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Zepler [3.9K]
3 years ago
14

I don't know how to do this, can someone explain me ​

Mathematics
1 answer:
Kaylis [27]3 years ago
5 0

Answer:

-8+√5a-5 =-3

√5a-5 =5

a=6

5(6)=30

30-5=25

√25=5

-8+5=-3

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AveGali [126]
The 3rd one down is the answer
7 0
3 years ago
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Holly has watched 39% of a movie that is 122 minutes long.
Scilla [17]

9514 1404 393

Answer:

  48 minutes

Step-by-step explanation:

39% of 122 is ...

  0.39 × 122 = 47.58 ≈ 48

Holly has watched about 48 minutes of the movie.

3 0
3 years ago
Help me to solve this please​
scZoUnD [109]

Answer:

-4/9

Step-by-step explanation:

We first calculate the first bracket.

[2/3-(-4/9)]

= (2/3+4/9) (we cancel out the negatives)

= (6/9+4/9) (common denominator)

= 10/9

Then we convert -2 1/2 into an improper fraction.

-2 1/2

= -5/2

Finally we calculate the division by swapping the numerator and denominator of -5/2.

10/9 / -5/2

= 10/9 * -2/5

= -20/45

= -4/9 (simplify the terms)

3 0
2 years ago
Can someone plz answer B and C
Shkiper50 [21]

B. 
When two lines intersect they form two pairs of opposite angles.
Vertical angles are always congruent, which means that they are equal.
so  m<7 = m<8 or m<3y + 19 = m<5y-29


C. solve for y and measure <7 and <8

 3y + 19 = 5y-29
5y - 3y = 19+29
2y = 48
y = 24

so
5y-29 = 5(24) - 29 = 91
3y + 19 = 3(24) + 19 = 91

so <7 = 180 - 91 = 89
<7 = <8 = 89
4 0
3 years ago
Find the slope of -8yx+5y=0
nevsk [136]

Answer:

0

Step-by-step explanation:

0, it is a flat line on a graph

8 0
2 years ago
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