# math (Reiny)

posted by .

If # (a,b,c,d)means you raise b,c and d to the power of a and then take the sum of the resulting values, and # (2,3,4,d)=89,then d=?

2^a + 3^a + 4^a = 89
1^a + 1^a + 1^a = 89
3^a = 89
a = 86

an I do it right

• math (Reiny) -

If # (a,b,c,d)means you raise b,c and d to the power of d and then take the sum of the resulting values, and # (2,3,4,d)=89,then d=?

2^d + 3^d + 4^d = 89
1^d + 1^d + 1^d = 89
3^d = 89
d = 86

• math (Reiny) -

If # (a,b,c,d)means you raise b,c and d to the power of a and then take the sum of the resulting values, and # (2,3,4,d)=89,then d=?

a. 8
b. 9
c. 64
d. 81
e. 90

• math (Reiny) -

2 + 3^a + 4^a + d^a = 89
2 + 1^a + 1^a + d^a = 89
2^a + d^a = 87

• math (Reiny) -

I don't know how to do

## Similar Questions

1. ### physics-intensity

The intensity of a certain sound wave is 6 ì W.cm2. if its intensity is raised by 10 decibels, the new intensity (in ìW/cm2) is : a. 60 b. 6.6 c. 6.06 d. 600 E. 12 You can calculate this if you wish using logs, but you can do it …
2. ### mechanics- physics

An electron moving at a speed of 5 x 10 raise to power 6m/s was shot through a sheet of paper which is 2.1 x 10 raise to power 4cm thick. The electron emerges from the paper with a speed of 2 x 10 raise to power 6 m/s. Find the time …
3. ### mechanics- physics

An electron moving at a speed of 5 x 10 raise to power 6m/s was shot through a sheet of paper which is 2.1 x 10 raise to power 4cm thick. The electron emerges from the paper with a speed of 2 x 10 raise to power 6 m/s. Find the time …
4. ### mechanics- physics

An electron moving at a speed of 5 x 10 raise to power 6m/s was shot through a sheet of paper which is 2.1 x 10 raise to power 4cm thick. The electron emerges from the paper with a speed of 2 x 10 raise to power 6 m/s. Find the time …
5. ### mechanics of materials

A metal bar with a cross-sectional area of 50mm2 is subjected to a tensile strain of 0.001. What is the tensile force responsible for the strain given that the material has a Young's modulus of 15GNm raise to the power -2 A 0.003N …
6. ### math

If #(w,x,y,z)means you raise w,x,and y to the power of z and then take the sum of the resulting values ande # (8,10,11,z)=3,then for all positive values of z, then z=?
7. ### math

If # (a,b,c,d) means you take the positive value of the square root of each term, then add the resulting values, and # (a,36,16,9)=15, then a = ?
8. ### Physics

A motor outputs power of 500 watts and is used to raise a 5kg mass vertically at constant speed. How long in seconds does it take to raise the mass 15 meters?
9. ### Math

Selina has a homework consisting of 4 questions.In each question,she needs to find the value of each power.When she turns in her homework,her teacher says she got 3 correct answers which of the following values did she calculate incorrectly?
10. ### MATHS

SIMPLIFY SIN RAISE TO POWER 4 MINUS COS RAISE TO POWER4 DIVIDED BY 1 MINUS 2SIN RAISE TO POWER 2

More Similar Questions