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3 years ago

4. 1 less than twice the square of a number

Mathematics

1 answer:

givi [52]3 years ago

5 0

Answer:

2(x^2)-1

Step-by-step explanation:

The square of a number is just the number squared. We don't know what the number is so I will just say it is x. So we have 2 times x^2. Then we have to minus 1 from that. So 2(x^2)-1.

Hope this helps! :D

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Plz can someone help me out????

Vlada [557]

Answer:

A square root parent function

Step-by-step explanation:

5 0

3 years ago

The yield of a certain chemical reaction is believed to be related to temperature. A study collected the yield from 15 such reac

Nookie1986 [14]

Answer:

t = 0.05 / 0.017

Step-by-step explanation:

Given the table :

Variable ____ Estimate

Intercept 1 ____ 15.5 ____2.96

Temp 1 _______0.05 ___ 0.017

R-sq = 0.73

The test statistic for a regression test :

t = b1 / E

Where ;

b1 = slope ; E = Standard error of the slope

From the result table ;

b1 = 0.05 ;

E = 0.017

The test statistic, t = 0.05 / 0.017

5 0

3 years ago

Please help me with this problem:)

krok68 [10]

Answer:

(2,1)

Step-by-step explanation:

3x+y = 7

-2x +y = -3

Solve the second equation for y by adding 2x to each side

-2x+2x +y = -3+2x

y = -3 +2x

Substitute into the first equation

3x+ (-3+2x) = 7

Combine like terms

5x -3 = 7

Add 3 to each side

5x-3+3 = 7+3

5x = 10

Divide by 5

5x/5 = 10/5

x=2

Now we need to solve for y

y = -3 +2x

y = -3 +2(2)

y = -3+4

y =1

5 0

4 years ago

Read 2 more answers

In a recent year, person A and person B had the two top-grossing concert tours, together generating about $300 million in ticket

Brrunno [24]

Answer: Person B had $114,000,000 and person A had $186,000,000

Step-by-step explanation:

You do $300 million divided by 2 to get 150,000,00 and then subtract 150,000,000 - 38,000,000= 114,000,000 and that's for person B and than you add the 38,000,000 to the 150,000,000 to get the amount person A had.

There you go!!!

7 0

4 years ago

1/2 = 1/a + b/c make b the subject

SCORPION-xisa [38]

Answer:

b = $\frac{ac-2c}{2a}$