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Rufina [12.5K]
3 years ago
13

6.7x=5.2x+12.3 how to solve this ?

Mathematics
2 answers:
SVETLANKA909090 [29]3 years ago
8 0
6.7x = 5.2x + 12.3\\6.7x- 5.2x = 12.3\\1.5x = 12.3\\x =  \frac{12.3}{1.5} \\\\x=8.2\ \ Answer
Arisa [49]3 years ago
5 0
6.7x=5.2x+12.3\\\\6.7x-5.2x=12.3\\\\1.5x=12.3 \ \ /\cdot 10\\\\15x=123\ \ /:15\\ \\x=\frac{123}{15}\\\\x=\frac{41}{5}\\\\x=8.2
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I need help with Question 14 . I need to submit it by monday...<br> Pls help
GaryK [48]

Answer:

Distance between A and B is 5400 meters

Step-by-step explanation:

Consider "D" the letter to identify distance between A and B

Let's use "t" to identify the time of the first encounter (Devi and Kumar), and create an equation that states that the distance covered by Devi (at 100 m/min) in time "t", is equal to the total distance D minus what Kumar has covered at his speed (80 m/min) in that same time:

Recall that distance equals the speed  times the time:

distance= speed * time

First encounter:

100 * t = D - 80 * t

180 * t = D    Equation (1)

Not, 6 minutes later (at time t+6) , Devi and Li Ting meet .

Then for this encounter the distance covered by Devi equals total distance d minus the distance covered by Li Ting:

100 *(t+6) = D - 75 * (t+6)

100 t + 600 = D - 75 t - 450

175 T + 150 = D    Equation (2)

Now, let's equal equation (1) to equation (2), since D should be the same:

180 t = 175 t + 150

5 t = 150

t = 30

Then the time t (first encounter) is 30 minutes. Knowing this, we can use either equation to find D:

From Equation (1) for example: D = 180 * t = 180 * 30 = 5400 meters

5 0
3 years ago
In her last basketball game, Carla scored 46 points. In the current game, she has scored 24 points so far. How many more two-poi
KatRina [158]

Answer:

Carla needs to make at least 11 two-pointer shots in the surrent game

Step-by-step explanation:

The first thing we can do is to find the difference between the number of points that Carla scored in her first game and her second game.

This will be 46 - 24 = 22 points difference

Carla needs to make a certain number of two-pointers to get at least the same score she had in her previous game.

We can get this number of two-pointers that needed to be made by dividing the difference in scores by 2

i.e number of two-pointer shots = 22/2 =11 shots

Therefore, Carla needs to make at least 11 two-pointer shots to be able to get the same score in her current game.

8 0
3 years ago
Will give out brainliest for the CORRECT answer!
ch4aika [34]

Answer:

162-x=180

x=342

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What’s the size of angle AED
vodomira [7]

Answer:

173

Step-by-step explanation:

8 0
2 years ago
What are the possible values of x in x2 + 3x + 3 = 0?
e-lub [12.9K]

To solve a quadratic equation like ax^2+bx+c=0, you can use the quadratic formula

x_{1,2} = \cfrac{-b\pm\sqrt{b^2-4ac}}{2a}

In your case, a = 1, b = c = 3, so the formula becomes

x_{1,2} = \cfrac{-3\pm\sqrt{(-3)^2-4\cdot 1\cdot 3}}{2\cdot 1}

We can simplify the expression:

x_{1,2} = \cfrac{-3\pm\sqrt{9-12}}{2} = \cfrac{-3\pm\sqrt{-3}}{2}

Since -3 is negative, its square root is computed as

\sqrt{-3} = \sqrt{-1\cdot 3} = \sqrt{-1}\sqrt{3} = \sqrt{3}i

So, the solutions are

x = \cfrac{-3+i\sqrt{3}}{2} \text{ or } x = \cfrac{-3-i\sqrt{3}}{2}

4 0
3 years ago
Read 2 more answers
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