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3 years ago

What's the solution of x+2/5= 12 ?

Mathematics

2 answers:

Feliz [49]3 years ago

8 0

Answer:

11 3/5

Step-by-step explanation:

x+2/5=12

First, you subtract 2/5 from both sides, so the equation becomes:

x=11 3/5

Therefore, x equals 11 3/5

valkas [14]3 years ago

4 0

Answer:

i got x=62/5 =12.400

Step-by-step explanation:

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Two numbers have difference of 0.7 and a sum of 1. What are the numbers?

algol [13]

We can solve this by setting up 2 equations. We can use any letters like. For now, I'll use x and y.
So now we know that    x - y = 0.7   and    x + y = 1.
Now we can eliminate one of the letters by adding or subtracting one equation from the other. I am going to eliminate y by adding the two together (the y and the -y cancel).
This gives us   2x = 1.7,    and so x = 1.7 ÷ 2 = 0.85
Finally, we can substitute x for 0.85 back into one of the original equations to figure out what y equals. I'm going to use   x + y = 1.
So now we have   0.85 + y = 1,    so y = 1 - 0.85 = 0.15

The numbers, therefore, are 0.85 and 0.15 (you can check by using the other equation).

Hope this helps!

4 0

3 years ago

6x+8y=5 and 3x+4y=-2

Feliz [49]

ANSWER If you solve for x you get -4/3 y+5/6 If you solve for y you get -3/4x +5/8.

Step-by-step explanation

and then the second answer is

If you solve for x you get-4/3y +-1/2

If you solve for y you get -3/4x +-1/2

3 0

3 years ago

The crew on a fishing boat caught 4 fish that weighed a total of 1,092 pound. The tarpon weighed twice as much as the amberjack

Savatey [412]

ddddd

Let T be the weight of Tarpon

Let A be the weight of amberjack

Let W be the weight of white marlin

Let TU be the weight of Tuna

The crew on a fishing boat caught 4 fish that weighed a total of 1,092 pound.

Total weight = 1092

T + A + W + TU = 1092

The tarpon weighed twice as much as the amberjack

T= 2 A

the white marlin weighed twice as much as the tarpon.

W = 2 T

We know T is 2A so W = 2(2A) = 4 A, W = 4A

The weight of the tuna was 5 times the weight of the Amber jack.

TU = 5A

T = 2A , W = 4A , TU = 5A

Replace it in our equation

T + A + W + TU = 1092

2A + A + 4A + 5A = 1092

12A = 1092

Divide both sides by 12

A = 91

the weight of amberjack = 91 pounds

the weight of white marlin = 4A = 4(91) = 364 pounds

the weight of Tarpon = 2A = 2(91) = 182 pounds

the weight of Tuna= 5A = 5(91)=455 pounds

7 0

3 years ago

The equation below describes a parabola. If a is negative, which way does the parabola open? x = ay2

Anastasy [175]

This type of parabola opens either to the left or to the right. The negative makes it open to the left.

8 0

3 years ago

Read 2 more answers

The diameter of a circle is 7 cm. Find the circumference to the nearest tenth

Anton [14]

Answer:38.5 cm

Step-by-step explanation:To find the radius divide 7 by 2 which is 3.52. Then multiply 3.5 by itself which is 12.253.

3 0

2 years ago