All categories

4 years ago

Please help ASAP 20 pts + brainliest to right/best answer

Mathematics

1 answer:

hram777 [196]4 years ago

4 0

Answer:

the answer is C

Step-by-step explanation:

The equation is just asking for you to subtract the entire function of f from the function of G. This directly translates to (x^2) - (3x +5) which cannot be simplified further than the subtraction sign. You end with x^2 - 3x -5

Hope this helps

You might be interested in

Ax+3=23 if a=0 plz help

VladimirAG [237]

Answer:

x = $\frac{23}{a}$

Step-by-step explanation:

Given equation is,

ax + 3 = 23

To solve this equation for the value of x isolate the variable 'x' on the one side of the equation.

Step 1,

Subtract 3 from both the sides of the equation.

ax + 3 - 3 = 23 - 3

ax = 20

Step 2,

Divide the equation by a,

$\frac{ax}{a}=\frac{23}{a}$

x = $\frac{23}{a}$

Therefore, x = $\frac{23}{a}$ will be the answer.

6 0

3 years ago

In the country of United States of Heightlandia, the height measurements of ten-year-old children are approximately normally dis

aliya0001 [1]

(A)

P(X < 61.25) = P((X - 55.4)/4.1 < (61.25 - 55.4)/4.1)

… ≈ P(Z ≤ 0.1427)

… ≈ 0.5567

(B)

P(X > 46.5) = P((X - 55.4)/4.1 > (46.5 - 55.4)/4.1)

… ≈ P(Z > -2.1707)

… ≈ 1 - P(Z ≤ -2.1707)

… ≈ 0.9850

5 0

3 years ago

Krishne wants to measure the mass and volume of a key. Which tools should she use?

polet [3.4K]

Answer:

a balance and a beaker of water

hope it helps mark as brainliest

5 0

3 years ago

Read 2 more answers

A proper rectangle has a lengh of 6 inches and a with of 8 inches. A square with a side lenght of 3 inches was cut of it. What i

LuckyWell [14K]

Answer:

Step-by-step explanation:

The formula for determining the area of a rectangle is expressed as

Area = 2(L + W)

Where

L represents the length of the rectangle.

W represents the width of the rectangle.

A proper rectangle has a length of 6 inches and a with of 8 inches. The area of the rectangle would be

6 × 8 = 48 inches^2

A square with a side length of 3 inches was cut of it. The formula for determining the area of a square is l^2

Therefore,

Area of square = 3^2 = 9 inches ^2

The area of the remaining paper would be

48 - 9 = 39 inches^2

5 0

3 years ago

Radioactive Decay:

Vadim26 [7]

The question is incomplete, here is the complete question:

The half-life of a certain radioactive substance is 46 days. There are 12.6 g present initially.

When will there be less than 1 g remaining?

Answer: The time required for a radioactive substance to remain less than 1 gram is 168.27 days.

Step-by-step explanation:

All radioactive decay processes follow first order reaction.

To calculate the rate constant by given half life of the reaction, we use the equation:

$k=\frac{0.693}{t_{1/2}}$

where,

$t_{1/2}$ = half life period of the reaction = 46 days

k = rate constant = ?

Putting values in above equation, we get:

$k=\frac{0.693}{46days}\\\\k=0.01506days^{-1}$

The formula used to calculate the time period for a first order reaction follows:

$t=\frac{2.303}{k}\log \frac{a}{(a-x)}$

where,

k = rate constant = $0.01506days^{-1}$

t = time period = ? days

a = initial concentration of the reactant = 12.6 g

a - x = concentration of reactant left after time 't' = 1 g

Putting values in above equation, we get:

$t=\frac{2.303}{0.01506days^{-1}}\log \frac{12.6g}{1g}\\\\t=168.27days$

Hence, the time required for a radioactive substance to remain less than 1 gram is 168.27 days.

7 0

3 years ago