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Veronika [31]
3 years ago
14

If ab parallel to CD then the value of x is find the attached image ​

Mathematics
1 answer:
dem82 [27]3 years ago
7 0

Answer:

the answer is referred from the books or ask your teacher

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What is 10,000 ÷ 70?
Shkiper50 [21]

Answer:

142.857143

Step-by-step explanation:

calculator lol

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3 years ago
Find the domain of y= 2x +1.
Nesterboy [21]
Answer: All real numbers

Step-by-step Explanation: The domain is a set of all the input values for which the function is defined. That basically means that it's a set of all the possible values of the x-coordinate for a function. In a non vertical linear function, the line stretches forever in both directions of the x-axis, so the domain is all real numbers.
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3 years ago
Read 2 more answers
A lab technician needs 60mL of 25% acid solution for a certain experiment , but he has only 10% solution and 40% solution. How m
V125BC [204]

Answer:

  • 10%: 30 mL
  • 40%: 30 mL

Step-by-step explanation:

The needed concentration is exactly halfway between the available concentrations, hence they must be mixed equally.

He should mix 30 mL each of the 10% and 40% solutions.

_____

The first step in solving any problem is to look at the given information, and at what is being asked for. Here, the mix that is being asked for is exactly halfway between the given concentrations, so you know without any further contemplation that the mix will be 50%/50% of each.

__

If the mix were something else, there are several ways the problem can be solved. I like to use a diagram that puts the available concentrations on the left in a column with the highest on top, the needed concentration in the next column in the middle, and the differences of these numbers on the diagonals in the right column.

<u>Example</u>: if the needed mix is 15%, the diagram would look like ...

   40            5

          15

   10           25

The numbers on the right tell you the proportions required (5:25 = 1:5). For this example, you need 1 part 40% solution and 5 parts 10% solution to make a mix that is 15%. That's a total of 6 parts, so each "part" is 10 mL for 60 mL of solution.

We chose this example so every number in the diagram is different, so you could see how the instructions for use apply.

__

Another way to solve this is to let a variable represent the amount needed of <em>the highest concentration</em>. If we let that variable be x, for the given problem, we can write the equation for the amount of acid in the mix as ...

  40%(x) + 10%(60 -x) = 25%(60)

  0.30x = 9 . . . . . . . . subtract 6, simplify

  x = 9/0.30 = 30 . . . . . mL of 40% solution

6 0
3 years ago
Find the product of 2 1/3 × 3/5
inysia [295]

Answer: exact form: 7/5

Decimal form: 1.4

Mixed form: 1 2/5

Step-by-step explanation:

8 0
3 years ago
ON TIMER!!!
Anton [14]

Answer:

I'm sure it is 180 degrees

8 0
3 years ago
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