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antoniya [11.8K]
4 years ago
9

A(n) ______ is a letter or symbol that represents some unknown value.

Mathematics
1 answer:
Nuetrik [128]4 years ago
4 0
The answer is "variable"

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(Its multiple choice)
Ludmilka [50]

Answer:20h + 21 is the only one equivalent to 4(5h + 4) + 5

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Monica is tiling her roof. she tiles 3 3/7 square ft in 25 minutes. how many square feet will monica tile in 1 hour
ivann1987 [24]
<span>7.89 square ft. 60/25 = 2.3  Multiply that by 3 3/7.</span>
7 0
4 years ago
Please help I don't under stand how to do this ​
stealth61 [152]
You want to figure out what the variables equal to, all of these are parallelograms meaning opposite sides and angles are equal to each other.

In question 1 start with 3x+10=43, this means that 3x is 10 less than 43 which is 33, 33 divided by 3 is 11 meaning x=11.

Same thing can be done with the sides 124=4(4y-1), start by getting rid of the parentheses with multiplication to get 124=16y-4, this means that 16y is 4 more than 124, so how many times does 16 go into 128? 8 times, so x=11 and y=8

Question 2 can be solved because opposite angles are the same in a parallelogram, so u=66 degrees

You can find the sum of the interial angles with the formula 180(n-2) where n is the number of sides the shape has, a 4 sided shape has a sum of 360 degrees, so if we already have 2 angles that add up to a total of 132 degrees and there are only 2 angles left and both of those 2 angles have to be the same value then it’s as simple as dividing the remainder in half, 360-132=228 so the other 2 angles would each be 114, 114 divided into 3 parts is 38 so u=66 and v=38

Question 3 and 4 can be solved using the same rules used in question 1 and 2, just set the opposite sides equal to each other
6 0
2 years ago
In a town , 150 people need 800 filters of water to drink everyday . At a festival time how many liters of water do they need to
timama [110]

Answer: 400 liters

Step-by-step explanation:

set up a proportion and solve.

150/800 = 75/x

150x = 60,000

divide by 150

x = 400

3 0
3 years ago
HEYYYYY YOUU YESS YOUUUUUU \
AleksAgata [21]

Answer:

the indian reservation has an effect on  the right of occupancy by U.S. citizens, American Indians and Alaska Natives are generally subject to federal, state, and local laws. On federal Indian reservations, however, only federal and tribal laws apply to members of the tribe, unless Congress provides otherwise.      

dang the somebody else put the same thing

4 0
3 years ago
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