Someone please help me

Answer:

a = -1/2 & k = 3/7

Step-by-step explanation:

Solve for a over the real numbers:

24 a^3 + 8 a^2 + 6 a + 4 = 0

The left hand side factors into a product with three terms:

2 (2 a + 1) (6 a^2 - a + 2) = 0

Divide both sides by 2:

(2 a + 1) (6 a^2 - a + 2) = 0

Split into two equations:

2 a + 1 = 0 or 6 a^2 - a + 2 = 0

Subtract 1 from both sides:

2 a = -1 or 6 a^2 - a + 2 = 0

Divide both sides by 2:

a = -1/2 or 6 a^2 - a + 2 = 0

Divide both sides by 6:

a = -1/2 or a^2 - a/6 + 1/3 = 0

Subtract 1/3 from both sides:

a = -1/2 or a^2 - a/6 = -1/3

Add 1/144 to both sides:

a = -1/2 or a^2 - a/6 + 1/144 = -47/144

Write the left hand side as a square:

a = -1/2 or (a - 1/12)^2 = -47/144

(a - 1/12)^2 = -47/144 has no solution since for all a on the real line, (a - 1/12)^2 >=0 and -47/144<0:

Answer: a = -1/2

______________________________________

Solve for k over the real numbers:

(7 k - 3) (k^2 - 2 k + 7) = 0

Split into two equations:

7 k - 3 = 0 or k^2 - 2 k + 7 = 0

Add 3 to both sides:

7 k = 3 or k^2 - 2 k + 7 = 0

Divide both sides by 7:

k = 3/7 or k^2 - 2 k + 7 = 0

Subtract 7 from both sides:

k = 3/7 or k^2 - 2 k = -7

Add 1 to both sides:

k = 3/7 or k^2 - 2 k + 1 = -6

Write the left hand side as a square:

k = 3/7 or (k - 1)^2 = -6

(k - 1)^2 = -6 has no solution since for all k on the real line, (k - 1)^2 >=0 and -6<0:

Answer: k = 3/7

Answer: x = 2 degrees Fahrenheit

Step-by-step explanation:

5-3= 2 it’s a pretty simple equation

Answer:

x ≥ 0

Step-by-step explanation:

The domain of the profit function G(x) is the set of all possible values that "x" could assume. In this function, "x"represents the sales in thousand of dollars, therefore the minimum possible value is zero (scenario in which there are no sales). Assuming an hypothetical scenario in which the company has an infinite supply capacity, there is no upper limit for what their sales might be. Thus, the domain for the function is x ≥ 0.

Answer:

x > or equal to 0

Step-by-step explanation:

Answer:

didn't i answer this on your last post?

Answer:

9.92

Step-by-step explanation:

1.72/0.86=x/4.96

.86x=8.5312

x=992

The best estimate for my answer is 410 to the nearest ten

Answer:

410

Step-by-step explanation:

Answer:

Yes

Step-by-step explanation:

24²+24²=x², x = 33.94

33.94²+14²=x², x = 36.71 inches

1 yard is about 36 inches, so it should just fit.

Answer:

5530

Step-by-step explanation:

Answer:

Step-by-step explanation:

50 times 9 equals 450

then add the 5050 and 30 to get 5080

then add up 5080 and450 and get your answer of 5530

Answer:

34.996 to 2 dcp is 35.00

Step-by-step explanation:

6 rounds up 9 goes to 10 add the 1 left over to make the units number equal 5 but as it is decimal place remember to add the 0's

Answer:

35.00

Step-by-step explanation:

just don't leave the zeros.

Answer:

I think its G, I'm not 100% sure...

Answer:

x^2 - 10x + 25

Step-by-step explanation:

I'm hoping that the 2 means squared.

x^2 - 10x + 25

Answer:

x^2 -10x+25

Step-by-step explanation:

(x-5)^2

(x-5)(x-5)

FOIL

first = x*x = x^2

outer:-5x

inner: -5x

last: -5*-5 = 25

Add them together

x^2 -5x-5x+25

Combine like terms

x^2 -10x+25

Standard form is ax^2 +bx +c so this is standard form

Answer:

3.294

Step-by-step explanation:

The standard form of the given number is [tex]3294000[/tex].

Important information:

in a calculator, the numbers on the right side of E are the exponent of 10. So, the scientific notation of the given number is:

[tex]3.294E6=3.294\times 10^6[/tex]

It can be written as:

[tex]3.294E6=3.294\times 1000000[/tex]

[tex]3.294E6=3294000[/tex]

Therefore, the standard form of the given number is [tex]3294000[/tex].

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Answer:

13/b I think

Step-by-step explanation:

Y=7

Step-by-step explanation:

Move all terms not containing y to the right side of the equation.

4y=22+6

Then add 22 and 6.

4y=28

Divide each term in 4y=28 by 4

4y÷4=28÷4

Cancel the common factor of 4 in the first part of the equation so it looks like this...

y=28÷4

Divide 28 by 4.

Therefore y=7

Hope this helps! If you have any more questions or you need further clarification on anything then please comment down below! Good luck!

Answer:

180

Step-by-step explanation:

Answer:

180

Step-by-step explanation:

the original price * 80% = 144

Change to decimal form

the original price * .80 = 144

Divide each side by .80

the original price * .80/.80 = 144/.80

the original price =180

Answer:

m=4

Step-by-step explanation:

7=2m-1

+1 +1

8=2m

÷2 ÷2

m=4

Answer:

? =8.77

Step-by-step explanation:

Since this is a right triangle, we can use trig functions

sin theta = opposite side/ hypotenuse

sin 20 = 3 / ?

? = 3/ sin 20

? = 8.7714132

To the nearest hundredth

? =8.77

Answer:

A = 49 pi

Step-by-step explanation:

The area of a circle is given by

A = pi r^2

A = pi (7)^2

A = 49 pi

Answer:

A.

Step-by-step explanation:

in A. your q is 3 so: a1=1 a2= a1*q=3 a3=a2*q=9 and so on.

i C. its almost the right answer too,but notice that a1 is 0. so 0*2 is still 0 so though it looks almost perfect the first number ruins it

We need to get x by itself.

We do that by subtracting 5 from both sides.

This leaves us with x = -7.

So x = -7 is the solution.

Answer:

The final answer is [tex]x = -7[/tex] .

Step-by-step explanation:

Solve the equation:

[tex]5 + x = -2[/tex]

Subtract both sides by 5:

[tex]5 - 5 + x = -2 -5[/tex]

[tex]x = -7[/tex]

So, therefore, [tex]x = -7[/tex] is the final answer.

Answer:

The slope intercept form is typically in the form of

y=mx+c

c=-2

m=4

The slope intercept form of the equation is

y=4x-2

Answer:

where's the picture I can't see it

According to the graph, I can see

42 Miles = 68 Kilometers

32 Miles = 22 Kilometers

The distance between London and Cardiff is 240 Kilometers

Mile is under the Imperial System and

Kilometers is under the metric system.

The metric units used for measuring length, mass, area and capacity. For example, millimeters, centimeters, meters, and kilometers are the metric units of the measurement of length. Grams and kilograms are the units for measuring weight.

Learn more about Measuring System here

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Answer:

1) a30=96

2) 30(-20+96)/2

3) 1140

Step-by-step explanation:

I just did on Edg 2020

The solution is, the 30th term of the sequence a_30 = 96.

An arithmetic progression or arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant.

For instance, the sequence 5, 7, 9, 11, 13, 15.. . is an arithmetic progression with a common difference of 2.

The nth term of AP : a_n = a + (n – 1) × d

here, we have,

the given sequence is,

-20,-16, -12,-8,-4, ...

so, here, we have,

a = -20

d = 4

so, the 30th term of the sequence is,

a_30 = a + (30-1) d

         = -20 + 29*4

         = 96

Hence, The solution is, the 30th term of the sequence a_30 = 96.

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Answer:

The Equation that represents these inverse variation is:

Speed is inversely proportional to Time

Speed (S) ∝ 1/ Time(T)

And the constant of proportionality = Distance(D)

Therefore, Speed = Distance/ Time

Step-by-step explanation:

For an inverse variation, one element increases while the other element decreases. In this question, the element or variable that increases is the speed while the element or variable that decreases is the time.

We can see from the question that

a) If he runs at an average speed of 15 feet/second, he can finish the race in 6 seconds.

b) If he runs at an average speed of 18 feet/second, he can finish the race in 5 seconds

Speed is inversely proportional to Time because the higher the speed, the lesser the time it takes to go or move in a particular direction or to go in a particular distance.

Hence, the Equation that represents these inverse variation is:

Speed is inversely proportional to Time

Speed (S) ∝ 1/ Time(T)

For inverse variation or proportionality, a constant is always needed

And the constant of variation or proportionality = Distance(D)

Therefore, Speed = Distance/ Time

Answer:

$35.05

Step-by-step explanation:

3 $20 bills turns into $60 and 60-24.95=35.05

Answer:

It should be red or green 125 times

Step-by-step explanation:

The first thing to do here is to calculate the probability of selecting a red or a green marble

Total number of marbles = 7 + 3 + 2 + 8 = 20

Probability of selecting a red marble is 7/20

Probability of selecting a green marble is 3/20

The probability of selecting a red or a green marble = Probability of selecting a red marble + Probability of selecting a green marble = 7/20 + 3/20 = 10/20 = 1/2

Now our selection spans 250 times, the number of times it should have been a green or a red marble = The probability of selecting a green or a red marble * number of selection times = 1/2 * 250 = 125 times

Answer: C) H0 : μ = 250 , Ha: μ < 250

Step-by-step explanation:

The questions is incomplete. The correct question is

A restaurant advertises that its burritos weigh 250 g. A consumer advocacy group doubts this claim, and they obtain a random sample of these burritos to test if the mean weight is significantly lower than 250 g. Let u be the mean weight of the burritos at this restaurant and ĉ be the mean weight of the burritos in the sample. Which of the following is an appropriate set of hypotheses for their significance test? Choose 1 answer:

A) H0 : x = 250 , Ha : x < 250

B) H0 : x = 250 , Ha : x > 250

C) H0 : μ = 250 , Ha: μ < 250

C) H0 : μ = 250 , Ha: μ > 250

Solution:

The null hypothesis is the hypothesis that is assumed to be true. The restaurant advertises that its burritos weigh 250. This is the null hypothesis. 250 is the population mean,μ . Thus, the null hypothesis is

H0 : μ = 250

The alternative hypothesis is what the researcher expects or predicts. The consumer advocacy group tests if the mean weight is significantly lower than 250g. This is the alternative hypothesis. It is expressed as

H0 : μ < 250

Answer:

Yes, because 0.002 < 0.01

Step-by-step explanation:

Step-by-step explanation

On the first graph, I made the graph too short but when x = 8, y= 10,

also this is only for the two graphs on the bottom because the first ones were examples

Answer:

The median {Q2} is 10

Q1 is 7+7/2 which is 7

Q3 is 15+12/2 which is 13.5

Step-by-step explanation:

Answer:

b

Step-by-step explanation:

its coreect