All categories

3 years ago

What is the solution for x in the equation -x + 3/7 = 2x - 25/7

Mathematics

1 answer:

inna [77]3 years ago

4 0

Answer:

4/3

Step-by-step explanation:

-X + 3/7 = 2X - 25/7

2X + X = 3/7 + 25/7

3X = 28/7

3X = 4

X = 4/3

You might be interested in

Which expression can be used to find the sum of the polynomials? (9 – 3x2) + (–8x2 + 4x + 5)

Brums [2.3K]

Answer:

- 11x² + 4x + 14

Step-by-step explanation:

Given

(9 - 3x²) + (- 8x² + 4x + 5) ← distribute both parenthesis by 1

= 9 - 3x² - 8x² + 4x + 5 ← collect like terms

= - 11x² + 4x + 14 ← sum of the polynomials

6 0

4 years ago

The bottom end of a ramp at a warehouse is 10 feet from the base of the main dock and is 11 feet long.

Otrada [13]

Answer:

The dock is $4.58$ $ft$ high

Step-by-step explanation:

we know that

Applying the Pythagoras theorem

Let

x------> the height of the dock

$11^2=x^2+10^2$

Solve for x

$x^2=11^2-10^2$

$x^2=121-100$

$x^2=21$

$x=\sqrt{21}$ $ft$

$x=4.58$ $ft$

5 0

2 years ago

At 5.45p.M .,lixin,khairul and Devil are at the starting point of a 1-km circular path. Lixin Takes 18 minutes to walk one round

sweet [91]

Answer:

$Meeting\ Time = 6:03\ pm$

Step-by-step explanation:

Given

$Start\ Time= 5:45pm$

$Lixin = 18\ min/round$

$Khairul = 360\ seconds/round$

$Devi = 4minutes/2\ rounds$

Required

Determine their next meeting time

First, we need to get their unit rate in minutes per round

$Lixin = 18\ min/round$

$Khairul = 360\ seconds/round$

Convert 360 seconds to minutes

$Khairul = \frac{360}{60} min/round$

$Khairul = 6 min/round$

$Devi = 4minutes/2\ rounds$

Divide by 2/2

$Devi = 2mins/round$

So, we have:

$Lixin = 18\ min/round$

$Khairul = 6 min/round$

$Devi = 2mins/round$

Next, is to determine the LCM of 18, 6 and 2

$18=2 * 3 * 3$

$6 = 2 * 3$

$3 = 3$

Their LCM is:

$LCM = 2 * 3 * 3$

$LCM = 18$

This means that they will meet 18 minutes after their initial time of departure.

So:

$Meeting\ Time = 5:45\ pm + 18\ minutes$

$Meeting\ Time = 6:03\ pm$

3 0

3 years ago

Which blocks have a volume between 20 and 30 cubic centimeters?

Artyom0805 [142]

Answer: c

Step-by-step explanation:

7 0

3 years ago

Can someone answer this for me pls and thank you

kherson [118]

x in terms of b:

-2(bx - 5) = 16

-2bx + 10 = 16

-2bx = 6

x = 6 / -2b

x = -3/b

--------------------------------

when b = 3 then

-2(3x - 5) = 16

-6x + 10 = 16

-6x = 6

x = -1

Answer

The value of x in terms of b is -3/b

The value of x when b is 3 is -1

4 0

3 years ago