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ra1l [238]
3 years ago
8

If x= 1/2y the which expression represents? 1/x A 1/2yB -1/2yC 2yD -2y​

Mathematics
1 answer:
slega [8]3 years ago
3 0

Answer:

c

Step-by-step explanation:

1/(1/2)

2

y=2

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Rewrite the expression in the form x^n
LUCKY_DIMON [66]

Answer:

x^{-2}

Step-by-step explanation:

\frac{x^{6}}{x^{8}}\\ = x^{6-8} = x^{-2}

6 0
3 years ago
a scientist studying where American Indians once lived discovered 137 pots in the first location and 243 in the second how many
natulia [17]

Answer:

106

Step-by-step explanation:

just subtract 243-137

4 0
3 years ago
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Marcy played the piano for 45 minutes.She stopped playing at 4:15 P.M.At what time did she start playing the piano
musickatia [10]
15-45=-30
60-30=30
so the answer is 3:30
3 0
4 years ago
Use cosine to find the missing value round to 2 decimal places #trigonometry
Naddika [18.5K]

Answer:

1. 17.27 cm

2. 19.32 cm

3. 24.07°

4. 36.87°

Step-by-step explanation:

1. Determination of the value of x.

Angle θ = 46°

Adjacent = 12 cm

Hypothenus = x

Using cosine ratio, the value of x can be obtained as follow:

Cos θ = Adjacent /Hypothenus

Cos 46 = 12/x

Cross multiply

x × Cos 46 = 12

Divide both side by Cos 46

x = 12/Cos 46

x = 17.27 cm

2. Determination of the value of x.

Angle θ = 42°

Adjacent = x

Hypothenus = 26 cm

Using cosine ratio, the value of x can be obtained as follow:

Cos θ = Adjacent /Hypothenus

Cos 42 = x/26

Cross multiply

x = 26 × Cos 42

x = 19.32 cm

3. Determination of angle θ

Adjacent = 21 cm

Hypothenus = 23 cm

Angle θ =?

Using cosine ratio, the value of θ can be obtained as follow:

Cos θ = Adjacent /Hypothenus

Cos θ = 21/23

Take the inverse of Cos

θ = Cos¯¹(21/23)

θ = 24.07°

4. Determination of angle θ

Adjacent = 12 cm

Hypothenus = 15cm

Angle θ =?

Using cosine ratio, the value of θ can be obtained as follow:

Cos θ = Adjacent /Hypothenus

Cos θ = 12/15

Take the inverse of Cos

θ = Cos¯¹(12/15)

θ = 36.87°

8 0
3 years ago
Find the slope of the line that passes through (-26, 9) and (32, 71).
klio [65]

Answer:

Slope = \frac{31}{29}

Step-by-step explanation:

<u>Step 1:  Define the slope formula</u>

Slope = \frac{y_{2}-y_{1}}{x_{2}-x_{1}}

<u>Step 2:  Find the slope</u>

Slope = \frac{71-9}{32-(-26)}

Slope = \frac{62}{58}

Slope = \frac{31}{29}

Answer:  Slope = \frac{31}{29}

5 0
3 years ago
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