What’s the correct answer for this?

Answer:

  x^3 +3x^2 +6x

Step-by-step explanation:

Eliminate parentheses using the distributive property. Collect terms. Standard form has the exponents decreasing.

  = 8x -6x^3 +5x^2 -2x^2 -2x +7x^3

  = x^3(-6 +7) +x^2(5 -2) +x(8 -2)

  = x^3 +3x^2 +6x

Answer:

(st)(6)= s(6) * t(6)

Step-by-step explanation:

(st)(6)

(st)(x)= s(x) * t(x) we multiply it

(st)(6)= s(6) * t(6)

Hope this helps.

Answer:

a^b/a^c = a^b-c

9^7/9^5=9^7-5

=9^2 ( ANSWER )

Step-by-step explanation:

please mark me BRAINLIEST

Answer:

X+8/100x ; X+0.08x

Step-by-step explanation:

Let x = last month's earning

8% =8/100 or 0.08

8/100 of x= 8/100x 008 of x=0.08x

last month + 8/100 of last month:

x+8/100x

last month + 0.08 of last month:

x+0.08x

Those are your two answers. I am sorry if they are wrong. I am not the best at math, but I tried supplying the answers as best as I could.

Answer:Monthly payment is $682.06

Step-by-step explanation:

Answer:

The formula to calculate the final cost:

C = 130000 x (1  + (4.8/100)/12)^(30 x 12) = 547116.69

Minimum payment each month:

M = 547116.69/(30 x 12) = 1519.77

Interest they have to pay: 547116.69 - 130000 = 417116.69 dollar

Hope this helps!

:)

Answer:

you add up all of the items and then divide by the total number of items.

Step-by-step explanation:

For example,

Total/Number of Items = Average

Set: 1,6,4,5

(1+6+4+5)/4

16/4 = 4

4 is the average of the items above.

Good luck!!

Answer:

12/25

Step-by-step explanation:

multiply the fractions.

multiply the numbers.

Answer:

[tex] \mu -2\sigma = 915.428 - 2* 22.87=869.69[/tex]

[tex] \mu +2\sigma = 915.428 + 2* 22.87=961.17[/tex]

And the best option would be:

4. Minimum: 869.69; maximum: 961.17

Step-by-step explanation:

We can assume that the variable of interst X is distributed with a binomial distribution and we can use the normal approximation.

For this case the mean would be given by:

[tex] E(X) = np = 2136 *(\frac{3}{7})= 915.428[/tex]

And the standard deviation would be:

[tex] \sigma = \sqrt{2136*(\frac{3}{7}) (1-\frac{3}{7})} =22.87[/tex]

And if we find the limits we got:

[tex] \mu -2\sigma = 915.428 - 2* 22.87=869.69[/tex]

[tex] \mu +2\sigma = 915.428 + 2* 22.87=961.17[/tex]

And the best option would be:

4. Minimum: 869.69; maximum: 961.17

Answer:

Shown in the explanation below,

Step-by-step explanation

Mary had 1 3/4 pounds

Mary friend eat 3/4 blackberry which is

3/4. × 7/4 = 21/ 16 = 1 5/16

Answer:

49

Step-by-step explanation:

x^2-14x+c

Take the coefficient of x

-14

Divide by 2

-14/2 = -7

Square it

(-7)^2

49

This is the number you add

Answer: your answer would be 5/16th :)

Answer:

5/16

Step-by-step explanation:

The common ratio is -5/2 / 5 = -1/2

Xn = 5 × (-1/2)^(n-1)

X5 = 5 × (-1/2)^(5-1)

X5 = 5 × (-1/2)^(4) = 5/16

Answer:

500

Step-by-step explanation:

percentage is the quantitative way to express number of things out of 100 things.

For example : 20% of bananas are ripe.

it means that if there are 100 apples, 20 are ripe.

Let the  total number of cupcakes sold that day be X

20% of total number of cupcakes sold = 20% of X = (20/100) * X __1

It is given that 20% of total number of cupcakes sold is equal to 100

Thus the equation 1 should be equal to 100.

Writing it mathematically we have

(20/100) * X = 100

=> 0.2X = 100

=> X = 100/0.2 = 500

500  cupcakes did the bakery sell that day.

Answer:

  -7

Step-by-step explanation:

l = kh . . . . . l is proportional to h with proportionality constant k

112 = k·(-16) . . . . . .  use the given numbers

k = -112/16 = -7  . . . divide by the coefficient of k

The constant of proportionality is -7.

Answer:

D about 44%

Step-by-step explanation:

just took the tests

Using the percentage concept and the given table, it is found that about 39% of males supported Wilson.

The percentage of an amount a over a total amount b is given by a multiplied by 100% and divided by b, that is:

[tex]P=\frac{a}{b}\times 100%[/tex]

In this problem, males are 46% of the sample, and 18% are males that supported Wilson,

[tex]P=\frac{18}{46} \times 100=39[/tex]

About 39% of males supported Wilson.

To learn more about the percentage of visit:

https://brainly.com/question/24304697

#SPJ2

Answer:

117 yards

Step-by-step explanation:

A field is in the shape of a rectangle

The distance from one corner of the field to the opposite corner represent the diagonal of a rectangle

The diagonal of a rectangle is calculated using

D^2= l^2 + w^2

Where,

D=diagonal

L=length=100 yards

W=width=60 yards

D^2= l^2 + w^2

=100^2+60^2

=10,000+3,600

=13,600

D^2=13,600

D=√13,600

=116.62 yards

Approximately

117 yards

Answer:

177 yeard d

Step-by-step explanation:

the approximate distance is 177 yeard

Answer:

Caroline gets £12

Step-by-step explanation:

Let Caroline share be x

Let Sarah share be y

Let gavyn share be z

X = 2y

Y = 3z

X+ y + z = 20

X = 6z

Y = 3z

6z + 3z +z = 20

10z= 20

Z= 2

Y = 3z

Y= 3*2

Y= 6

X= 6z

X= 6*2

X= 12

Caroline gets £12

Answer:

7 rounds

Step-by-step explanation:

After the 5th round, 8 divide by 2 equals 4. After the 6th round, 4 divided by 2 equals 2. After the 7th round, 2 divided by 2 equals 1 determining a winner. After every round, the number of people is decreased by dividing by 2.

Hope this helps!!! PLZ MARK BRAINLIEST!!! GG’s

Answer:

£576

(would really, reallly appreciate the brainliest)

Step-by-step explanation:

8 * 60 * 3/5 + 12 * 60 * 2/5

The mean of a set of numbers is the sum divided by the number of terms.

Answer: 22.9

Answer:

YOU ADD AND DIVIDE FOR THE MEAN

Step-by-step explanation:

add 20 + 20 + 20 + 22 + 22 + 24 + 26 + 26 + 26 equaling to = 206

divide by 9 equaling to = 22.88

Answer:

Applied the definition and the limit.

They had the same result, so the function is continuous.

Step-by-step explanation:

At function f(x) is continuous at x = a if:

[tex]\lim_{x \to a} f(x) = f(a)[/tex]

In this question:

[tex]f(x) = x^{2} + 5(x-2)^{7}[/tex]

At x = 3.

[tex]\lim_{x \to 3} x^{2} + 5(x-2)^{7} = 3^{2} + 5(3-2)^{7} = 14[/tex]

[tex]f(3) = 3^{2} + 5(3-2)^{7} = 14[/tex]

Since [tex]\lim_{x \to 3} f(x) = f(3)[/tex], f(x) is continuous at x = 3.

Answer:

predictive value of a positive test = 18.18%

predictive value of a negative test = 94.03%

Step-by-step explanation:

Sensitivity = 60% = 0.6

Specificity = 70% = 0.7

Let True Positive = TP

True Negative = TN

False Negative = FN

[tex]Sensitivity = \frac{TP}{TP + FN} \\0.6 = \frac{TP}{TP + FN} \\0.6TP + 0.6FN = TP\\0.4TP = 0.6FN\\TP = 1.5 FN[/tex]

[tex]Specificity = \frac{TN}{TN + FP} \\0.7 = \frac{TN}{TN + FP} \\0.7TN + 0.7FP = TN\\0.7FP = 0.3 TN\\TN = 7/3 FP[/tex]

Prevalence = 10% = 0.1

Three hundred people are screened, [tex]T_{total} = 300[/tex]

Total number of people having the disease, [tex]T_{disease} = ?[/tex]

[tex]Prevalence = \frac{T_{disease} }{T_{total} } \\0.1 = \frac{T_{disease} }{300 }\\T_{disease} = 30[/tex]

[tex]T_{disease} = TP + FN\\30 = TP + FN[/tex]

But TP = 1.5 FN

30 = 1.5 FN + FN

30 = 2.5 FN

FN = 30/2.5

FN = 12

TP = 1.5 FN = 1.5 * 12

TP = 18

[tex]FP + TN = T_{total} - T_{disease} \\FP + TN = 300 - 30\\FP + TN = 270\\FP + \frac{7}{3} FP = 270\\\frac{10}{3} FP = 270\\FP = 27 * 3\\FP = 81[/tex]

81 + TN = 270

TN = 189

To calculate the Predictive value of positive test (PPT)

[tex]PPT = \frac{TP}{TP + FP} * 100\\PPT = \frac{18}{18+81} * 100\\PPT = \frac{18}{99} * 100\\PPT = 18.18 \%[/tex]

To calculate the Predictive value of negative test (PNT)

[tex]PPT = \frac{TN}{FN + TN} * 100\\PPT = \frac{189}{189+12} * 100\\PPT = \frac{189}{201} * 100\\PPT = 94.03 \%[/tex]

Answer:

28 MEN

Step-by-step explanation:

X + X-3=59

2X-3=59

2X=62

X=31

MEN=31-3=28

Answer: 18 cm

Step-by-step explanation:

Length means the same thing as “long” so whatever the length is, that’s how long it is. In this case, 18 cm is the length, so that’s how long it is.

Answer:

w = 7u/6

u = 6w/7

m = 2n/-9

n = -9m/2

Step-by-step explanation:

4u + 8w = -3u + 2w

4u - 4u +8w = -3u - 4u +2w

8w -2w = -7u + 2w - 2w

6w = -7u

w = 7u/6

u = 6w/7

AND

-2m - 5n = 7m - 3n

-2m -7m -5n = 7m -7m -3n

-9m -5n +5n = -3n +5n

-9m = 2n

m = 2n/-9

n = -9m/2

Answer:

The answer is 9

Step-by-step explanation:

if u 170-125= 45 then u divide 5 into 45 and u get 9

Answer:

775 ml

Step-by-step explanation:

Answer:

775

Step-by-step explanation:

25 plus 50 equals 75.700 plus 75= 775 ml.

Answer:

x + 61 = 411

Step-by-step explanation:

Let x = the number of adult tickets sold

Let x + 61 = the number of student tickets sold

x + x + 61 = 761

2x = 700

x = 350

Answer:

d) No, this would not be unusual because 46% is only 1.2 standard errors from 40%.

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

If the z-score is higher than 2 or lower than -2, X is unusual.

In this question:

Mean = 40%. So [tex]\mu = 0.4[/tex]

Standard error = 5%. So [tex]\sigma = 0.05[/tex]

Is 46% unusual?

We have to find Z when X = 0.46. So

[tex]Z = \frac{X - \mu}{\sigma}[/tex]

[tex]Z = \frac{0.46 - 0.4}{0.05}[/tex]

[tex]Z = 1.2[/tex]

1.2 is lower than 2, that is, it is only 1.2 standard deviations from the mean.  So 46% is not unusual.

So the correct answer is:

d) No, this would not be unusual because 46% is only 1.2 standard errors from 40%.

Answer:

0.96 in^3

Step-by-step explanation:

Are those the only three choices? Anyway, I hope this helps