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4 years ago

PLEASE I NEED AN ANSWER NOW JUST PLEASE I WILL GIVE BRAINLIEST TO THE FIRST CORRECT ON

Mathematics

1 answer:

Doss [256]4 years ago

3 0

Answer: It C

Step-by-step explanation: Proportional relationships are relationships between two variables where their ratios are equivalent.

On That Problem Its Equivalent, so Its C.

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Suppose the following data show the introductory interest rates on a sample of 5 credit cards: 5.3, 2.3, 2.9, 4.3, 3.8. Calculat

evablogger [386]

Answer: 1.18

Step-by-step explanation:

Let m be mean

Mean= sum/ n

Mean= (5.3+2.3+2.9+4.3+3.8 ) / 5

m= 18.6 / 5

M= 3.72

Mean= 3.72

Standard deviation sample formula is:

S.D= sqrt((|x-m|^2) / n-1)

So let start with |x-m|^2

For 1st: |5.3-3.72|^2=2.4964

For 2nd: |2.3-3.72|^2=2.0164

For 3rd: |2.9-3.72|^2=0.6724

For 4th: |4.3-3.72|^2=0.3364

For 5th: |3.8-3.72|^2=0.0064

Summation of |x-m|^2 = 5.528

Standard deviation sample formula is:

S.D = sqrt((summation of |x-m|^2) / n-1)

S.D=sqrt(5.528 / 4)

S.D=sqrt(1.382)

S.D=1.176

S.D=1.18 to 2 decimal place

8 0

3 years ago

PLEASE HELP! THIS IS DUE IN 1 MINUTE

nikitadnepr [17]

Answer:

5,4

Step-by-step explanation:

hope this helps ^-^

3 0

4 years ago

(5^3)5<br> help me with my math i need to get up to an 70%

Fofino [41]

Answer: 625

Step-by-step explanation:

Do 5 to the third power, get the answer, and then multiply times 5 to get 625. Please mark this as the brainliest answer <3

5 0

3 years ago

PLS HELP! WULL MARK BRAINLIST!

zhuklara [117]

P2 is 4 Hope this helps :)

5 0

4 years ago

CORRECT AND CLEAR ANSWER WILL BE GIVEN BRAINLIEST An object of mass 0.30 kg is thrown vertically upwards and reaches a height of

Natalka [10]

Answer:

Final potential energy = 24 Joule

The velocity with which object must be thrown = $4 \sqrt{10}$ m/s

Step-by-step explanation:

<u>Given:</u>

Mass of object, m = 0.30 Kg

Height of object, h = 8 m

Acceleration due to gravity, g = 10 $ms^{-2}$

a) Formula for Potential Energy:

$E_p =mgh$

Where m is the mass of object

g is acceleration due to gravity and

h is the height of object

Putting the values of m, g and h

$E_p = 0.3 \times 10 \times 8\\\Rightarrow E_p =24 J$

b) Formula for initial and final velocity:

$v^{2} =u^{2} +2gh$

where v is the final velocity

u is the initial velocity with which the object is thrown

g is acceleration due to gravity and

h is the height obtained by object

here v = 0 at the height 8 m because it will come to rest at the point it attains the maximum height.

h = 8m

g = -10 $ms^{-2}$ (negative because the object's velocity is decreasing)

Putting the values to find 'u':

$0^{2} =u^{2} +2 \times -10 \times 8\\\Rightarrow u^{2} = 160\\\Rightarrow u = 4 \sqrt{10}\ m/s$

7 0

3 years ago