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solong [7]
3 years ago
6

You drink a beverage with 120 mg of caffeine. Each hour, the caffeine in your system decreases by about 12%. How long until you

have 10 mg of caffeine?
Mathematics
1 answer:
Lena [83]3 years ago
7 0

Answer:

10 hours

Step-by-step explanation:

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Swimming Pool On a certain hot summer's day, 174 people used the public swimming pool. The daily prices are $1.50 for children a
djverab [1.8K]
\begin{gathered} C+A=174 \\ 1.5C+2.25A=341.25 \end{gathered}

6 0
1 year ago
21-3+18÷6=6<br> Determine if True?
Lunna [17]

Answer:

False

Step-by-step explanation:

21-3+18\div 6 \\\\=21-3+3\\\\=21-0\\\\=21\neq 6

7 0
2 years ago
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Can some one please help me <br> will give 94 points for it
NNADVOKAT [17]
You can solve this by using "similar triangles".

In triangle ABC, we are looking for side AC which is x. Side AC is similar to side DF in triangle EDF.

You can solve for side x by picking two sides in triangle ABC and their corresponding sides in triangle EDF. This is what I mean:
\frac{AC}{BC} =  \frac{DF}{EF}
Substitute for the values of AC, BC, DF and EF:
\frac{x}{4}  =  \frac{11}{8}  \\  \\ 8x = 4 \times 11 \\  \\ x =  \frac{44}{8}
x = 5.5 \: units
To solve for y, do the same thing. Pick two sides on triangle ABC and their corresponding sides in triangle DEF.
\frac{AB}{BC}  =  \frac{DE}{EF}
Substitute for the values and solve:
\frac{3}{4}  =  \frac{y}{8}
4y = 24 \\  \\ y = 6 \: units

We have the value x to be 5.5 units and y to be 6 units.

7 0
3 years ago
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40% of what number is 74?
user100 [1]

Answer:

185

Step-by-step explanation:

5 0
3 years ago
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Question 29: In a club of 35 boys and 28 girls, 80% of the boys and 25% of the girls have been members for more than 2 years. If
klasskru [66]

Answer:

55%

Step-by-step explanation:

What we must do is get the total number of people, that is, boys and girls who have been a member for more than 2 years, that is:

children: 0.8 * 35 = 28

girls = 0.25 * 28 = 7

Now, passing knowing the%, would be dividing the sum of the above by the sum of the total club members:

(28 +7) / (35 + 28) = 0.55

Since it is a number below 1, it cannot be a mixed number.

3 0
3 years ago
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