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natali 33 [55]
3 years ago
13

I WILL GIVE BRAINLIEST IF YOUR ANSWER IS CORRECT

Mathematics
1 answer:
telo118 [61]3 years ago
6 0

Answer:

1. 4.5 g

2. 56.25 g

Step-by-step explanation:

3 % substance solution means :

3 g of dry substance is present in 100 g of solution.

By unitary method:

The weight of dry substance in 1 g of solution = \frac{3}{100}

The weight of dry substance in 150 g of solution = \frac{3}{100}\times150=4.5\ g

Let the weight of solution be w.

8 % solution contains 8 g dry substance in 100 g.

We have to find the weight of the solution(w) which contains 4.5 g of dry substance.

⇒ \frac{8}{100}\times w=4.5\\w=\frac{450}{8}=56.25\ g.

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What would be the first step to solving the equation? K+2=5
MrRissso [65]

Answer:

subtract 2 from both sides

Step-by-step explanation:

if you subtract 2 from both sides you will get k=3

6 0
2 years ago
Can you please help me figure out how the answer is 1/9 im getting 9​
timama [110]
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6 0
3 years ago
Using addition rules, show how to add the two real numbers. 7 + (-14)
Debora [2.8K]
Hello there! Using the rules of addition, we can identify that when adding a positive to a negative number, the result shifts toward the positive side but takes the sign of the greater number. It will be demonstrated in this problem to simplify how problems like this are solved:

Step 1: Rewrite the problem

-14 + 7 = ?

Step 2: Since we’re adding 7 to a negative number, that means the negative number decreases by the quantity it’s being added by.

This means we would have to really subtract 7 from 14 to get 7.

Step 3: Keep the sign of the greater number

Since 14 is greater than 7, we will keep the negative sign in accordance.

Step 4: Simplify

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Using the rules of addition, we will find that -14 + 7 = -7. If you need additional help, let me know and I will gladly assist you.
5 0
1 year ago
Read 2 more answers
(08.03)
VMariaS [17]

Answer:

rearrange them properly to get

x-y=7

-3x+y=12

( by elimination method)

x-y = 7

-3x+y=

(x+ –3x) + (–y+y) = (7+12)

-2x+0= 19

x= -9.5

from eqn(i)

x-y=7

-9.5 - y=7

-y=16.5

y= -16.5

8 0
2 years ago
Please help.................
evablogger [386]
It usually works well to do what the instructions tell you. Multiply each diameter by 3.14.

a) 3.14×6 cm = 18.84 cm

b) [can't read the picture]

d) 3.14×9 in = 28.26 in

e) 3.14×11 mm = 34.54 mm
7 0
3 years ago
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