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3 years ago

-5(x+3) - 4x = 6(2x + 3) - 12

Mathematics

1 answer:

rosijanka [135]3 years ago

5 0

It would be B.
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Which of the following equations is written in standard form?

Harlamova29_29 [7]

Standard Form is ax + by = c, where a, b, and c are not fractions and a is not negative.

So, you can go through each of your options to see which ones work with those rules.

A. 2.5x + 3y = 12 No, this is not in Standard Form. 2.5 can be rewritten as 2<span> $\frac{1}{2}$ , menaing A is a fraction, which you can't have.

B. -10x - 3y = 1 No, this is not in Standard Form. A is -10, but A can't be negative.

C. 2x + 3y = 12 Yes, this is in Standard Form. It follows all of the rules.

D. 5x + 5y = 10 Yes, this is in Standard Form. It follows all of the rules.

So, C and D are both written in Standard Form.

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6 0

4 years ago

What is the sum of 6/12 and 1/2

tamaranim1 [39]

Answer:

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Solve the system of equations. Show your work.<br> y = x^2 -3x +4 <br> x + y = 4

sesenic [268]

Answer:

x + y = 2 , y = x 2 − 4 x + 4

Replace all occurrences of

with x 2 − 4 x + 4

in each equation.

x 2 − 3 x + 4 = 2 y = x 2 − 4 x + 4

Solve for

in the first equation.

x = 2 , 1 y = x 2 − 4 x+ 4

Replace all occurrences of

x with 2

in each equation.

y=0 x = 2

Replace all occurrences of x

with 1

in each equation.

y = 1 x = 1

The solution to the system is the complete set of ordered pairs that are valid solutions.

( 2 , 0 ) ( 1 , 1 )

The result can be shown in multiple forms.

Point Form:

( 2 , 0 ) , ( 1 , 1 )

Equation Form:

x=2 , y = 0 x = 1 , y = 1

Step-by-step explanation:

3 0

3 years ago

Find the principal which amounts to $918 in 1 year at a simple interest<br> of 2% per annum

Fantom [35]

Answer:

P = $900

Step-by-step explanation:

Simple Interest Formula: $A = P(1+rt)$

Where A is the final amount,

P = Principal

r = Interest Rate in Percent or $\frac{r}{100}$ per annum

t = time in years

From the information given in the question,

A = $918

r = 2% per annum or $\frac{2}{100}$

t = 1 year

Lets substitute these values to find P, the principal.

$P(1+(\frac{2}{100} )(1))=918\\P(1+0.02)=918\\1.02P=918\\P = \frac{918}{1.02} \\=$900$

Therefore, P = $900

4 0

2 years ago

the ratio of red ribbons to green ribbons is 4 to 6 if there a total of 32 red ribbons then how many green ribbons are there?

melomori [17]

There are 48 green ribbons

<h3><u>Solution:</u></h3>

Given that the ratio of red ribbons to green ribbons is 4 to 6

Which can be written in following way:-

$\frac{\text {Red} r i b b o n}{\text {Green ribbon}}=\frac{4}{6}$

There are total number of 32 red ribbons

We have to determine the number of green ribbon

Let the number of green ribbon be ‘6a’

And number of red ribbons be "4a"

Given number of red ribbons = 32

4a = 32

a = 8

number of green ribbon = 6a = 6(8) = 48

Therefore number of green ribbons is 48

7 0

3 years ago