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liubo4ka [24]
3 years ago
7

Will mark brainliest to best answer!

Mathematics
1 answer:
dsp733 years ago
3 0

Step-by-step explanation:

x is the independent variable

y is the dependent variable

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Pleaseeee helpppp!!!!​
kondor19780726 [428]

The right answer is Option A:x=\frac{rs-t}{2}

Step-by-step explanation:

Given expression is;

s=\frac{2x+t}{r}

We will solve this expression for x, therefore,

Multiplying both sides by r

r*s=\frac{2x+t}{r}*r\\rs=2x+t

Subtracting t from both sides

rs-t=2x+t-t\\rs-t=2x\\2x=rs-t

Dividing both sides by 2

\frac{2x}{2}=\frac{rs-t}{2}\\x=\frac{rs-t}{2}

The right answer is Option A:x=\frac{rs-t}{2}

Keywords: subtraction, division

Learn more about subtraction at:

  • brainly.com/question/1238144
  • brainly.com/question/12497249

#LearnwithBrainly

7 0
3 years ago
2+x^2=18<br> Help please
Harlamova29_29 [7]

Answer:

2+x^2=18 = 2+4^2=18

Step-by-step explanation:

Because when you have the ( ^2) then that means your going to multiply a number by the same number and then 4 times 4 equals 16 and you still have the +2 therefore you add that on the 16 and 16+2 equals 18.

3 0
3 years ago
Whoever helps me is my saviour! I need this in by tomorrow!
Alenkasestr [34]

Answer:

1) \frac{7}{8}+\frac{2}{5}=\frac{7\times5+2\times8}{40}=\frac{35+16}{40}=\frac{51}{40}.

2) 2\frac{1}{3}\times \frac{1}{4}=\frac{7}{3}\times\frac{1}{4}=\frac{7}{12}

hence, answer is 7/12.

3) We have to divide £72 in the ratio 2:3:1

the total of the ratio is=2+3+1=6

so on dividing 72 into 6 parts we have 72/6=12

First '2' parts=2×12=24

second '3' part=3×12=36

last '1' part=1×12=12

so dividing £72 in the ratio 2:3:1 is: £24,£36 and £12

4) 39 people out of 65 have blonde hair.

Number of people who do not have blonde hair=65-39=26

percentage people who do not have blonde hair is given by:

=\frac{26}{65}\times100\\ \\=40%

Hence, percentage people who do not have blonde hair is 40%

5) 20% of 90= (20/100)×90

                       =18

Hence, 20% of 90 is 18.

6) Factorise

  2x^2+18x^3=2x^2(1+9x)\\\\2x^2+18x^3=18x^2(x+\frac{1}{9})

7) Expand

(y-8)(y-6)=y(y-8)-6(y-8)=y^2-8y-6y+48\\\\(y-8)(y-6)=y^2-14y+48

8)

x^2+4x+3=x^2+x+3x+3=x(x+1)+3(x+1)=(x+3)(x+1).

9)

y^{0}=1

10)

0.0342=3.42\times10^{-2}

11) x= -4 y=3

and z=4 x-y^3

z=4×(-4)-3^3

z= -43

12) y+2x=x-2\\\\2x-x=-y-2\\\\x=-y-2

13) 8-7x=22\\\\7x=8-22\\\\7x=-14\\\\x=-2

Hence x= -2

14) 5,10,15,20,....a_{1}=5=5\times1 , a_{2}=10=5\times2 , a_{3}=15=5\times3,........,a_{n}=5n=5\timesn

Hence,  nth term is 5n.

15) (63×128)/32.9=245.106.

16) 938×21=19698.




8 0
3 years ago
Read 2 more answers
HELP ASAP!!!<br> On the coordinate plane below, what is the length of AB?
Otrada [13]
The length is 14
Just count the spaces in between to get the result of 14
4 0
3 years ago
Read 2 more answers
You buy a pair of jeans (j) that cost $12, two pair of socks (s) for $2 each, and three tops (t) that cost $6 each. Which expres
mars1129 [50]

Answer:

Step-by-step explanation:

1*12 + 2*2 + 3*6 = 12 + 4 +18 = $34

4 0
3 years ago
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