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nordsb [41]
3 years ago
12

A adult blinks about 450 times every 30 minutes. a 12 year old blinks about 150 times every 15 minutes. how many more times does

a adult blink every hour than a 12 year old
Mathematics
1 answer:
ahrayia [7]3 years ago
4 0
An adult blinks 300 times more in an hour
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Finding the original price given the sale price and percent...
bulgar [2K]

Answer:

$325

Step-by-step explanation

78% is 234

x is 100%

cross multiply

\frac{234}{72} = \frac{x}{100}

234 × 100 = 72x

23400 = 72x

23400÷72 =72x ÷72

325 = x

4 0
3 years ago
Use the power-reducing formulas to rewrite each of the expressions in terms of the first power of the cosine. Sin^4cos^4
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Step-by-step explanation:

See attachment for steps

6 0
2 years ago
Calcular la edades actuales de una madre y sus dos hijos sabiendo que hace 14 años la dad de la madre era 5
rodikova [14]

The present age of mother and her daughter respectively are; 40 and 10 years respectively.

<h3>How to Solve Algebra Word Problems?</h3>

Let x and y be the present age of mother and her daughter respectively.

Therefore;

x + y = 50

x = 50 − y     .....(1)

After 20 years, mother's age will be twice her daughter's age at the time. Thus;

x + 20 = 2(y + 20)

x − 2y = 20     .....(2)

Plugging eq 1 into eq 2 gives us;

50 − y − 2y = 20

3y = 30

y = 10

Thus;

x = 50 − 10

x = 40

Thus, the present age of mother and her daughter is 40 and 10 years respectively.

Translation of the question into English is;

The sum of the present ages of mother and her daughter is 50 years. After 20 years, mother's age will be twice her daughter's age at the time. Find their present ages.

Read more about Algebra Word Problems at; brainly.com/question/21405634

#SPJ1

6 0
1 year ago
What values of the variables highlighted would create an equation infinitely many solutions
Otrada [13]
A = -5
b = 2
I’m pretty sure
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150 inches because i say it is because i just need the points to ask another question
6 0
2 years ago
Read 2 more answers
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