All categories

2 years ago

the question is in the picture, i need the weight of train a and b i’ll give the right answer brainlist :))

Mathematics

2 answers:

frez [133]2 years ago

6 0

Answer:

a 106

b 92

Step-by-step explanation:

Hope this helps!

Andrej [43]2 years ago

5 0

Answer:

$92=B\\A=106$

Step-by-step explanation:

So i did it like this

A= Train A B= Train B

$A+B=198\\A-B=14\\A=198-B\\A=14+B\\(14+B)+B=198$

$14+2B=198$

$184=2B\\92=B\\A=106$

CHECK:

$106+92=198\\198=198$

$106-92=14\\14=14$

You might be interested in

Which description best describes the solution to the following system of equations? (4 points)

UNO [17]

Answer:

Step-by-step explanation: was the same same

8 0

3 years ago

Read 2 more answers

Which is bigger square root of 1001 - square root of 1000 or 1/10?

IgorC [24]

Square root of 1001=10.0033
square root of 1000=10
so 10.0033-10=0.0033
1/10=0.1
so, 1/10 is bigger than square root of 1001- square root of 1000

8 0

3 years ago

The surface area of this rectangular prism is 14,664 square yards. What is the value of z?

worty [1.4K]

The value of z is 13,184 because you first multiply 37 times 40 and you get 1,480 , so then you subtract the area which is 14,664 minus 1,480 and the answer you get is z

6 0

3 years ago

What is the solution of the equation over the complex numbers

denis-greek [22]

Answer:

$2i\sqrt{3}$

$-2i\sqrt{3}$

Step-by-step explanation:

$x^2 + 12$

First set the equation to 0

$x^2 + 12$

$x^2 + 12 = 0$

Second, get the 12 on the right side of the equal sign by adding a -12 to each side

$x^2 + 12 = 0$

$x^2 + 12 + (-12) = 0 -12$

$x^2 = -12$

Square root both sides of the equal sign.

$x^2 = -12$

$\sqrt{x^2} = \sqrt{-12}$

Take the square root on left sides of the equal sign.

$\sqrt{x^2} = \sqrt{-12}$

$x = \sqrt{-12}$

Take the square root on the right side of the equal sign. Remember $\sqrt{-1} = i$

$x = \sqrt{-12}$

$x = \sqrt{4}*\sqrt{-1}\sqrt{3}}$

$x = 2i\sqrt{3}$

AND

$x = -2i\sqrt{3}$

8 0

3 years ago

What is the the volume of this? Also you can explain just make the explanation short

fgiga [73]

15×20×10=3000
10×20×15=3000
3000+3000=6000 $cm^{2}$

6 0

3 years ago