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1 year ago

What is the decimal equivalent of each rational number a.7/20 b.-23/20 c.1/18 d.-60/22

Mathematics

1 answer:

Eva8 [605]1 year ago

4 0

Answer:

a. 0.35

b. -1.15

c. 0.056

d. -2.727

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When debby's 3ds is fully charged it last for 8 hours. if she only charged it 3/5 full how long did it last her?

Luba_88 [7]

8*3/5=4.8 hours

Hope that helps

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2 years ago

Read 2 more answers

Please help me with these two math problems that I do not quite understand. This is urgent!

g100num [7]

Answer:

1) $a_{n}=a_{1}+(n-1)d\Rightarrow a_{n}=-1-2(n-1)\\a_{2}=-1-2(2-1)\Rightarrow a_{2}=-3\\a_{3}=-1-2(3-1)\Rightarrow a_{3}=-5\\(...)\\a_{10}=-1-2(10-1)=-19$

2) $a_{10}=4+8(10-1)\Rightarrow a_{10}=76$

Step-by-step explanation:

1) To write an Arithmetic Sequence, as an Explicit Term, is to write a general formula to find any term for this sequence following this pattern:

$a_{n}=a_{1}+d(n-1)\Rightarrow \left\{\begin{matrix}a_{n}=n^{th}\: term\\a_1=1st \: term \\d=\: difference\\n=n^{th}\, term\end{matrix}\right.$

<em>"Write an explicit formula for each explicit formula A(n)=-1+(n-1)(-2)"</em>

This isn't quite clear. So, assuming you meant

Write an explicit formula for each term of this sequence A(n)=-1+(n-1)(-2)

As this A(n)=-1+(n-1)(-2) is already an Explicit Formula, since it is given the first term $a_{1}=-1$ the common difference $d=-2$ let's find some terms of this Sequence through this Explicit Formula:

$a_{n}=a_{1}+(n-1)d\Rightarrow a_{n}=-1-2(n-1)\\a_{2}=-1-2(2-1)\Rightarrow a_{2}=-3\\a_{3}=-1-2(3-1)\Rightarrow a_{3}=-5\\(...)\\a_{10}=-1-2(10-1)=-19$

2) $(4,12,20,28, ..)$ In this Arithmetic Sequence the common difference is 8, the first term value is 4.

Then, just plug in the first term and the common difference into the explicit formula:

$a_{10}=4+8(10-1)\Rightarrow a_{10}=76$

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2 years ago

Use the distributive property to write an equivalent expression.

wlad13 [49]

Answer:

14x+35y-35

Step-by-step explanation:

distribute the 7 to each term

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2 years ago

Draw array for each profuct to find the partial products and product dor 18x4=

romanna [79]

18×4=72 :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) :) your wecome

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2 years ago

At 10a.m the temperature was 71 degreesF. At 3 P.M the temperature was 86degrees F. Find the value of the slopes and explain wha

madreJ [45]

Values of slope = (86-71) / (3pm - 10 am) = 15 / 5 = 3

This value of the slope gives the average rise in temperature per hour.

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2 years ago