MATHEMATICS HIGH SCHOOL

7x+2y=11
-2x+3y=29
How do you solve this problem?

Answers

Answer 1
Answer: you subsitute 11-2y/7  when you do that you get -2 11-2y/7 +3y=29: y=9  isolate y   -2 11-2y/ +3y=29 y=9 
 x= 11-2 . 9/7 x= -1 
 Y=9 X=-1
Answer 2
Answer: X=1 y=2 for the first one

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Solve for x in this equation log9 1/3=x

Answers

The work is shown in the attachment 

Mary Moneypenny went to her bank each week and opened a club account. She deposited $21.75 per time period. If she made 12 deposits before interest was credited, how much would she have deposited before interest was credited?

Answers

Answer:

The $261 Mary deposited before interest was credited .

Step-by-step explanation:

As given

Mary Moneypenny went to her bank each week and opened a club account. She deposited $21.75 per time period.

She deposited $21.75 per time period.

If she made 12 deposits before interest was credited.

Than

Mary deposited before interest was credited = 21.75 × 12

                                                                           = $ 261

Therefore the $261 Mary deposited before interest was credited .
lets see step by step,
she goes 12 times to the bank and made a deposit of $21.75 each time, therefore she have deposited:

deposit = 12*21.75 = $261

that is the amount she deposited before receiving any interest.

One-sixth of the girls and two-sevenths of the boys in a school marching band are in the percussion section. The percussion section has 6 girls and 10 boys. How many students are in the marching band?

Answers

There are 71 students in the marching band.

What is an expression?

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Given that one-sixth of the girls and two-sevenths of the boys in a school marching band are in the percussion section. The percussion section has 6 girls and 10 boys.

Let the total number of girls in the band be y and that of boys x;

Then;

1/6y = 6

y=6 x 6

y= 36

There are 36 girls in the school.

2/7x = 10

2x = 10 x 7

2x = 70

x = 70/2

x=35

Therefore, there are 71 students in the marching band.

To know more about an expression follow

brainly.com/question/4344214

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Let the total number of girls in the band be y and that of boys x;
Then;
1/6y=6
y=6*6
y= 36
There are 36 girls in the school.

2/7x=10
2x=10*7
2x=70
x=70/2
x=35
There are 71 students in the band.

Use long division to find the quotient. 

(x²+6x-27) ÷ (x-3)

Answers

( x^2+6x-27 )/(x-3) = ( x^2+6x +3x-3x-27 )/(x-3) = ( x^2+9x-3x-27 )/(x-3) = \n \n =( x(x +9 )-3(x+9) )/(x-3) = ( (x +9 ) (x-3) )/(x-3) = x+9 \n \n \n x-3\neq 0 \nx\neq 3\nD=R\setminus \left \{ 3 \right \}

Find the value of x when (x+12) 110

Answers

(x+12)=110

Subtract 12 from both sides.

x=110−12

Subtract 12 from 110 to get 98.

x=98
If (x+12) = 110

You would isolate the variable by subtracting 12

(x+12) -12 = 110 -12

Simplify

x = 98

30 points to anyone that can answer correctly in probability.

Answers

Formula: P(A or B)=P(A)+P(B)-P(A or B)  

p(c)=7/18

p(s)=6/18

p(c or s)=2/18

0.39+0.33-0.11=

answer:0.61

Formula: P(A or B)=P(A)+P(B)-P(A or B)  


p(c)=7/18


p(s)=6/18


p(c or s)=2/18


0.39+0.33-0.11=


answer:0.61
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