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faltersainse [42]
3 years ago
6

Aarons heartbeats 166 times in 120 seconds. Callie's heart 88 times beats 88 times in 60 seconds. Emma's heart beats 48 times in

30 seconds. Galen's heartbeat 22 times and 15 seconds. Which two students' heart rates are equivalent?
Mathematics
1 answer:
lesantik [10]3 years ago
5 0

Answer:

Callie and Galen.

Step-by-step explanation:

Find out how many seconds it take for their heartbeat to beat one time.

166 ÷ 120 = 1.383 (Aaron)

88 ÷ 60 = 1.466 (Callie)

48 ÷ 30 = 1.6 (Emma)

22 ÷ 15 = 1.466 (Galen)

As you see, Callie and Galen's are equivalent.

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Mark is buying different nuts to make a mixed nut platter to serve at a party. He buys 1.2 kilograms of peanuts, 300 grams of al
Nutka1998 [239]

Answer:

1900

Step-by-step explanation:

1 kg = 1000g

1.2kg = x

<u>1</u><u> </u><u>kgx</u> = <u>1</u><u>2</u><u>0</u><u>0</u><u> </u><u>kg.g</u>

1kg. 1kg

x = 1200 g

1 decagram = 10g

40 decagram = x

<u>1</u><u> </u><u>dg.x</u> = <u>4</u><u>0</u><u>0</u><u> </u><u>dg.g</u>

1 dg. 1 dg

x = 400g

so the total= 1200g +300 + 400g=1900g

without the unit = 1900

8 0
3 years ago
Megan has $15,000 to invest. She is considering two investment options. Option A pays 3.2% simple interest. Option B pays 4.1% i
True [87]

wheee



Compute each option


option A: simple interest


simple interest is easy

A=I+P

A=Final amount

I=interest

P=principal (amount initially put in)


and I=PRT

P=principal

R=rate in decimal

T=time in years


so given

P=15000

R=3.2% or 0.032 in deecimal form

T=10


A=I+P

A=PRT+P

A=(15000)(0.032)(10)+15000

A=4800+15000

A=19800

Simple interst pays $19,800 in 10 years




Option B: compound interest

for interest compounded yearly, the formula is

A=P(1+r)^t

where A=final amount

P=principal

r=rate in decimal form

t=time in years


given

P=15000

r=4.1% or 0.041

t=10


A=15000(1+0.041)^{10}

A=15000(1.041)^{10}

use your calculator

A=22418.0872024

so after 10 years, she will have $22,418.09 in the compounded interest account





in 10 years, the investment in the simple interest account will be worth $19,800 and the investment in the compounded interest account will be worth$22,418.09

4 0
3 years ago
Read 2 more answers
number between 1 and 10, inclusive, is randomly chosen. Events A and B are defined as follows. A: {The number is even} B: {The n
Rufina [12.5K]

Answer:

A U B = {1,2,3,4,5,6,8}

Step-by-step explanation:

Let's define the sets.

Let ¢ = universal set ( Contains all the elements in the set)

¢ = {1, 2, 3, 4, 5, 6, 7, 8, 9 , 10}

A= {2, 4, 6, 8}

B= {1,2,3,4,5,6}

Therefore: A U B (A union B):

A U B = {1, 2, 3, 4, 5, 6, 8}

6 0
3 years ago
Sarai was given the function, f(x) = x2 - 2x + 8.<br> For what x value(s) would f(x)=20?
Digiron [165]

Answer:

f(8)=20..The answer is 8 :)

7 0
3 years ago
Which ratio can you get by scaling up the ratio 5/6 / 1/3? Select all that apply.
Liula [17]

Answer:

the answer is 5/2 or alternative form 2*1/2 so the answer is C

3 0
3 years ago
Read 2 more answers
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