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2 years ago

How many square roots dose the number 20 have

Mathematics

1 answer:

ss7ja [257]2 years ago

7 0

Answer:

The awnser is 4.472135955

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At 82°F, a certain insect chirps at a rate of 61 times per minute, and at 91°F, they chirp 124 times per minute. Write an equati

Ganezh [65]

Answer:

$y=7x-513$

Step-by-step explanation:

Let

x----> the temperature in degrees Fahrenheit

y ---->insect chirping rate in times per minute

we have the ordered pairs

(82,61) and (91,124)

step 1

Find the slope

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute the values

$m=\frac{124-61}{91-82}$

$m=\frac{63}{9}=7$

step 2

Find the equation of the line

we know that

The equation in slope intercept form is equal to

$y=mx+b$

where

m is the slope

b is the y-intercept

we have

$m=7$ ---> the units are chirps per minute/degree F

take the point (82,61)

substitute and solve for b

$61=7(82)+b$

$61=574+b$

$b=-513$

substitute

$y=7x-513$

4 0

2 years ago

2(6 – x) – (9x + 2) = 4 + 8(x – 4)

Crank

Answer:

1.526

Step-by-step explanation:

12-2x-9x-2 = 4+8x-32

-11x+10 = 8x-28

-19x = -29

x = 1.526

4 0

2 years ago

4. Let f(x) = 2x +1 and g(x) = x². Find (gºf)(a).

PolarNik [594]

Answer:

Step-by-step explanation:

hello :

f(x) = 2x +1 and g(x) = x².

(gºf)(a)= g(f(a)) = g(2a+1) = (2a+1)² = 4a²+4a+1

3 0

2 years ago

At the carnival, 3 rides on the MoonCoaster cost $21. How much<br> do 5 rides cost?

Bogdan [553]

Answer:

$35 dollars

Step-by-step explanation:

So we know that 3 rides costs $21. If you then take 21/3 you get 7, you're then going to take 7x5 and you will get 35. Therefore 5 rides on the MoonCoaster cost $35. Hope this helps!

4 0

2 years ago

Read 2 more answers

Convert the following angle from degrees to radians. Express your answer in simplest

Zigmanuir [339]

(150*pi)/180= 2.617 radians

8 0

2 years ago