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leva [86]
3 years ago
5

A deep sea diver descended from a rock that is 45 feet below sea level to a coral reef that is 88 feet below sea level.How far d

id the diver descend from the rock to the coral reef?
Mathematics
2 answers:
xenn [34]3 years ago
6 0

Answer:

Diver descended 43 feet from the rock to the coral reef.

Step-by-step explanation:

Given  : A deep sea diver descended from a rock that is 45 feet below sea level to a coral reef that is 88 feet below sea level.

To find : How far did the diver descend from the rock to the coral reef.

Solution : We have given

A deep sea diver descended below sea level = -45 feet .

A coral reef that is 88 feet below sea level = -88 feet.

Because we take the negative value below sea level( 0 ).

Difference = -45 - ( - 88)

Difference = -45 + 88 = 43

Diver descended 43 feet from the rock to the coral reef.

Therefore, Diver descended 43 feet from the rock to the coral reef.

Veseljchak [2.6K]3 years ago
5 0
Just take the difference of 88 and 45.
43 feet
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Sue has $2.80 in dimes and nickels. If she has 13 more dimes than nickels, how many of each coins does she have?
olga55 [171]
I have seen this question before and I think you meant 10 more dimes than nickels.

We can use substitution to answer this question. The value of a nickel is 5 cents, and we can use the variable n to represent the number of nickels. The value of a dime is 10 cents, and we can use the variable d to represent the number of dimes.

First lets figure out the equations.
.10d+.5n=2.80 (the number of nickels (n) multiplied by .5 will tell us their money value. Same thing for the dimes)
d-n=10 (since there are 13 more dimes than nickels, the number of dimes value (d) minus the number of nickels value (n) will give us 10)

Now lets isolate a variable in one of the equations, preferably the second one because it doesn't have any visible coefficients,

d-n=10
-n=10-d (subtracted the d from both sides)
n=-10+d (made the n positive)

Now that we have the value of n, we can plug it into the other equation.

.10d+.05n=2.80
.10d+.05(-10+d)=2.80 (we replaced the n with the value that we previously got)
.10d-.5+.05d=2.80 (did the multiplication)
.15d-.5=2.80 (combined like terms)
.15d=3.30 (added the .5 to both sides)
d=22 (divided both sides by the .15)

Now that we know that there are 22 dimes and we also know that there are 10 less nickels than dimes, so we can subtract 10 from 22 to get the number of nickels. 22-10=12

d=22
n=12


5 0
3 years ago
Please help last one today
murzikaleks [220]
7 28/30 is the answer
4 0
3 years ago
Read 2 more answers
Which of the following is not a career in environmental science? a. Hydrologist b. Toxicologist c. Physiologist d. Ecologist Ple
kodGreya [7K]

Answer:

C

Step-by-step explanation:

No doubt thats the correct answer guys, thank me later

6 0
2 years ago
Can someone help me
mafiozo [28]
If you need to you can write it out. the answer is X=14

5 0
3 years ago
Assume all variables represent non negative numbers . Help please!!
Dafna1 [17]

Answer:

A). 2p^{8}

B). 3m^{7}

Step-by-step explanation:

A). \sqrt{4p^{16}}

    To get the square root of the given expression we will convert it into the square form.

4p^{16}=(2)^2(p^{8})^2 [Since 2×2 = 4 and p^{8}\times p^{8}=p^{16}]

Therefore, \sqrt{4p^{16}}=\sqrt{2^{2}\times (p^{8})^2 }

                             =2p^{8}

B). \sqrt{9m^{44}}

    Since, 9m^{14}=(3)^2\times (m^7)^2

    Therefore,  \sqrt{9m^{44}}=\sqrt{(3)^2\times (m^7)^2} [Since 3² = 9 and (m⁷)² = m¹⁴]

                                   =3m^{7}

7 0
3 years ago
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