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kramer
3 years ago
10

Need help, this is 7th grade, will be 50 points for work shown

Mathematics
1 answer:
Vikki [24]3 years ago
3 0

Answer:

.111      11.1%

2/5        2:5

12.5%        1:8

Step-by-step explanation:

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$19.99, $8.99, $35.99, $49.99, $49.99, $39.99, $99.99, $79.99, $35.99, $19.99, $49.99, $29.99, $49.99, $54.99, $35.99, $49.99, $
alexgriva [62]
$34.99,, the middle numbers are $19.99 and $49.99, add them both and divide by 2 = $34.99
8 0
3 years ago
Use the properties of exponents to rewrite y=3e^-0.6t in the form y=a(1+r)^t or y=a(1-r)^t. Round the value or r to the nearest
vesna_86 [32]

Answer:

y=3(1-0.451)^t

The value of r is 0.451

The percentage decrease is about 45.1%

Step-by-step explanation:

The given exponential function is y=3e^{-0.6t}

Using the exponent rule, (x)^{ab}=(x^a)^b

y=3(e^{-0.6})^t

Now the value of e^{-0.6}=0.5488

Thus, we can rewrite the function as

y=3(0.5488)^t

Therefore, the function in form y=a(1-r)^t

y=3(1-0.451)^t

The value of r is 0.451

The percentage decrease is about 0.451 ×100 = 45.1%

8 0
4 years ago
The digits 1,2,3,4,5,6,7 and 8 are arranged randomly to form a three-digit number find the probability that the number is even a
Korvikt [17]
So each digits can only be selected once.

Let's start counting desired outcome.

Hundred position need to be at least 8. There is only one possible digits. So we will go with 8 and then there are 7 remaining digits.

One position can only be 2,4,6. because we need number to be even. So that's 3 possible digits. We will take one. 6 digits remaining.

Ten position can be anything so that would be 6 possible digits.

So the number of desired outcomes is 3·6 = 18.

Now count all outcomes.

Hundred, ten, and one position can get any digits

So that's 8·7·6 = 336

So the probability would be 18 / 336 = 3 / 56 ≈ 0.0536

Hope this helps.
4 0
3 years ago
Read 2 more answers
A) Create a Venn Diagram that shows the relationship between A, B, and the Universal Set.
expeople1 [14]

Answer:

{a universal set is a set which contains all objects, including itself}

Step-by-step explanation:

a) you will create two circle, crossing over each other, and shade both the "A" the "B" and the middle space.

b) (AUB) means the same thing as universal set, but its called union, infact if you draw this out in Venn Diagrams this will be the exact same as answer (a).

c) A n B : mean A 'intersection' with B, so here you will only shade the area where both circles meet.

d) i am not sure of this one, sorry

8 0
3 years ago
-2.8f + 0.7f - 14 - 4
den301095 [7]

Answer:

Step-by-step explanation:

-2.8f + 0.7f - 14 - 4

- 2.1f - 18

3 0
3 years ago
Read 2 more answers
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