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Leto [7]
3 years ago
7

I don’t understand this math at all someone please help !

Mathematics
2 answers:
slavikrds [6]3 years ago
5 0
I believe the answer is -21i
AfilCa [17]3 years ago
4 0
-21 is the answer!! hope it helps <3
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Suppose that the first team member in a 3-person relay race must run 2 1/4 laps, the second team member must run 1 1/2 laps, and
Kisachek [45]

You need to add up all 3 mixed numbers to find the total laps.

2 + 1/4 + 1 + 1/2 + 3 + 5/8 =

(2 + 1 + 3) + (1/4 + 1/2 + 5/8) =

6 + (2/8 + 4/8 + 5/8) =

6 + (11/8) =

6 + (1 + 3/8) =

7 3/8 laps


6 0
3 years ago
Read 2 more answers
Find the 20th term of an A.P whose first term is 102 and common difference -3
Irina-Kira [14]

A(20) = a+(20-1)d

A(20) = 102+(19)(-3)

A(20) = 102-57 = 45

8 0
3 years ago
HELP ME PLEASSDJDJXKKCKCKC
attashe74 [19]

the answers is

1 Inch = 4 Feet


Here is the explanation -


the side of square = 12


length of Ground - 48


ratio of length = 12 /48


= 1/4


1 : 4

bye

7 0
2 years ago
A bowling alley charges $3 to rent shoes. Four friends each pay for one game and for renting
Aleksandr [31]

Answer:

3(4)+g=28

Step-by-step explanation:

3 is the cost of one pair of shoes and 4 is how many shoes were rented. you multiple the 3 times 4 and get 12 and to get the amount of one game you have to subtract the total amount. the equation I came up with might not be what your teacher wants but thats a start. hope it helped!

3 0
2 years ago
Rajan needs 1 liter of 15% hydrochloric acid solution for an experiment. He checks his storage cabinet, but he only has a 5-lite
Delvig [45]

Answer:

  1. <em>0.75</em><em> liters of 5% hydrochloric acid solution </em>
  2. <em>0.25</em><em> liters of 45% hydrochloric acid solution.</em>

Step-by-step explanation:

Let us assume that, x liters of the 5% hydrochloric acid and y liters of the 45% hydrochloric acid solutions are combined.

As Rajan need total of 1 liter of solution, so

x+y=1

i.e x=1-y --------------------1

As Rajan needs 5% hydrochloric acid and 45% hydrochloric acid to make a 1 liter batch of 15% hydrochloric acid, hence acid content of the mixture of two acids will be same as of the final one, so

0.05x+0.45y=1\times 0.15

i.e 5x+45y=15 -------------2

Putting value of x from equation 1 in equation 2,

\Rightarrow 5(1-y)+45y=15

\Rightarrow 5-5y+45y=15

\Rightarrow 5+40y=15

\Rightarrow 40y=15-5=10

\Rightarrow y=0.25

Putting the value of y in equation 1,

x=1-0.25=0.75

Therefore, Rajan must use 0.75 liters of 5% hydrochloric acid solution and 0.25 liters  of 45% hydrochloric acid solution.

4 0
3 years ago
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