In 4 years, harry’s age will be the same as jim’s age is now. in 2 years, jim will be twice as old as harry will be. find their ages now.

QUESTION POSTED AT 20/02/2020 - 11:19 PM

Answered by admin AT 20/02/2020 - 11:19 PM

The answer to this question would be:
Jim     =6 years
Harry =2 years

To answer this question, you need to translate the description into a  mathematical equation. If H= Harry's ages and J= Jim's ages, then the equation should be look like this:

1. H+4= J
2. (J+2)= 2(H+2)
     J+2= 2H+4
     J= 2H +2

If you put the 1st and 2nd equation together, the result would be:
H+4= J
H+4= (2H +2)
H-2H= 2-4
-H= -2
H=2

After that insert the H value to either 1st or 2nd equation.
H+4= J
2+4=J
J= 6
Post your answer

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ANSWERED AT 31/03/2020 - 10:46 AM


QUESTION POSTED AT 31/03/2020 - 10:46 AM

Find the volume V of the cone

V=πr^2(h/3)
V≈804.25

Since the height is 12, and radius is 8, take the radius and square it. 8 squared equals 64. Now, take the height (12) and divide that by three. This equals 4. 

So Volume = Pi times 64 times 4. The answer should be 804.247. Once rounded, you should get 804.25

ANSWERED AT 31/03/2020 - 10:46 AM


QUESTION POSTED AT 31/03/2020 - 10:46 AM

Let the sequence {an} be defined so that a1 = 1 and each succeeding term is found by multiplying the one before it by 4. Find the formula representing an, the nth term of the sequence.

A₁ = 1 = 4⁰

a₂ = 4 =4¹

a₃ =4 x 4=4²

a₄ =4 x 4² =4³
...................
...................

a(n) = 4⁽ⁿ⁻¹⁾

ANSWERED AT 31/03/2020 - 10:44 AM


QUESTION POSTED AT 31/03/2020 - 10:44 AM

Yesterday, Jim had b baseball cards. Today, he gave 13 away. Using b, write an expression for the number of cards Jim has left.

Jim started with b baseball cards and gave 13 away. So, that means we take away from his starting amount or b.

So, b - 13 is the expression you are looking for.

ANSWERED AT 31/03/2020 - 10:43 AM


QUESTION POSTED AT 31/03/2020 - 10:43 AM

Find the first, fourth and eighth terms for a(n)=-3*2^n-1 please help!

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ANSWERED AT 31/03/2020 - 10:42 AM


QUESTION POSTED AT 31/03/2020 - 10:42 AM

Explain how u find the area of the base of a pyramid

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ANSWERED AT 31/03/2020 - 10:40 AM


QUESTION POSTED AT 31/03/2020 - 10:40 AM

Find the area of the shaded portion of the diagram (use 3.14 for p).A)220.16 square yardsB)6.88 square yardsC)55.04 square yardsD)13.76 square yards

Get the area of the circle. Use this formula: 
Area =  \pi * radius^2

We know the radius is 4 yards.

Area = 3.14 * 4^2
Area = 3.14 * 16
Area = 50.24

Now for the square. Double the radius to get the diameter to get the length of the side.

4 * 2 = 8

Formula for finding the area of a square is
Area = side^2

Area = 8^2
Area = 64

And because we only want to shaded portion, we will subtract the area of the circle from the square.

64 - 50.24 = 13.76

So, 
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ANSWERED AT 31/03/2020 - 10:38 AM


QUESTION POSTED AT 31/03/2020 - 10:38 AM

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ANSWERED AT 31/03/2020 - 10:37 AM


QUESTION POSTED AT 31/03/2020 - 10:37 AM

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Hol up this seems rly hard Ima get back to uu

ANSWERED AT 30/03/2020 - 01:37 AM


QUESTION POSTED AT 30/03/2020 - 01:37 AM

Help please will mark brainliest answer!!! ASAP!!! What is the final balance for an account starting with $3000 at 2.5% interest compounded annually for 4 years? A = P(1 + r)t

P = principal (initial amount), r = rate of interest, and t = time

So, A = 3000(1+0.025)^4

Answer: $3,311.44 (approximately)

ANSWERED AT 30/03/2020 - 01:35 AM


QUESTION POSTED AT 30/03/2020 - 01:35 AM

Help please will mark brainliest answer!!! ASAP!!! What is the final balance for an account starting with $3000 at 2.5% interest compounded annually for 4 years? A = P(1 + r)t

A = P(1+r)^t  where P is the principal (starting) amount, r is the rate of interest, and t is time. Knowing this, plug in your values:

A = 3,000(1+0.025)^4 < this is what your equation should look like. Once you enter this into a calculator, you should get an answer of $3,311.438672. Round, and you'll be finished.

Answer: The final balance on the account will be $3,311.44

ANSWERED AT 30/03/2020 - 01:33 AM


QUESTION POSTED AT 30/03/2020 - 01:33 AM

Consider the vector v=(-7,8). What is the angle between v=(-7,8) and the positive x-axis? Part 1: Use the formula v1 x v2=|v1||v2|cos theta to find the cosine of the angle between the two vectors (-7,8) and (1,0).

(1) To find the angle between v and positive x-axis, we first determine the angle formed by v and the negative x-axis. Since v = (-7,8), its vertical measure y is 8 units and horizontal measure x is 7 units.

arctan(8/7) = 48.81°
Solving for angle between v and positive x-axis:
180° - 48.81° = 131.19°

(2) v1 x v2=|v1||v2|cosθ
Calculating for the dot product of the vector:
v1 x v2 = -7*1 + 8*0 = -7
Calculating vector magnitude:
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|v2| = √(1²+0²) =1

cosθ = (v1 x v2) /|v1||v2| = -7/(√113 *1) = -0.659

ANSWERED AT 30/03/2020 - 01:28 AM


QUESTION POSTED AT 30/03/2020 - 01:28 AM

Help me start finding the angle measures

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ANSWERED AT 29/03/2020 - 06:35 PM


QUESTION POSTED AT 29/03/2020 - 06:35 PM

Find the area and peri19.6 ft13 ftA

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The perimeter is 78 because they only give you two number so whenever you do a perimeter in an equation you always have to remember to multiply. 13 multiplied by 6 is 78. Hope this helped ( :

ANSWERED AT 29/03/2020 - 06:34 PM


QUESTION POSTED AT 29/03/2020 - 06:34 PM

Box and whisker plot how do you find the percentage of students above an 80%

What do you mean? Please message me the question and I will gladly help

ANSWERED AT 29/03/2020 - 06:34 PM


QUESTION POSTED AT 29/03/2020 - 06:34 PM

40 + 20 + 10 + … ; n = 10 Find the sum of each finite geometric series.

I've attached a picture below of the formula for a finite geometric sequence. It includes an infinite geometric sequence formula for your reference, too.

a_1 = 40
r(ratio)= \frac{1}{2}
n=10

Plug in the values. 

S_{10}=40*( \frac{1- \frac{1}{2}^{10} }{1- \frac{1}{2} } )
S_{10}=40*( \frac{1- \frac{1}{1024} }{\frac{1}{2} })
S_{10}=40*( \frac{\frac{1023}{1024} }{\frac{1}{2} })
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ANSWERED AT 29/03/2020 - 06:31 PM


QUESTION POSTED AT 29/03/2020 - 06:31 PM

Given the function: f(x) = 2x2 - 3x + 8, find f(-2). A) -22 B) -11 C) 11 D) 22

Answer:

the answer is D (22)


Step-by-step explanation:


ANSWERED AT 29/03/2020 - 06:31 PM


QUESTION POSTED AT 29/03/2020 - 06:31 PM

I need help to find the cost of shirts and how much I bought?

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ANSWERED AT 29/03/2020 - 06:30 PM


QUESTION POSTED AT 29/03/2020 - 06:30 PM

Jonathan and Sarah purchased a beach house for $10,000,000. The home appreciates at a rate of 3% per year. The appreciation of the house is shown in the graph. The home is currently worth about $13,000,000. Jonathan and Sarah have owned the home for about ______ years. how many years

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13,000,000 / 10,000,000 = 1.03^years
1.3 = 1.03^years
Taking logs of both sides:
log (1.3) = years*log(1.03)
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ANSWERED AT 29/03/2020 - 06:29 PM


QUESTION POSTED AT 29/03/2020 - 06:29 PM

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ANSWERED AT 29/03/2020 - 06:24 PM


QUESTION POSTED AT 29/03/2020 - 06:24 PM

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ANSWERED AT 29/03/2020 - 06:20 PM


QUESTION POSTED AT 29/03/2020 - 06:20 PM

How do you find the area ? Do you just multiply the two ?

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ANSWERED AT 29/03/2020 - 06:14 PM


QUESTION POSTED AT 29/03/2020 - 06:14 PM

If emma spent $14.00 on jewerly and recieved $6.00 in change how much money did she spent . what equation could be used to find how much money she gave the cashier

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ANSWERED AT 29/03/2020 - 04:33 PM


QUESTION POSTED AT 29/03/2020 - 04:33 PM

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If A(x', y') & B(x",y") the the distance AB is given by the following formula:

AB =√[(x"-x')² + (y"-y')²]

Plug into the above with A(4,5) and B(-4,11).

AB =√[(-4-4)²+(11-5)²] =√(-8)²+(6)² = √(64) + (36) =√100 = 10

ANSWERED AT 28/03/2020 - 12:55 PM


QUESTION POSTED AT 28/03/2020 - 12:55 PM

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Is there some type of image for this?

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QUESTION POSTED AT 28/03/2020 - 12:55 PM

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ANSWERED AT 28/03/2020 - 12:54 PM


QUESTION POSTED AT 28/03/2020 - 12:54 PM