All categories

3 years ago

What is 6x - 7y = 2(x+10y )

Mathematics

2 answers:

marysya [2.9K]3 years ago

4 0

6x-7y= 2(x+10y)

x=24/4y

Anna [14]3 years ago

4 0

For this case, we must simplify the following equation:

$6x-7y = 2 (x + 10y)$

We apply distributive property to the terms of the parenthesis on the right side of the equation:

$6x-7y = 2x + 20y$

We subtract "2x" on both sides of the equation:

$6x-2x-7y = 2x-2x + 20y\\4x-7y = 20y$

We add "7y" to both sides of the equation:

$4x-7y + 7y = 20y + 7y\\4x = 27y$

We clear one of the variables:

$y = \frac {4x} {27}$

Answer:

$y = \frac {4x} {27}$

You might be interested in

Plz help and if you don't answer correctly i will report

KIM [24]

Answer:

1st, 3rd, 4th, 2nd

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Fractions order from least to greatest<br> Which is the right answer? Pls help ill give brainliest!!

olya-2409 [2.1K]

Answer:

2/5, 4/7, 5/2

Step-by-step explanation:

5/2=2.5 2/5=.40 4/7= .59 that's aproximately for 4/7

8 0

3 years ago

A contractor has submitted bids on three state jobs: an office building, a theater, and a parking garage. State rules do not all

german

Answer:

The following are the answer to this question:

Step-by-step explanation:

In the given question the numeric value is missing which is defined in the attached file please fine it.

Calculating the probability of the distribution for x:

$\to f(x) = 0.19\ for \ x=14\\\\\to f(x) = 0.29 \ for\ x=7\\\\\to f(x) = 0.38\ for \ x=1\\\\\to f(x)=0.14 \ for \ x=0\\$

The formula for calculating the mean value:

$\bold{ E(X)= x \times f(x)}$

$=14 \times 0.19+7 \times 0.29+1 \times 0.38+0\times 0.14\\\\=2.66 + 2.03+0.38+ 0\\\\=5.07$

$\bold{E(X^2) = x^2 \times f(x)}$

$=14^2 \times 0.19+7^2 \times 0.29+1^2 \times 0.38+0^2 \times 0.14 \\\\=196 \times 0.19+ 49 \times 0.29+1 \times 0.38+0 \times 0.14\\\\= 37.24+ 14.21+ 0.38+0 \\\\=51.83$

use formula for calculating the Variance:

$\to \bold{\text{Variance}= E(X^2) -[E(X)]^2}$

$= 51.83 - (5.07)^2\\\\= 51.83 - 25.70\\\\=26.13$

calculating the value of standard deivation:

Standard Deivation (SD) = $\sqrt{Variance}$

$= \sqrt{26.13} \\\\=5.111$

6 0

3 years ago

What else would need to be congruent to show that ABC DEF by AAS?

marishachu [46]

Answer choice A so angle A is equivalent to angle D

3 0

3 years ago

Read 2 more answers

Of the cars in the parking lot, 20% are silver. If 20% of the cars is 48 cars, what is the total number of cars in the parking l

astraxan [27]

To solve this, we are going to set up a simple rule of three: If 20% are 48 cars, 100% how many cars will be:
$\frac{20----\ \textgreater \ 48}{100----x}$
Now, we can express this as a proportion ans solve for $x$ :
$\frac{20}{100} = \frac{48}{x}$
$x= \frac{(100)(48)}{20}$
$x=240$

We can conclude that there are 240 cars in the parking lot.

3 0

3 years ago