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melomori
14 days ago
12

If you add 0.43 to a certain number then subtract 0.58 from the result and then another 4.04, you’ll get 30.3. What is the certa

in number?
Please show how you did it.
Mathematics
2 answers:
Leona [9.2K]14 days ago
8 0
Let's designate the number as x. Next, we can formulate an equation to assist in solving the problem.
(((0.43+x)-.58)-4.04) = 30.3
(0.43+x)-4.64 = 30.3
x-4.21 = 30.3
x = 30.3 + 4.21
x = 34.51

The final answer is 34.51, and that's how it was solved. Have a nice day!
tester [8.8K]14 days ago
4 0

Answer:

34.49

Step-by-step explanation:

You reverse the process

30.3+4.04=34.34

34.34+0.58=34.92

34.92-0.43=34.49

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Which of these conditions might be true if polygons ABCD and KLMN are similar? The measures of corresponding angles of ABCD and
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Answer:  The correct choice is

(A) The angles of ABCD and KLMN corresponding to each other are equal, but the sides of ABCD are half the length of those in KLMN.

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Two polygons are considered SIMILAR when their corresponding angles are congruent and the sides are in proportion.

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In option (A), we see

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Moreover, the lengths of corresponding sides of ABCD are half those of KLMN.

Thus, we can deduce

AB=\dfrac{1}{2}KL,~~BC=\dfrac{1}{2}LM,~~CD=\dfrac{1}{2}MN,~~AD=\dfrac{1}{2}KN\\\\\\\Rightarrow \dfrac{AB}{KL}=\dfrac{BC}{LM}=\dfrac{CD}{MN}=\dfrac{AD}{KN}=\dfrac{1}{2}.

Consequently, the corresponding sides are proportional.

Therefore, option (A) holds true if the two polygons are similar.

3 0
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Answer:

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Answer:

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