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timofeeve [1]
3 years ago
9

Which crustaceans form the base of many food chains

Mathematics
1 answer:
Anettt [7]3 years ago
4 0

Answer:

Step-by-step explanation:

Primary producers — including bacteria, phytoplankton, and algae — form the lowest trophic level, the base of the aquatic food web. ...

Some zooplankton including copepods, rotifers, larval stages of some fish and invertebrates are grazers and drift through the water grazing on phytoplankton.

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Solve the equation <br>8(4- x) = 7x + 2<br>x=​
Jet001 [13]

Answer: x=2

Step-by-step explanation:

Expand.

32−8x=7x+2

Add 8x to both sides.

32=7x+2+8x

Simplify  7x+2+8x7x+2+8x  to  15x+215x+2.

32=15x+2

Subtract 22 from both sides.

32−2=15x

Simplify  32−2  to  30.

30=15x

Divide both sides by 15.

30/15=x

Simplify 30/15 to 2

2=x

Switch sides.

x=2

7 0
3 years ago
What is the relationship of the line 3x - y = 5 to the line 6x - 2y = -7?
Marta_Voda [28]

Answer:

Parallel

Step-by-step explanation:

in a Standard from equation, Ax+By=C

slope=-A/B

The slope of first line is -3/-1=3

The slope of second line is -6/-2=3

Same slopes but different C values mean they r parallel.

5 0
3 years ago
Please help <br><br><br> What is the value of x? <br> A:12 <br><br> B:15<br><br> C: 6<br><br> D: 30
pickupchik [31]

Answer: A, 12

Step-by-step explanation:

The line in the middle is a midsegment, making the two triangles similar by a ratio of two. So, dividing 60 by five will give you twelve

4 0
3 years ago
Find the radius of a circle if it’s circumference is numerically equal to its area
kotykmax [81]

Answer:

Step-by-step explanation:

hello :

if : r  the radius  ( r ≠0)

the circumference is :  2πr

the area is : πr²

so : πr² = 2πr

simplify by : r π  you have : r=2

5 0
3 years ago
Nov 09, 17:58:28 AM
Marianna [84]
The percent discount is 30%.
If you multiply $32 by .30, you will get $9.60. That is the amount of the discount. If you subtract $9.60 from $32, you will get $22.40 which is what he paid before tax. Therefore the percent discount is 30%.
7 0
3 years ago
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