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ELEN [110]
3 years ago
15

How do i simplify this

Mathematics
1 answer:
LekaFEV [45]3 years ago
6 0

Answer:

60a - 72ab

Step-by-step explanation:

B and C do not work because there is no "c" in the expression

-3(-4a[0-6b+5])

-3(-4a[5-6b])

-3(-20a+24ab)

60a - 72ab

None of the given choices are correct.

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In a wood there are 420 silver birch trees, 160 oak trees and 300 wild berry trees. what percentage of the trees are oak trees?
Alex73 [517]
I would be happy to help!
First you need to find the total amount of trees by adding up all of the different trees:
420+160+300=880
Next you need to divide the amount of oak trees by the amount of trees in the woods:
160÷880=0.182 (rounded)
Finally to find the precentage we need to multiply the 0.182 by 100 to get the precentage of 18.2% oak trees.
3 0
3 years ago
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write a symbolic rule to represent the relationship in which the output variable y is 12 less than the input variable x.what is
sveticcg [70]

Answer:

the value of output is 29

Step-by-step explanation:

the output variable y is 12 less then the input variable x.

Input variable is x, output variable is y

output values = input variable - 12

now plug in the variable in the equation

output values = input variable - 12

Given the input value is 41

Substitute 41 for x

the value of output is 29

4 0
3 years ago
Students sold raffle tickets to raise money for a field trip. The first 20 tickets sold cost $4 each. To sell more tickets, they
frosja888 [35]
They got $80 from the first twenty tickets. Then they got $136 from the other tickets. 136/2=68. 20+68=88 They sold 88 raffle tickets.
6 0
4 years ago
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I need help with a math question
Julli [10]

Answer:

Question 1: 4.5(10^−7)(2(10^4))

=

9/1000

(Decimal: 0.009)

Question 2:

mass of neutron/mass of electron = 2*10-24/(9*10-28)

2x10^(-24)/9x10^(-28)

d is closest.

Question 3:

4(10^3)(12(10^5))

=4000*1200000

=4*1000*12*100000

=(4*12)*(1000*100000)

=48*100000000

=4800000000

And these things : ^ mean raising the number to become exponets and when I put the number into a bold text thats the answer!

<em>Hope</em><em> </em><em>this</em><em> </em><em>helps</em><em>!</em><em> </em><em>if</em><em> </em><em>so</em><em> </em><em>pls</em><em> </em><em>mark</em><em> </em><em>brainliest</em><em> </em><em>and</em><em> </em><em>heart</em><em>/</em><em>rate</em><em>!</em>

3 0
3 years ago
Compare the probability of winning
kykrilka [37]

Answer:

B. would be the best choice

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4 years ago
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