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3 years ago

Which number produces an irrational number when added to 5/8?

Mathematics

2 answers:

skad [1K]3 years ago

6 0

Answer:

option d is correct.....

givi [52]3 years ago

3 0

Choice D will create an irrational number when added. This is because a rational number plus a rational number will always be irrational (you can experiment this by trying to add rational numbers to pi). For example, 3 + pi = 6.1415926..... or $1+ \frac{2}{7} =1.285714...$ .

:)

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'Five times a number minus eight is 17.5.

11Alexandr11 [23.1K]

Answer:

5.1

Step-by-step explanation:

you need to work backwards.

so do 17.5 + 8 then divide by 5 to get 5.1

i hope this helps :)

8 0

3 years ago

PLS HELP FAST I NEED IT

Gemiola [76]

Answer:

(b) 1:9

Step-by-step explanation:

(b) x*y : kx*ky, so 1:k² with k=3 is 1:9

(c) Assuming the rectangles get a z dimension, the volumes would have a ratio of xyz : xkykzk = xyz : xyzk³ = 1 : k³. With k=2 that is 1:8. But the z was never introduced so this is a bit inconclusive.

3 0

3 years ago

find the sum of a 9-term geometric sequence when the first term is 4 and the last term is 1,024 and select the correct answer be

olasank [31]

Hello,

$u_{1} =4\\
 u_{2} =4*q\\
 u_{3} =4*q^2\\
...\\

 u_{9} =4*q^8\\\\
==\textgreater\ 4*q^8=1024\\
==\textgreater\ q^8=256\\
==\textgreater\ q=2\mbox{( and there is a problem in the question) } \ or \ q=-2\\
if\ q=2 \ then\ \sum_{i=0}^{8}\ 4*(2)^i= 4*\dfrac{1-2^9}{1-2} =2044\\

if \ q=-2 \ then\ \sum_{i=0}^{8}\ 4*(-2)^i= 4*\dfrac{1-(-2)^9}{1+2} =684\\



$

Answer B (but see the problem)

7 0

3 years ago

Read 2 more answers

A car manufacturer estimates that 25% of the new cars sold in one city have defective engine

photoshop1234 [79]

Answer: 672 cars will have defective engine mounds

Step-by-step explanation: 25% of 2,688 is 672

8 0

3 years ago

PLEASE HELP ME, and explain it please please please <3

ser-zykov [4K]

The answer would be f(x)= x+47

7 0

3 years ago