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zepelin [54]
3 years ago
7

What is the scale factor? Will mark brainlest

Mathematics
1 answer:
Charra [1.4K]3 years ago
7 0

Answer:

The answer is -1

Step-by-step explanation:

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Find all real solutions and show work: <br> 2x^3-3x^2+18x-27=0
Amiraneli [1.4K]

Given:

The given equation is

2x^3-3x^2+18x-27=0

To find:

All the real solutions.

Solution:

We have,

2x^3-3x^2+18x-27=0

It can be written as

x^2(2x-3)+9(2x-3)=0

(2x-3)(x^2+9)=0

Using zero product property, we get

(2x-3)=0 and (x^2+9)=0

2x=3 and x^2=-9

x=\dfrac{3}{2} and x=\pm\sqrt{-9}

We know that x=\pm\sqrt{-9} is an imaginary number because there is a negative sign under the square root.

Therefore, x=\dfrac{3}{2} is the only real solution of the given equation.

5 0
3 years ago
Hello hope your day is well i really need help with this expand question 4(a+5)-2(a-5)
BARSIC [14]

Answer:

2a + 30

Step-by-step explanation:

break it down so it is 4(a+5)

then work out -2(a-5)

so 4 x a then 4 x 5 which gives 4a + 20

then -2 x a then -2 x -5 which gives -2a + 10

then when you have 4a + 20 -2a + 10

do 4a - 2a which is 2a

do 20 + 10 which is 30

so the answer comes to 2a + 30

if anything doesnt seem right just comment and i will correct

hope this helps :)

6 0
2 years ago
Read 2 more answers
You deposit $800 in an account. The account earns $360 simple interest in 3 years. What is the annual interest rate?
Maru [420]

Answer:

15%

Step-by-step explanation:

We have the followign simple interest formula

FV (aka AV)=PV(1+it)

which means that we have

(800+360)=800(1+3i)

1.45=1+3i

.45=3i

.15=i

15%

4 0
3 years ago
Price of pizza increased from $6 to $9. What is the percent of increase in price?
horrorfan [7]
33% is ur answer

sourse: Yahoo m8
5 0
3 years ago
Which fraction is modeled by the number line?<br> A. 2/3<br> B. 2/2<br> C. 3/4<br> D. 1/3
KonstantinChe [14]

Answer:

C

Step-by-step explanation:

I think that would be c not completely sure but I hope it helps

7 0
3 years ago
Read 2 more answers
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