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blsea [12.9K]
1 year ago
14

Help pleeease Im not sure what to do here D:

Mathematics
1 answer:
mart [117]1 year ago
4 0

Answer:

A and C

Step-by-step explanation:

Step 1: Replace x with 2.5 and see if it makes the equation correct.

A. |2 1/2 + x = 5| Since 2 and 1/2 is also written as 2.5, and 2.5+2.5=5, the solution makes this equation true.

B. |25x = 63| 25 x 2.5 equals 62.5, which does not make this equation true because 63 ≠ 62.5

C. |6.75x + 4.25x = 27.5| I Rewrite this equation as

(6.75 x 2.5) + (4.25 x 2.5) which can simplify to 16.875 + 10.625 and it does in fact equal 27.5, so this solution does make the equation true.

Step 2: Eliminate the equation(s) that aren't true, and then answer.

A and C are correct.

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You conduct a statistical test of hypotheses and find that the null hypothesis is statistically significant at level α = 0.05. Y
viktelen [127]

Answer:

Neither options one or two is true

Step-by-step explanation:

When we test a statistical hypothesis, we must specify a level of significance. It is this level of significance that presents the maximum probability at which we are willing to risk committing a type one error.

Therefore, it is independent of any other level of significance used.

Hence, we conclude that neither options one or two is true.

7 0
3 years ago
Question attached WORTH A LOT OF POINTS IM GOING TO MARK BRAINLIEST MAKE SURE IT IS EASY TO UNDERSTAND WITH NO SYMBOLS Pls
11111nata11111 [884]

Answer:

60.4°

Step-by-step explanation:

DF is a line, which means ∠DEF = 180°. We also know that ∠DEF = ∠DEB + ∠BEG + ∠GEF. We already know three of these measures, so we can solve for the other:

∠DEF = ∠DEB + ∠BEG + ∠GEF

180 = 110.2 + ∠BEG + 25.6

∠BEG = 44.2°

We know that lines AC and DF are parallel, and since ∠ABE and ∠BEF are alternate interior angles, by definition, ∠ABE = ∠BEF.

∠BEF = ∠BEG + ∠GEF = 44.2 + 25.6 = 69.8°

Then, ∠ABE = ∠BEF = 69.8°.

Again, since AC is a line, ∠ABC = 180°. We also know that ∠ABC = ∠ABE + ∠EBG + ∠GBC. Just like before, we already know three of these angles, so we can solve for the other:

∠ABC = ∠ABE + ∠EBG + ∠GBC

180 = 69.8 + ∠EBG + 34.8

∠EBG = 75.4°

Finally, since EBG is a triangle, we know that its interior angles add up to 180:

∠BEG + ∠EBG + ∠BGE = 180

Plug in the values we know:

44.2 + 75.4 + x = 180

x = 60.4°

3 0
3 years ago
Read 2 more answers
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Licemer1 [7]

Answer:

28

Step-by-step explanation:

Draw 7 round cookies and divide each into fourths.

7 cookies cut into fourths groves you 7*4=28 pieces of cookie.

5 0
4 years ago
Supposed you have a box containing 5 black marbles, 4 blue marbles and 2 red marbles. One marble is selected. Find the following
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You have 4/11 probability of pulling a blue marble. A 5/11 probability of pulling a black marble. A 2/11 probability of pulling a red marble.
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3 years ago
Please don’t guess I have to get this right
Murrr4er [49]
C is the correct answer
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4 years ago
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