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siniylev [52]
4 years ago
11

Is this right I'm practicing multiplying decimals by 10, 100, or 1,000

Mathematics
1 answer:
Leokris [45]4 years ago
8 0
All are correct except the bottom, it would just be 4.23 since there are no zeroes, any number times 1 is itself
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If A = 3r^2h^2, and (rh) increases by 100%, then the new A is how many times greater than the old A? PLEASE HELP ME!!! (Specify
Maslowich

Answer: the answer is 3

Step-by-step explanation:

An increase of 100% in the value of (rh) means the value doubles. When that doubled value is squared, the new area is 4 times the old area.The question asks how many times GREATER the new A is than the old A. 4 times AS LARGE AS is a 300% INCREASE, which is 3 TIMES LARGER THAN.So the grammatically correct answer is 3 

3 0
2 years ago
The explicit rule for the arithmetic sequence shown in the graph is a↓n=9.5+2(n-1)
Virty [35]

Answer:

True.

Step-by-step explanation:

The explicit form for an arithmetic sequence is:

a_n=a_1+d(n-1)

where a_1 is the first term and d is the common difference.

The common difference here is 2 because the y's are going up by 2 while the x's are going up by 1.

Yes, the common difference is the slope.

So we have d=2.

The first term is 9.5 because that is what happens when x=1.

x is n.

y is a_n.

So the answer is true.

----

You can also verify by plugging in numbers for n and see if you get the outputs mentioned in the pairs given:

Let n=1:

a_1=9.5+2(1-1)

a_1=9.5+2(0)

a_1=9.5+0

a_1=9.5

Let n=2:

a_2=9.5+2(2-1)

a_2=9.5+2(1)

a_2=9.5+2

a_2=11.5

Let n=3:

a_3=9.5+2(3-1)

a_3=9.5+2(2)

a_3=9.5+4

a_3=13.5

Let n=4:

a_4=9.5+2(4-1)

a_4=9.5+2(3)

a_4=9.5+6

a_4=15.5

Let n=5:

a_5=9.5+2(5-1)

a_5=9.5+2(4)

a_5=9.5+8

a_5=17.5

Let n=6:

a_6=9.5+2(6-1)

a_6=9.5+2(5)

a_6=9.5+10

a_6=19.5

We have confirmed that we get all 6 of the mentioned points using the equation they gave.

5 0
3 years ago
HELP PLEASE....I REALLY DONT KNOW WHAT THIS WANTS FROM ME
Mkey [24]

Step-by-step explanation:

Area of the circle=

\frac{\pi {d}^{2} }{4}

3.14•(17)²/4

=226.865in²

Area of the rectangle=length•width

=(8•15)in²

=120in²

Area of the shaded portion=Area of the circle-Area of a rectangle

=(226.865-120)in²

=106.865in²

=106.87in² to the nearest hundredth

6 0
3 years ago
Martha earns $16.50 an hour for a regular 40 hour week. He overtime payo is 1.5 times her regular hourly rate. This past week Ma
Radda [10]

Answer:

12

Step-by-step explanation:

Regular work week is 40 hours; at $16.50 per hour, that comes to $660.

Subtracting $660 from the toal $948.75 yields $288.75, which represents her pay at the overtime rate of (1.5)($16.50/hr), or $24.75/hour

Dividing $288.75 by this overtime rate of $24.75/hr yields 11.666 ...

We conclude that she worked approximately 12 hours overtime to end up

with $948.75 total pay.

3 0
3 years ago
Help me please I suck at math its my weakness<br>​
34kurt

Answer:

b

Step-by-step explanation:

4 0
3 years ago
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