Expression is a trinonmial

Answer:

r = 3

Step-by-step explanation:

q = k / [tex]r^{2}[/tex]

k = q[tex]r^{2}[/tex] = 1.2 x 3 x 3 = 10.8

q = 10.8/[tex]r^{2}[/tex]

1.2 = 10.8/[tex]r^{2}[/tex]

r = [tex]\sqrt{10.8 /1.2}[/tex] = 3

As q is inversely proportional to r square the value of r is 1.66 when q is equal to 1.2

A ratio is a comparison between two similar quantities in simplest form.

Proportions are of two types one is the direct proportion in which if one quantity is increased by a constant k the other quantity will also be increased by the same constant 'k' and vice versa.

In the case of inverse proportion if one quantity is increased by a constant k the quantity will decrease by the same constant k and vice versa.

Given, q is inversely proportional to r square which is,

q ∝ 1/r².

q = k/r².

q = 30 when r = 3, From this we'll have the value of the constant of proportionality(k).

30 = k/9.

k = 30/9.

k = 10/3.

Now, q = 1.2 and k = 10/3.

Therefore,

1.2 = (10/3)/r².

r² = (10/3)×(1/1.2).

r² = 10/3.6.

r² = 2.77.

r = 1.66

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Answer:

[tex]226.2m^2[/tex]

Step-by-step explanation:

[tex]A_L=2\pi rh=2*\pi *4.5*8\\=226.19467\\=226.1947\\=226.195\\=226.2m^2[/tex]

Answer:

1/8 I think

Step-by-step explanation:

Answer:

The value of x is 0.624.

Property used: Symmetric property of equality

Step-by-step explanation:

The expression to be solved is:

[tex]f (x) = 2.5\cdot (6.25x+0.5)-11[/tex]

Compute the solution as follows:

[tex]f (x) = 2.5\cdot (6.25x+0.5)-11[/tex]

       [tex]=(2.5\times 6.25\ x)+(2.5\times 0.5)-11[/tex]

∵ Distributive property (a (b + c) = ab + ac)

       [tex]=15.625x+1.25-11\\=15.625x-9.75[/tex]

Substitute equation equal to 0 to compute the value of x as follows:

[tex]0=15.625x-9.75\\\\15.625x=9.75\\\\[/tex]

∵ Symmetric property of equality if a = b then b = a

[tex]x=\frac{9.75}{15.625}\\\\x=0.624[/tex]

Thus, the value of x is 0.624.

Answer:

lol

Step-by-step explanation:

1.)  2.5(6.25x + 0.5) = 11

​2.)  15.625x + 1.25 = 11  

3.)  15.625x = 9.75

​4.)  x = 0.624

Reason

1.)  Given

2.)  Distributive Property  

3.)  Subtraction Property of Equality

4.)  ​Division Property of Equality

Answer:

The first option

Step-by-step explanation:

In the image, we can notice that NQ is longer than PQ, similar to how JH is longer than NJ. Thus, NQ must be aligned with JH and PQ with JN. As PN and HN are clearly the longest for each triangle, those must be aligned as well.

All of the responses have NP and NH aligned.

The last response does not have NQ aligned with JH.

The second and third do not align PQ and JN.

The first option is our answer.

Answer:

B

Step-by-step explanation:

(-5,4)

To get from B to A, the x value increases 5 and the y value increases 5, for every one unit increase in x, y also increases by 1. 1/5 of the way is 1/5 times 5 = 1. Just increase both x and y by 1 to get (-5, 4)

-6+1 = -5 = x and 3 + 1 = 4 = y (-5,4) is the point 1/5 of the way from B to A

Answer:

I’m pretty sure it’s 6 but I’m not 100% sure

Step-by-step explanation:

Answer:

the answer is 6 can you mark me branilist

Step-by-step explanation:

Answer:

$181.20

Step-by-step explanation:

6% of $3,020 is $3,020. I don't really know how to explain it but yeah lol.

Answer:

Your answer is 181.2

Step-by-step explanation:

the number 3020 is 100% (because it's the output value of the task)

If 3020 is 100%, so we can write it down as 3020=100%.

We know, that x is 6% of the output value, so we can write it down as x=6%.

Now we have two simple equations:

3020=100%

x=6%

3020/x=100%/6%

Now we just have to solve the simple equation, and we will get the solution we are looking for.

3020/x=100/6

(3020/x)*x=(100/6)*x       (we multiply both sides of the equation by x)

3020=16.666666666667*x       (we divide both sides of the equation by) (16.666666666667) to get x

3020/16.666666666667=x

181.2=x

x=181.2

hope this helps

Give Brainliest if you please

Answer:

Step-by-step explanation:

Well Mr.Thomas has 50 dollars to spend so if you divide 2.50 from 50 you will get 20 so he can get 20 raffle tickets and still walk out with another 50 in his pocket.

Answer:

a. It is in standard form because the exponents are in order from highest to lowest.

Complete question:

a. It is in standard form because the exponents are in order from highest to lowest.

b. It is in standard form because the coefficients are in order from highest to lowest.

c. It is not in standard form because the constant should be the first term.

d. It is not in standard form because it can be further simplified.

Step-by-step explanation:

-24x^7-12x^2-9x+6

A polynomial is in standard form when the exponents are in order from highest to lowest. In the given expression , the exponent is in order x^7 and then x^2 and then x and constant.

Standard form does not depends on the coefficient of each each.

The given polynomial is in standard form because the exponent are in order from highest to lowest.

Answer:

A

Step-by-step explanation:

Answer:

smile mean laugh.

thank u

Answer:

Step-by-step explanation:

Hello!

The historical data suggests that the life expectancy in Argentina is equal to the life expectancy in Bolivia.

With the objective of testing if that it hasn't changed, the records of recently deceased people from Argentina and Bolivia were selected at random:

Group 1: Argentina

X₁: Years of life of a recently deceased Argentinian.

n₁= 265

X[bar]₁= 74.8 years

S₁= 4.1 years

Group 2: Bolivia

X₂: Years of life of a recently deceased Bolivian.

n₂= 300

X[bar]₂= 75.4 years

S₂= 4.3 years

The parameters of interest are the population means of the years of life of people in both countries:

H₀: μ₁ = μ₂

H₁: μ₁ ≠ μ₂

α: 0.05

The statistic to use is an approximate standard deviation, and since both samples are quite large, it is valid to use the sample standard deviations in place of the population standard deviations:

[tex]Z= \frac{(X[bar]_1-X[bar]_2)-(Mu_1-Mu_2)}{\sqrt{\frac{S^2_1}{n_1} +\frac{S_2^2}{n_2} } }[/tex]≈N(0;1)

[tex]Z_{H_0}= \frac{(74.8-75.4)-(0)}{\sqrt{\frac{16.81}{265} +\frac{18.49}{300} } }= -2.54[/tex]

The critical values for this test are:

[tex]Z_{\alpha /2}= Z_{0.025}= -1.96[/tex]

[tex]Z_{1-\alpha /2}= Z_{0.0975}= 1.96[/tex]

Using the critical value approach, the decision rule is:

If [tex]Z_{H_0}[/tex] ≤ -1.96 or if [tex]Z_{H_0}[/tex] ≥ 1.96, reject the null hypothesis.

If -1.96 < [tex]Z_{H_0}[/tex] < 1.96, do not reject the null hypothesis.

[tex]Z_{H_0}[/tex] ≤ -1.96 so the decision is to reject the null hypothesis.

So with a 5% significance level, there is enough evidence to reject the null hypothesis, you can conclude that the life expectancy in Argentina is different from the life expectancy in Bolivia.

I hope this helps!

Find the given attachments

Answer:

The solutions are

x = -1, 1, -2√2, and 2√2.

Step-by-step explanation:

Given the equation

x^4 - 9x² + 8 = 0

Let u = x², then the equation becomes

u² - 9u + 8 = 0

u² - u - 8u + 8 = 0

(u² - u) - (8u - 8u) = 0

u(u - 1) - 8(u - 1) = 0

(u - 8)(u - 1) = 0

u - 8 = 0

=> u = 8

Or

u - 1 = 0

=> u = 1

For u = 8

=> x² = 8

=> x = ±√8 = ±2√2

For u = 1

=> x² = 1

=> x = ±√1 = ± 1

Answer:

B

Step-by-step explanation:

Answer:

Its B

stuff:

ITS BBBBBBBBBBBBBBBBBBBB

Answer:

B

Step-by-step explanation:

Trust me on this, also can I have brainiest please?

Hope you do well! :D

Answer:

It's Positive

Step-by-step explanation:

Answer:

angle S

Step-by-step explanation:

You have to make the triangles congruent. Therefore, you have to flip one triangle vertically and horizontally. (To see the picture google choose the correct correspondence,  I am looking at the one with two triangles in the figure.) If you imagine putting them over top of each other, then U goes over S.

Sorry my answer was so late.

Answer:

The answer is going to be S

Step-by-step explanation:

Answer:

The 2 factors are -2 and 18.

Step-by-step explanation:

xy = -36

Let y = 0.5x - 11 so

x(0.5x - 11) = -36

0.5x^2 - 11x + 36 = 0

0.5(x^2 - 22x + 72) = 0

(x - 4)(x - 18) = 0

x = 4, 18.

Try x = 18:-

The 2 numbers which are factors of -36 must be  -2 and 18 because they fit the requirement  that 0.5(18) - 11 = 9 - 11 = -2.

Answer:

a) The p value is a probability always between 0 and 1 and represent the evidence in favor of the alternative hypothesis if it's a low value then we have enough evidence to reject the null hypothesis otherwise we FAIl to reject the null hypothesis

b) For this case the result is important because the parameter established by the Public Healt is incorrect ,we obtain a significant result so then there is enough evidence to conclude that the true proportion of children that have been vaccinated against measles is lower than 91%

Step-by-step explanation:

For this case the system of hypothesis are:

Null hypothesis:[tex]p=0.91[/tex]  

Alternative hypothesis:[tex]p < 0.91[/tex]  

When we conduct a proportion test we need to use the z statisitc, and the is given by:  

[tex]z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}}[/tex] (1)  

For this case after conduct the hypothesis we have the following p value obtained:

[tex] p_v = 0.0001[/tex]

Part a

The p value is a probability always between 0 and 1 and represent the evidence in favor of the alternative hypothesis if it's a low value then we have enough evidence to reject the null hypothesis otherwise we FAIl to reject the null hypothesis

Part b

For this case the result is important because the parameter established by the Public Healt is incorrect ,we obtain a significant result so then there is enough evidence to conclude that the true proportion of children that have been vaccinated against measles is lower than 91%

Answer:

scalene

Step-by-step explanation:

We know it isn't a right triangle because it doesn't satisfy the Pythagorean Theorem (9² + 16² ≠ 17²). Because the lengths of the sides are all different, it can't be an equilateral (all equal sides) or an isosceles (2 equal sides) either. Therefore, it is a scalene triangle (all 3 sides different). Hope this helps!

Answer:

1.d because you distribute the 6 to the y and then z so the equation would be 6y+6z

2.a because the commutative property says that no matter the order of the terms you will get the same product so 9x5 would be the same as 5x9

3.a because you distribute the 3 to the y and 5 so the simplifie dversion would be 3y+15

Hope this helps!

Answer:

138.5 and 147.5

Step-by-step explanation:

Set the two integers as x and x+9

Since the two integers add up to 286, set up the equation:

x+(x+9)=286

2x+9=286

2x=277

x=138.5

x+9=147.5

Answer:

89

Step-by-step explanation:

Answer:

-98

Step-by-step explanation:

Because the negative of the number is on the opposite side of a number line.

Answer: 40,000

Step-by-step explanation:

Rounding 39,918.23 to the nearest thousands is 40,000.

The given decimal number is 39,918.23.

We need to round the given decimal to the nearest thousand.

We follow the given steps to round numbers to the nearest whole number:

Step 1- We look at the number we want to round.

Step 2- As we are rounding our number to the nearest whole, we mark the digit in the one’s place.

Step 3- Now we look at the ‘tenths’ place (the digit to the right of the decimal point).

Step 4- (i) If the digit in the tenths column is 0, 1, 2, 3 or 4, we will round down the number from one place to the nearest whole number.

(ii) If the digit in the tenths column is 5, 6, 7, 8 or 9, we will round up the number at the one’s place to the nearest whole number.

Step 5- Remove all the digits after the decimal point. The left-out number is the desired answer.

Now, in the given decimal, the number in the thousand places is 9, which is greater than 5, and then the number becomes 40,000.

Therefore, rounding 39,918.23 to the nearest thousands is 40,000.

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Answer:

I don't knoooooooooooooooow

Answer: It is not long enough.

Step-by-step explanation:

Ok, we know that the "rule" for the distance between the base of the ladder and the wall is that, for each 4 ft that the ladder rises, we must have 1 foot between the base of the ladder and the wall.

then, for a 50 feet wall, the ladder must rise 50 ft, this means that the base of the ladder must be:

50ft/4 = 12.5 feet away from the wall.

Now, these two values can be thought as the cathetus of a triangle rectangle, and the ladder will be the hypotenuse, then we have (using Pythagoras theorem)

H = √(12.5ft^2 + 50ft^2) =  51.54 ft

So the theoretical safe value is bigger than the one we have, this means that the 51-foot ladder is not long enough.

Answer:

The amount of water he should pour in ounces(that is the only units the cup measures) is 16 + 4 = 20 ounces

Step-by-step explanation:

He is told to dissolve a medicine he has in 1 pint 4 ounces of water . He has a measuring cup marked in ounces .This means he can only measure the water quantity in ounces.

He definitely have to convert the pints to ounces.

1 pint = 16 ounces

Recall he has to dissolve the medicine in 1 pint 4 ounces of water.

Since 1 pint is equals to 16 ounces therefore, 16 ounces + 4 ounces  = 20 ounces.

The amount of water he should pour in ounces(that is the only units the cup measures) is 16 + 4 = 20 ounces

Answer: D. To produce treatment groups with similar characteristics

Step-by-step explanation:

By using randomization in sampling, the Sample would be more representative of the Population it is based off of because different demographic characteristics may be picked.

This leads to a situation where the groups have similar characteristics between themselves thereby making it easier for comparison. For example, Group 1 would have certain types of people that will be represented in Group 2 and Group 3 as well. That way the effects of the drug can be properly studied as it affects different people. For instance, say there are 4 obese people in a sample of 10, instead of group one having all obese people, randomization may be able to give group one, 2 obese people and 2 obese people to group 2 as well. That way when comparing, the effects of the drug on the two groups is easier to be compared because the two groups have similar people.

Answer:

The number is 240

Step-by-step explanation:

Is means equals and of means multiply

30 = 12.5% * N

Change to decimal form

30 = .125 N

Divide each side by .125

30/.125 = .125N/.125

240 = N

Answer:

240

Step-by-step explanation:

30=.125x

solve