what is the soultion to this equation? 9^x-1=2 A. -1/2 B. 1/2 C. 1 D. 2​

Answer:

X<3

Step-by-step explanation:

  6x−6+6<12+6

6x<18

Step 2: Divide both sides by 6.

6 divded by 6 = 1

18 divided by 6= 3

therefore the answer would be

X<3                  

Answer:

x = 1 or less

Step-by-step explanation:

12 - 6 = 6

6x = 6 or less

Divide each side by 6:

6x/6 = 6 or less/6

x = 1 or less

Answer:

C

Step-by-step explanation:

tan V = [tex]\frac{opposite}{adjacent}[/tex] = [tex]\frac{UT}{UV}[/tex] = [tex]\frac{8}{15}[/tex] → C

Question

The data in this question will be utilized for the next three questions. The number of pets a group of students has, are given below.

Number of pets:        0-2    2-4   4-6   6-8   8-10   10-12    12-14

Number of students:  1        2      1        5       6         2           3

Calculate

(1) Mean      (2) Sample Variance    (3) Sample Standard Deviation

Answer:

[tex](1)[/tex] [tex]\bar x = 8.1[/tex]

[tex](2)[/tex] [tex]\sigma^2 = 6.341[/tex]

[tex](3)[/tex] [tex]\sigma = 2.518[/tex]

Step-by-step explanation:

Given

The above data

First, we calculate the class midpoint (x)

Pets:  [tex]0-2[/tex]    [tex]2-4[/tex]   [tex]4-6[/tex]   [tex]6-8[/tex]   [tex]8-10[/tex]   [tex]10-12[/tex]    [tex]12-14[/tex]

x           1           3          5       7           9          11          13

f:           1            2         1        5           6         2           3

The class midpoint (x) is calculated by the average of each group.

For pets: 0 - 2.

[tex]x = \frac{0 + 2}{2}= \frac{2}{2} = 1[/tex]

The same is done for other groups.

Solving (a): Mean

[tex]\bar x = \frac{\sum fx}{\sum f}[/tex]

This gives:

[tex]\bar x = \frac{1 * 1 + 3 * 2 + 5 * 1 + 7 * 5 + 9 * 6 + 11 * 2 + 13 * 3}{1 + 2 + 1 + 5 + 6 + 2 + 3}[/tex]

[tex]\bar x = \frac{162}{20}[/tex]

[tex]\bar x = 8.1[/tex]

Solving (b): Sample Variance

This is calculated as:

[tex]\sigma^2 = \frac{\sum(x_i - \bar x)^2}{\sum f - 1}[/tex]

So:

[tex]\sigma^2 = \frac{(1 - 8.1)^2+(3 - 8.1)^2+(5 - 8.1)^2+(7 - 8.1)^2+(9 - 8.1)^2+(11 - 8.1)^2+(13 - 8.1)^2}{20 - 1}[/tex]

[tex]\sigma^2 = \frac{120.47}{19}[/tex]

[tex]\sigma^2 = 6.341[/tex]

Solving (c): The sample standard deviation

This is calculated as:

[tex]\sigma = \sqrt{\sigma^2[/tex]

[tex]\sigma = \sqrt{6.341[/tex]

[tex]\sigma = 2.518[/tex]

Answer:

m<EDA=35°

m<DAE=35 diagonal bisect it

Step-by-step explanation:

m<AED=180-2×35=110°(by sum of interior angle of the triangle)

m<BCE=mDAE=35° alternate angle

Step-by-step explanation:

Circumference=22π

2πr=22π

r=11 in.

Area=121π in.²

Hope it helps you

19.31

19.30+0.001 = 19.31

Answer:

Step-by-step explanation:

$12(20b/$48)=5b

Answer:

hey, the answer is D 443.73

Step-by-step explanation:

Answer:

it can be taken like this

5 y^2/2= 2.5 y^2

Answer:

Students born in 2000= 300*(1/4)=75 students

Students born in 1999= 75*2=150 students

Students born in 2001=150*(1/3) =50 students

Students born in 1998=50*(1/2) =25 students

Answer:

aiwans its blu

Step-by-step explanation:

ais djdmsm djfn

Answer:

C

Step-by-step explanation:

The population ratio is 150/175

If you divide the top of the fraction and the bottom of the fraction by 25, you get 6/7

So in keeping with that ratio, You should use 6 boys and 7 girls. The answer is  C.

Answer:

sin A = [tex]\frac{15}{17}[/tex]

cos A = [tex]\frac{8}{17}[/tex]

tan A = [tex]1\frac{7}{8}[/tex]

Step-by-step explanation:

sine = [tex]\frac{ooposite}{hypothenuse}[/tex]

sine A = [tex]\frac{15}{17}[/tex]

cosine = [tex]\frac{adjacent}{hypothenuse}[/tex]

cos A = [tex]\frac{8}{17}[/tex]

tan = [tex]\frac{opposite}{adjacent}[/tex]

tan A = [tex]\frac{15}{8} = 1\frac{7}{8}[/tex]

Step-by-step explanation:

answer: a) both x are 16, it is an equalatrial triangle

b) (mark as the brainliest and i"ll give you the answer

Answer:

22

Step-by-step explanation:

You can use division because the angles are the same:

From the first one to the second you divide by 2

16/2=8

So that means x/2=11

So x=22

Answer:

multiply that what my teacher said do

Step-by-step explanation:

Answer:

5

Step-by-step explanation:

You will need the distance formula. [tex]d = \sqrt{(x_2 - x_1)^2 + (y_2-y_1)^2}\\[/tex]

([tex]x_{1}[/tex], [tex]y_{1}[/tex]) ([tex]x_{2}[/tex], [tex]y_{2}[/tex])

Now plug in the two points into the distance formula.

d= [tex]\sqrt{(2-6)^{2}+(1-4)^{2} }[/tex]

d= 5

Answer:

1. 3^7/3^2

=3^(7-2)

=3^5

Now 3^5*3^5

=3^(5+5)

=3^10

2. (2^2)^3

=2^(2*3)

=2^6

(2^6)*(3^6)*(5^6)

Step-by-step explanation:

Hope this helps <3

If you like my answer pls brainly

Answer:

angle BED and angle DEB are the answers.

Answer:

c. 24/25

Step-by-step explanation:

cos= adj./hyp.

in this case it is 24 adj. and 25 hyp.

Answer:

range: {-4,0,12,20}

Step-by-step explanation:

these values are the y-values for the specific four domain values given

Answer:

120th caller

Step-by-step explanation:

According to the problem, calculation of the given data are as follows,

$100 bill = 30th caller

Movie tickets = 40th caller

So, to find out first to win both prizes, we will use LCM method,

LCM of 30 and 40 =       10 | 30 , 40

                                            | 3    , 4

LCM of 30 and 40 = 10 × 3 × 4 = 120

Hence, 120th caller will be the first to win both prizes.

Answer:

Step-by-step explanation:

Answer:

5)B 6)A 7)C are the answers I believe.

Answer:

Step-by-step explanation:

95 850-9 580=86270

R 86 270 is still owed for the car

Hope it helps!

:D

Answer:

x = -12

Step-by-step explanation:

3/4x + 12 = 3

3/4x = -9

3x = -36

x = -12

Answer:

x = 9

Step-by-step explanation:

Given

2(x + 5) = 3x + 1 ← distribute left side

2x + 10 = 3x + 1 ( subtract 2x from both sides )

10 = x + 1 ( subtract 1 from both sides )

9 = x