1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Murrr4er [49]
3 years ago
13

What is 3x +2- 7x = -14

Mathematics
1 answer:
Alecsey [184]3 years ago
5 0

Answer:

4

Step-by-step explanation:

3x<u>+2</u>-7x=<u>-14</u>

3x-7x=-14-2

-4x=-16 /:(-4)

x=4

You might be interested in
X-3 (2x-7)=76<br> what is x
liq [111]
     x - 3(2x - 7) = 76
x - 3(2x) - 3(-7) = 76
       x - 6x + 21 = 76
            -5x + 21 = 76
            <u>       - 21  - 21</u>
                    <u>-5x</u> = <u>55</u>
                     -5     -5
                       x = -11
<u />
5 0
3 years ago
hello! So the people in Indian server were bad(as they would not answer and instead spam) so I switched servers and I hope you a
Art [367]

Answer:

\displaystyle E=26log2-24log3+8log 5

Step-by-step explanation:

<u>Logarithms</u>

There are certain properties of the logarithms we'll need to recall in order to simplify the expression given in the question. We'll list them below

log(x.y)=logx+logy\\log(x/y)=logx-logy\\logx^y=y.logx

We'll also need to factor the following numbers into their prime factors:

20=2^2\cdot 5

16=2^4

15=3\cdot 5

25=5^2

24=2^3\cdot 3

81=3^4

80=2^4\cdot 5

The original expression is

\displaystyle E=log20+16log\frac{16}{15}+12log\frac{25}{24}+log\frac{81}{80}

Plugging in the factored values

\displaystyle E=log(2^2\cdot 5)+16log\frac{2^4}{3\cdot 5}+12log\frac{5^2}{2^3\cdot 3}+log\frac{3^4}{2^4\cdot 5}

Applying the properties we have

\displaystyle E=log2^2+log 5+16(log2^4-log3-log 5)+12(log5^2-log2^3-log 3)+log3^4-log2^4-log 5

\displaystyle E=2log2+log 5+16log2^4-16log3-16log 5+12log5^2-12log2^3-12log 3+log3^4-log2^4-log 5

\displaystyle E=2log2+log 5+64log2-16log3-16log 5+24log5-36log2-12log 3+4log3-4log2-log 5

Simplifying

\boxed{\displaystyle E=26log2-24log3+8log 5}

7 0
4 years ago
Triangle A B C is cut by line segment D E. Line segment D E goes from side A B to B C. Lines A C and D E are parallel. The lengt
fgiga [73]

Answer:

2 units

Step-by-step explanation:

you look at the picture and you can see why

5 0
4 years ago
Read 2 more answers
Calculate using any strategy.<br> what is the answer of 47% of 88?
Dominik [7]

Answer:41.36

Step-by-step explanation:

6 0
4 years ago
Mario vende dos autos a 30 000 dólares cada uno. En la venta de uno ganó el 20% y en la
Mariana [72]

Answer:

Mario perdió dinero, perdió 2500 dólares

Step-by-step explanation:

En el primer caso, Mario está vendiendo su carro en 30 000 dólares. En otras palabras, el precio de venta es 30 000. Te dice que en el primer carro ganó 20%, o sea que su precio de venta es una incógnita que llamaremos x y gano 20% de x. Podemos expresarlo de esta manera

x = precio de compra carro 1

x + (20% de x) = 30 000

x = 100 % de x

(100% de x) + (20% de x) = 30 000

120% de x =30 000

120% = 1.2

1.2x = 30 000

x = 25 000

El segundo caso es bastante parecido. Te indica que el precio de venta sigue siendo el mismo, pero el precio de compra es diferente. El precio de venta sigue siendo 30 000, pero el precio de compra del segundo carro esta vez será "y". En este caso, pierde 20% del precio de compra, o osea, pierde 20% de y. Se puede expresar de la siguiente manera:

y = precio de compra carro 2

y - (20% de y) = 30 000

y = 100% de y

(100% de y) - (20% de y) = 30 000

80% de y = 30 000

80% = 0.8

0.8y = 30 000

y= 37 500

Entonces tenemos que el precio de compra del carro uno es 25 000 dólares y el precio de compra del carro dos es de 37 500. Si sumamos ambas cantidades, tenemos que ambos carros costaron 62 500 dólares. Como vendió esos dos autos a 30 000 dólares cada uno, recibió 60 000 dólares. El precio por el que vendió los autos (60 000) es menor al precio del que los compro (62 500), por lo que eso representa una perdida.

Para hallar la cantidad que ganó o perdió (en este caso perdió) debes restar el precio de venta menos el precio de compra.

60 000 - 62 500 = -2 500

Como es un número negativo, representa una perdida.

6 0
3 years ago
Other questions:
  • What do u need to do
    11·2 answers
  • In a group on 48 children there are twice as many boys as girls how many boys are there
    10·2 answers
  • How do you solve -k/5 times 7/5
    8·1 answer
  • A cylinder of metal with a mass of 23.6546 g is submerged in a graduated cylinder containing 25.20 mL of water. The water level
    11·1 answer
  • Tanya stores her coins in a cylindrical container. The container has a diameter of 8 inches and a height of 15 inches. Which is
    5·1 answer
  • Thomas had 12 juice boxes he gave some to his sisters he now has more rhan 5 left.Which inequality can be used to find j the num
    14·1 answer
  • How do you write 4,408,730 in expanded form
    14·2 answers
  • I have a past due balance of $87.50 and my new charges are $75.00. I was also charged a late fee of 15% of my past due balance.
    11·2 answers
  • Two cones have their heights in the ratio 1 : 3 and the radius of their bases in the ratio 3 : 1, show that their volumes are in
    15·1 answer
  • 7/8 as a decimal rounded to the nearest tenth. Write 3x+4y=19 in intercept form Solve 3X +7=35. What is a transformation that t
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!