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zloy xaker [14]
3 years ago
5

Add. (8a + 2b - 9) + (-11a - 5b + 4)

Mathematics
1 answer:
Valentin [98]3 years ago
4 0

Answer:

(-3a -3b -5)

Step-by-step explanation:

So you have to add numbers with same valuables

  1. 8a+(-11a) Answer: -3a
  2. 2b+(-5b) Answer: -3b
  3. -9+4 Answer: -5

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There are 45 boys and 54 girls in your school’s senior class. What is the ratio of boys to girls
strojnjashka [21]

Answer:

5/6

Step-by-step explanation:

The ratio is:

45 / 54

Or, reduced:

5 / 6

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3 years ago
Which describes the graph of y= (x - 4)2 - 1?
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Answer:

Step-Opens up with a vertex at (4,-1)by-step explanation:

4 0
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Which number has the greatest value? <br><br>a) 0.38<br>b) 08.2<br>c) 02.8<br>d) 2.80
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the correct answer would be b)8.2

Step-by-step explanation:


6 0
3 years ago
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P, Q &amp; R form a right-angled triangle.
Naya [18.7K]

Answer:

m<RPQ = 22°

Step-by-step explanation:

Given:

m<SRQ = 90°

PS = PQ

m<SQR = 46°

Required:

m<RPQ

Solution:

m<SQR + m<SRQ + m<RSQ = 180°

Substitute

46° + 90° + m<RSQ = 180°

m<RSQ = 180° - 136°

m<RSQ = 44°

Find m<PSQ:

m<PSQ = 180° - m<RSQ (Angles on a straight line

m<PSQ = 180° - 44° (Substitution)

m<PSQ = 136°

Find m<RPQ:

∆QSP is an isosceles triangle with two equal base angles. Therefore:

m<RPQ = ½(180° - 136°)

m<RPQ = 22°

4 0
3 years ago
Yolanda purchased a prepaid phone card for $25 . long distance calls cost 17 cents a minute using this card. yolanda used her ca
USPshnik [31]
So $25 - $17.35 = $7.65

7.65÷ 17 = 45
45 = 45 min
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3 years ago
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