How many real solutions are there?

Answer:

z>-9

Step-by-step explanation:

Answer: z > -9

Step-by-step explanation:

[tex]\frac{-2z-3}{3} < 5[/tex]     multiply each side by 3  to get  

-2z -3 < 15    now add  3 to both sides

      +3   +3

-2z < 18    Divide both sides by -2. Since your dividing by a negative number the inequality sign will change

z> -9

Answer:

x>-12

Step-by-step explanation:

first you would simplify by multiplying -7 from the terms in the parenthesis and then you would get [tex]\frac{5x}{6} +3>\frac{-7x}{6} -21[/tex] then you would add 21 to both sides to get rid of the -21 and you would get [tex]\frac{5x}{6} +24>\frac{-7x}{6}[/tex] then you would subtract 5/6 from both sides to get rid of the 5/6 so you get 24>[tex]\frac{-12x}{6}[/tex] and then you would simplify by multiplying 6 to both sides so you get 144>-12x then you would divide both sides by -12 (note that you have to flip the greater than or less then sign after dividing by a negative number) so you get -12<x or x>-12

Answer:

[tex]\mathbf{\iiint_W (x^2+y^2) \ dx \ dy \ dz = \dfrac{2}{15}}[/tex]

Step-by-step explanation:

Given that:

[tex]\iiint_W (x^2+y^2) \ dx \ dy \ dz[/tex]

where;

the top vertex = (0,0,1) and the  base vertices at (0, 0, 0), (1, 0, 0), (0, 1, 0), and (1, 1, 0)

As such , the region of the bounds of the pyramid is: (0 ≤ x ≤ 1-z, 0 ≤ y ≤ 1-z, 0 ≤ z ≤ 1)

[tex]\iiint_W (x^2+y^2) \ dx \ dy \ dz = \int ^1_0 \int ^{1-z}_0 \int ^{1-z}_0 (x^2+y^2) \ dx \ dy \ dz[/tex]

[tex]\iiint_W (x^2+y^2) \ dx \ dy \ dz = \int ^1_0 \int ^{1-z}_0 ( \dfrac{(1-z)^3}{3}+ (1-z)y^2) dy \ dz[/tex]

[tex]\iiint_W (x^2+y^2) \ dx \ dy \ dz = \int ^1_0 \ dz \ ( \dfrac{(1-z)^3}{3} \ y + \dfrac {(1-z)y^3)}{3}] ^{1-x}_{0}[/tex]

[tex]\iiint_W (x^2+y^2) \ dx \ dy \ dz = \int ^1_0 \ dz \ ( \dfrac{(1-z)^4}{3}+ \dfrac{(1-z)^4}{3}) \ dz[/tex]

[tex]\iiint_W (x^2+y^2) \ dx \ dy \ dz =\dfrac{2}{3} \int^1_0 (1-z)^4 \ dz[/tex]

[tex]\iiint_W (x^2+y^2) \ dx \ dy \ dz =- \dfrac{2}{15}(1-z)^5|^1_0[/tex]

[tex]\mathbf{\iiint_W (x^2+y^2) \ dx \ dy \ dz = \dfrac{2}{15}}[/tex]

Step-by-step explanation:

Sales tax = $7.65

Explanation:

To find the sales tax, you would find 9% of $85

$85×9÷100 (You can reduce 85 and 100 because they have a common factor of 5)

$17×9÷20 (Multiply 9×17)

153÷20 = $7.65

Answer:

7.65

Step-by-step explanation:

Step-by-step explanation:

We need to write the given expression in the form of [tex]7^n[/tex] and the expression is [tex](7^3)^3[/tex].

The property is : [tex](x^n)^m=x^{nm}[/tex]

We have, x = 7, n = m = 3

So,

[tex](7^3)^3=7^{3\times 3}\\\\=7^9[/tex]

Therefore, the value of n is 9.

Answer:

17

Step-by-step explanation:

Because 10+5=15+2=17

Answer:

0

Step-by-step explanation:

Answer:

[tex]7x^2 - 3y + 9[/tex]

Step-by-step explanation:

Hey there!

Well to solve the given,

2y - y + 7 - 1 + 3 + 7x^2 - 4y

We need to combine like terms

[tex]2y - y + 7 - 1 + 3 + 7x^2 - 4y\\7x^2 - 3y + 9\\[/tex]

Hope this helps :)

Answer:

7x^2 - 3y + 9

Step-by-step explanation:

   2y - y + 7 - 1 + 3 + 7x^2 - 4y          [Combine like terms]

= (2y - y - 4y) + (7- 1 + 3) + 7x^2

= -3y + 9 + 7x^2                 [Order the terms from most exponents to least]

= 7x^2 - 3y + 9

Answer:

I answered the 1st one on your other post

2nd: 1/8

3rd: I don't know anything about inchwe study in cm so I don't know the answer

Step-by-step explanation:

we throw a coin. it has 2 probabilities: heads or tails

each probability is 1/2

1st throw 1/2

2nd throw 1/2

3rd throw 1/2

as all these throws are independent from one another, we put × between them. so: 1/2 ×1/2 ×1/2= 1/8

Answer:

Kindly check explanation

Step-by-step explanation:

Given the following instructions :

Choose 4 numbers from the whole numbers 0 - 10

Note : Repetition is allowed

Choose 4 numbers with the smallest possible standard deviation.

The smallest possible value of standard deviation obtainable is 0;

Hence in other to obtain a standard deviation value of 0, then;

The mean squared deviation value must be zero (0)

Σ(X - mean)^2 = 0

To achieve this, the values of X and the mean must be the same.

Hence all 4 numbers (X) must be the same in other to have a mean value which is equal to X

For instance :

If X = 3, 3, 3, 3 (since Repetition is allowed)

Man value = (3+ 3+ 3+ 3) / 4 = 12 / 4 = 3

Σ(3 - 3)² = 0 for all values of x

√Σ(x - mean)² / n = 0 ; if all values of x are the Same

n = Number of observations

A possible list of values is (3,3,3,3)

Answer:

>0.95

Step-by-step explanation:

This probably refers to a normal distribution. In a normal distribution, according to the empirical rule,

68% of observed data falls within 1 standard deviation of the mean

95% falls within 2 standard deviations of the mean

99.7% falls within 3 standard deviations of the mean

In this case, the observed data is distance and the average figure for all observed distances is the mean distance.

So, the probability that a/any distance observed exceeds the mean distance by more than 2 standard deviations is >95%

In other words, the probability is >0.95

Answer:

12345

Step-by-step explanation:

Answer:

Step-by-step explanation:

If n=1 then 32n+7=16=2(8) so true when n=1

Assume true for n=k so

8|32k+7

If n=k+1

32(k+1)+7

32k+2+7

If 32n+7 is divisble by 8 then 32n+7=8A where A∈Z, and thus 32k+2+7=8B where B∈Z

32×32k+7

32×(8A)=72A

72A=8(9A)=9B

So by induction 32n+7 is divisibe by 8 ∀n∈N

Answer:

$606.41

Step-by-step explanation:

1504 W * (1 kW)/(1000 W) * 0.14 $/(kW*h) * 4 months * (30 days)/(month) * (24 hours)/day =

= $606.41

Answer:

47 degrees

Step-by-step explanation:

The two angles shown are "vertical angles" and thus are equal.

Thus, 2x + 3 = x + 50

Combining like terms, we get:

x = 47 degrees

Answer:

2hours and 30minutes

Step-by-step explanation:

6mph for 5 miles, would be 10 minutes per mile(in an hour because of 60). Only five were completed to itd take 50 minutes. 3mph for 5hours would take 1hr and 40 minutes because 3miles would take 1 hour which would make one mile take 20 minutes so you add the two twenties(for the last two miles) to get 40. Then u add them together. (50min+60min+40min)

Answer:

13.63 miles per hour

Step-by-step explanation:

100 yards / 15 sec  converted to miles per hour

100 yards x 60 sec   x   60 min   x   1 mile        =  13.63 miles/hr

   15 sec        1 min          1 hr           1760 yards

the mistake on Mrs Dukes is the conversion from miles to yards.

1 mile = 1760 yards NOT 5280 yards

Answer:

120 minutes

Step-by-step explanation:

The lowest number that all three trains times can evenly go into is 120.  60 is not divisible by 8, but 120 is.  So is 12 and 10, so 120.

Answer:

58 degrees

Step-by-step explanation:

subtract 122 from 180

the ans of your above questions is 58°

Answer:

Commutative Property

Step-by-step explanation:

Additive Identity: If you add a real number to zero or add zero to a real number, then you get the same real number back.

Additive Inverse: When you add the same number but reversed sign, you get 0.

Commutative Property: a + b = b + a

Addition distributive property: a(b+ c) = ab + ac.

In this case, we use the commutative property:

27 + 15 + 3 + 5 = 27 + 3 + 15 + 5.

We know that 27 + 3 = 30 and 15 + 5 = 20, so we get 50 quickly using mental math.

Answer:

Communitive

Step-by-step explanation:

Answer:

The answer is -6

Step-by-step explanation:

Answer:

A/( 1+rt) = P

Step-by-step explanation:

A = P ( 1+rt)

Divide each side by ( 1+rt)

A/( 1+rt) = P ( 1+rt)/(1+rt)

A/( 1+rt) = P

Answer:

A) √61

Step-by-step explanation:

a²+b²=c²

(4-(-2))²+(5-0)²=c²

6²+5²=c²

36+25=c²

61=c²

c=√61

Answer: y=4

Step-by-step explanation:

Step 1: Subtract 10 from both sides.

8y+10−10=42−10

8y=32

Step 2: Divide both sides by 8.

8y

8

=

32

8

y=4

Answer:

8y + 10 =42

8y = 42-10

8y = 32

8y/8 = 32/8

y = 4

Answer: x=12

Step-by-step explanation:

5x=4x+12

move all terms containing x to the left side of the equation

subtract 4 from 5

1x=12

x=12

Answer:

A. It is moved up 3 units

Step-by-step explanation:

The 3 in 2x+3 tells you that the line is moved up 3 units

Answer:

$3050.48

Step-by-step explanation:

If 4% is compounded quarterly, that means it's 1% every quarter. since we have 5 years, that's 1.01^20, which is approx. 1.2202. We multiply this by the orignal $2500, so our investment at the end of 5 years is $3050.48 (rounded to nearest cent)

The amount of money that Tia's investment would be worth at the end of 5 years is equal to $3050.5.

Given the following data:

To determine how much is the investment worth at the end of 5 years:

Mathematically, compound interest is given by the formula:

[tex]A = P(1 + \frac{r}{n})^{nt}[/tex]

Where;

Substituting the given parameters into the formula, we have;

[tex]A = 2500(1 + \frac{0.04}{4})^{4\times 5}\\\\A = 2500(1 +0.01)^{20}\\\\A = 2500(1.01)^{20}\\\\A = 2500(1.2202)[/tex]

Future value, A = $3050.5

Read more: https://brainly.com/question/22339845

Answer:

The null hypothesis gets rejected for the p-value of 0.04 and 0.042.

Step-by-step explanation:

We are given the level of significance of [tex]\alpha[/tex] = 0.01 or 1%. And also we are provided with the different p-values.

As we know that; the decision rule for rejecting the null hypothesis is given by;

(i) The P-value given is 0.002.

Here, the P-value is less than the level of significance as 0.002 < 0.01, then we have sufficient evidence to reject our null hypothesis. So, the null hypothesis gets rejected.

(ii) The P-value given is 0.009.

Here, the P-value is less than the level of significance as 0.009 < 0.01, then we have sufficient evidence to reject our null hypothesis. So, the null hypothesis gets rejected.

(iii) The P-value given is 0.04.

Here, the P-value is more than the level of significance as 0.04 > 0.01, then we have insufficient evidence to reject our null hypothesis. So, the null hypothesis does not get rejected.

(iv) The P-value given is 0.042.

Here, the P-value is more than the level of significance as 0.042 > 0.01, then we have insufficient evidence to reject our null hypothesis. So, the null hypothesis does not get rejected.