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beks73 [17]
3 years ago
14

Evaluate the expression. 3 (x + y), x = 5 and y = 2

Mathematics
2 answers:
Kaylis [27]3 years ago
3 0

Answer:

put x and y value in equation 1

3 (5+2)

3 (7)

21

Step-by-step explanation:

mixas84 [53]3 years ago
3 0

Answer:

21

Step-by-step explanation:

Substitute the value of the variable into the expression and simplify.

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c) If an initial investment of $ 35,000 grows to $257,000 in 15 years, what annual interest rate, continuously compounded, was e
castortr0y [4]

Answer: 13.29%

Step-by-step explanation:

The formula to calculate the compound amount (compounded continuously) is given by :-

A=Pe^{rt}, where P is the principal amount , r is the rate of interest ( in decimal) and t is the time period.

Given : P= $ 35,000 , A=  $257,000 and t=15 years

To find : r , we substitute all the values in the above formula , we get

257000=(35000)e^{15r}\\\\\Rightarrow\ e^{15r}=\dfrac{257000}{35000}\\\\\Rightarrow\ e^{15r}=7.3428

Taking natural log on both the sides , we get

15r=\ln(7.3428)\\\\\Rightarrow\ 15r=1.9937\\\\\Rightarrow\ r=\dfrac{1.9937}{15}0.132913333333\approx0.1329=13.29\%

Hence, the annual interest rate = 13.29%

6 0
3 years ago
4. Name the first five terms of the arithmetic sequence. a1 = -35, d=4​
eduard

Answer:

Step-by-step explanation:

We first have to write the equation for the sequence, then finding the first five terms will be easy. Follow the formatting:

a_n=a_1+d(n-1) and we are given enough info to fill in:

a_n=-35+4(n-1) and

a_n=-35+4n-4 and

a_n=-39+4n or in linear format:

a_n=4n-39 where n is the position of the number in the sequence. We already know the first term is -35.

The second term:

a_2=4(2)-39 so

a_2=8-39 and

a_2=-31

The third term:

a_3=4(3)-39 and

a_3=12-39 so

a_3=-27 and we could go on like this forever, but the nice thing about this is when we know the difference all we have to do is add it to each number to get to the next number.

That means that the fourth term will be -27 + 4 which is -23.

The fifth term then will be -23 + 4 which is -19. You can check yourself by filling in a 5 for n in the equation and solving:

a_5=4(5)-39 and

a_5=20-39 so

a_5=-19

7 0
3 years ago
Pls help I struggling a lot pls pls pls I need pro math expert
Soloha48 [4]

Answer:

Option: h\leq 16

Step-by-step explanation:

<u>Looking for key words in the problem:</u>

"At Most" represents important key words, meaning the maximum amount of hotdogs that are at the barbecue.

<u>Inequality:</u>

h\leq 16

h \leq 16 represents the maximum amount of hotdogs that has to be at the barbecue, also represents less than 16 can be cooked.

3 0
2 years ago
Me dicen la sifra 5p-14=8p+19
Alex
5p-14=8p+19
8p-5p = -3p
-3p-14=18
14+18 = 33
33/-3=-11
7 0
3 years ago
Which of the following could be a measurement on a scale drawing that has a scale of 2:5? 2 in.:5 ft
12345 [234]
It's the1st: 4 cm/10 cm because:
4/10 = 2/5 .  and because they have the SAME UNIT (cm)
6 0
3 years ago
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