Solve the system of equations using substitution or graphing.
y = –x2 + 4x + 5
y = x + 1

Answer:

5.7356

Step-by-step explanation:

please mark me as brainlest and

Answer:

0.57356 × 10 = 5.7356

Step-by-step explanation:

in multiplying any decimal to number 10.. the easiest trick to do here is to move the decimal point to the right. since we have number 10 and it has one 0's in it ...

Answer:

c = -9/2

Step-by-step explanation:

Answer:

answer

Step-by-step explanation:

d becuase i it is

d. T-chart using random value of x and y.

An exponential function is where the exponent or the power of a given number(base) is the independent variable.

According to the given question we have to graph an exponential function.

Assuming the exponential function to be eˣ.

To plot this exponential function eˣ we take some negative real nos. and some positive real nos. we can also take fractional values also we can take any rational no. and even imaginary nos.

At x = 0 the function eˣ will be 1. It is a good place to stat sketching the graph.

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The percent of students who spend less than 3 hours online that are girls will be 38.24%.

Number of girls that spend less than 3 hours online = 26

Number of boys that spend less than 3 hours online = 42

Total number of students that spend less than 3 hours online = 26 + 42 = 68

Therefore, the percent of students who spend less than 3 hours online that are girls will be:

= 26/68 × 100

= 38.24%

In conclusion, the correct option is 38.24%.

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Step-by-step explanation:

I think there are some typos in a)

anyway, this is a geometric sequence.

that means that after a starting value each new term is created by multiplying the previous term by a certain factor.

a)

s1 = 450

factor f = 2.5

so,

s2 = 450×2.5 = 1125

and so on.

from that we see that

sn = 450×(2.5)^(n-1)

and as

450/2.5 = 180

or

450 = 180×2.5

we can "extract" another 2.5 factor from the basic 450.

so,

sn = 180×2.5×(2.5)^(n-1) = 180×(2.5)^n

b)

s5 = 180×(2.5)⁵ = 17,578.125 or rounded 17578

c)

the question is unclear. are the bacteria of previous generations still there, when a new one is generated ?

then the 2.5 factor creates the sum implicitly, and the total number of bacteria in the first 10 generations is simply the 10th term s10.

s10 = 180×(2.5)¹⁰ = 1716613.76953125 = 1,716,614

or is it meant to sum the numbers of each generation (the old bacteria "go away", when the next generation is generated) ?

the sum of the first n terms of such a geometric sequence is

sum = a1×(1 - f^n)/(1 - f)

so, for our first ten terms

sum = 450×(1 - 2.5^10)/(1 - 2.5) =

= 450×-9535.7431640625/-1.5 =

2860722.94921875 = rounded 2,860,723

Answer:

steps below

Step-by-step explanation:

aₙ = a₁ * rⁿ⁻¹

a₁ * r²⁻¹ = 6

a₁ * r = 6   ... (1)

a₁ * r⁵ = 1458  ... (2)

(2)/(1) : r⁴ = 243      r = ±3 [tex]\sqrt[4]{3\\}[/tex]

if r = 3 [tex]\sqrt[4]{3\\}[/tex]

[tex]a_{1} = 6 / 3\sqrt[4]{3} \\a_{1} = \frac{2}{3} \sqrt[4]{27}[/tex]  

if r = -3 [tex]\sqrt[4]{3\\}[/tex]

[tex]a_{1} = -\frac{2}{3} \sqrt[4]{27}[/tex]

The first term of the geometric progression is 256.

A geometric sequence is a sequence of numbers in which the ratio between consecutive terms is constant.

We have,

Let the first term of the geometric progression be denoted by 'a', and let the common ratio be denoted by 'r'.

According to the problem, the second term is 6, so we have:

ar = 6 ...(1)

Similarly, the seventh term is 1458, so we have:

[tex]ar^6[/tex] = 1458 ...(2)

We can use equation (1) to solve for 'r', and then substitute the value of 'r' into equation (2) to solve for 'a'.

From equation (1), we have:

r = 6/a

Substituting this into equation (2), we get:

[tex]a(6/a)^6[/tex] = 1458

Simplifying the right side of the equation, we have:

[tex]6^6[/tex] = 1458a

Solving for 'a', we get:

a = [tex]6^6[/tex]/1458 = 256

Therefore,

The first term of the geometric progression is 256.

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Answer:

54 degrees

Step-by-step explanation:

The sum of all the exterior angles on ANY convex polygon = 360 degrees

X = 360-47-97-36-88-38

= 54 degrees

Answer:

x is element of -1/2 and 2

Step-by-step explanation:

this is the answer

brainlist please

Answer:

tenths

Step-by-step explanation:

Tenths would be the place value found to the left of the 1 in 0.01 because the one is in the hundredths place value. If you move over to the left, it would be the tenths. Hope this helps!

Answer:

y=3/4x+2

Step-by-step explanation:

Idont know how to graph on brainly

Answer:

80 degrees

Step-by-step explanation:

-3 + 83 is the same as 83 -3.

Answer:

9^3

Step-by-step explanation:

Hi! I hope this helps:

I got 9^3 because I would have solved this problem by doing 9 x 9 x 9, but since it says to answer as a power, I would say 9^3. (Sorry if I didn't include the explanation of why I got 9 x 9 x 9. It's kind of hard to explain it on here for me.

The number of people who received a flyer on Friday is 729.

Given that,

Based on the above information, the calculation is as follows:

[tex]= 9 \times 9 \times 9[/tex]

= 729

Therefore we can conclude that the number of people who received a flyer on Friday is 729.

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Answer:

C

Step-by-step explanation:

If I had to choose I'd say C since it makes the most sense. A also could be a good answer but I'd say C

Answer: 20m^(2)-9m-20

Step-by-step explanation

Answer:

[tex]\begin{cases}a_1 = 10\\a_{n+1} = a_n + 4\end{cases}[/tex]

==================================================

Explanation:

The first row [tex]a_1 = 10[/tex] indicates the first term is 10. The small "1" is the index number. That means [tex]a_2[/tex] is next followed by [tex]a_3[/tex] and so on.

To generate the next term, we follow this recursive step: [tex]a_{n+1} = a_n + 4[/tex]

It means "whatever the nth term [tex]a_n[/tex] is, we add 4 to it to get the next term [tex]a_{n+1}[/tex]"

In other words, we add 4 to each term to get the next term.

Eg: 10+4 = 14 and 14+4 = 18

The recursive step could be rewritten as [tex]a_n = a_{n-1}+4[/tex] based on how you frame things.

Answer:

2 × [tex]4x^{n}[/tex]- 1

Step-by-step explanation:

Answer:

Perpendicular

Step-by-step explanation:

Answer:

The graph of the function  is shifted 6 units above that of the graph of f.

Step-by-step explanation:

Assuming that f and g are functions that map real numbers to real numbers, the graph of f is the set

{f(x) : x in R }

and the graph of g is the set

{g(x) : x in R}

where R is the set of real numbers. Since g(x) = f(x), the graph of g is then

{f(x) + 6 : x in R}.

Answer:

64%

Step-by-step explanation:

1. First, we must know that the fraction 48/75 represents that out of 75 total fish, 48 of them were trout.

2. Now, let's divide 48 by 75:

3. Lastly, to convert it into a percentage, we must multiply 0.64 by 100:

Therefore, the answer is 64%.

The Baby unicorns fly 4 hours for 5 days and 2 hours for 2 days.

Let x represent the number of days flown 4 hours and y represent the number of days flown 2 hours

Since they worked a total of 7 days, hence:

x + y = 7     (1)

Also, they flew for 24 hours hence:

4x + 2y = 24   (2)

Solving equations 1 and 2 simultaneously gives:

x = 5, y = 2

Therefore they fly 4 hours for 5 days and 2 hours for 2 days.

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Answer:

87452

Step-by-step explanation:

not needed

Answer: in 2015 they sold 37,314.  In total they sold 87,452 in all three years combined.

Step-by-step explanation:

Answer:

18cm

Step-by-step explanation:

20/10 = 2cm

So since 2x10 is 20 and it exceeded only 10%, we only subtract 2 from 20 which you leave you with 18cm.

Answer:

five hundred and seventy two, one hundred and ninety eight

Step-by-step explanation:

Answer:

cx+3x^2+2c+6x-531

Step-by-step explanation:

Answer:

Step 1: 2x - 6 = 4x

Step 2: -6 = 2x

Step 3: -3 = x

Step-by-step explanation:

Step 1: Start off with the distributive property, multiplying 2 by x and -3.

2(x - 3) = 4x ------> 2x - 6 = 4x

Step 2: Subtract 2x from both sides.

2x - 6 = 4x ------> -6 = 2x

Step 3: Divide by 2 to solve for x.

-6 = 2x ------> x = -3

ngl you should probably know this...

Answer:

4, 3, then 5

Step-by-step explanation:

1. 2x-6=4x

2. -6=2x

3. -3=x

Work Shown:

Social Security = 6.2% of 433.21 = 0.062*433.21 = 26.86

Medicare = 1.45% of 433.21 = 0.0145*433.21 = 6.28

Add up those results to get 26.86+6.28 = 33.14

Answer:

16km/h

Step-by-step explanation:

average speed = total distance traveled / total time taken

30 min = 0.5 h

8/0.5 = 16km/h