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2 years ago

1. Antonio started the question 2x + 1 = 11 by writing 2x = 10. Which

Mathematics

1 answer:

lana [24]2 years ago

3 0

The property that Antonio has used is what is called the Subtraction property of equality.

<h3>What is the Subtraction property of equality?</h3>

This is the property that tells us in mathematics that is a number is subtracted from an inequality, they would still remain the same.

2x + 1 = 11 is the same thing as also writing 2x = 10. The difference is that the like terms were on the same side.

Read more on Subtraction property of equality here:

brainly.com/question/1005442

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9 Questions/45 points

Finger [1]

You have a lot of questions here, try breaking them up into multiple posts and you may get more responses.

I will help with some.

<span>(x+3)=0

The solution is just -3.
-----------------------------------------------------------------
3m(m-4)=0

The two solutions are 0 and 4.
-----------------------------------------------------------------
(r-3)(r+2)=0

The two solutions are and 3 and -2.
</span>
I hope this gets you started in the right direction.

3 0

3 years ago

What is the answer to the question

fenix001 [56]

Answer:

Step-by-step explanation:

Sorry not sorry I really need the points

6 0

3 years ago

Read 2 more answers

One member of the debate team is going to be chosen president. each member is equally likely to be chosen. the probability that

inessss [21]

Let
x-------> <span>the probability that a boy is chosen
B------> </span>number of boys in the debate team
G------> number of girls in the debate team<span>

we know that
B+G=20-----> G=20-B-----> equation 1
</span>probability that a boy is chosen=number of boys in the debate team/total of people
so
x=B/20-------> equation 2

t<span>he probability that a girl is chosen is 2/3 the probability that a boy is chosen
</span>probability that a girl is chosen=(2/3)*x
probability that a girl is chosen=G/20
(2/3)*x=G/20-----> equation 3
substitute equation 1 in equation 3
(2/3)*x=[20-B]/20----> equation 4

resolve the equations system
x=B/20
(2/3)*x=[20-B]/20

using a graph tool
see the attached figure
the solution is
x=0.6
B=12
G=20-12-----> G=8

number of boys in the debate team is 12
number of girls in the debate team is 8
the probability that a boy is chosen is 0.6 ----> 60%
the probability that a girl is chosen is 0.6*(2/3)----> 0.4---> 40%

the answer is
number of girls in the debate team is 8

7 0

4 years ago

Which equation uses the distributive property to show 3 × 47 = 141? A) 3 + (40 × 7) = 141 B) 3 × (40 × 7) = 141 C) 3 + (40 + 7)

navik [9.2K]

Answer:

D) 3 × (40 + 7) = 141

Step-by-step explanation:

(3 × 40 = 120) + (3 × 7 = 21) = 141

6 0

3 years ago

Read 2 more answers

Whats the coefficient <br>x - 7y + 8

s2008m [1.1K]

Answer:

-7

Step-by-step explanation:

-7 is the number that is attached to the y. It is the coefficient. Another possible coefficient is 1, but you do not need to write it, as anything multiplied by 1 is equal to the original number.

Hope this was helpful! Let me know if you have any further questions. :)

4 0

3 years ago