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AfilCa [17]
3 years ago
5

What is the value of F in the formula F=9/5C+32 when C=30?

Mathematics
2 answers:
kherson [118]3 years ago
8 0
I don't know i think is C
Anni [7]3 years ago
5 0

Answer:

111.6

Step-by-step explanation:

F = 9/5 ( c+32)

C= 30

Then F= 9/5 (30 + 32)

= 9/5 x 62

= 1.8 x 62

= 111.6 degrees Fahrenheit

But this answer is not in your options provided

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Last question plz help
Viktor [21]
the answer is 1,5 OK
3 0
3 years ago
Read 2 more answers
The scale of a map is 2 cm : 21 km. find the actual distance for 9 cm on the map.
DIA [1.3K]
I hope this helps you

if 2 cm 21 km

9cm ? km

?×2=9×21

?=189÷2

?=94,5 km
8 0
3 years ago
Read 2 more answers
Help please asap!!<br> A- z=15<br> B- z= 20<br> C- z=23<br> D- z=41
grigory [225]

Answer:

z = 15

Step-by-step explanation:

The sum S of the interior angles of a regular polygon is given by the formula

S = (n-2) x 180 where n is the number sides

Here n = 9

So S = (9-2) x 180 = 7 x 180 = 1,260

There are 9 interior angles and each angle is (5z + 65)

So the sum of all 9 interior angles = 9 (5z + 65)

= 45z + 585

Set these equal to each other and solve for z

45z + 585 = 1260

45z = 675

z = 675/45 = 15

4 0
1 year ago
6) The amount of Jen's monthly phone bill is normally distributed with a mean of $70 and a standard
alexandr402 [8]

Answer:

i)The correct option is  D.) 99.74%

ii) The correct option is B.) 68.26%

Step-by-step explanation:

i) P(10≤X≤70) = P(  (10−40)/10  ≤Z≤   (70−40 )/10 ) =  Pr(−3≤Z≤3)

= 0.9987 - 0.0013 = 0.99734

Therefore the percentage of Jen's monthly phone bills are between $40 and $100 is D.) 99.74%

ii)P(2.1≤X≤3.1) = P(  (2.1 − 2.6) /0.5   ≤ Z  ≤ (3.1−2.6 )/0.5)  =  Pr(−1  ≤Z  ≤1) )

=  0.8413 − 0.1587  =  0.6826

Therefore the percentage of students at college have a GPA between 2.1 a,d 3.1 is B.) 68.26%

5 0
3 years ago
Are the following polygons similar? If so what is the scale factor?
MrMuchimi

Answer: Yes, the scale factor is 10 :)

Step-by-step explanation:

8 0
2 years ago
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