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Mkey [24]
3 years ago
9

I NEEED HELP IN A COUPLE OF SECONDS.

Mathematics
1 answer:
GrogVix [38]3 years ago
6 0
It’s b.3 sry if I’m wrong
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How much water should be added to 12mL of ​7% alcohol solution to reduce the concentration to ​6%?
lana [24]

Answer:

7%*12=6%(12+x)

.84=.72+.06x

.06x=.12

x=2

how much water should be added to 12 mL of 7% alcohol to reduce concentration to 6%? 2 ML

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
- Tony had 4 equal sets of sports
Olenka [21]

Answer:

9 cards

Step-by-step explanation:

he originally had 36 cards before giving 5 away, 36 divided by 4 is 9

4 0
3 years ago
What is "common base width"?
evablogger [386]
Common base width is the variation from the width to the base.
8 0
4 years ago
Lauren bought 20 ounces of ham. She used 3/4 of the ham to make sandwiches for her friends and 1/5 of the ham in an omlete. How
Dmitrij [34]
Lets divide the problem in parts, first for sandwiches she used 3/4 out of 20 ounces of ham:
(3/4)(20) = 60/4 = 15
so for sandwiches Lauren used 15 ounces
Then for omelete she used 1/5, that is:
(1/5)(20) = 20/5 = 4
then Lauren used 4 ounces for omelete
So Lauren used 15 ounces for sandwiches and 4 ounces for omelete, that is 19 ounces in total, so there are left from the 20 original ounces:
20 - 19 = 1
there is 1 ounce of ham left
8 0
3 years ago
If y varies directly as x and y=288 when x=16 determine the value of y when x-13
Ray Of Light [21]
Y = kx is the direct variation equation
Substitute the x and y that are given to find k then write your new equation in terms of y with the k.

288 = k(16) divide by 16 to find k
18 = k
Now write the new equation
y = 18x

y = 18(13) or y = 18(-13) I'm not sure by what you have typed if that is supposed to be and equal sign or a negative.
y = 234 OR y = -234
5 0
3 years ago
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