Please help i mark brainliest

Mathematics

2 answers:

N76 [4]3 years ago

8 0

Answer:

okay

Step-by-step explanation:

SIZIF [17.4K]3 years ago

6 0

Answer:

can i please get brainlest please please and a thanks please ;p :p :0 :)

Step-by-step explanation:

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Lucas invested money in two accounts: one paying 3% interest and the other paying 5% interest. He invested $100 more in the 5% a

Anni [7]

He invested "a" at 3% and "b" at 5%

now, he invested 100 more in "b", so, whatever "a" may be, b = a + 100

now, how much is the interest yield of each? well
how much is 3% of a? well, (3/100) * a, or 0.03a
and 5% of b? well (5/100) * b, or 0.05b

now, we know the total yield was 53 bucks, thus 0.03a + 0.05b = 53

thus $\bf \begin{cases}
\boxed{b}=a+100\\
0.03a+0.05b=53\\
----------\\
0.03a+0.05\left( \boxed{a+100} \right)=53
\end{cases}$

solve for "a", to see how much was invested at 3%

what about "b"? well, b = a + 100

3 0

3 years ago

A study was performed with a random sample of 3000 people from one church. What population would be appropriate for generalizing

Reil [10]

The population would be set of all Christians of that particular church from where the random samples is collected.

According to the questions,

A study was performed with a random sample 3000 people from one church. In order to find appropriate population for generalizing conclusions

The population would be set of all Christians of that particular church from where the random samples is collected.

This is because random samples is collected only from the particular church, so its generalization can only be the possible to large population of that church.