MATHEMATICS MIDDLE SCHOOL

0.7777…=7/9
Use this fact to show that 0.077777...=7/90

Answers

Answer 1

Answer:

Step-by-step explanation:

Here we have , 0.7777…=7/9 . And using this fact we need to find show that

0.077777...=7/90 . Let's show this:

In the equation $0.077777...=7/90$ , Let's evaluate RHS :

⇒ $0.077777$

⇒ $(0.77777)/(10)$

But According to question , 0.7777…=7/9 , So

⇒ $(0.77777)/(10)$

⇒ $((7)/(9))/(10)$

⇒ $(7)/(9) ((1)/(10) )$

⇒ $(7)/(90)$

Since , RHS=LHS . Therefore, $0.077777...=7/90$ is proved using fact 0.7777…=7/9 .

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Your friend is good at eng, history & geography. However his parents feel. he should continue to persue science and become a doctor, even though he is not good at science .What your friend can do to convince his parents and what career option he could persue

Answers

I'm not sure of exactly what answer you're looking for here or if this is suppose to be an English essay, but I'll give it a try.

Your friend could try to calmly talk to his parents and explain why he feels he shouldn't pursue a career as a doctor because he isn't good at science.

Also, he could show them the good grades he gets in English, History, and Geography and explain why he should pursue a different career that has to deal with those subjects that he is good at.

Prove to them that a different career would be a better option and maybe he could even get his teacher to vouch for him.

Can you help me with this please

Answers

Step-by-step explanation:

you really on a test?

draw it and measure it out

Please answer and put how

Answers

6 + m/4 = 3 (subtract 6 from both sides)
m/4 = -3 (multiply both sides by 4)
m = -12

Can plug in to original equation to check work:
6 - 12/4 = 3
6 - 3 = 3
3 = 3

The answer m = -12 checks out

first you write out the equation
subtract 6 from both sides
then multiply both sides by 4
because if you multiply something to one side you have to do it to the other one too
m = -12
you can then check work like this
6 - 12/4 = 3
6 - 3 = 3
3 = 3

(m = -12 subtract 6 from both sides)
(m/4 = -3 then you multiply both sides by 4)

2x^2 + x – 1 = 9
Does it have any real solutions? If so what are they?

Answers

$2x^2 + x - 1 = 9 \n \n2x^2 + x -1 - 9=0\n \n2x^2 + x-5x +5x -10 = 0 \n \n 2x^2 -4x +5x -10 = 0\n \n 2x(x -2) +5(x -2) = 0\n \n(x-2)(2x+5)=0\n \nx-2 =0 \ \ or \ \ 2x+5 =0 \n \nx=2 \ \ or \ \ 2x =-5 \n \nx=2 \ \ or \ \ x =-(5)/(2) \n \nAnswer : \ x=2 \ \ or \ \ x=-(5)/(2)$

2x^2 + x – 1 = 9
2x^2+x-1-9=0
2x^2+x-10=0
a=2
b=1
c=-10

Delta=b^2-4ac
Delta=1-4*2*(-10)
delta=1+80
delta=81
rad 81=9

x1=-b-rad 81 /2a
x1=-1-9/2*2
x1=-10/4
x1=-5/2

x2=-b+rad 81 /2a
x2=-1+9/2*2
x2=8/4
x2=2

What properties are shared by rectangles

Answers

-- opposite pairs of sides are equal
-- opposite pairs of sides are parallel
-- interior angles are right angles
-- sum of the interior angles is 360°
-- opposite angles are supplementary
-- adjacent angles are supplementary
-- all of them have at least 2 lines of symmetry (some have 4)

right angles and 2 different sets of the same side
lengths

I got both #5 wrong can someone please help me? :(