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svetoff [14.1K]
3 years ago
12

Need help ASAP!!!!!!!

Mathematics
1 answer:
rodikova [14]3 years ago
7 0

Answer:

B

Step-by-step explanation:

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Solve the system of equations. <br>5y-4x = -7 <br>2y+4y = 14​
timofeeve [1]

Answer:

5y-4x= -7 :

Slope = \frac{1.600}{2.000} = 0.800

<em>x </em>- <em>intercept =  </em>\frac{7}{4} = 1.75000

<em>y - intercept =  - </em>\frac{7}{5} =  -1.40000  <------both of these numbers a negative

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

2y+4y = 14 :

<em>y = </em>\frac{7}{3} = 2.333

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<em>Hope this helped & good luck <333</em>

3 0
2 years ago
86 into scientific notation
Anna [14]

Answer:

8.6 x 10^1

hope i helped

7 0
3 years ago
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How can you use the properties of operations to evaluate this expression?<br> 18 + 4(28). Explain.
maxonik [38]

Answer:

130.

Step-by-step explanation:

18 + 4(28(

= 18 + 4 * 28   Multiplication is done before addition so we have:

18 + 112

= 130.

4 0
3 years ago
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An element with a mass of 890 grams decays by 19.7% per minute. To the nearest tenth of a minute, how long will it be until ther
Schach [20]

Answer:

3 minutes

Step-by-step explanation:

6 0
2 years ago
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BRAINLIESTT ASAP! PLEASE HELP ME :)
antiseptic1488 [7]

Step-by-step explanation:

\displaystyle y = Acos(Bx - C) + D

According to this trigonometric function, −C gives you the OPPOSITE terms of what they really are, so be EXTREMELY CAREFUL:

\displaystyle Phase\:[Horisontal]\:Shift → \frac{-\frac{2}{3}π}{2} = -\frac{π}{3} \\ Period → \frac{2}{2}π = π

Therefore we have our answer.

Extended Information on the trigonometric function

\displaystyle Vertical\:Shift → D \\ Phase\:[Horisontal]\:Shift → \frac{C}{B} \\ Period → \frac{2}{B}π \\ Amplitude → |A|

NOTE: Sometimes, your vertical shift might tell you to shift your graph below or above the <em>midline</em><em> </em>where the amplitude is.

I am joyous to assist you anytime.

3 0
3 years ago
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