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wolverine [178]
3 years ago
6

a submarine descends 60 ft/min. What depth below the water's surface will the submarine reach in 4 min after leaving the surface

Mathematics
1 answer:
elixir [45]3 years ago
7 0
60 x 4 = 240 hope this helps

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Find g of f for f=7x+5 and g(x)=5x^2+4x-3
madreJ [45]
Basically (g of f)x=(f(g(x)) so
g of f=f(g(x))=7(5x^2+4x-3)+5
distribute
f(g(x))=35x^2+28x-21+5=35x^2+28x-16

g of f=35x^2+28x-16
7 0
2 years ago
Explain how knowing 1+7 helps you find the sum for7+1
ss7ja [257]
1+7 and 7+1 are the same equations. The numbers are just switched around .
Example:
1+2=3
2+1+3

<span>They add up to the same answer no matter where they are placed, therefore knowing 1+7 helps you find the sum of 7+1 (again, because they are the same)  </span>
8 0
3 years ago
Please Help!! The line plot shows the length of insects in inches that were collected, how much longer is the longest insect tha
Dmitry [639]

Answer:

D

Step-by-step explanation:

So here we have a line plot that shows lengths of insects and the quantity of insects that fits the description.

For instance, there are 4 Xs for 1/8. This means that there are four insects that are 1/8 inches long. Likewise, there is only 1 X for 7/8. This means that are is only one insect that is 7/8 inches long.

To find out how much longer is the longest insect than the shortest insect, we simply need to subtract the shortest into the longest.

The longest insect we have is the lone insect who is 7/8 inches long.

And the shortest insects we have are the four insects who each measure 1/8. However, we only need 1.

So, subtract:

\frac{7}{8} -\frac{1}{8}

Combine fractions with common denominators:

=\frac{7-1}{8}\\

Subtract:

=\frac{6}{8}

The answer is D.

4 0
3 years ago
Read 2 more answers
A^2-a+12=0 I need the roots
kumpel [21]

Answer:

a = 1/2 (1 ±sqrt(47))

Step-by-step explanation:

a^2-a+12=0

We will complete the square

Subtract 12 from each side

a^2-a+12-12=0-12

a^2-a=-12

The coefficient of a = -1

-Divide by 2 and then square it

(-1/2) ^2 = 1/4

Add it to each side

a^2 -a +1/4=-12 +1/4

(a-1/2)^2 = -11 3/4

(a-1/2)^2= -47/4

Take the square root of each side

sqrt((a-1/2)^2) =sqrt(-47/4)

a-1/2 = ±i sqrt(1/4) sqrt(47)

a-1/2= ±i/2 sqrt(47)

Add 1/2 to each side

a-1/2+1/2 = 1/2± i/2 sqrt(47)

a =  1/2± i/2 sqrt(47)

a = 1/2 (1 ±sqrt(47))

8 0
2 years ago
Every week hector works 20 hours and earns $210.00 he earns a constant amount of money per hour white a equation that can be use
erik [133]

Answer:

to find out how much hector earns a hour we can do

Step-by-step explanation:

210 ÷ 20

I think you missed some writing it doesn't say the whole question. so I'm not really sure^^

8 0
3 years ago
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