Mathematics College

if m 1 =7x and m 4 =3x +20 what is the value of x​

Answers

Answer 1

Answer:

this is a wild guess but  10.

Step-by-step explanation:

Not sure if you're allowed to do this but i added the x's

7x+3x= 10x

   10x+20.

I then subtracted 10 by both sides. That leaves me with 10.

  x =10

 this is a guess i apologize if it's wrong

Related Questions

Broccoli cost 1.50 at a store. How much does 32 ounces of broccoli cost?

Answers

Answer:

48.00

Step-by-step explanation:

Answer:

48.0 hope it helps you out

PLS HELP! (THE QUESTION IS A PICTURE CLICK ON THE QUESTION FIRST)

Answers

Answer:

Step-by-step explanation:

B.28.1

Answer:

It's BBBBBBBBBBBBBBBBB

FREE BRAINLIST NEED HELP ASAP

Answers

Answer:

A)4.6 yard

Step-by-step explanation:

[tex]x^{2} +10^{2} =11^{2} \\x^{2} =21\\x=\sqrt[2]{21} \\[/tex]

x≅4.6

Hoped I helped, have a nice day!

I WILL GIVE BRAINIEST AND 100 POINTS TO WHOEVER ANSWERS THIS ASAP
Find the value of x in the triangle.

Answers

the answer to your question is 104 degrees.

10. A vehicle averages 68 km/h. How many kilometres can the car travel in 3 hours?​

Answers

Answer:

15 I believe. ...

Step-by-step explanation:

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what number is 30% greater than 20?

Answers

Answer:

26 is 30% greater than 20!hope this helped have a good day/night

Solve the equation for y. 6x+y=12

Answers

6x+y=12
Subtract 6x from both sides.
y=-6x+12

is travelling to another country.
He flies for 7 hours at an average speed of 990 km/h on one plane.
He then flies for 6 hours 15 minutes at an average speed of 920 km/h on a second plane.
What is the total distance, in km, he travelled by plane?

Answers

Answer:

First time=7hours

First speed=990km/hour

First distance=first time×first speedD=(

S×T)

D=990km/hr×7hrs

D=6930km.

Second time=6&14min.

Second speed=920km/hr

Second distance=second speed×second time (D=s×t)

D=920km/hr×6&14min.

D=1500

Total distance=6930+1500

=8430

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Answers

Answer:

1200

Step-by-step explanation:

Help please!!!When the clock struck midnight, Cinderella ran 3 miles back to her house from the ball. How many yards did she run?

Answers

Answer:

she ran 5,280 yards

Step-by-step explanation:

Answer:

5280

Step-by-step explanation:

Well, there are 1760 yards in a mile, aka 5280 feet. (5280ft/3=1760yds). 1760x3=5280.  I hope this was an okay explanation, this is my first day on Brainly with an account, hehe.

Noise levels at 5 airports were measured in decibels yielding the following data:
117,118,140,116,119
1. Construct the 90% confidence interval for the mean noise level at such locations. Assume the population is approximately normal.
2. Calculate the sample mean for the given sample data.
3. Find the critical value that should be used in constructing the confidence interval.

Answers

Answer:

1. 112.364<μ,131.636

2. mean = 122

3. critical value = +-2.1318

Step-by-step explanation:

117+118+140+116+119/5

= 610/5

= 122

the sample mean = 122

the sample standard deviation

s² = (117-122)²+(118-122)²+(140-122)²+(116-122²)+(119-122)²/5-1

= 25+16+324+36+9/4

= 410/4

= 102.5

s² = 102.5

s = √102.5

s= 10.12

SE = s/√n

= 10.12/√5

= 4.52

degree of freedom = 5-1 = 4

critical value of t = +-2.1318 using soft ware

confidence interval =

mean +- t(SE)

122-(2.1318)(4.52), 122+(2.1318)(4.52)

= [112.364, 131.636]

112.364<μ,131.636

therefore these are the answers in the ordre it was given in the question

1. 112.364<μ,131.636

2. mean = 122

3. critical value = +-2.1318

Please help now ASAP!!!!

Answers

Answer:

Step-by-step explanation:

I don't think u can tell from that because u need the length of each movie

Find the linear equation that is the straight line through (1, 2) and (8, 30).​

Answers

Slope
= 30-2/8-1

= 28/7

= 4


Equation:
y - 2/x - 1 = 4

y - 2 = 4(x-1)

y - 2 = 4x - 4

y = 4x - 4 + 2

y = 4x - 2

Answer:

y = 4x - 2

Step-by-step explanation:

→ First find the gradient

[tex]\frac{x2-x1}{y2-y1} =\frac{30-2}{8-1} = 4[/tex]

→ Put into y = mx + c format

y = 4x + c

→ Substitute ( 1 , 2 ) into y = 4x + c

2 = 4 + c so c = -2

→ Rewrite into equation format

y = 4x - 2

the sum of the first n terms of a sequence is given by Sn=3^m^+^1-6 Determine the sum of the first 12 terms​

Answers

Hi I just need to answer this so I can get point so yea but it’s probably 3-56 38

Calculate the volume of the given pyramid to the nearest tenth

Answers

Answer:(A.)

Step-by-step explanation:The reason why its a its because that 13x8=104x17=1,768/3=589.3. Therefore 589.3 can not be round to the nearest tenth.

WILL GIVE BRAINLIEST

Answers

Answer:

B. 12

Step-by-step explanation:

First, we need the degrees for A. So, cosx = 5/13    =    67.4

Now it will be easy to solve a. tan67.4° = a/5    =   12.011728511....

we round it to the nearest tenth and we get 12.

Step-by-step explanation:

By pythagoras theoram

[tex]c = \sqrt{a2 + b2} [/tex]

13=a²+5²a²=13²--5²a²=169--25a²=144

I think this is a helpful for you

factor g(x) =6x^3 +13x^2 -2x -1 if (2x + 3) is a factor.​

Answers

Here’s what I got hope it helps

Find the area of the polygon.
16 ft
14 ft
2 ft
2 ft

Answers

Answer:

448ft

Step-by-step explanation:

16 x 14 x 2 x 2

  \   /         \   /

  224   x    4

          \    /

          448

Krysta opened a bank account. She received 8% interest every year she has money in the account.

A. Write two expressions to represent this situation after one year. Let mrepresent the amount of money she puts in the account.

Expression #1: Expression #2:

Explain how these two expressions are equivalent

How much money will she have in her account after one year if she originally put $50 in the account?

Answers

Answer:.

Step-by-step explanation:

Here's link to the answer:

tinyurl.com/wpazsebu

What is the volume of of a rectangular prism with the following measurements:

Length: 3 yd
Width: 1/2 yd
Length: 1/2 yd

A 3/4 yd cubed
B 2/3 yd. cubed
C 6/2 yd. cubed
D 6/8 yd. cubed

I will give brainleast

Answers

Answer:

b

Step-by-step explanation:

I need serious help with this equation.​

Answers

Answer:

First, it’s already telling you that you need to find d, which is the opposite of degree 59. This means you have to do the exact thing for degree 37. Since it’s already telling you to use sine, you need to look at the opposite side of 37 which is 98.4.

So ? is 98.4

Now, you need to find sin 59 / d.

First, plug in sin 98.4 sin (37) in your calculator (make sure it’s in degree setting)

The result is 59.2.

Now, 59.2 = sin 59 / d.

Switch sides like this: d = 59.2 sin (37)

And the answer is approximatley d = 35.6

? = 98.4

d = 35.6

given the equation y = 2x - 8 what is the slope and the y-intercept​

Answers

Answer:

slope: 2

y intercept 0, -8

Slope is 2 and y-intercept is -8. This is because of the equation y=mx+b. M is slope and b is y intercept

there are 16 sixth graders, 11 seventh graders, and 9 eighth graders in a gym class. the gym teacher randomly selects one student to collect balls how many ways can choosing not a seventh grader occur

Answers

Answer:

34 total students.

25 are not 7th graders

27/35

Photography. In exercises 18 and 19, use the following information. Developing times of photographic prints are normally distributed with a mean of 15.4 seconds and a standard deviation of 0.48 seconds.​

Answers

Answer:

18.The answer is 47 . 5 %

19.The answer is 83 . 85 %

Step-by-step explanation:

18 . This is a good example of normal Distribution

Z = ( Given score - Mean ) / Standard deviation

Z = (16. 36 - 15 .4 ) / 0.48

Z= 0. 96 / 0.48

Z = 2

From the table, the value of z on the right side of the normal curve

= 0.34 + 0 . 135 = 0.475

The percentage is 0. 475 x 100 = 47 . 5 %

19. We are asked to get the percentage between 13. 96 and 15. 88

Z 1 = ( 13 .96 - 15. 4 ) / 0.48

Z 1 = - 1. 44 / 0.48

Z 1 = -3

Z 2 = ( 15 . 88 - 15 . 4 ) / 0. 48

= 0. 48 / 0.48

Z 2 = 1

From the table , the value of z from - 3 to 1 is 0. 34 + 0. 135 + 0. 0235 + 0.34

= 0 .8385

The percentage is 0 . 8385 x 100 = 83 . 85 %

answer the questions, please I will give you 10 points

Answers

A) 3 times 7x makes it a normal number of 21.
B) using PEMDAS you must multiply 5 times 5 to put 5 to its own power, then multiply by 2 to get 50, then add 4 getting 54.
C) 9 times 5y gets the normal number of 45, then subtract that from 80, you get 35.

Solve.
a - 6 > 1
I need help quick!​

Answers

Answer: 8

Step-by-step explanation:

8-6 = 2 which is greater

anything above 7 is correct

Answer:

a>7

Step-by-step explanation:

a-6>1

a>1 +6

a>7

thank u i hope it helps

33√8

9√20

444÷333

5552×333


3÷99


44√5

6622÷33








​

Answers

Step-by-step explanation:

93.340.21.318488163398.3200.6

if u want it by step by step thn tell me i will do that..

Help me help me help me pls pls pls

Answers

Answer:

x = 121

Step-by-step explanation:

all angles sum = 540

87 + 92 + 105 + 135 = 419

540 - 419 = 121

Calculate the SQRT485 Express answer to nearest hundredth.

Answers

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Answer: 22.02

Explanation:

I hope this helped!

<!> Brainliest is appreciated! <!>

- Zack Slocum

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

7. A garden contains 284 flowers, each of which is either red or yellow. There
are 5 beds of yellow flowers and 4 beds of red flowers. There are 40 yellow
flowers in each yellow flower bed. If r represents the number of red flowers in
each red flower bed, what equation could you use to represent the number of
red and yellow flowers?

Answers

Answer:

284=5(40)+4r

Step-by-step explanation:

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