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Roman55 [17]
1 year ago
14

Which answer choice shows 4 + 0.3 + 0.09 written in standard form?A.43.9B.4.39C.0.439D.0.0439

Mathematics
1 answer:
Oliga [24]1 year ago
5 0

Place values:

As each is in a different place value, when we add them neither will affect the other, meaning:

4+0.3+0.09=4.39

Answer: B 4.39

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Solve for the value of X in 9^x+4(3^x+1)+27=0​
worty [1.4K]

Answer:

No solutions

Step-by-step explanation:

9^x + 4(3^x + 1) + 27 = 0\\3^{2x} + 4 \cdot 3^x + 31 = 0

Substitute 3^x with t and we get.

t^2 + 4t + 31 = 0\\\triangle = 16 - 4 \cdot 31 = -108 < 0 => t_{12} \notin R => x \notin R

3 0
4 years ago
Given: is a diameter<br> m 1 = 100°<br> m BC= 30°<br><br> m AD=<br><br> 50<br> 80<br> 100
olganol [36]

Answer:

100

Step-by-step explanation:

1=ad=100

and I need more characters so don't mind me.

8 0
4 years ago
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Seth’s father is thinking of buying his son a six-month movie pass for $40. With the pass, matinees cost $1.00. If matinees are
Ymorist [56]

Answer:

In order for it to benefit his father to buy the pass Seth have to attend the movies for 11 times.

Step-by-step explanation:

Given:

Cost of movie pass = $40

Cost per matinees with pass = $1.00

Cost per matinees without pass = $3.50

To Find:

Number of times must Seth attend in order for it to benefit his father to buy the pass = ?

Solution:

Let x be the number of times he wants to visit

To profit his father

The number of visits without pass =  the number of visits with passin the cost  of $3.50

Then, without pass if he visits for x times then the cost will be  = 3.50x

Also with pass, the number of times he can visit the pass  =  \frac{40}{3.50}

then

\frac{350 x}{3.50} = \frac{40}{3.50}

3.50x = 40

x = \frac{40}{3.50}

x =  11.42

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3 0
4 years ago
4) Given the following set of data, what is the
Helen [10]

Answer:

x = 11

Step-by-step explanation:

Median = The middle value of the set

There are 8 data values in the data set. You can split it up by 2 in order to get 4 and 4. There are two middle numbers that make up the median

3 4 7 9 x 12 14 18

We know that in order to find the median, we have to divide the two numbers by 2. If the median is 10, 10 by 2 equals 20. 9 plus 11 equals 20,

3 4 7 9 11 12 14 18

x = 11

5 0
4 years ago
21. Reason When you multiply any number
Anettt [7]

Answer:

Because multiplying a number by one will just give you the same number over and over again

Step-by-step explanation:

Example: 1 x 56 = 56

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