All categories

4 years ago

T. Gibbs has $250in a bank account and he plans to ad $15 a week. How many weeks will it take for him to save $400

Mathematics

2 answers:

saw5 [17]4 years ago

6 0

Answer: 10 weeks

Step-by-step explanation: the first step is to subtract

400-250=150.

So he needs to save $150 to make $400.

Divide $150/$15 =10.

It means he has 10 weeks more to save for $150 to make $400.

Therefore the final answer is 10 weeks

Bezzdna [24]4 years ago

6 0

Answer:

10 weeks

Step-by-step explanation:

You might be interested in

Given x || y.

ivanzaharov [21]

Angles 1 and 2 are supplementary because they add up to 180°

6 0

3 years ago

How to get from 92 to 280 in 4 jumps. This is supposed to be an exponential equation. You have to multiply the same number every

bogdanovich [222]

The exponential function is
f(x)=ab^x, where b is the base, the number to multiply every time x is increased by 1.

If f(x)=92, f(x+4)=280, then
f(x+4)/f(x) = 280/92 = ab^(x+4)/(ab^x) = b^4
to find the base b,
b^4=(280/92)
b=(280/92)^(1/4) ..... fourth root, or take square-root twice
=3.4035^(1/4)
=1.3208 (accurate to 4 places of decimal).

Edit: 92*1.3208^4 gives 279.9858 (missing little bit because of accuracy).
A slightly better accuracy would be
base = 1.320816698856163
and 92*1.320816698856163^4 would still be 279.9999999999993, but VERY close to 280.
So it all depends on the accuracy you need.
If you need more accuracy, please tell me how many accurate digits you'd like the results.
Here it is:
base = 1.320816698856163713875997666455513013800337299231824403890097792042432005288739246325005446716740
and if you multiply together
92*base^4, you will get 280 accurate to at least 90 digits after the decimal.
I think that should be sufficient for what you need. Recall that these calculations cannot be done or verified on a 10 or 12 digit calculator.

Well, to please you, I have calculated it to 500 digits, don't think that's going to be of much practical use for anybody.
By the way, that's as far as I will do this evening. My eyes are almost closing!

base=1.3208166988561637138759976664555130138003372992318244038900977920424320052887392463250054467167408005624428737585147309981331510076693180633495574937759374668399829195521733208637815593771220504215429477168159456265024711237470736388371979840461777898466419772297172931568429339640964205400234392902077320257671263508487367942846685479533507498695981037274512050120058009244868634949261015429944340565311559486391625531554216085859773912355361847787636892603324966350039688974359584811585283183726532

8 0

3 years ago

Given the figure below, find EF if CA = (6n) and EF = (n + 8)

GalinKa [24]

Answer:

$EF = 12$

Step-by-step explanation:

Given

$CA =6n$

$EF= n + 8$

Required

Find CN

From the attachment:

$EF = CD\ and\ CD = DA$

Where

$CA = CD + DA$

This means that:

$CA = CD + CD$

$CA = 2CD$

$CA = 2*EF$

This gives:

$6n = 2*(n+8)$

Open bracket

$6n = 2n+16$

Collect anf simplify like terms

$4n = 16$

$n= 4$

So:

$EF= n + 8$

$EF = 4 + 8$

$EF = 12$

8 0

3 years ago

A prism is completely filled with 2304 cubes that have edge length of 14 cm

Gemiola [76]

All we have to do is find out the volume of all the cubes to get the volume of the prism.

So since cubes are just 3D squares all of their sides are the same.

So for one cube, determining the volume is just 14^3 (length * height * width), which is 2744.

Now we just multiply 2744 by 2304 and we get: 6322176.

And so the answer is 6322176 cm^3.

This can be shown with this equation:
2304 * (14)^3=x

Where x is 6322176.

I hope this helps! (Also if you could give brainliest, I would really appreciate it!)

6 0

3 years ago

A group of children, adults, and senior citizens attended three different art exhibits that have different ticket prices for eac

jok3333 [9.3K]

Answer:

Option D) c = 100, a = 50, s = 20

Step-by-step explanation:

we have

6c + 7a + 2s = 990 -----> equation A

3c + 3a + 4s = 430 -----> equation B

2c + 4a + 4s = 480 ----> equation C

Isolate variable s in equation A

2s = 990 -6c-7a

s=495-3c-3.5a -----> equation D

Substitute equation D in equation B and in equation C

3c + 3a + 4(495-3c-3.5a) = 430

3c + 3a +1,980-12c-14a= 430

-9c-11a=-1,550 -----> equation E

2c + 4a + 4(495-3c-3.5a) = 480

2c+4a+1,980-12c-14a=480

-10c-10a=-1,500 -----> 10c+10a=1,500 -----> equation F

Solve the system of equations E and F by graphing

using a graphing tool

Let

The variable c -----> the x-axis

The variable a ----> the y-axis

The solution is the point (50,100)

see the attached figure

c=50, a=100

Find the value of s

s=495-3(50)-3.5(100)=-5 -----> is not make sense

therefore

Let

The variable c -----> the y-axis

The variable a ----> the x-axis

The solution is the point (50,100)

a=50, c=100

Find the value of s

s=495-3(100)-3.5(50)=20

therefore

The solution is

c=100,a=50,s=20

7 0

4 years ago