these are fractions. Help plz will give brainly

Answer:

21.8 cm

Step-by-step explanation:

[tex] \\ 180 - 75 - 31.8 = 37.2 \\ \frac{ \sin(75) }{22} = \frac{ \sin(31.8) }{12} = \frac{ \sin(73.2) }{a} \\ a = \frac{22 \times \sin(73.2) }{ \sin(75) } = \\ a = \frac{21.06}{0.9659} = 21.8[/tex]

Answer:

Since the calculated value of Z= 19.029 is much  greater than Z (0.05) = 1.645 and falls in the rejection region we reject the null hypothesis and conclude that mean of teenagers spending time on phone per week  has increased.

Step-by-step explanation:

1) Formulate the null and alternate hypothesis as

H0 : μ≤ 8.5  against the claim Ha:  μ > 8.5

2) Choose the significance level ∝ =0.05

3) The test statistic under H0  is

Z= x`-  μ/ s/√n

4) The rejection region is Z≥ Z(0.05)= 1.645

5) Computing the value of Z from sample information we get

Z= 10.5-8.5/ 2.35/ √500

Z= 2/ 2.35/ 22.361

Z= 19.029

Since the calculated value of Z= 19.029 is much  greater than Z (0.05) = 1.645 and falls in the rejection region we reject the null hypothesis and conclude that mean of teenagers spending time on phone per week  has increased.

Answer:

4 grand children

Step-by-step explanation:

Answer:

6 grandkids

Step-by-step explanation:

fernando has 2 kids and each had their own sets of kids so

1 fernando's kid     1 fernando's kid

2 grandchildren      2 grandchildren

                           =4 grandchildren in total

you said the grandchildren had kids as well so

2+4=6

Hey blink!!!!!!! second one is your answer

Answer:

2/8

Step-by-step explanation:

I think this is subtraction (if not just tell me i'll edit)

6/8 - 2/4 = 6/8 - 4/8 = 2/8

Answer:

4/8

Step-by-step explanation:

2/4 is equivalent to 4/8

She was 2/8 left over btw

Answer:

12 min each student

Step-by-step explanation:

x= 139°

180-41= 139°

hope this helped:)

Answer:

3 2/5 cups remaining

Step-by-step explanation:

To subtract fractions, they need a common denominator. I am using 5.

7 is equal to 35/5. Make 3-3/5 into an improper fraction of 18/5.

Now subtract: 35 - 18 = 17. There is 17/5 remaining.

Make it into a mixed number and you will get 3 2/5 remaining.

Answer: D.rotation 270 counterclockwise about the origin

Step-by-step explanation:

Answer:

13.857142

Step-by-step explanation:

Took a lot of math.

Answer:

15w

Step-by-step explanation:

5+10=15 ..........,................ I think.

Answer:

I think 1, 4, 5 and 7

Step-by-step explanation:

Answer:

Step-by-step explanation:

Let b>a

b-a=63

b=63+a

a+b=111, substituting 63+a from above in this equation gives you

a+63+a=111

2a+63=111

2a=48

a=24, since b=63+a

b=63+24

b=87 so the two numbers are

24 and 87

Answer:

His savings will last 2 months

Step-by-step explanation:

Kris has $3500

he has to pay $1300 a month=

2 months

Answer:

-7•5+3k+3•5+4k

-7•5+3•5+4k+3k

-4+7k

Answer:

3d + 1

I'm pretty sure it's the same thing.

Answer:

yes

Step-by-step explanation:

Answer:

1/8

Step-by-step explanation:

[tex] \bigg( \frac{1}{2} \bigg)^{4} = \\ \\ = \frac{1}{8} [/tex]

Answer:

I love algebra anyways

The ans is in the picture with the  steps how i got it

(hope this helps can i plz have brainlist :D hehe)

Step-by-step explanation:

Answer:

Step-by-step explanation:

I assume that they want the value of a when the solution exists.

2(ax+3y)+2x-6y=2(-5)+10

2ax+6y+2x-6y=-10+10

2ax+2x=0

ax+x=0

ax=-x

a=-1

You could then solve for x and y if you wanted x=5 and y=0

Unless a was a typo :)

Answer:

n=189

Step-by-step explanation:

[tex]n-63=126\\n=126+63\\n=189[/tex]

I hope this helps! :)

Brainliest? ✨

Answer:

C becausee I'm trying to help

Answer:

Yes!

Step-by-step explanation:

Answer:

12=9

Obviously

.................

X = 5

Isolate the variable by dividing each side by factors that don't contain the variable.

Answer:

X=5

4(x-2)=2(x+1)​

4x-8=2x+2

    +8     +8

4x=2x+10

-2x  -2x

2x=10

2x   2x

X=5

Answer:

1.28

2. -3.5

3.-10.5

Step-by-step explanation:

1.-0.0035 · 12000+70= 28

2. -0.0035 ·21000+70=-3.5

3. -0.0035 ·23000+70=-10.5

I hope this helps

Answer:

H: (2, 14)

O: (4,15)

U: (6,14)

S: (2,10)

E: (6,10)

Step-by-step explanation:

the image on the grid is after doin x- 1 and y-7

to get the preimage do the inverse , x + 1 , y + 7

note- a coordinate is written as (x,y)

so, add 1 to all the x's and 7 to all the y's on the coordinates on the grid!

and sorry for asking but, if this is right could i please get a thanks & brainliest recently a moderator deleted ALL my answers (over 400 answers) causing me to lose over 3k points so id appreciate it alot thanks xoxo

Answer:

volume equals length times width times height

Step-by-step explanation:

Answer:

the range would be 6.7 or if you want it to be rounded up, it would be 7.

Step-by-step explanation:

you subtract the highest number by the lowest number. 9.1-2.4= 6.7 or if you need it to be rounded, 7.

The range of the data set given is 6.7.

In statistics, the range of a set of data is the difference between the largest and smallest values, the result of subtracting the sample maximum and minimum. It is expressed in the same units as the data.

Given is a data set, we need to find the range of the data set,

S = 6.5, 7.6, 9.1, 2.4, 8.8​

The range = max value - min value

= 9.1 - 2.4 = 6.7

Hence, the range of the data set given is 6.7.

Learn more about range, click;

https://brainly.com/question/7038717

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Answer: 9b+6

Step-by-step explanation: