Mathematics High School

Please helpp middle school math

suppose 4<a<7. find all the possible values of 15-2a​

Answers

Answer 1

9514 1404 393

Answer:

  1 < 15 -2a < 7

Step-by-step explanation:

There are a couple of ways you can do this.

1) Put the minimum and maximum values of a into the expression to see what its corresponding values are:

  15-2a for a=4:

     15-2(4) = 7

  15-2a for a=7:

     15-2(7) = 1

Then ...

  1 < 15-2a < 7

__

2) Solve for a in terms of the value of 15-2a, then impose the limits on a.

  x = 15 -2a

  2a = 15 -x

  a = (15 -x)/2

Now, impose the given limits:

  4 < (15 -x)/2 < 7

  8 < 15 -x < 14 . . . multiply by 2

  -7 < -x < -1 . . . . . . subtract 15

  7 > x > 1 . . . . . . . . multiply by -1

  1 < 15-2a < 7 . . . . . use x=15-2a

_____

The vertical extent of the attached graph is the range of possible values of 15-2a. It goes from 1 to 7.

Please Helpp Middle School Mathsuppose 4&lt;a&lt;7. Find All The Possible Values Of 15-2a

Related Questions

Use inverse operations to solve: x + 3.2 = 7

Answers

Answer:

x=3.8

Step-by-step explanation:

You would use the inverse operation by subtracting 3.2 from both sides of the equation, leaving you with x=3.8

1. Find the perfect square numbers between the following:
a. 26 and 55

Answers

Answer:

36 &49

Step-by-step explanation:

6²=36

7²=49

Answer:

36 ,49

Step-by-step explanation:

36 = 6 * 6 = 6²

49 = 7 * 7 = 7²

Please help me with this question

Answers

Answer:

Step-by-step explanation:

(a). SR = 15√2 km ≈ 21.2 km

R is 21.2 km due South-East of S

(b). RQ² = 35² + 15² ⇒ RQ = 5√14 km ≈ 38.1 km

R is 38.1 km due South-West of Q

Please help me, but the answer choices are
A) 4/3 (11) pi
B) V=2/3 (11) pi
C) V=4/3 (11)
D) V=2/3 (11)

Answers

Answer:

B

Step-by-step explanation:

answer is B

and what is ypur grades

Enter the equation of the line in slope-intercept form.

The line parallel to y =
5/4x + 8 that passes through (−8, 0).

The equation of the line that passes through (−8, 0) is y = ???

Answers

Answer:

5/4x+10

Step-by-step explanation:

evaluate 68 x 71 mentally.

Answers

Answer:

4828 = 68 x 71

Step-by-step explanation:

how I looking at it all I did was multiply

Answer:

4828

Step-by-step explanation:

68x71=4828

The sum of two numbers is 100, The difference between the two numbers is 95
workout the two numbers

Answers

Answer:

Let the numbers be x and y

x+y=100

x-y=95

taking x-y=95

x=95+y

x+y=100

95 + y +y = 100

2y=100-95

y=5/2

y=2.5

x=95+y

x=95+2.5

x= 97.5

Hope it helps...............

The two numbers are 97.5 and 2.5.

What is Addition and Subtraction?

Subtraction is the process of taking out certain value from a given amount of number.

The process of subtraction can also be termed as finding difference.

Addition is one of the basic mathematical operations where two or more numbers is added to get a bigger number.

The process of doing addition is also called as finding the sum.

Let x and y be the two numbers.

The sum is 100 and the difference is 95.

x + y = 100 ⇒ x = 100 - y

x - y = 95

Substituting x = 100 - y in the second equation,

100 - y - y = 95

100 - 2y = 95

2y = 100 - 95

2y = 5

y = 5/2 = 2.5

x = 100 - y = 100 - 2.5 = 97.5

Hence the numbers are 97.5 and 2.5.

Learn more about Addition and Subtraction here :

https://brainly.com/question/29464370

#SPJ2

pls help me in this​

Answers

[tex]A=\frac{3\sqrt{3}}{2}(8)^2=\boxed{96\sqrt{3} \text{ cm}^2}[/tex]

Which inequality does this graph represent?
O-1 0-1 < x
Ox=-1
Oxs-1

Answers

Answer:

B

Step-by-step explanation:

Got it right on the quiz:)

What is 74.3 in expanded form

Answers

Answer:

70 + 4 + .3

Step-by-step explanation:

Effortless!

70 + 4 + .30 hope this helped!

Please help 100 points!!! :)
Who ever answers right first get's brainliest!!! :)

Answers

Answer:

1/7

Step-by-step explanation:

Wich of the following lines is parellel to x=8

Answers

Answer: X=0
I’m not sure

HELP I DONT UNDERSTAND. I WILL GIVE BRAINLIEST (foolish answers will be reported)

Answers

Answer:

A

Step-by-step explanation:

A submarine is at a depth of 100 feet below sea level. Then it starts to dive at a rate of 50 feet per minute. What is the slope?​ I will give brainliest and help you ☻

Answers

Answer:

Independent variable: Time in minutes

Dependent variable: The elevation in feet

Slope: -50

Y-Intercept: -100

Step-by-step explanation:

Just did the assignment

Plsss help mee :,) ill give brainlist

Answers

Answer:

3/5, 1, 8/5, 8

Step-by-step explanation:

Answer:

0, 35, 8/5, 8.  I think

Step-by-step explanation:

hope this helps :3

im sorry if im wrong

HELP ASAPPP!!! !!!! PLEASE

Answers

Answer:

B.

Step-by-step explanation:

for decimals, you start with tenths, so it would be thousandths

The answer is A. Because it is in the thousands

What does m represent in the equation y= mx + b?
none of these
the slope of the graph of
y = mx + b
the y-intercept of the
graph of y = mx + b
the run in the ratio
rise
run

Answers

[tex]y=mx+b[/tex]

where m is slope

and b is y-intercept

m represents the slope of the graph in y = mx + b

The table below lists the scores for a game of cards in which the highest score wins. Players A, B, C, and D recorded their scores for each round, but they did not total the scores until the end of the game.
Rounds: 1 2 3 4 5 6 7 8
A 130 64 0 -14 -78 158 -68 50
B 72 97 13 -7 120 57 80 -37
C -26 45 109 -9 67 -56 105 0
D -47 54 126 0 -65 95 144 -6

If the game ends after 5 rounds, which answer choice correctly lists the order of the players from lowest score to highest score?
F. A, B, C, D
G. D, A, C, B
H. D, C, B, A
J. D, B, A, C

Answers

Answer:

D, A, C, B.

Step-by-step explanation:

The scores at the end of the 5th round are 102, 295, 186, and 68.

What is the equation of a line, in general form, that passes through the point (1, -2) and has a slope of 1/3.

Answers

Y=1/3x+c as 1/3 is the gradient/slope
Plug in the coordinates into the equation
-2= 1/3*(1) +c
C=-2-1/3
C=-7/3
Y= 1/3x-7/3

Answer:

weed

Step-by-step explanation:

cause yes, cause I said so :)

Mr. Gomez needs to rent a moving truck. Company "A" charges $75 plus a $50 a day and Company "B" charges $105 plus $35 a day. Write an equation that can tell after how many days would the price be the same.

Answers

Answer: 75+50x= 105+35x , required equation.

Step-by-step explanation:

Let x = Number of days

Given:  Company "A" charges $75 plus a $50 a day.

Total charge = 75+50x

Company "B" charges $105 plus $35 a day.

Total charge = 105+35x

When both are same , equation becomes

75+50x= 105+35x

So, Required equation: 75+50x= 105+35x


PLZZZZ HELPPPP THIS IS A TIMED TESTTT!!

DEFG has been dilated to D’E’F’G’. Use a pair of corresponding sides to determine the scale factor.

Answers

Answer:

2/3

Step-by-step explanation:

DEFG ~ D'E'F'G'

[tex]\frac{D'G'}{DG}[/tex] = [tex]\frac{2}{3}[/tex]

6x + 21y = 103
-6x + 23y = 51

Answers

Hope that helps you :))

30 points!!
Find the missing term to make each statement true
1. 18e + __ = 12e
2. __ - (-21x) = 21x
3. 90z + __ = 80z

Answers

Answer:

1. 18e + (-6e) = 12e

2. 0x - (-21x) = 21x

3. 90z + (-10z) = 80z

1. 18e + (-6e) = 12e

2. 0x - (-21x) = 21x

3. 90z + (-10z) = 80z

Find the area of the circle.

Answers

Answer:

Pie*radius*2 you did not give me the radius

Step-by-step explanation:

What are the angle names given in the picture?

Plzzzz anyone answer I post question but no one answers them but plz anyone answer this time it’s a project and it’s due date is today plz helppp

Answers

Answer:

tbh there are quite a lot of possibilities

I'll just name the properties but not show which angle applies to it cos that's too time consuming

Step-by-step explanation:

vertically opposite angles

interior / exterior alternate angles

corresponding angles

angles on a straight line are supplementary

16) tan Ø
7C
6
Y
3
A)
B) -2
3
C)
داد
D)1
2

Answers

Answer:

:O

Step-by-step explanation:

20 points math test ​

Answers

Answer:

A

Step-by-step explanation:

A negative times a positive is a negative

A prime number is an integer greater than 1 with exactly two different positive factors, 1 and the number itself. There are three children in a family. Each of their ages is a prime number. The sum of their ages is 41 and at least two of the children have ages that differ by 16. Determine all possibilities for the ages of the children.

Answers

Answer:

Hence,

a=19,b=19,c=3

a=11,b=7,c=23

Step-by-step explanation:

[tex]Let\ their\ ages\ be\ a,b\ and\ c\ respectively, where\ a,b,c\ are\ primes\\Hence,\\a+b+c=41\\b-c=16\\Listing\ out\ all\ the\ primes\ from\ 0\ to\ 41\ we\ get:\\2,3,5,7,11,13,17,19,23,29,31,37,\\Hence,\\Lets\ seperate\ out\ the\ primes\ who\ differ\ by\ 16 :\\3\ and\ 19, 7\ and\ 23\ ,[/tex]

Hence,

[tex]Lets\ consider\ this\ set\ as\ b,c:\\Hence,\\To\ find\ a \\a=41-(b+c)\\Hence, By\ doing\ this\ indiviually\ we\ get:\\[/tex]

[tex]a=41-(19+3)\\a=41-22\\a=19\\Hence, a=19,b=19,c=3[/tex]

[tex]a=41-(23+7)\\a=41-30\\a=11\\Hence, a=11,b=7,c=23[/tex]

This​ week, 957 people went to the beach. Last​ week, 1,207 people went to the beach. The number of people who went to the beach fell by what​ percent? Use pencil and paper. Explain how you know whether the answer is greater than or less than​ 25%

Answers

Answer:

Less than 25%

Step-by-step explanation:

1. Find the difference of the two numbers: 1,207 - 957 = 250

decrease = original number - new number

2. Then, divide the decrease by the original number

250/1,207 = 0.207

3. Multiply the answer by 100 to get the percentage

0.207 x 100 = 20.7%

Therefore, the number of people fell by 20.7%

Hence, the answer is less than 25%

Step-by-step explanation:

Why would the law of cosines be used to solve for b in the triangle below? SAS is given, and the unknown measure, b, is a side length. SSA is given, and the unknown measure, b, is a side length O 36° O 3.5 7 SSS is given, and the unknown measure, b, is an angle measure. ASA is given, and the unknown measure, b, is an angle measure. DONE b​

Answers

Answer:

it's a

Step-by-step explanation:

its a on edge

Answer: A

Step-by-step explanation:

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