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3 years ago

Someone help answer the bottom 4 pls I'll brainlist u !!

Mathematics

1 answer:

NISA [10]3 years ago

3 0

Hdhdhdhpenishdhdhdhdhindhhdhdhyourhdhdhdhdhdhnouthdhhdhdhdh

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(a)

lukranit [14]

Answer:

0.782

2.1%

Step-by-step explanation:

4 0

2 years ago

How do you subtract 42 minutes from 1 hour 25 minutes? explain what to do and why to do it.

ikadub [295]

Answer:

Step-by-step explanation:

you change the 1 hour into minute you and 60min to 25 minutes and then you subtract from 42 minutes to get the solution

8 0

3 years ago

Which ordered pair is a solution of the equation? y=8x+3y=8x+3

Mrac [35]

Multiply the first equation by 4 (so that both equations will have 8x terms) and then subtract:

8x-20y = -24

8x +3y = 68

------------

0 -23y = -92

Now divide both sides by -23:

y = 4

Find x by plugging y=4 into either equation:

8x +3(4) = 68

8x = 68 - 12

8x = 56

x = 7

So the answer is ordered pair is (7,4)

3 0

3 years ago

Read 2 more answers

Noah and Lin are each trying to solve the equation x² - 6x + 10 = 0. They know that the solutions to x² = - 1 are i and -i, but

Leviafan [203]

Answer:

Solving the equation $x^2 - 6x + 10 = 0$ we get $x=3+i \ , \ x=3-i$

Step-by-step explanation:

Noah's step to solve the equation $x^2 - 6x + 10 = 0$ are:

$x^2 - 6x + 10 = 0\\x^2 - 6x = -10\\x^2 - 6x + 9 = -10 + 9\\(x-3)^2 = -1$

The next step is to take square root on both sides because: $\sqrt{x^2}=x$

$\sqrt{(x-3)^2}=\sqrt{-1} \\x-3=\pm\sqrt{-1} \\x=\pm(\sqrt{-1})+3 \\$

Now, we know that: $\sqrt{-1}=i$

$x=\pm(i)+3\\x=3+i \ , \ x=3-i$

So, Solving the equation $x^2 - 6x + 10 = 0$ we get $x=3+i \ , \ x=3-i$

8 0

3 years ago

(PICTURE PROVIDED)

Sonbull [250]

Answer:

A: She lined up the protractor incorrectly.

Hope it helps:)

7 0

3 years ago

Someone help answer the bottom 4 pls I'll brainlist u !!​

Someone help answer the bottom 4 pls I'll brainlist u !!