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Serjik [45]
3 years ago
9

Please help with this question

Mathematics
1 answer:
Dahasolnce [82]3 years ago
8 0

Answer:

10X + 20 +5X +25 = 180

15x=180-45

X= 135/15

X=9

Please mark me brainliest and thank me and rate me. Sis.

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Need help on this math problem​
erik [133]

Answer:

-5, 18, \sqrt{13}

Step-by-step explanation:

We can solve the first equation, f of -3. The value of the function f is \frac{1+x^2}{x+1}, and plugging in -3 gets us \frac{1+9}{1-3}, this results in 10 divided by negative 2, which is negative 5.

Now, we must solve g of negative one third. The function g is defined as |9x-15|. Plugging in negative one third into the question gets us |9(-\frac{1}{3})-15|

9 times negative one third is -3, and -3 minus 15 is -18. The absolute value of -18 is 18.

Now, we must solve h of negative 2, and h is defined as \sqrt{-3-8x}. Plugging in negative 2, we have \sqrt{-3-8(-2)}. Negative 8 times negative 2 is positive 16, and 16 minus 3 is 13. The answer is the square root of 13

7 0
2 years ago
A truck travels on the highway at a speed of 72 miles per hour. What is the speed of the truck in feet per second
Dmitry_Shevchenko [17]
The answer is .02 per second
7 0
3 years ago
Read 2 more answers
Find the quotient.<br> 12^9/12^3<br><br> A) 1227<br><br> B) 1212<br><br> C)126<br><br> D) 123
salantis [7]

Answer:

A) 1227

Step-by-step explanation:

\frac{12^9}{12^3}=2985984

12^{3}=1728\\and 12^{9}=5159780352

4 0
3 years ago
What types of angle are 78 degrees and 144 degrees?
Alex17521 [72]
78- acute
144- obtuse

This is because anything less than 90 degrees is acute. Think of it as they are cute because they are tiny xD

=90 is right angel

And anything above 90 and below 360 is obtuse because it's fat xD
6 0
3 years ago
Read 2 more answers
The table below shows the number of tadpoles in a pond after a certain number of months.
aliya0001 [1]
<h3>Answer:   Choice D)  6 months to 10 months</h3>

===================================================

Explanation:

  • x = number of months
  • y = number of tadpoles

Highlight the rows that correspond to 6 months and 10 months.

This leads to the two points (6,330) and (10,460).

Apply the slope formula. This is because the slope is the average rate of change.

m = (y2-y1)/(x2-x1)

m = (460-330)/(10-6)

m = 130/4

m = 32.5

This is the average rate of change from month 6 to month 10.

Let A = 32.5 so we can compare it later.

---------------------------

Now let's focus on months 4 and 8

We get the two points (4, 300) and (8, 410)

Use the slope formula again

m = (y2-y1)/(x2-x1)

m = (410-300)/(8-4)

m = 110/4

m = 27.5

Let B = 27.5

--------------------------

For the third answer choice, we have the points (2,240) and (8,410)

Once again, use the slope formula.

m = (y2-y1)/(x2-x1)

m = (410-240)/(8-2)

m = 170/6

m = 28.33 approximately

Let C = 28.33

--------------------------

Lastly for choice D we have the points (4,300) and (10,460)

So,

m = (y2-y1)/(x2-x1)

m = (460-300)/(10-4)

m = 160/6

m = 26.67 approximately

Let D = 26.67

--------------------------

To recap everything, we found these four average rates of change for choices A through D

  • A = 32.5
  • B = 27.5
  • C = 28.33 (approximate)
  • D = 26.67 (approximate)

We see that A is the largest of that group. Therefore, the greatest average rate of change of that group is from month 6 to month 10. This is why <u>choice A</u> is the final answer.

6 0
2 years ago
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