Pleasee help!!! I'm very confused

3 Simplify the expression below: 20 – 10y – 7y + 9

andre [41]

Answer:

y = 1.705882353

Step-by-step explanation:Combine like terms: 20 + 9 = 29

29 + -10y + -7y = 0

Combine like terms: -10y + -7y = -17y

29 + -17y = 0

Solving

29 + -17y = 0

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '-29' to each side of the equation.

29 + -29 + -17y = 0 + -29

Combine like terms: 29 + -29 = 0

0 + -17y = 0 + -29

-17y = 0 + -29

Combine like terms: 0 + -29 = -29

-17y = -29

Divide each side by '-17'.

y = 1.705882353

Simplifying

y = 1.705882353

5 0

3 years ago

Read 2 more answers

Somebody please help meee!!!!

iragen [17]

1703.42
Hope this helps! Have a great day

6 0

3 years ago

Read 2 more answers

At what annual simple interest rate should a loan of Rs.5000 be given to receive the same interest that is received when a loan

IrinaK [193]

Formula :- 

$\sf \: S.I \: = \frac{P.R.T}{100} \\$

Given that :- 

The interest received on Rs 5000 = interest received on Rs 6000 , when rate of interest on Rs 6000 is 8 % .

To Find :- 

The rate of interest on rupees 5000 .

Solution :- 

→ S.I = P.R.T/100

→ 5000.R. 1 / 100 = 6000 × 8 × 1 / 100

→ 50 R = 60×8

→ 50 R = 480

→ R = 480/ 50

→ Rate of interest = 9.6 %

So rate on Rs 5000 is 9.6 %

8 0

3 years ago

For the data in the table tell whether y varies directly with X if it does write an equation for the direct variation

frozen [14]

a) Option B Direct variation, y=1.8x is correct option.

b) Option A Not a direct variation is correct option.

Step-by-step explanation:

a) for the data in the table tell whether y varies directly with X if it does write an equation for the direct variation

The direct variation is represented by:

$y=kx \,\,or\\\frac{y}{x}=k$

We need to find k.

Given the values of x and y in table we will find k. if value of k is constant, so x and y varies directly

$\frac{5.4}{3}=1.8\\\frac{12.6}{7}=1.8\\\frac{21.6}{12}=1.8$

Since value of k is constant i.e 1.8 so, y varies directly with x.

Option B Direct variation, y=1.8x is correct option.

b) For the data in the table tell whether Y varies directly with x if it does write an equation for the direct variation.

The direct variation is represented by:

$y=kx \,\,or\\\frac{y}{x}=k$

We need to find k.

Given the values of x and y in table we will find k. if value of k is constant, so x and y varies directly

$\frac{1}{-2}=-\frac{1}{2}\\\frac{6}{3}=2\\\frac{11}{8}=1.3$

Since value of k is not constant so, y doesn't varies directly with x.

Option A Not a direct variation is correct option.

Keywords: Direct variation:

Learn more about Direct variation at:

#learnwithBrainly

5 0

3 years ago

If f(x)=5^x+2x and g(x)=3x-6 find (f+g)(x)

azamat

Answer:

(f+g)(x) = 5^x+5x-6

Step-by-step explanation:

f(x)=5^x+2x

g(x)=3x-6

(f+g)(x) = 5^x+2x+3x-6

Combine like terms

(f+g)(x) = 5^x+5x-6

3 0

3 years ago