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olga2289 [7]
3 years ago
12

Write 4.651x 10^6 as an ordinary number.

Mathematics
1 answer:
Gnom [1K]3 years ago
4 0
4651000 that's the ordinary number
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Solve each system by substitution<br> 2x+y=20<br> 6x-5y=12 <br> what is (x,y)?
Delicious77 [7]

Answer:

Solve for the first variable in one of the equations, then substitute the result into the other equation.

Point Form:(7,6)

Equation Form: x=7, y=6

6 0
3 years ago
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A sequence is defined by the explicit formula an=3n+4 Which recursive formula represents the same sequence of numbers?
fomenos

Answer:

Option (3)

Step-by-step explanation:

Explicit formula of the sequence is,

a_n=3^n+4

From this explicit formula,

First term of the sequence will be,

a_1=(3^1)+4

a_1=7

Second term of the sequence,

a_2=(3^2)+4

a_2 = 13

3rd term of the sequence,

a_{3}=(3^3)+4

   = 31

Sequence formed,

7, 13, 31 ..........

From the given options,

Recursive formula,

a_n=3a_{n-1}-8

a_2=3(a_1)-8

a_2=3(7)-8

a_2=21-8 = 13

a_3=3a_2-8

a_3=3a_2-8

a_3=3(13)-8

    = 39 - 8

    = 31

Sequence formed from this recursive formula will be,

7, 13, 31........

Therefore, Option (3) will be the answer.

5 0
3 years ago
Will give Brainliest! Just correct answers with a full explanation. A Simple way to solve <img src="https://tex.z-dn.net/?f=4%5E
Amiraneli [1.4K]

4^x-2\cdot5^{2x}-10^x>0

$\implies 2^{2x}-2\cdot5^{2x}-(2^x)(5^x)>0$

let $2^x=a$ and $5^x=b$

So, $a^2-2b^2-ab>0$

divide by $b^2$, ($b^2>0$)

$\implies \left(\frac ab\right)^2-\left(\frac ab\right) -2>0$

this is a quadratic, in $\left(\frac ab\right)$, let it be $x$

So, $x^2-x-2>0$

Can you simplify it now?

8 0
3 years ago
Factorise fully<br> 15x-10
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Answer:

15

x

+

10

y

Factor

5

out of

15

x

.

5

(

3

x

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+

10

y

Factor

5

out of

10

y

.

5

(

3

x

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+

5

(

2

y

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Factor

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5

(

3

x

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+

5

(

2

y

)

.

5

(

3

x

+

2

y

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Step-by-step explanation:

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Please help me with this Statistics problem
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