John is 5 years older than Randy. Oscar is twice as old as Randy. How old are each of the three boys is the sum of their ages is 85?​

Answers

Answer 1
Randy: 20 years old John: 25 years old and Oscar is 40 years old

Evidence: (5+x)(x)(2x) = 85
4x +5 = 85
4x = 80
x= 20 which is Randy’s age
20+ 5= 25 which is Johns age
20 • 2 = 40 which is Oscar’s age

Related Questions

I need help finding the solution​

Answers

✩ Answer:

 ✧・゚: *✧・゚:*✧・゚: *✧・゚:*✧・゚: *✧・゚:*

  [tex]\bold{Hello!}\\\bold{Your~answer~is~below!}[/tex]

Step-by-step explanation:

 ✧・゚: *✧・゚:*✧・゚: *✧・゚:*✧・゚: *✧・゚:*

✺ Subtract [tex]5[/tex] from both sides:

[tex]3z<17-5[/tex]

✺ Subtract [tex]5[/tex] from [tex]17[/tex] to get [tex]12[/tex]:

[tex]3z<12[/tex]

✺ Divide both sides by [tex]3[/tex]. Since [tex]3[/tex] is positive, the inequality direction remains the same:

[tex]z<\frac{12}{3}[/tex]

✺ Divide [tex]12[/tex] by [tex]3[/tex] to get [tex]4[/tex]:

[tex]\boxed{z<4}[/tex]

[tex]Hope~this~helps~and,\\Best~of~luck!\\\\~~~~~-TotallyNotTrillex[/tex]

             "ටᆼට"

PLEASE SOMEONE HELP ME ASAP!!! I’ll make you BRAINLIEST!!!!

Write y=2x^2+24x+47 in vertex form. Also please explain/write the steps thanks.

Answers

Answer:

y=(2x^2+24x)+25

y=2x(x^2+12x)+25

y=2x(x^2+12x+36)+25-2x(36)

Y=2x(x+6)^2+25-72

Y=2x(X+6)^2-47

Step-by-step explanation:

sorry it was late

Answer: y=2(x+6)²-5

Step-by-step explanation: First you find the coefficient of x^2, which is 2, then take out 2 as a factor, 24/2 which will equal to 12. After that do 47 divided by 2  if you calculate that it will equal to 23.5.  y=2(x²-12+23.5)  y =2(x²-12x+23.5)

Next Step: Figure out the coefficient of x. To make it easier,look what is in front of x as you can see it is 12. Then you divide 12/2 which is 6. Then square 6, which is 36. Then you add and subtract 36. To write the first three terms as a square, you do ( x+6)^2. Then do -36 + 23.5 if you calculate that it will get you wil get -12.5 . Now that you have calculated that distribute 2, then do 2 times -12.5 which is -12.5. This is how it shoud look like y=2(x+6)² -12.5.  

what is f(-2) if f(x)=x^2+3

Answers

Answer:

f(-2)=7

Step-by-step explanation:

substitute -2 in for x

[tex]f( - 2) = { - 2}^{2} + 3[/tex]

-2×-2=4

4+3=7

Answer:

f(-2)=7

Step-by-step explanation:

[tex]f(x)=x^2+3\\\\f(-2)=?[/tex]

Substitute ; -2 for x in the given function

[tex]f(-2)= (-2)^2+3\\\\\mathrm{Calculate\:exponents}\:\left(-2\right)^2\::\quad 4\\\\f(-2)=4+3\\\\f(-2)=7[/tex]

if 1 cm represents 35 miles what is 1.25 cm in miles?

Answers

Answer:

43.75 miles

Step-by-step explanation:

You divide the 35 by 4 and then just add it to the original distance of 35 miles. 35/4=8.75

8.75+35=43.75

Solve x2 − 8x + 15 < 0. The solution set for the quadratic inequality is:

Answers

Answer:

3<x<5

Step-by-step explanation:

[tex]x^2 - 8x + 15 < 0\\\\\mathrm{Factor}\:x^2-8x+15:\quad \left(x-3\right)\left(x-5\right)\\\left(x-3\right)\left(x-5\right)<0\\\\\mathrm{Find\:the\:signs\:of\:the\:factors\:of\:}\left(x-3\right)\left(x-5\right)\\\\\mathrm{Identify\:the\:intervals\:that\:satisfy\:the\:required\:condition:}\:<\:0\\\\3<x<5[/tex]

Please help for 50 points

Answers

Answer:

sometimes

never

always

sometimes

Step-by-step explanation:

Answer:

sometimes

never

always

sometimes

Step-by-step explanation:i did this...i got it correct

Pls help with question 7

Answers

Answer:

please check the image for the answer

-4(–7m – 10m – 4) – 2m

Answers

Answer:

Im assuming you need to simplfy as far as you can so

Step-by-step explanation:

-4 ( -17m -4 ) - 2m

distribute

68 m + 16 -2m

combine like terms

66m + 16

Answer: 66m + 16

Step-by-step explanation:

The scatterplot below shows the average yearly consumption of bottled water by people in the United States starting in 1990. Using the trend line, predict the average consumption of bottled water in the year 2000.​

Answers

where is the question chart/graph?

1)For every 90 minutes of sleep, a person has one dream stage. Rachael went to bed at 10:00 P.M. and woke up at 5:30 A.M. . How man dream stages did she likely have ? REMEMBER: 1 hour= 60 minutes. *
9 points
A) 5
B) 6
C)9
D)10
2) Ms. Lopez has $118 for tickets at the Sports Fun Park. She needs to buy 1 adult ticket for $19. How many child tickets can she buy if child tickets cost $12 each?
10 points
A) 5 child tickets
B) 6 child tickets
C) 7 child tickets
D) 8 child tickets Giving 35 points dont answer just for points

Answers

Answer:

1) a. 5

2) d. 8 child tickets

Step-by-step explanation:

1) added 90 minutes until 530

2) 118-19=99 99÷12=8.25

A basketball player attempted 15 field goals. He scored on 40 percent of his attempts. How many field goals did the player score? NEED HELP BADLY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! 10/21/2020

Answers

Answer:

He scored 6 field goals out of 15

Step-by-step explanation:

40% converted into a decimal is 0.4. "Of" means multiply. So you do 15 times 0.4 and get 6.

Analyze the number line below and answer the question that follows.



If jpg, where could point I be?

A.
–7
B.
–6
C.
–5
D.
–4



Please select the best answer from the choices provided


A
B
C
D

Answers

Answer:

c

Step-by-step explanation:

Alex rents a car for one day. The charge is $18
plus $0.12 per mile. Alex wants to spend exactly
$30. How many miles can he drive?

Answers

Answer:

100

Step-by-step explanation:

30 - 18 = 12

12 / .12 = 100

plz mark brainliest if helpful

Miles that alex can drive is 100

What is the unitary method?

The unitary method is a method for solving a problem by the first value of a single unit and then finding the value by multiplying the single value. Unitary method is a technique by which we find the value of a single unit from the value of multiple devices and the value of more than one unit from the value of a single unit. It is a method that we use for most of the calculations in math.

The calculation is as follows;

Number of days alex rents a car = 1 day

The charge for the car = $18 plus $0.12 per mile

Alex wants to spend; $30

The number of miles he will drive can be calculated as follows

= $30 - $18

= $12

= 12÷0.12

= 100

Therefore, if Alex spends $30 he will drive for 100 miles

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I am thinking of a slope equivalent to 1/4→ What are two points from the line? List your coordinate pairs below.
→ Prove that the slope equals 1/4.

Answers

[tex]\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}[/tex]

Actually Welcome to the Concept of the Mathematics

the points or conditions for the slope to be 1/4 are as

1.) (-2,2) ,(2.3)

2.) (-4,4),(4,6)

Which of the following expressions cannot be simplified?

A) √24
B) √32
C) √27
D) √38

Answers

Answer:

C

Step-by-step explanation:

Answer:

The answer is c

Step-by-step explanation:

Given the points (2,4),(-2,6),(1,3), and (0,3), categorize the domain and range.
Domain
Range
No Answers Chosen
ING
1
Possible answers:
2
3
All real numbers
-2
0
4
6
2
3
4

Answers

Answer: range: 3, domain: 4

Step-by-step explanation:

the range of a problem is basically the difference between the smallest and the largest y value. the largest y value here is 6 and the smallest is 3, so 6-3 = 3 -> 3 is your range! now for domain: the domain of a problem is the difference between the smallest and largest x value. the largest x value is 2 and the smallest is -2, so 2 - -2 = 4 -> the domain is 4! hope this helped!

7 + 9 – (–3) – 1 + 2

Answers

Answer: 20

Step-by-step explanation:

Hope helps

Answer:

7 + 9 - (-3) - 1 + 2

16 - (-3) - 3

19 - 3

16

10. A student solves the following problem:
Problem:
2 (x-3) + 3x = 19
2x - 6 + 3x = 19
(2x + 3x) - 6 = 19
5x - 6 - 19
Step 1
Step 2
Step 3
Step 4
Step 5
Step 6
5x - 6+ 6 = 19+ 6
5x = 25
X = 5
What property justifies step 4?
a. Commutative Property of Addition
c. Multiplication Property of Equality
b. Addition Property of Equality
d. Substitution

Answers

Answer:

Step-by-step explanation:

A.

Option A is correct. The property that justifies step 4 based on the calculation is the Commutative property of addition.

Equations are expressions separated by an equal sign.

Given the equation:

2(x-3) + 3x = 19

Expand the parenthesis using the distributive law

2x - 2(3) + 3x = 19

2x - 6 + 3x = 19

Collect the like terms

2x + 3x -6 = 19

Step 4

Since 2x+3x = 3x+2x = 5x (according to the commutative law), the expression becomes:

5x-6 = 19

Step 5

Add 6 to both sides

5x-6+6 = 19+6

5x = 25

x = 25/5

x = 5

Hence the property that justifies step 4 based on the calculation is the Commutative property of addition.

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A statistics teacher was interested in the relationship between you and the number of days students waited to start a project
and the score that project received (out of 100 points). Information was collected on several students and was used to
obtain the regression equation = -3.64x + 96.5, where x represents the number of procrastination days and 9 is the
predicted grade. What is the predicted grade of a student who procrastinated for 2 days?
0 25.96
0 85.58
O 89.22
0 103.78

Answers

Answer:

C. 89.22

Step-by-step explanation:

hope it helps!

edge 2020

5(x −1) < 3x + 10 − 8x

Answers

Answer:

x < [tex]\frac{3}{2}[/tex]

Step-by-step explanation:

I hope this help

Answer:

Step-by-step explanation:

5x - 5 < -5x + 10

10x - 5 < 10

10x < 15

x < 15/10

x< 3/2

Find value if x in the figure below

Answers

Easy buddy...

[tex]5x - 15 = 3x + 7[/tex]

Subtract the sides of the equation plus 15

[tex]5x = 3x + 7 + 15[/tex]

[tex]5x = 3x + 22[/tex]

Subtract the sides of the equation minus 3x

[tex]5x - 3x = 22[/tex]

[tex]2x = 22[/tex]

Divided the sides of the equation by 2

[tex]x = \frac{22}{2} \\ [/tex]

[tex]x = 11[/tex]

________________________________

And we're done.

Thanks for watching buddy good luck.

♥️♥️♥️♥️♥️

What is the slope of the line through (-9,6) and (-6, -9)?
Choose 1 answer:
1/5
5
-5
-1/5
I hate algebra




Answers

The slope of (-9,6) and (-6,-9) is -5.

Assume you have 3,000 songs downloaded to your mobile phone. Of these songs, 50 songs are by your favorite artist. If you play the songs on random shuffle, how many songs would you have to listen in a row before you heard a song by your favorite artist?

Answers

Answer:

2950

Step-by-step explanation:

i just subtracted 3,000 with 50

There are 2950 songs would you have to listen in a row before you heard a song by your favorite artist.

What is random shuffle of songs?

Shuffle play is a type of music playback in which all tracks are selected at once and songs are played in a random order. Media player software, digital audio players, and CD players all frequently have it.

Given: You have 3,000 songs downloaded to your mobile phone.

Of these songs, 50 songs are by your favorite artist.

So, the number of songs would you have to listen in a row before you heard a song by your favorite artist are,

3000 - 50 = 2950.

Therefore, there are 2950 songs would you have to listen in a row before you heard a song by your favorite artist.

To know more about the random shuffle of songs, click on the link

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Which equation represents a proportional relationship

Answers

Answer: B y=100/x

Step-by-step explanation:

It’s b since 100/yx and its proportional

Help needed ASAP will give you BRAINLIEST and 5 stars rate :)

Answers

The rate of the byciclist is 20km/h. We know this because each line of the km side represents 20 and on the x axis each line is 1

Answer:

The bicyclist is travelling at a rate of 20 km/h.

Step-by-step explanation:

When you plug the numbers into the formula (y2-y1/x2-x1=m) you get 20 km/h.

Choose a justification for each step in the derivation of the sine difference identity.

Answers

Answer:

Step-by-step explanation:

The missing reasons are Cofunction identity, Cosine difference identity, Cofunction identity, Cosine function is even and sine function is odd respectively.

Given:

The given expression is [tex]\sin (x-y)[/tex].

To find:

The justification for each step.

Explanation:

Cofunction identities:

[tex]\sin\left(\dfrac{\pi}{2}-x\right)=\cos x[/tex]

[tex]\cos\left(\dfrac{\pi}{2}-x\right)=\sin x[/tex]

Cosine difference identity:

[tex]\cos(x-y)=\cos x\cos y+\sin x\sin y[/tex]

Cosine function is even, so [tex]\cos(-x)=\cos x[/tex].

Sine function is odd, so [tex]\sin(-x)=-\sin x[/tex].

We have,

[tex]\sin (x-y)[/tex]

[tex]=\cos\left|\dfrac{\pi}{2}-(x-y)\right|[/tex]                                             Step 1: Cofunction identity

[tex]=\cos\left|\dfrac{\pi}{2}-x+y\right|[/tex]                                                 Step 2: Distributive property

[tex]=\cos\left|\left(\dfrac{\pi}{2}-x\right)+y\right|[/tex]                                            Step 3: Associative property

[tex]=\cos\left|\left(\dfrac{\pi}{2}-x\right)-(-y)\right|[/tex]                                        Step 4: Factoring out   

[tex]=\cos\left(\dfrac{\pi}{2}-x\right)\cos(-y)+\sin\left(\dfrac{\pi}{2}-x\right)\sin(-y)[/tex]       Step 5: Cosine difference identity

[tex]=\sin(x)\cos(-y)+\cos(x)\sin(-y)[/tex]                           Step 6: Cofunction identity

[tex]=\sin(x)\cos(y)-\cos(x)\sin(y)[/tex]                                Step 7: Cosine function is even, sine function is odd

Therefore, the missing reasons are Cofunction identity, Cosine difference identity, Cofunction identity, Cosine function is even, sine function is odd respectively.

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Tammy purchased a prepaid phone card for $15. Long distance calls cost 18 cents a minute using this card. Tammy used her card only once to make a long
distance call. If the remaining credit on her card is $6.72, how many minutes did her call last?

Answers

Answer:

46 minutes

Step-by-step explanation:

Sorry about not answering your question sooner, but here is your answer:

In order to get the answer, we have to subtract the original amount of money on the phone card by the amount left ver after the call:

15 - 6.72 = 8.28

Then, we divide this number by 0.18:

8.28 / 0.18 = 46

So, Tammy's call lasted 46 minutes

Hope this helps :)

At the market five lightbulbs cost nine dollars how much do seven lightbulbs cost

Answers

Answer:

$12.60

Step-by-step explanation:

Answer:

12.60

Step-by-step explanation:

9 dollars divided by 5 lightbulbs is 1.8

so 1.80 dollars × 7 lightbulbs = 12.60

9÷5=1.8

1.8×12.60

6x +3 = 6x -20 - x equations with variables

Answers

6x+3=6x-20-x
6x+3=5x-20
6x+23=5x
23= -x
x= -23

the final answer is -23

Lisa has t toy cars. Gordon has 19 times as many toy cars as Lisa. Choose the expression that shows how many toy cars Gordon has.

Answers

Answer:

19 times t = how many toy cars Gordon has.

                             OR

19t= how many toy cars Gordon has

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