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Ghella [55]
3 years ago
14

The measure of an angle is 51Á.

Mathematics
1 answer:
Fantom [35]3 years ago
4 0
Supplementary angles add up to 180°.
So the supplementary angle in this case:
180 - 51
= 129°
The answer is C
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If a pump takes 60 minutes to circulate 25 gallons of water, how many minutes does it take to circulate 2.5 gallons of water?
Marizza181 [45]
It takes 6 minutes to circulate 2.5 gallons of water
8 0
3 years ago
750 split in to the ratio 7:8
Alex787 [66]
Given:
total = 750
ratio = 7 : 8

We need to get the ratio of the number to its total

7 + 8 = 15 ; 7/15 and 8/15 is the ratio of the number to its total.

We multiply these ratio to the total of 750

7/15 * 750 = 350
8/15 * 750 = 400

7:8 is equal to 350:400


5 0
3 years ago
Lisa wants to use her calculator to square a two-digit positive integer, but she accidentally enters the tens digit incorrectly.
Svetradugi [14.3K]

Answer: Correct two digit number= 24

Step-by-step explanation:

Let

x= tens digit (wrong one)

and y= zeroes digit

and z= tens digit (right one)

Now according to the statement,

(10x+y)² -  (10z+y)² = 2340

Simplifying this we get

(x-z)(5x+y+5z)= 117= 1 * 3 * 3 * 13

So it could either be

x-z=1 or x-z=3

If we take the x-z=1

then 5x+y+5z=117

which is not possible as maximum value we can get from this is 99.

This leaves us with x-z=3

so 5x+y+5z= 39

Put x=3+z

We get,

y+10z= 24

Now as y and z both are single digits so the only possible numbers to fit these are y=4 and z=2.

Put z=2 in x=3+z , we get x=5

So the numbers become 10x+y= 54

and 10z+y= 24

Their sum is 54+24=78

Check

54²-24²= 2340 so it is correct.

7 0
3 years ago
Two angles of a triangle measure 78 and 24
Leviafan [203]

Answer: 78

Step-by-step explanation: Remember every triangle ads up to a total of 180 degrees. You just have to make sure that it adds up to 180

8 0
3 years ago
HELP ME ILL GIVE 25 POINTS
Sonbull [250]
△ABC~<span>△YZX
You just figure out what sides are similar to each other

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4 0
3 years ago
Read 2 more answers
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