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Karolina [17]
2 years ago
10

If a heart beats 30 times in 40 seconds. How many times will it beat in 1 year?

Mathematics
2 answers:
Murljashka [212]2 years ago
7 0

Answer:

10950

Step-by-step explanation:

1 year = 365

365 × 30

10950

sdas [7]2 years ago
7 0

Answer:

23,652,000 per year

Step-by-step explanation:

30 times in 40 seconds=15 times in 20 seconds

that's 45 times in one minute

45per min x (60m/hr) x (24hr/day)=64,800 per day

x (365 days per year)=23,652,000 per year

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k0ka [10]
3.5*10^6
35*10^5
350*10^4
3500*10^3
35000*10^2
350000*10
3500000
4 0
3 years ago
How many units? What is e value of a?
kkurt [141]

Answer:

a = 14

Step-by-step explanation:

3a = a + 28 ➡ 2a = 28 ➡ a = 14

6 0
3 years ago
The pH of lemon juice at 298 K is found to be 2. 32. What is the concentration of mc014-1. Jpg ions in the solution? Use StartBr
sdas [7]

The concentration of ions in the solution of lemon juice whose pH value is 2.32 is 4.79×10⁻³ M.

<h3>What is pH value?</h3>

The pH value shows that how much a solution is acidic or basic. The range of the pH value lies between the 0-14.

The pH value can be calculated with the following formula.

\rm pH=log[H^{+}]

Here, [H⁺] is the molar hydrogen ion concentration.

The pH of lemon juice at 298 K is found to be 2. 32. Put this value of pH in the above formula as,

\rm 2.32=log[H^{+}]\\\ [H^{+}]=4.79\times10^{-3} \rm \; M

Hence, the concentration of ions in the solution of lemon juice whose pH value is 2.32 is 4.79×10⁻³ M.

Learn more about the pH value here;

brainly.com/question/940314

8 0
2 years ago
Find the slope of a line parallel to the line whose equation is 3Y- 5x =15
Vanyuwa [196]

Answer:

The slope is 5/3

Step-by-step explanation:

3y-5x=15 turned into a slope intercept form is y=5/3x+5.

5/3 is the slope part of this equation.

4 0
2 years ago
A rectangle is a special type of: I. Pentagon II. Circle III. Quadrilateral IV. Triangle
dimulka [17.4K]
The correct answer is the third choice, Quadrilateral.
8 0
2 years ago
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