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Roman55 [17]
2 years ago
13

I NEED ANSWERS AND WORK ON THESE 4 PLEASEE!!!!

Mathematics
2 answers:
defon2 years ago
5 0

Answer:

number 3

b=5.6

Step-by-step explanation:

shutvik [7]2 years ago
4 0

Answer:Ok so im in 5th grade and ik how to do this you should to Step-by-step explanation: b2-4b-16 6.2

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1. The exact value of cos60
Ksenya-84 [330]
E) none of the above
5 0
3 years ago
Yolanda is buying supplies for school.She buys n packages of pencils at 1.40 per package and m pads of paper at 1.20 each.what d
oksian1 [2.3K]
1.4n + 1.2m

1.4n.....the n represents the number of packs of pencils bought.....and each pack of pencils cost 1.4 (which is the same as 1.40)

1.2m...the m represents the number of pads of paper bought...and each pad of paper cost 1.2 (which is the same as 1.20)

the entire expression represents the total cost spent on buying n packs of pencils and m pads of paper
5 0
3 years ago
Find the sum of the following infinite sequence: 8, 2, .5, …
lubasha [3.4K]
Answer:
10.67

Explanation:
The given series is a geometric series:
8 , 2 , 0.5 , ...... etc

The general formula of the geometric sequence is:
a1 , a1*r , a1*r² , ......

Comparing the general form with the given, we would find that:
a1 = 8
a1 * r = 2
Therefore:
8*r = 2
r = 2/8 = 0.25

We can double check using another term as follows:
a1 = 8
a1*r² = 0.5
8r² = 0.5
r² = 0.5/8 = 0.0625
r = √0.0625 = 0.25

Now, we will get the sum of the sequence as follows:
S = \frac{a1}{1 - r} = \frac{8}{1 - 0.25} = 32/3 = 10.67

Hope this helps :)
3 0
3 years ago
Calculate the future value in five years of $8,000 received today if your investments pay future value a. 5 percent compounded a
zhannawk [14.2K]

The Future value is:

a) $10,210.25

b) $11,220.41

c) $12,308.99

d) $18,938.90

e) $44,835.28

What is future value?

The future value (FV) of any asset can be understood as an increase in its value at a fixed rate over a period of time. For a given principal sum P, rate of interest r, and time period t, the future value of an asset can be calculated as:

FV=P*(1+r) ^t

We can find future value as shown below:

P=$8,000

t=5 year

a) r=6%=0.06

FV=8000*(1+0.05) ^5

=8000*(1.0) ^5

=$10,210.25

b) r=7%=0.07

FV=8000*(1+0.07) ^5

=8000*(1.07) ^5

=$11,220.41

c) r=9%=0.09

FV=8000*(1+0.09) ^5

=$12,308.99

d) r=9% compounded semiannually

= 0.09

t=2*5=10

FV=8000*(1+0.09) ^10

=8000*(1.09) ^10

=$18,938.90

e) r=9 percent compounded quarterly

=0.09

t=5*4=20

FV=8000*(1+0.09) ^20

=8000*(1.09) ^20

=$44,835.28

Learn more about Future value here:

brainly.com/question/7463006

#SPJ2

3 0
1 year ago
I don’t understand this one can someone help me?
Talja [164]

Answer:

D

Step-by-step explanation:

First, simplify sqrt(18/30) into sqrt(3/5). This equals (sqrt(3))/(sqrt(5)) or (sqrt(15))/5. Now, multiply it by 8 to get \boxed{8\sqrt{15}\over5} or D.

7 0
3 years ago
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