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Aleksandr [31]
2 years ago
12

Please answer the questions

Mathematics
1 answer:
Naily [24]2 years ago
5 0

Answer:

1/18

Step-by-step explanation:

( {2}^{ - 3}  \times  {16}^{ \frac{1}{2} } ) \div ( {81}^{ \frac{3}{4} }  \times  {27}^{  - \frac{1}{3} } ) \\  \\  =( {2}^{ - 3}  \times  {2}^{ \frac{4 \times 1}{2} } ) \div ( {3}^{ \frac{4 \times 3}{4} }  \times  {3}^{  - \frac{3 \times 1}{3} } ) \\  \\=( {2}^{ - 3}  \times  {2}^{ 2} ) \div ( {3}^{ 3 }  \times  {3}^{  - 1 } ) \\  \\=( {2}^{ - 3 + 2} ) \div ( {3}^{ 3 - 1 }  )  \\  \\  =  {2}^{ - 1}  \div  {3}^{2}  \\  \\  =  \frac{1}{2}  \times  \frac{1}{9}  \\  \\  =  \frac{1}{18}

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Trigonometry help?? Thank you so much!!
liq [111]

Answer:

7) a = 60; b = 100

8) c = 20

9) d = 45

Step-by-step explanation:

7)

a + 120 = 180

a = 60

b + 80 = 180

b = 100

8)

5c + 4c = 180

9c = 180

c = 20

9)

3d + d = 180

4d = 180

d = 45

6 0
3 years ago
On Tuesday, Marissa was $45 short of her fundraising goal. The next day, she was $5 over her goal write an equation to show how
scoray [572]

Answer: Hello daema, let's let x be the goal and c be the collection per day.

x - 45 + c = x + 5 is the answer so now let's talk about how we did that.

So she wants to get to x which is the goal. But right now she has 45 less than what her goal is. So that would look like this x - 45 now she has to get c or the collection per day to get to her goal. So now it looks like this x - 45 + c. Now that c has to be at least x which is her goal, it now will look like this x - 45 + c = x. But we're not done, the question said that now she 5$ over her goal, or x. So we have to add the + 5 onto the end so now it looks like this x - 45 + c = x + 5. To solve the equation "if you have to" it would be x = 50$ per day.

4 0
3 years ago
If Ab = 54, find MC.
AnnyKZ [126]

Answer:

MC = 45

Step-by-step explanation:

Δ ABH and Δ MCH are similar and the ratios of corresponding sides are equal, that is

\frac{AB}{MC} = \frac{AH}{MH} , substitute values

\frac{54}{MC} = \frac{6}{5} ( cross- multiply )

6MC = 270 ( divide both sides by 6 )

MC = 45

8 0
3 years ago
Judy thought of a number, subtracted 11 from it, divided the result by 8 and then added seven to it and got an answer of 10. Wha
scZoUnD [109]
10+7=17
17 * 8=136
136+ 11= 147
6 0
3 years ago
If 3(c+d) = 5 whats is the value of c+d
spayn [35]

Answer:

c= 1 d=1

Step-by-step explanation:

3 0
3 years ago
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