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RUDIKE [14]
3 years ago
15

How do i simplify something like -2x(2 – 5x) - 3x^2 this?

Mathematics
1 answer:
svlad2 [7]3 years ago
5 0
Distributive property -2x(2-5x) = -4x + 10x^2
Add -4x + 10x^2 - 3x^2
Simplified it is 7x^2 - 4x
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If there is 4 apple trees for every three pear trees but for every 2 avocado trees there is 5 pear trees she is planning to plan
olasank [31]

Answer:

60

Step-by-step explanation:

You need to think of it as an equation system.

First of all, let's call A the apple trees, P the pear trees and V the avocado's trees.

As for every 3 pear trees we have 4 apple trees, it can be written as:

4A = 3P

Then, we can clear the pears dividing both sides by 3:

4A/3 = 3P/3

(4/3)A = P

This is, we have one pear tree for every 4/3 apple trees.

Then we go to the other relation. For every 5 pears trees there are two avocados trees:

2V = 5P

As we want the ratio of avocados to apples we can replace the pear trees by it's expression depending on A:

2V = 5 ((4/3)A)

2V = (20/3) A

Multiplying both sides by 9 we make appear our 18 avocados trees:

2V *9 =( 20/3) A * 9

18 V = 60 A

So, for 18 avocados trees we have 60 apple trees.

8 0
4 years ago
The cost for admission to go to the amusement park is $13 plus $1.50 for each ride. If you have a total of $35.50 to spend, what
Mandarinka [93]
$35.50-$13=$22.50
$22.50/$1.50=15 rides
3 0
3 years ago
Read 2 more answers
Which of the following is the contrapositive of the statement "If I travel, I will go to France"?
shtirl [24]
Contrapositive is basically the converse of the statement. For example, the contrapositive of the statement "If the color is blue, then the fence is blue" is "If the color is not blue, the fence is not blue". Our answer choice that is correct is choice A.

:)

7 0
4 years ago
Read 2 more answers
Can you help me with these too?<br> its for a geometry final practice<br> plisss
ANTONII [103]

Answer:

The answer is B

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is the m∠ABC?<br><br> 1)m∠ABC = 60°<br> 2)m∠ABC = 67°<br> 3)m∠ABC = 120°<br> 4)m∠ABC = 127°
docker41 [41]

we are given

m∠BCD =67

and  m∠BDC=60

we know that

m∠ABC is exterior angle

m∠BCD  and  m∠BDC are interior angles

exterior angle is sum of interior angles

so, we can write it as

m∠ABC=m∠BCD+m∠BDC

now, we can plug values

and we get

m∠ABC=60+67

m∠ABC=127

so, option-4.........Answer


7 0
4 years ago
Read 2 more answers
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