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sweet [91]
3 years ago
8

275.9 × 10−4 in standard form

Mathematics
2 answers:
Advocard [28]3 years ago
5 0

Answer: 2.759 x 10^-2

Step-by-step explanation: Standard forms are ways of writing down very large or very small numbers in easy and short forms. The index are positive and are gotten by the number of movements of the decimal point to the left. For example 10² = 100, so 2 × 10² = 200.

2.759 x 10⁴ = 27590

Small numbers (less than zero) can also be represented in standard forms but instead we have negative indexes corresponding to the number of decimal shifts to the right. For example 0.0023 would be 2.3 x 10^-4

The simple rule for when writing numbers in standard form is this: represent the given figure as a number between 1 and 10, then write × 10 (to the power of number of decimal shifts to the right or left)

The answer to the question above is 2.759 x 10^-2

This is because the original figure given would be 0.02759, and the required number of decimal shifts is two places to the right. Since its a figure less than zero, we add the negative sign to the index.

horrorfan [7]3 years ago
3 0

Answer:

0.02759

Step-by-step explanation:

The units digit of the mantissa goes in the number place with the place value given by the exponential multiplier. Here, that means the 5 goes in the ten-thousandths place.

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In Triangle BCD, BC=BD, and angle B =13x-35, angle C = 5x-19, angle D=2x+14. Find the measure of each angle
aleksandr82 [10.1K]

Answer:

B = 108

C = 36

D = 36

Step-by-step explanation:

Given

B =13x - 35

C = 5x - 19

D=2x+14

BC = BD

Required

Determine the measure of each angle

The angles in a triangle sum up t 180. i.e.

B + C + D = 180

Since BC = BD, then C = D

B + C + D = 180 can then be rewritten as:

B + C + C = 180

B + 2C = 180

Substitute values for B and C

13x - 35 + 2(5x - 19) = 180

Open Bracket

13x - 35 + 10x - 38 = 180

Collect Like Terms

13x + 10x = 180 + 38 + 35

23x= 253

Divide both sides by 23

x = 11

To get the measure of each angle, substitute 11 for x in the expressions of B, C and D

B =13x - 35

B = 13 * 11 - 35

B = 108

C = 5x - 19

C = 5 * 11 - 19

C = 36

D=2x+14

D = 2 * 11 + 14

D = 36

5 0
3 years ago
The algebraic expression for​ "the quotient of 77 and​ x" is
Illusion [34]
The correct answer is:

_______________________
 "  77 / x " ;  or;  "x ÷ 77" .

_________________________
In algebra, the former is preferred; that is:  " 77 / x " .
7 0
3 years ago
It says that I need to find x for the missing angle in the equation.
Anuta_ua [19.1K]

Answer:

Could you possible elaborate on the question more?

4 0
3 years ago
Each side of a triangle is nine inches long. find the perimeter
ella [17]

Answer:

27

Step-by-step explanation:

sorry if its wrong i just did 9×9×9 and got 27

5 0
3 years ago
What is the change in each termof the sequence? 5, -2, -9, -16, -23​
nordsb [41]

Answer:

-7

Step-by-step explanation:

To find the common difference, take the second term and subtract the first term

-2 - 5 = -7

Check by subtracting the second term from the third term

-9 - (-2) = -9+2 = -7

The common difference is -7

7 0
3 years ago
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