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tensa zangetsu [6.8K]
3 years ago
14

Help please and thank you

Mathematics
1 answer:
Otrada [13]3 years ago
3 0

Answer:

For the first one im pretty sure its 81

For the second one, Im pretty sure its 30.

sorry if theyre wrong... :(

Step-by-step explanation:

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the temperature of water in a lake at 9 a.m. is -2.6 by noon the temperature of the water rises by 5.1 Celsius by 9 p.m. the tem
Nataly [62]

Answer:toes

Step-by-step explanation:

2e equals toes

3 0
4 years ago
A collection of quarters and dimes is worth $14.90. There are 80 coins in all. Find how many of each there are in the collection
sashaice [31]

The trick here is to relate the NUMBER of coins to each other in one equation, and then the VALUE of the coins in another equation. If I have 1 dime, that 1 dime is worth 10 cents. The number of dimes is obviously not equal to the value. Let's call quarters q and dimes d. The number of these 2 types of coins added together is 80 coins. So q + d = 80. Now, we know that quarters are worth .25 and dimes are worth .1, so we express a quarter's worth as .25q; we express a dime's worth as .1d. The value of the coins we have is 14.90. So that equation is .25q + .1d = 14.90. Let's solve the first equation for q. q = 80 - d. We can now use that as a substitution for q into the second equation, giving us an equation with only 1 unknown, d. .25(80-d) + .1d = 14.90. Distributing through the parenthesis we have 20 - .25d + .1d = 14.90. Combining like terms gives us - .15d = - 5.1. We will divide both sides by - .15 to get that the number of dimes is 34. If we had a total of 80 coins, then the number of quarters is 80 - 34, which is 46. 46 quarters and 34 dimes

7 0
4 years ago
I need help please :(((;
Galina-37 [17]

Answer:

yes because of the lines they are the same on both triangles

Step-by-step explanation:

3 0
3 years ago
the Johnson's pay $9.95 a month plus $.035 per min for local phone service. last month, they paid $12.75. How many minutes of lo
Dmitry_Shevchenko [17]
What do you think the answer is? Tell me and I will help you some more! :)
6 0
3 years ago
The picture above tap and tell me yes or no in order thank you :)
artcher [175]

Step-by-step explanation:

no,yes,no, d is probably yes I guess

4 0
3 years ago
Read 2 more answers
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