How do I do this problem

How Do I Do This Problem

Answers

Answer 1

Answer:

The Ross family used it for 15 hours

The Watson family used it for 20 hours

Step-by-step explanation:

We can rewrite this word problem using variables.

[tex](x*40)+(y*20)=1000[/tex] and [tex]x+y=35[/tex]

Now we can split 35 between x and y. Since 35 can't be split into a whole number, I have split it into 17 and 18

(17*40) + (18*20) = 1040

This is close but 40 too much. Since this is 40 off, we need to move 2 more hours to the Watson family.

(15*40) + (20*20) = 1000

This means -

The Ross family used it for 15 hours

The Watson family used it for 20 hours


Related Questions

Verify that -(x+y)=(-x)+(-y) when x=3/4 and y=2/5

Answers

Answer:

note that when opening the bracket the value outside the bracket with be used to multiply all the values inside the bracket... for example -(3/4+2/5) the (-) subtraction sign will be used to multiply all the values in the bracket including the addition sign therefore changing plus to minus

Will I fail the grade if I fail the OST ( Ohio state test) ?

Answers

Step-by-step explanation:

Yes,it maybe.Because the grade depends on your test.

Answer:

100%

Step-by-step explanation:

Crush kita matagal na

Find a description this equation represents. Of the numbers​ 1, 2,​ 3, 4, and​ 5, which are solutions to the​ equation? 3x-8=7

Answers

Answer:

5

Step-by-step explanation:

3x - 8 = 7

collect like terms

3x = 8 + 7

3x = 15

divide both sides of the equation by 3

x = 15/3 = 5

The sum of two numbers is 52 and the difference is 16. What are the numbers?

Answers

Answer:

18

Step-by-step explanatio:a 52 le quitas la diferencia de 16 y da 36 que lo divides entre 2 y es 18 por lo que 18+18=36+16=52

Step-by-step explanation:

[tex]here \: is \: your \: solution \\ \\ let \: the \: first \: number \: be \: x \\ \\ let \: the \: second \: number \: be \: y \\ \\ now \: according \: to \: question \\ \\ x + y = 52 \\ \\ and \: x - y = 16 \\ \\ now \: add \: both \: equation \\ \\ we \: will \: get \: \\ \\ 2x = 68 \\ \\ x = 68 \div 2 \\ \\ x = 34 \\ \\ now \: put \: the \: value \: of \: x \: in \: equation \\ \\ 34 + y = 52 \\ \\ y = 52 - 34 \\ \\ y = 18 \\ \\ x = 34 \: and \: y = 18 \\ \\ hope \: it \: helps[/tex]

– 4 x = – 32

X =

What is X ?

Answers

Answer:

x=8

Step-by-step explanation:

Answer:

[tex] \huge\purple{ \mid{ \underline{ \overline{ \tt ♡ ANSWER ♡ }} \mid}}[/tex]

[tex] - 4x = - 32 \\ x = \frac{ - 32}{ - 4} \\ x = 8[/tex]

The value of x is 8.

ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ

What is the volume of the composite solid? 6 m 4 m 3 m 4 m 4 m

Answers

Answer:

Please read explanation

Step-by-step explanation:

A picture would be helpful, but I think the answer might be (6x4x3)+(3x4x4). If your shape is made up of many parts, you should find the volume of each shape then add them up to find the total volume. (To find volume, multiply base x height x width) If you could give a picture, it would be very helpful because I don't really know which numbers I should multiply to find volume. I hope this explanation helps, and please comment if you need to ask me anything.

Answer:

Answer is 136 cubic meters

Step-by-step explanation:

Which of the following cannot be solved using nPr?

permutations of the letters of the word "OF"
permutations of the letters of the word "PERMUTATION"
permutations of the letters of the word "THINGS"
permutations of the letters of the word "N"

Answers

Answer:

permutations of the letters of the word "PERMUTATION"

Step-by-step explanation:

The number of permutations of the letters of the word "PERMUTATION" cannot be solved using nPr. The correct answer is B.

What is the permutation?

The permutation is defined as considered an ordered combination.

The following formula computes the permutation of r items from n:

P(n, r) = n! /(n-r)!

here order matters and repetition is not allowed.

Therefore, nPr cannot be used to solve problems that involve repeating items or where order does not matter.

As per the question, the permutations of the letters of the word "OF", "THINGS", and "N" involve distinct letters and no repetition, so they can be solved using nPr.

However, the word "PERMUTATION" has repeated letters.

Therefore, the number of permutations of the letters of the word "PERMUTATION" cannot be solved using nPr because it does not account for repeated items.

Learn more about the permutations here:

https://brainly.com/question/1216161

#SPJ2

What is the volume of the right rectangular prism shown?
A)
96 cm3
B) 128 cm3
C) 512 cm3
D) 1,536 cm3

Answers

B thats my best guess but sorry if its wrong

At a local gardening store, a palm tree is 1.2 ft taller than a
cactus. The palm tree is 4.9 ft tall. Use the equation 4.9 = c + 1.2
to find the height in feet, c, of the cactus. Show your work.

Answers

Answer:

c = 3.7

Step-by-step explanation:

c + 1.2 = 4.9

c = 4.9 - 1.2

c = 3.7

what the answer to this qoution

Answers

Answer:

the slope is -2/1 or -2x

equation is y= -2x-5

Find the volume and surface area. Round to the nearest hundredth when necessary.

Answers

Hope you r having a nice day

4x-2z=y solve the equation in terms of x.

Answers

x=1/4y+1/2z or x=1/4y

Which expression has the same value as -5x + 10y?

Answers

Answer:

-5x-(-10y)

Step-by-step explanation:

-5x-(-10y)

-5x+Both expression are the same

daniella made a table and a graph for the equation y=3x did daniella make these items correct select true statement

Answers

Answer:

B

Step-by-step explanation:

if you can see in the graph, the graph axes calculation is not the same with the one given.

Find the solution to the system of equations using graphing
y = -7/4x - 4
y = - 1/4x + 2

Answers

Answer: look at the picture

Step-by-step explanation: Hope this help :D

Is answer of this right or wrong.Pls help me​

Answers

Answer:

pretty sure thats right!

Step-by-step explanation:

we just tested on this

I hope so but if it’s wrong you can always check back with me

Square tiles measuring 4 inch on each side will be used to tile a 1-foot by 1-foot area. How many of these tiles are needed?

Answers

Answer:9

Step-by-step explanation:

4 inches fits into 12 inches three times. Three rows multiplied by three columns equals 12.

Hope that helps!

I need help with this

Answers

The answer is b. It cannot be c cause the answer would be a negative number. It cannot be a because there would be more than 100 lollipops altogether. And it cannot be d because the answer would be a fraction. There was 29 lollipops altogether. Hope this helps!

In ΔQRS, the measure of ∠S=90°, the measure of ∠Q=83°, and RS = 7 feet. Find the length of SQ to the nearest tenth of a foot.

Answers

Answer:

x ~0.9

Step-by-step explanation:

To solve for (x) in the given right triangle, use the trigonometric ratios, which are the following,

[tex]sin(\theta)=\frac{opposite}{hypotenuse}\\\\cos(\theta)=\frac{adjacent}{hypotenuse}\\\\tan(\theta)=\frac{opposite}{adjacent}[/tex]

Each of the sides of a triangle is named with respect to the given angle. In this problem, one is given the side opposite to the given angle, and the side adjacent to it. Use the ratio of tangent (tan) to solve for the unknown side.

[tex]tan(83)=\frac{7}{x}[/tex]

Manipulate the equation so that it is solved for (x),

[tex]x=\frac{7}{tan(83)}[/tex]

x ~ 0.859

A 65 kg rock climber goes up a cliff. What is his potential energy if he is 35m from the
Base as of the cliff?

Answers

Answer:

22295 Joules

Step-by-step explanation:

Potential energy   = mgh

⇒Potential energy=65 × 9.81 × 35=22295 J

NB 9.8 can be substituted with 9.81 or 10 depending on what they provide the constant as.

200 + 50 = 250
How much percentage did you raise the price?

Answers

Answer:

25%

Step-by-step explanation:

If you raised it by 50.

[tex]\frac{200}{50} =\frac{100}{y}[/tex]

200 × y = 50 × 100

200y = 5000

200y ÷ 200 = 5000 ÷ 200

y = 25

Type the correct answer in the box.

The area of the figure is ___ square units.

Answers

Answer:

26 square units

Step-by-step explanation:

We are given a diagram and are asked to find the area of the figure in square units.

To solve, take in mind that we need to multiply the sides given.

Area is L * W, therefore, we know that our length is 5 by 2 units, while our width is 3 by 2 units.

First start with the length, since it is 5 by 2 we multiply 5 and 2 :

5 * 2 = 10

Then with the width, since it is 3 by 2, we can multiply 3 and 2 :

3 * 2 = 6

Then do the length again since the bottom part of the diagram needs to be included, it is also 5 by 2 :

5 * 2 = 10

Add all these together to get your answer :

10 + 6 + 10

16 + 10

26 square units.

Patty gives the birds at a sanctuary 20 ounces of seed each day.
How much bird seed does she use in 160 days?

Answers

Answer:

3200

Step-by-step explanation:

Use the equation, 16^2x=32^(x+3), to complete the following problems.
Rewrite the equation using the same base.
Solve for x. Write your answer in simplest form

Answers

Answer:

x = 5

Step-by-step explanation:

2⁴(2x) = 2⁵(x + 3)

2^8× = 2^5x + 15

cancel out the 2

8x = 5x + 15

8x - 5x = 15

3x = 15

divide through by 3

x = 5

x=2
y=4
pls make it into an ordered pair

Answers

The answer should be Y=2x+7

i need help with this please.

Answers

Answer:

f )  x+72=90(complementary angle)

x= 90-72

x=18

g )x+77=90

x=90-77

x=13

plz give me thanks

Need help fast!!!
Use the number line to compare the numbers.
Drag and drop the numbers to place them in increasing order.

Answers

Answer:

the sequence of numbers starting left to right is: -2 -1.6 -1 -1/6 0 3/7 0.6 1 2  

Step-by-step explanation:

Answer:

Ok so -1.6 goes in between -2 and -1.  Then -1/6 goes in between -1 and 0. Then 0.6 goes between 0 and 1. And last 3/7 goes between 1 and 2. 

Step-by-step explanation:

hope this helps you :)

DILLIGAF HAHAHAHAHAHAH

Answers

Answer:

does it?

Step-by-step explanation:

Just a few more, help??????????

Answers

Answer:

53

Step-by-step explanation:

complementary angle meaning it needs to have the whole sum of 90 degree.

90-37=53

PLEASE HELLP 20+ POINTS !!! THIS IS VERY IMPORTANT (NO SPAMMING, LINKS OR GUESSING)

Answers

I'm 99.1% sure that it's B
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