Robert has x books. Marie has twice as many books as Robert has. Together they have 18 books. Which of the following equations can be used to find the number of books that Robert has?Choose one multiple choice answer
x+x+2=18
x+2x=18
2x=18

Answers

Answer 1

Answer:

2x=18

Step-by-step explanation:

2 times 9 equals 18 and if they both have 18 together the only anwser would be 2x=18 x=9 Another way I could put it to make it more simple is 2X9=18 or 29=18


Related Questions

If x = 2, y = 3 and z = 5, calculate the following: 5x - z

Answers

5*2 - 5
5*2=10
10-5=5

May someone please help me with this?

Answers

i’m pretty positive it’s 90 degrees. hope this helps!

Can anyone help me with this geometry test please I will give brainlist!!



Also NO links!!

Answers

mexico simpre gana vamooos mexico alv todos los estadunidence s

Which of these is a simplified form of the equation 15x + 4 = 5 + 3x + 1x? (2 points)
0 3x = 9
0 3x = 11
O 11x = 9
0 11x = 1

Answers

Answer:

11x=1

Step-by-step explanation:

15x+4=5+3x+1x       Bring everything with an x in front of it to the left side

15x-3x-1x+4=5         Simplify the x values

11x+4=5                    Bring the 4 to the right side

11x=5-4

11x=1

Hello, I need help with radical expressions. I've tried looking it up, but I'm getting no solutions. 11^3sqrt(x-12)=66

Answers

Answer:

Here we want to solve the equation:

[tex]11^3\sqrt{x-12} = 66[/tex]

First, we can divide both sides by 11^3 to get:

[tex](11^3\sqrt{x-12})/11^3 = 66/11^3[/tex]

[tex]\sqrt{x - 2} = 66/11^3[/tex]

Now remember that:

(√x)^2 = √(x^2) = x

then if we apply this to our equation we get:

[tex](\sqrt{x - 2})^2 = (66/11^3)^2[/tex]

now we need to solve:

[tex]x - 2 = (66/11^3)^2\\x = (66/11^3)^2 + 2 = 2.002[/tex]

Then x = 2.002

Can u solve this please? Pythagorean theorem

Answers

Answer:

12.8 ft or exactly sqrt 164

Step-by-step explanation:

Pythagoreans is a^2+b^2=c^2

10^2+8^2=164

sqrt 164 = 12.8 ft

i don’t understand how to solve this

Answers

dont click the link above.

Who walked the shortest distance on the trail?

Answers

Answer:

charles

Step-by-step explanation:

7. James earned $13 on Monday and doubled his pay each day thereafter for a week. How
much did he earn on Saturday?

Answers

Answer:

416$

Step-by-step explanation:

Please help me with this question

Answers

The answer is both suravi and tori hope this helps! :) ✨

can someone please help me is the answer -1​

Answers

Answer:

I Think It is -1

I dont really understand this but I think its -1


Trains Two trains. Train A and Train weigh a total of 387 tons. Train Ais heavier than Trains. The
difference of their weights is 189 tons. What is the weight of each train?
Train A weighs
tons

Answers

Answer: the other train shoud weigh 198 hope it helps

Step-by-step explanation:

Answer:

train A=198

train B=189

Which box plot matches the data set?

34, 36, 41, 45, 49, 50, 51, 52, 56, 59

For the state of said the first quartile is 41, The median is 49.5 and the third quartile is 52.

Please help I will give Brainless

Answers

Answer:

Step-by-step explanation:

34, 36, 41, 45, 49,          50, 51, 52, 56, 59

Yes, the median is 49.5, Q1 is 41, Q3 is 52 (I always have to check)

So the box should start at Q1, end at Q3, and have it's middle line on the median. For this data set, box should start on 41, end on 52, and have its inner line on 49.5.

Of your choices, that's option C.

Please let me know if you have questions.

PLS HELP! VERY IMPORTANT
The surface area of a cone is determined by the equation SA= a rs + a r2, where r is the radius and s is the slant
height. The functions f(x) and g(x) both model the surface area of a cone. One of the functions represents the
surface area of a cone with a radius of 5 and a slant height of x. The other function represents the surface area of a
cone with a slant height of 5 and a radius of x. Which statement correctly matches the description of the function
with the domain of the function in the context of the problem situation?
The function f(x) models the surface area of a cone with a radius of 5, a slant height of x, and has a domain in
the context situation of x < 5.
® The function f(x) models the surface area of a cone with a radius of 5, a slant height of x, and has a domain in
the context situation of x > 5.
© The function g(x) models the surface area of a cone with a radius of 5, a slant height of x, and has a domain in
the context situation of x < 5.
The function g(x) models the surface area of a cone with a radius of 5, a slant height of x, and has a domain in
the context situation of x>5.

Answers

Answer:

r = 5, h = 5, SH = 7.07106781, V = 130.899694, LSA = 111.072073, BSA = 78.5398163, TSA = 189.61189

Step-by-step explanation:

A grab-bag contains 30 packages worth $.65 each, 10 packages $.60 cents each, and 15 packages worth $.30 each. What is the expected value if you have to pay $.50 to pick one package at random?

Answers

Answer:

Expected value of package = $0.04 (Approx.)

Step-by-step explanation:

Given:

30 packages at $0.65 each

10 packages at $0.60 each

15 packages at 0.30 each

Pick up price for random one = $0.50

Find:

Expected value of package

Computation:

Total cost of 30 package = 30 x 0.65

Total cost of 30 package = $19.5

Total cost of 10 package = 10 x 0.60

Total cost of 10 package = $6

Total cost of 15 package = 15 x 0.30

Total cost of 15 package = $4.5

Total cost = 19.5 + 6 + 4.5

Total cost = $30

Cost of random package = 30 / [30+10+15]

Cost of random package = $0.54

Expected value of package = 0.54 - 0.50

Expected value of package = $0.04 (Approx.)

Which cube is a unit cube?

a cube that is 9 inches long, 9 inches wide, and 9 inches high
a cube that is 3 meters long, 3 meters wide, and 3 meters high
a cube that is 1 yard long, 1 yard wide, and 1 yard high
a cube that is 11 centimeters long, 11 centimeters tall, and 11 centimeters high

Answers

Answer:

Option 3

Step-by-step explanation:

A unit cube has side lengths of 1

Answer:

3 is the answer

Step-by-step explanation:

A unit cube has side length that is 1

brainiest goes to correct answer

Answers

Answer:

2960

Step-by-step explanation:

360 x 20 = 7200

212 x 20 = 4240

7200-4240 = 2960

This Question: 1 pt
20 of 20
This Qu
th
The pH of a fruit juice is 2.9. Find the hydronium ion concentration, [H30 * ), of the juice. Use the formula pH = -log[H30*]
The hydronium ion concentration [H30 + ] is approximately moles per liter.
(Use scientific notation. Use the multiplication symbol in the math palette as needed. Round to the nearest tenth as needed.)

Answers

Answer:

scientific" (and any subsequent words) was ignored because we limit queries to 32 words.

Your search - This Question: 1 pt 20 of 20 This Qu th The pH of a fruit juice is 2.9. Find the hydronium ion ... - did not match any documents.

Suggestions:

Make sure that all words are spelled correctly.

Try different keywords.

Try more general keywords.

Try fewer keywords.

The system of linear equations represented in the graph is ______
The solution of this system of equations is ____

Answers

Answer:

(- 3, - 5 )

Step-by-step explanation:

The solution to a system of equations given graphically is at the point of intersection of the 2 lines.

The lines intersect at (- 3, - 5 ) ← solution

Answer:

The system of linear equations represented in the graph is y=x-2, y=3x+4.

The solution of this system of equation is (-3,-5)

36x - 63 = k(4x - 7)

Answers

Answer:

K = 9

X = 7/4

Step-by-step explanation:

Solving for K:[tex] \frac{36x - 63}{4x - 7} = k[/tex]

[tex] \frac{9(4x - 7)}{4x - 7} = k[/tex]

[tex]9 = k[/tex]

when adding terms, the___?___in which they are added can change

Answers

Answer:

When adding terms, the order in which they are added can change

Step-by-step explanation:

The order doesn't matter.

Malcolm is filling bags with rice. He starts with a 5
1 over 4 pound container of rice and fills each
bag with pound of rice. How many bags of rice can Malcolm fill?

Answers

(I think that says 51...)

Basically all you do is multiply 51 by 4

 51

x  4

104

The answer (if those numbers are correct) is 104.

what is 48% of 60? This is for Algebra 1! :)

Answers

Answer:

48% of 60 is 28.8.

48% of 60 is 28.8
hope it helps

The cost for a ticket at the movie theater is $13. Students get a 9% discount taken off the price of a ticket. How much does the student ticket cost after the discount is taken off?


Explain your answer.

Report if wrong.

Answers

$11.83 b/c 13.00 x 0.09 = 1.17   13 - 1.17= 11.83

becca surveyed the students at her school to find out which cellphone company they use. Her results are listed on the table. What is the probability that a randomly chosen student is a junior who uses company B? ​

Answers

Answer:

would be awesome if u had attached a pic of the graph. we can't help u with this little information

NO LINKS PLEASE what is y? (please explain the steps too :))

y=3(19)-5 y=2(19)+14​

Answers

Answer:

solution given:

y=3(19)-5=57-5=52

y=2(19)+14=2×19+14=38+14=52

:.

y=52

Answer:

y = 52

Step-by-step explanation:

Order of operation says we must multiply before you subtract or add.

So 3 * 19 = 57 then subtract 5 you get 52.

Next 2 * 19 = 38  then 38 + 14 = 52

Leslie has a watering can that holds 1 liter of water. She uses 250 milliliters of water on each of her plants. How many plants can she water? *remember 1L = 1000 milliliters of water

Answers

Answer:

4 plants

Step-by-step explanation:

convert the capacity of the watering can to millimeters

1L = 1000 milliliters

1 x 1000 = 1000 millimeters

Plants that can be watered = capacity of the watering can / amount of water a plant needs

1000 / 250 = 4 plants

t=4s+2 complex tablet

Answers

Answer:

Value of t = 2 when value of s = 0

Value of t = 6 when value of s = 1

Value of t = 10 when value of s = 2

Value of t = 14 when value of s = 3

Step-by-step explanation:

Given Equation:

t = 4s + 2

Complete the table if values of s are as follows;

s = 0

s = 1

s = 2

s = 3

Computation:

t = 4s + 2

By putting s = 0

So,

t = 4s + 2

t = 4(0) + 2

t = 0 + 2

Value of t = 2 when value of s = 0

By putting s = 1

So,

t = 4s + 2

t = 4(1) + 2

t = 4 + 2

Value of t = 6 when value of s = 1

By putting s = 2

So,

t = 4s + 2

t = 4(2) + 2

t = 8 + 2

Value of t = 10 when value of s = 2

By putting s = 3

So,

t = 4s + 2

t = 4(3) + 2

t = 12 + 2

Value of t = 14 when value of s = 3

9. The formula V=lwh is the volume formula for a rectangular prism. Find the length (l) of a prism with volume (V) 1200 cm³, width (w) 15 cm, and height (h) 8 cm.
A. 6 cm
B. 8 cm
C. 10 cm
D. 14 cm
please show how you got the answer!​

Answers

Answer:

C. 10cm

Step-by-step explanation:

First we can rearrange the equation to solve for length (l):

V = lwh

Divide both sides by wh:

l = V/(wh)

Substitute in known values:

l = 1200/(15x8)

l = 1200/120

l = 10cm

Hope this helped!

Find 23-54 and 54-23
PLZ ANSWER IT STEP BY STEP

Answers

Answer:

23-54= -31

54-23= 31

Step-by-step explanation:

So I knew 54-23 is positive 31 and if they were switched it will be a negative 31

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