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3 years ago

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Mathematics

2 answers:

Jlenok [28]3 years ago

5 0

B. 7.5 is the correct answer

Studentka2010 [4]3 years ago

4 0

Answer:

B. 7.5

Step-by-step explanation:

The number 7.68 is between 7.5 and 8. Let's find which of those two numbers 7.68 is closer to. We can do this by subtracting 7.68 from each of those numbers:

8 - 7.68 = 0.32

7.5 - 7.68 = -0.18

7.68 is 0.32 away from 8, but it's only 0.18 away from 7.5. So, the nearest half is 7.5.

I hope this helps :)

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kenny6666 [7]

Answer and Explanation:

To find : Which number is in standard notation or scientific notation?

Solution :

Scientific notation is a special ways of writing the standard form of number.

Scientific notation make a big number into smaller way bye writing it into 10 to the power or using E.

Standard notation is like 12,47950585,89000.

Scientific notation is like $1.43\times 10^3$ , $1.43E10$

So, Now we examine the numbers,

A) $5.9E10$ is the Scientific notation.

B) $0.0000734$ is the Standard notation.

C) $2.66\times 10^{-3}$ is the Scientific notation.

D) $641,000,000,000$ is the Standard notation.

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3 years ago

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Lelechka [254]

Answer: <

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3 years ago

12 subtracted from a negative number is 16. Write as an equation

cupoosta [38]

Step-by-step explanation:

(-x)-12=16

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3 years ago

Homework due at 12:00 I Need Help

Leya [2.2K]

Answer:

k = - 7.5

Step-by-step explanation:

Slope "m" of a line through points

( $x_{1}$ , $y_{1}$ )

( $x_{2}$ , $y_{2}$ )

is m = $\frac{y_{2} -y_{1} }{x_{2} -x_{1} }$

Slopes of perpendicular lines are opposite reciprocal: $m_{1}$ $m_{2}$ = - 1

~~~~~~~~~~~~~~~

The slope of a line through points (0, 7) and (2, 10)

$m_{1}$ = $\frac{10-7}{2-0}$ = $\frac{3}{2}$

Slope of perpendicular line through points (3, 5) and (k, 12) is $m_{2}$ = $-\frac{2}{3}$

or $m_{2}$ = $\frac{12-5}{k-3}$

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3 years ago

If the measure of angle DCF = 34 and the measure of angle DEF = 90, find the measure of angle CDE.

spayn [35]

Answer:

118

Step-by-step explanation:

Triangle CDE contains angles CDE, DCR and DER

Angles DCR=17 and DER=45 because in a kite, the diagonal on the line of symmetry bisects the angles and 34-2=17 90/2=45

The angles in a triangle add up to 180 and 180-17-45=118, meaning angle DER=118

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3 years ago