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Dovator [93]
3 years ago
8

Can y’all help please

Mathematics
1 answer:
kirill115 [55]3 years ago
5 0
SOH
Sin-1(57/100)= 34.75022575
So the answer could be 35
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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
During her eight-hour shift, Sami vacuumed 104 cars. How many cars can Sami vacuum per hour?
Nadusha1986 [10]
104/ 8 = 13.

Every hour she vacuumed 13 cars.
7 0
3 years ago
Read 2 more answers
Is 12 a prime or composite? (Can someone clearly explain what a prime and composite are?)
inn [45]
12 is a composite number.

Composite Number-A whole number that can be divided evenly by numbers<span> other than 1 or itself.

Prime Number- </span> A Prime Number<span> can be divided evenly only by 1, or itself. </span>
5 0
3 years ago
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Point C has the coordinates (–1, 4) and point D has the coordinates (2, 0). What is the distance between points C and D?
QveST [7]
\bf \textit{distance between 2 points}\\ \quad \\&#10;\begin{array}{lllll}&#10;&x_1&y_1&x_2&y_2\\&#10;%  (a,b)&#10;C&({{ -1}}\quad ,&{{ 4}})\quad &#10;%  (c,d)&#10;D&({{ 2}}\quad ,&{{ 0}})&#10;\end{array}\qquad &#10;%  distance value&#10;d = \sqrt{({{ x_2}}-{{ x_1}})^2 + ({{ y_2}}-{{ y_1}})^2}&#10;\\\\\\&#10;CD=\sqrt{[2-(-1)]^2+(0-4)^2}\implies CD=\sqrt{(2+1)^2+(-4)^2}&#10;\\\\\\&#10;CD=\sqrt{9+16}\implies CD=\sqrt{25}\implies CD=5
6 0
3 years ago
Read 2 more answers
Zaria is making pipe cleaner flowers for
SVEN [57.7K]

We can get the answer by dividing 215 by 3

What is dividing?

One of the four fundamental arithmetic operations, or ways to combine numbers to create new ones, is division. The other operations are multiplication, addition, and subtraction. The process of counting the instances in which one integer is included into the others is the most fundamental definition of the division of two natural numbers. This amount need not be an integer. For instance, if twenty apples are divided equally among four people, everyone will get five of them.

We can get the answer by dividing 215 by 3

215/3 = 71.67

Hence, 71 flowers are made

To know more about dividing, click on the link

brainly.com/question/1622425

#SPJ9

6 0
1 year ago
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