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stellarik [79]
3 years ago
15

Solve the problem by entering and solving an equation.

Mathematics
2 answers:
Sphinxa [80]3 years ago
5 0

Answer:

-22

Step-by-step explanation:

−30 =  

5

9

(x − 32)  

Solve the equation.

9

5

(−30) =  

9

5

(  

5

9

(x − 32)) Multiply both sides by  

9

5

.

 

−54 = x − 32  

+32  + 32 Add 32 to both sides.

−22 = x  

The temperature is −22 degrees Fahrenheit.

asambeis [7]3 years ago
3 0

Answer: -26.60

Step-by-step explanation:

Heres -30 degrees as faherenheit

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forsale [732]
Hi, I'd be glad to help you with this equation!

The answer is (9) 

Hope this helps. 
Have a great day!
6 0
3 years ago
What is the average rate of change of h(x) over the interval -13
Ludmilka [50]
The average rate of change of h(x) in the closed interval [ a, b ] is

Here [a, b ] = [ - 2, 2 ], thus
f(b) = f(2) = × 2³ - 2² = 1 - 4 = - 3
f(a) = × (- 2)³ - (- 2)² = - 1 - 4 = - 5
average rate of change = = =
5 0
3 years ago
The length of a new rectangular playing field is 4 yards longer than triple the width. if the perimeter of the rectangular playi
jasenka [17]
The length is 4 yards longer than 3width so L = 3W+4
perimeter equal 408 yards

perimeter equal 2L +2W = 2(3W+4)+2W 

408 = 6W +8 +2W
400=8W

W = 50

L = 3*50 +4 = 154

L = 154
W = 50

P = 2L +2W
408 = 2*50 +2*154
408 = 100 +308
408 = 408

hope that this is easy understandably 
8 0
3 years ago
hi:) I’m not sure if this is correct. For the justifying part , must I still use the discriminant or can I just say that since t
labwork [276]

You did it right (almost, I got 21 instead of 19) but didn't finish.  You need to show your discriminant is never negative.

x² + (p+1)x = 5-2p

x² + (p+1)x +(2p-5) =0

Real roots mean a positive (or at least non-negative) discriminant:

D = b² - 4ac = (p+1)² - 4(1)(2p - 5) = p² + 2p + 1 - 8p + 20

D =  p² - 6p + 21

It's not totally obvious that D>0; we prove that by completing the square by noting

(p-3)² = p² - 6p + 9

so

p² - 6p = (p-3)² - 9.

D =  p² - 6p + 21

D =  (p-3)² - 9 + 21

D = (p-3)² + 12

Now we clearly see D>0 always because the squared term can't be negative, so D is always at least 12.   We always get two distinct real roots.

3 0
3 years ago
Solve for the value of x 3x - 9 + 12 - 6x = -18
Zinaida [17]

Answer:

x=7

Step-by-step explanation:

3x-9+12-6x=-18

now let’s put together the like terms

3-3x=-18

-3x=-21

now we divide -21 By -3

the result is

x=7

5 0
3 years ago
Read 2 more answers
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