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3 years ago

7 - 9x = ( x + 3 ) + 2x

Mathematics

1 answer:

Gwar [14]3 years ago

4 0

Answer:

1/3

Step-by-step explanation:

7-9x=(x+3)+2x

7-9x=x+3+2x

7-3=x+2x+9x

4=12x

x=1/3

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What is the absolute value of 1/2?

harina [27]

The Absolute Value of a number is "the magnitude of a real number without regard to its sign". So the Absoulute Value of 1/2 is |1/2|

7 0

4 years ago

What is 4 3/4 of rupee 1

devlian [24]

Answer:

$\frac{19}{4}=Rs 1$

$Rs. 1 = 100 paise$

$\frac{19}{4}=100 paise$

$4.75=100 paise$

$\frac{4.75}{100}=paise$

$0.0475=paise$

i hope this will help you :)

=1,075

Therefore,

\frac{43}{4} =1,075

Hope it helps you!!!

Plz Mark me as a brailiest

Step-by-step explanation:

5 0

3 years ago

There are 23 oranges and 16 apples in a basket. Find the ratio of the number of apples to the number of oranges

Harrizon [31]

Answer:

16:23

Step-by-step explanation:

It's really simple

4 0

3 years ago

For the first four days of a five day vacation, the mean temperature was 80 degrees. What must the temperature be on the fifth d

V125BC [204]

Answer:

The 5th day must be 90

Step-by-step explanation:

The first 4 days averaged out to 80

You can find their total just by multiplying by 4. That won't tell you the exact values, but it will tell you their total when you add the 4 of them together.

80*4 = 320

Now you need to add another day into the mix. Call it x

320 + x

Now there are 5 days, not 4, and the new total is 82.

(320 + x) / 5 = 82 Multiply both sides by 5

5*(320 + x) / 5 = 82 *5

320 + x = 410 Subtract 320

-320 -320

x = 90

6 0

3 years ago

In a family, each brother has as many sisters as brothers, but each sister has twice as many brothers as she has sisters. How ma

daser333 [38]

Answer:

4 brothers and 3 sisters

Step-by-step explanation:

Let x be the number of brothers and y be the number of sisters in the family.

1. Each brother has x-1 brothers and y sisters. If each brother has as many sisters as brothers, then

$x-1=y.$

2. Each sister has y-1 sisters and x brothers. If each sister has twice as many brothers as she has sisters, then

$2(y-1)=x.$

3. Solve the system of two equations:

$\left\{\begin{array}{l}x-1=y\\ \\2(y-1)=x\end{array}\right.\Rightarrow 2(y-1)-1=y,\\ \\2y-2-1=y,\\ \\2y-y=2+1,\\ \\y=3.$

Then

$x=y+1=3+1=4.$

4 0

4 years ago