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shepuryov [24]
2 years ago
15

Please help, i have no idea what i did wrong. 20 points !

Mathematics
1 answer:
tresset_1 [31]2 years ago
6 0

Answer:Second Step

Step-by-step explanation:

On the right side in step two you added -3b-15b, and ended up with -12b. This is incorrect. -3b-15b is actually -18b

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PLEASE HELP MEH!!! Will give brainliest!
soldier1979 [14.2K]
Petri dish A has 1080000000000000
Petri dish B has 270000000000
Petri dish a is greater by 1.07973E15
Hope that helped :)

3 0
2 years ago
Read 2 more answers
an online seed supplier packages a seed mix that costs the company 20.70$ per pound the mix includes poppy seeds costing 24$ per
seraphim [82]

Answer:

The quantity of clover seeds in pounds to be added is 11.14

Step-by-step explanation:

Let

x -----> the quantity of poppy seeds in pounds

y -----> the quantity of clover seeds in pounds

we know that

24(x)+13(y)=20.70(x+y) -----> equation A

x=26\ pounds ----> equation B

substitute equation B in equation A and solve for y

24(26)+13(y)=20.70(26+y)

624+13y=538.2+20,70y

20.70y-13y=624-538.2

7.7y=85.8

y=11.14\ pounds

therefore

The quantity of clover seeds in pounds to be added is 11.14

8 0
3 years ago
Read 2 more answers
Arithmetic Series Algebra 2
gtnhenbr [62]

The 6 terms of the series are

... 15, 14, 13, 12, 11, 10

The sum of them is 75.

_____

You could make use of the formula for the sum of the terms, or you could work out the sum from the given expression. It is easier just to list the terms and and them up.

4 0
3 years ago
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I WILL MAKE WHOEVER ANSWERS THIS CORRECTLY THE BRAINLIEST :D Rei is barricading a door to stop a horde of zombies. She stacks bo
ivann1987 [24]

Answer:

See below.

Step-by-step explanation:

Well first, we need to find the weight of the table. We know that 8 boxes weighs a total of 240kg (since each box weights 30kg). Thus, we can conclude that the table weighs 70kg by doing 310-240=70.

Now, we can write our function. Let x equal the amount of boxes.

The table is a set weight, so that would be our constant.

Thus, we will have:

f(x)=30x+70

30x represents the weight each box of book adds to the total. One box equals 30kg, 2 boxes equal 60kg, etc.

The 70 represents the unchanging weight of the table.

In terms of W(x), it will be:

W(x)=30x+70

3 0
3 years ago
Read 2 more answers
The length of a rectangle is 4 less than twice the width. The perimeter of the rectangle is 106 cm. Determine the length of the
horsena [70]

Answer:

Length = 34

Step-by-step explanation:

Perimeter of rectangle = a+a+b+b = 2(a+b)

Let a = length = 2b - 4

Let b = width

Therefore

(2b-4) + (2b-4) + b + b = 106 cm

Bracket off

2b-4+2b-4+b+b = 106cm

Collect like terms

2b+2b+b+b-4-4 = 106cm

6b-8 = 106

6b = 106+8

6b = 114

b = 114÷6

b = 19

To get a

2b - 4

2(19) - 4

38-4

= 34

4 0
3 years ago
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