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3 years ago

7

Mathematics

1 answer:

allochka39001 [22]3 years ago

6 0

The answer is 90 I think I multiplied 6*3 =18 *4 =72( for every rectangle )then 3*3 =9 for the square (2 squares ) 9*2=18

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What is the value of the expression 2m + m - 4(-2m +1-m) When m= -8?

Natasha2012 [34]

Answer:

The answer to this question is -44

Step-by-step explanation:

Math-way its a free app kind of like brainly except its a lot faster:)

5 0

3 years ago

PLEASE HELP ASAP PHOTO BELOW

Nataly [62]

Answer:

he needs 60 more

Step-by-step explanation:

there's already 30 but its suppose to have a height of 3 so you gotta stack 30 more 2 times

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4 years ago

Hello i would like help and the answer to this please; what is the nth term rule of

Paraphin [41]

Answer:

The nth term of the given sequence

$a_{n} = a_{n-1} + (2n-1)$

Step-by-step explanation:

Explanation:-

Given sequence -5,-4,-1,4,11,20,31

a₀ = -5

a₁ = a₀ +1 = -5 +1 = -4

a₂ = a₁ + 3 = -4+3 = -1

a₃ = a₂ + 5 = -1 +5 = 4

a₄ = a₃ + 7 = 4 + 7 =11

a₅ = a₄ + 9 = 11+9 = 20

a₆ = a₅ + 11 = 20+11 = 31

a₇ = a₆ + 13 = 31 +13 =44

and so on

The nth term of the given sequence

$a_{n} = a_{n-1} + (2n-1)$

7 0

3 years ago

5. Investment account 1 starts with a balance of $200 and doubles every year. Investment account 2 starts with $1,000 and increa

Mnenie [13.5K]

Answer:

a. Account 1: 1 year Account 2: 10 years

b. Account 1: 2 years Account 2: 30 years

c. The first account grows exponentially, while the second one grows at a linear rate. Therefore, over time the first account tends to surpass the second one in value.

Step-by-step explanation:

The first account can be modeled by using a compounded formula with 100% rating, since it doubles every year. The formula is shown below:

M = C*(1 + r)^t

Where M is the final amount, C is the initial amount, r is the interest rate and t is the elapsed time. If r = 1, then it doubles every year, so we have the following expression for the first account:

M = 200*(2)^t

While the second acount grows at a steady rate of $100, therefore it can be modeled by the initial amount added by the growth rate multiplied by the elapsed time as shown below:

M = 1000 + 100*t

a. The first acount take 1 year to double, since it doubles every year.

In order for the second acount to double it needs to reach M = 2000, so we have:

2000 = 1000 + 100*t

100* t = 2000 - 1000

100*t = 1000

t = 10

It will take 10 years to double.

b. The first account will double again in 1 more year, so 2 years total.

The second account will need to reach M = 4000, therefore:

4000 = 1000 + 100*t

100*t = 4000 - 1000

100*t = 3000

t = 30

It'll take 30 years total for the second account to double again.

c. Since the first account grows exponentially it grows at a faster rate in comparison to the second one that grows linearly over time. Therefore over time the first account tends to surpass the second one in value.

5 0

3 years ago

Emily has a jag of water, a hollow glass cone, and a hollow glass cylinder to conduct an experiment. If the cone and cylinder bo

Marta_Voda [28]

Answer:

Option H. The cone must be filled with water and emptied into the cylinder three times in order to fill the cylinder with water. Therefore The volume of a cone is one-third the volume of the cylinder

Step-by-step explanation:

we know that

The volume of the cone is equal to

$Vcone=\frac{1}{3}\pi r^{2} h$