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MrMuchimi
3 years ago
10

PLEASE HELP MATHS PROBLEM!!!

Mathematics
2 answers:
UkoKoshka [18]3 years ago
5 0

Step-by-step explanation:

\frac{5}{1 -  \sqrt{7} }  \\  multiply \: both \: by \: (1 +  \sqrt{7) }  \\  \frac{5(1 +  \sqrt{7)} }{(1 -  \sqrt{7})(1 +  \sqrt{7)}  }  \\ =   \frac{5(1 +  \sqrt{7)}}{1 -  { \sqrt{7} }^{2} }   \\  =  \frac{5(1 +  \sqrt{7)} }{1 - 7}  \\  =  \frac{5(1 +  \sqrt{7)} }{ - 6}  \\  =  \frac { - 5}{ \:  6} \frac{(1 +  \sqrt{7}) }{}

adoni [48]3 years ago
4 0

Just ask google ot will halp you better but i think its -48

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A jar of quarters and dimes has total value of $20.70. The jar has 10 more quarters than dimes. To find the numbers of quarters
lakkis [162]

There are 62 quarters and 52 dimes in the jar.

Step-by-step explanation:

Given,

Worth of jar coins = $20.70 = 20.70*100 = 2070 cents

1 Quarter = 25 cents

1 Dime = 10 cents

Let,

Number of quarters = x

Number of dimes = y

According to given statement;

25x+10y=2070    Eqn 1

x=y+10     Eqn 2

Putting value of x from Eqn 2 in Eqn 1

25(y+10)+10y=2070\\25y+250+10y=2070\\35y=2070-250\\35y=1820\\

Dividing both sides by 35

\frac{35y}{35}=\frac{1820}{35}\\y=52

Putting y=52 in Eqn 2

x=52+10\\x=62

There are 62 quarters and 52 dimes in the jar.

Keywords: linear equation, substitution method

Learn more about linear equations at:

  • brainly.com/question/12801884
  • brainly.com/question/12817595

#LearnwithBrainly

8 0
3 years ago
Rotating a polygon in Quadrant II 270° clockwise is the same as what?
lora16 [44]
The answer to this question would be: <span>rotating it 90° counterclockwise. 

When you rotate up an object 360</span>°, it will revert into its original places. That mean, if you rotate it more than 180°, then rotating it to the opposite direction will be easier/closer than you do. In this case, you rotate the polygon 270° so it will equal to 360° - 270°= 90° of opposite direction, which means counterclockwise. The quadrant shouldn't have any meaning in this question.
8 0
3 years ago
3.27525 in expanded form
Vikentia [17]

three and twenty-seven thousand, five hundred twenty-five hundred-thousandths
5 0
3 years ago
Read 2 more answers
PLEASE HELP NO LINKS
Artyom0805 [142]

Answer:

y = -2/3x + 3

Step-by-step explanation:

( -3, 5)

Parallel slope = -2/3

Slope-intercept:

y - y1 = m(x - x1)

y - 5 = -2/3(x + 3)

y - 5 = -2/3x - 2

y = -2/3x + 3

7 0
3 years ago
Which expression can you use to find 16÷4/5?
Archy [21]

16÷4/5 is 0.8

Step-by-step explanation:

i did it in a computer

5 0
3 years ago
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