explain your answer part. Can anyone help seventh grade math please DESPRATE
Dima020 [189]

9514 1404 393

Answer:

  140, 35, 260/35, 7.43, 8

Step-by-step explanation:

The last section is just a summary of the preceding sections, a short description of the problem and how you worked it.

She sells the jackets for 140% of $25, or $35. 260/35 = 7.43 She can only sell a whole number of jackets, so she needs to sell 8.

8 0
3 years ago
A fixed cost: Multiple Choice Requires the future outlay of cash and is relevant for future decision making. Does not change wit
Charra [1.4K]

Answer:

A fixed cost: Does not change with changes in the volume of activity within the relevant range

Step-by-step explanation:

Fixed Cost:

In economics, a fixed cost in a specified period of time does not change with respect to an increase or decrease in the production of goods or services. In contrast, the variable cost changes in proportion to changes in production of goods or services.

Examples of Fixed Cost:

Salaries, Rents, insurance payments, taxes, some utilities etc

7 0
4 years ago
Read 2 more answers
What sign of a null hypothesis must always include?
IrinaVladis [17]

Answer:

Option d - Equality

Step-by-step explanation:

To find : What sign of a null hypothesis must always include?

Solution :

The Null hypothesis is defined as a statement about the population that either is believed to be true or is used to put forth an argument unless it can be shown to be incorrect beyond a reasonable doubt.

The Null hypothesis represent by H_o

H_o always has a symbol with an equal in it.

Therefore, Option d is correct.

Equality sign of a null hypothesis must always include.

5 0
3 years ago
How do I find X in this problem
Alona [7]

Answer: x = 16°

Step-by-step explanation:

  • This is a right triangle, which means all angles add up to 180°.
  • One of the angle is already determined to be 90°, that means the sum of the other two angles must also be 90° in order to meet a total of 180°.

This means (x+26)° + 3x° = 90°.

Solve for x:

x + 26 + 3x = 90

x + 3x = 90 - 26

4x = 64

x = 64 ÷ 4 = 16°

7 0
3 years ago
Read 2 more answers
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