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max2010maxim [7]
3 years ago
15

A scientist was in a submarine below sea level, studying ocean life. Over the next ten minutes, she descended 75.3 feet. How man

y feet had she been below sea level, if she was 154.6 feet below sea level after she descended?
Mathematics
1 answer:
Novosadov [1.4K]3 years ago
6 0
She was initially at a depth of 24.7 feet before she rose
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suppose you currently own a clothes dryer that costs $20/month to operate. A new efficient dryer cost $510 and has an estimated
prohojiy [21]

The first dryer is 25 a month, so 25 times x, or 25x.  

The second is 15 per month, plus an additional $710 cost, so 15x + 710. Set these equations equal to each other to find x, the amount of months where the cost of the first dryer will equal the cost of the second dryer.  

25x= 710 + 15x  

-15x -15x  

10x=710  

x=71 months

Hope this helps

Your Welcome

8 0
3 years ago
Read 2 more answers
8+x/2=-12 i need help badly
Musya8 [376]
First subtract 8 from both sides 
leaving you with x/2 = -20 
Then multiply both sides by two to get rid of the denominator
which leaves you with x = -40
4 0
3 years ago
Read 2 more answers
Select the equation in which you use the inverse property of multiplication to find the solution.
loris [4]

Given:

Equations using properties.

To find:

The equation which use the inverse property of multiplication.

Solution:

<u>Inverse property of multiplication:</u>

<em>The product of any number and its reciprocal is always 1.</em>

Let us select the option which uses inverse property of multiplication.

Option A: \left(\frac{3}{4} \cdot \frac{4}{3}\right)+7=8

Inverse of \frac{3}{4} is \frac{4}{3}. Their product is 1.

$\frac{3}{4} \cdot \frac{4}{3}=1

This equation uses the inverse property of multiplication.

Option B: \left(-\frac{7}{8}+\frac{7}{8}\right)+4=4

Inverse of \frac{-7}{8} is \frac{8}{-7}

So, it is not true equation.

Option C: (-5 \cdot 0)-9=-9

Inverse of -5 is -\frac{1}{5}.

So, it is not true equation.

Option D: \left[7 \cdot\left(\frac{5}{7}-\frac{4}{7}\right)\right]+8=9

Here also inverse property is not used.

So, it is not true equation.

Hence the equation use the inverse property of multiplication is

$\left(\frac{3}{4} \cdot \frac{4}{3}\right)+7=8.

7 0
3 years ago
What's equivalent to 9/15
yan [13]
A fraction equivalent to 9/15 is 3/5

To find equivalent fractions, you have to find a a divisor that both the numerator and denominator has. Then you divide the numerator and denominator by that divisor.

Example: 9 and 15 are divisible by 3.
 9 is the numerator.9 divided by 3 is 3. so the numerator of the equivalent fraction is now 3.
15 is the denominator. 15 divided by 3 is 5. the denominator is now five.

Hope this helps! :)

7 0
3 years ago
Read 2 more answers
What is the complement of an 18 degree angle
svlad2 [7]

Answer:

The complementary angle is 72

Step-by-step explanation:

Complementary angles add to 90 degrees

Let x be  the complementary angle

x+18 = 90

Subtract 18 from each side

x = 90-18

x = 72

6 0
4 years ago
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