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NNADVOKAT [17]
2 years ago
10

1. Simplify: -7a²b-2a2b A. -9 B. -9a²b C. -5a2b D. -5

Mathematics
1 answer:
cupoosta [38]2 years ago
6 0

Answer:

D IS YOUR FINAL AWNSER BECAUSE U HAVE TO MULTIPLY THE NU<BER TO THE AWNSER

Step-by-step explanation:

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Using the sine rule, calculate the length y. Give your answer to 2 s.f.​
Tpy6a [65]

Answer:

y = 9.84 mm

Step-by-step explanation:

<h2>Sine rule:</h2>

Law of sine:

   \sf \boxed{\bf \dfrac{a}{Sin \ A}=\dfrac{b}{Sin \ B}= \dfrac{c}{Sin \ C}}

    a = y

    A = 31°

   b  = 17 mm

    B = 117°

\sf \dfrac{y}{Sin \ 31^\circ}=\dfrac{17}{Sin \ 117^\circ}\\\\

          \sf y = \dfrac{17}{Sin \ 117^\circ}*Sin \ 31^\circ\\\\  y = \dfrac{17}{0.89}*0.515\\\\y = 9.84 \ mm

8 0
2 years ago
The mean of this data set is 9. What number is missing?<br><br> 11,20,_,3,1
kherson [118]
Let the missing number be x

Mean is the total sum of data over the number of data therefore,

(11+20+x+3+1) / 5 = 9
Then simplify
(35 + x) / 5 = 9
Then multiply 5 to both sides
35 + x = 45
Then subtract 35 to both sides to find x
X= 10

Hope this helps!

7 0
2 years ago
Which of the following mapping diagrams does not represent a function?
Tamiku [17]

Answer:

you'll have to add the answer choices because we can't see what the choices are!

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
beena has a cumulative deposit account rs.400 per month at 10% per annum simple interest. if she gets rs.30100 at the time of ma
Dima020 [189]

Answer:T=1.54yr

Step-by-step explanation:

Formulate for simple interest

I=prt/100

T=100I/pr

T=100×400×12/30100×10

T=1.54yr

6 0
3 years ago
Which diagram could be used to prove<br> ABC - ADEC using similarity transformations?
Simora [160]

Answer:

the answer is C

Step-by-step explanation:

8 0
3 years ago
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