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asambeis [7]
3 years ago
7

Write each number in scientific notation 1 27.5

Mathematics
2 answers:
babymother [125]3 years ago
8 0
1 = 1 x 10 exponent 0
27.5 = 2.75 x 10 exponent 1
inysia [295]3 years ago
4 0

The positive exponent of 10 is the number of places you need to move the decimal point left to get the number in the form d.f...f × 10ⁿ where d is some non-zero digit, and the digits f are those necessary to express the full precision of the number. Moving the decimal point to the right will produce negative values of n.

1 = 1 × 10⁰

27.5 = 2.75 × 10¹

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Which of the following equation(s) has/have slope zero?
Mnenie [13.5K]

Answer:

b, only b

y = -3 has zero slope.

Step-by-step explanation:

Only a horizontal line has zero slope. A horizontal line's equation is given in the form: "y equals a number" So y=-3 is horizontal with zero slope.

Vertical lines have undefined slope. This is not the same as zero. Vertical lines have an equation in the form x= anumber. Above in the answer choices, choice a and d are both vertical with undefined slope and are not the correct answer. Choice c has slope 5, because that is the number beside the x in the form y=mx+b where m is the slope. So choice c is also not the answer.

Only choice b has zero slope.

5 0
2 years ago
A jacket that is regularly sold for $49.95 is on sale for 25% off. What is the sale price of the jacket?
Gnoma [55]

First, find 25% of 49.95. Turn 25% into a decimal by dividing by 100.

25% ⇒ 0.25

Now, multiply 0.25 by 49.95.

0.25 × 49.95 = 12.46

25% of 49.95 is 12.46, so subtract 12.46 from 49.95.

49.95 - 12.46 = 37.49

<h2>Answer:</h2>

<u>The discounted price of the jacket is </u><u>$37.49</u><u>.</u>

Now find 8% of 37.49.

8% ⇒ 0.08

Multiply 0.08 by 37.49.

0.08 × 37.49 = 2.99

<h2>Answer:</h2>

<u>The tax is </u><u>$2.99</u><u>.</u>

To find the full price, add 37.49 and 2.99 together.

37.49 + 2.99 = 40.48

<h2>Answer:</h2>

<u>The final cost is </u><u>$40.48</u><u>.</u>

4 0
3 years ago
Solve 4(10x - 2) = 192​
MAXImum [283]

Answer:

5

Step-by-step explanation:

4*10x=40x

4*2=8

40x-8=192

40x=192+8

=200

X= 200/40

=5

5 0
3 years ago
Find the least common denominator of 11/20 and 9/70
Ierofanga [76]

Answer:

140

Step-by-step explanation:

3 0
1 year ago
NEED HELP ASAP
Ksenya-84 [330]

Answer:

172.5 mg/dl

Step-by-step explanation:

Given the equation y= -2.5x + 222.5, where 'x' is the time spent exercising in minutes. If we want to know the amount of cholesteron for a person exercising 20 minutes a day, we just have to subtitute 20 into the equation for x.

So we have: y= -2x + 222.5 → y= -2.5(20 minutes) + 222.5 = 172.5 mg/dl

5 0
2 years ago
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