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Olin [163]
3 years ago
11

(15 points) please please help me

Mathematics
2 answers:
Nataliya [291]3 years ago
7 0
It is D because there are 1,800 seconds in 30 mins so 1,800 * 6 = 10,800
Softa [21]3 years ago
6 0

Answer:

Well 30 minutes as seconds is 1800 already so it would be 10,800 seconds

Step-by-step explanation:

i hope this helps you

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How many solutions does the equation |x + 6| − 4 = c have if c = 5? If c = −10? Complete the explanation
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Answer:

<h2>For c = 5 → two solutions</h2><h2>For c = -10 → no solutions</h2>

Step-by-step explanation:

We know

|a|\geq0

for any real value of <em>a</em>.

|a| = b > 0 -  <em>two solutions: </em>a = b or a = -b

|a| = 0 - <em>one solution: a = 0</em>

|a| = b < 0 - <em>no solution</em>

<em />

|x + 6| - 4 = c

for c = 5:

|x + 6| - 4 = 5           <em>add 4 to both sides</em>

|x + 6| = 9 > 0   <em>TWO SOLUTIONS</em>

for c = -10

|x + 6| - 4 = -10           <em>add 4 to both sides</em>

|x + 6| = -6 < 0   <em>NO SOLUTIONS</em>

<em></em>

Calculate the solutions for c = 5:

|x + 6| = 9 ⇔ x + 6 = 9 or x + 6 = -9         <em>subtract 6 from both sides</em>

x = 3 or x = -15

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A television weighs 7.4 kilograms how many grams does the television weigh
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