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astraxan [27]
4 years ago
14

My cousin needs help and I forgot how to do it so can someone help please?

Mathematics
1 answer:
alexira [117]4 years ago
6 0
We cannot solve this without the information from the previous problems
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-2.4(3)= please show work thank you
Inessa05 [86]
The answer is -7.20 click on file for more details.

4 0
3 years ago
Read 2 more answers
Solve 15 + a = 31 for a
pentagon [3]

Answer:

a = 16

Step-by-step explanation:

To solve your question all you have to do is subtract 15 on both sides so,

15 - 15 + a = 31 - 15

Which will give you,

15 - 15 = 0

31 - 15 = 16

So,

a = 16

Hope this helps!!

5 0
3 years ago
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Which of the following are solutions to the equation below?
barxatty [35]

Answer:

x = 3 ± sqrt(11)

Step-by-step explanation:

x^2 - 6x + 9 = 11

Recognizing  that this is a perfect square trinomial

(x-3) ^2 =11

Taking the square root of each side

sqrt((x-3) ^2) = ± sqrt(11)

x-3 =± sqrt(11)

Add 3 to each side

x = 3 ± sqrt(11)

5 0
4 years ago
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At the city museum, child admission is $6.30 and adult admission is $9.60. On Sunday, twice as many adult tickets as child ticke
IRINA_888 [86]

Answer: 20 child tickets were sold that day.

Step-by-step explanation:

Let x represent the number of child tickets that were sold that day.

Let y represent the number of adult tickets that were sold that day.

On Sunday, twice as many adult tickets as child tickets were sold. It means that

y = 2x

At the city museum, child admission is $6.30 and adult admission is $9.60. The total sales for that day was $510.00. It means that

6.3x + 9.6y = 510- - - - - - - - - - - -1

Substituting y = 2x into equation 1, it becomes

6.3x + 9.6 × 2x = 510

6.3x + 19.2x = 510

25.5x = 510

x = 510/25.5

x = 20

y = 2x = 2 × 20

y = 40

7 0
3 years ago
WILL MARK BRAINLIEST!
prisoha [69]

I think its D. because they get too used to the cells, so their DNA evolves to survive and resist the cells


7 0
3 years ago
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