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Rashid [163]
2 years ago
7

Temperature rises from 60F to 72F. What is the percent increase​

Mathematics
1 answer:
Vesnalui [34]2 years ago
4 0

Answer:

20%

Step-by-step explanation:

percentage increase is calculated as

\frac{increase}{original} × 100%

increase = 72 - 60 = 12 and original temperature is 60 , then

percentage increase = \frac{12}{60} × 100% = 0.2 × 100% = 20%

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Find the value of x.
son4ous [18]

Answer:

18.0

Step-by-step explanation:

==>Given:

Triangle with sides, 16, 30, and x, and a measure of an angle corresponding to x = 30°

==>Required:

Value of x to the nearest tenth

==>Solution:

Using the Cosine rule: c² = a² + b² - 2abcos(C)

Let c = x,

a = 16

b = 30

C = 30°

Thus,

c² = 16² + 30² - 2*16*30*cos 30°

c² = 256 + 900 - 960 * 0.8660

c² = 1,156 - 831.36

c² = 324.64

c = √324.64

c = 18.017769

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8 0
3 years ago
Which function represents g(x), a reflection of f(x) = (3)x across the y-axis?
Artyom0805 [142]

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Step-by-step explanation:

We know that if a figure is reflected across y axis then its y coordinate remains same but the x coordinate changes its polarity.

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Now, the given function :f(x)=(3)^x

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g(x)=f(-x)=(3)^{-x}

7 0
3 years ago
Sinxcosxtanx=1-cos^2x
ycow [4]

Step-by-step explanation:

sin  x \: cos  x \: tanx = 1 -  {cos}^{2} x \\ LHS \\= sin  x \: cos  x \: tanx \\  =sin  x \: cos  x \: \times  \frac{sin  x}{cos  x}  \\  = sin  x \: \times  \frac{sin  x}{1} \\  ={sin}^{2}  x \\  = 1 -  {cos}^{2} x \\  = RHS \\  \therefore \: sin  x \: cos  x \: tanx = 1 -  {cos}^{2} x \\ Hence \: Proved.

7 0
3 years ago
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klasskru [66]

Answer:

\frac{4}{9}  

Step-by-step explanation:

\frac{2}{3} * \frac{2}{3}

you multiply across, so you do 2*2 for the numerator, then 3*3 for the denominator. This would equal 4 as the numerator, 9 as the denominator,  which is \frac{4}{9}  

4 0
3 years ago
Im going to give 20 points for this question please answer.
bearhunter [10]
The answer is 204 square units
3 0
3 years ago
Read 2 more answers
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