can some one help me i'm im elementary and i do not know wut to do

Answer:

The percent error

10%

Step-by-step explanation:

275 - 250 = 25

25/250 = 0.1

0.1*100 = 10%

Answer: 10%

Step-by-step explanation:

Answer:

(10,1) (15,1) (20,13) (25,7)

Step-by-step explanation:

The arrows show what it match up to that order

Answer:

lk

Step-by-step explanation:

Answer:

2.8867

Step-by-step explanation:

9.8x+17=7.6x-16

We move all terms to the left:

9.8x+17-(7.6x-16)=0

We get rid of parentheses

9.8x-7.6x+16+17=0

We add all the numbers together, and all the variables

2.2x+33=0

We move all terms containing x to the left, all other terms to the right

2.2x=-33

x=-33/2.2

x=-2.8867

Answer:

y= 2/5x +1

or 5x-2y=5

Step-by-step explanation:

Answer:

The Flower Garden is not in the shape of a right Δ

Step-by-step explanation:

~ To prove that this garden is in the shape of a right triangle, it can be done so through contradiction ~

Pythagorean Theorem is applied to a right triangle, so we can say that the two legs are 10 and 7 feet, the hypotenuse being 13, knowing it is the longest side;

a^2 + b^2 = c^2,

10^2 + 7^2 = 13^2,

100 + 49 = 169,

149 ≠ 169,

So the Flower Garden will not be in the shape of a right Δ

Answer:

x=7

Step-by-step explanation:

Answer:

y = 8

Step-by-step explanation:

Given the relationship is direct then the equation relating the quantities is

y = kx ← k is the constant of proportion

To find k use the condition when y = 16, x = 4, then

16 = 4k ( divide both sides by 4 )

4 = k

y = 4x ← equation of proportion

When x = 2, then

y = 4 × 2 = 8

A) The expression for Luke's weight loss over the 3 weeks is;

¹³/₄x - ¹/₂ pounds

B) The expression for Liam's weight loss over the 3 weeks is;

²¹/₄x - ⁹/₂ pounds

C) The number of pounds Luke lost in the first week is;

x = 2 pounds

D) The number of pounds Luke and Liam each lost over the three weeks is;

6 pounds

Weight luke lost in the first week; x pounds

Weight he lost in the second week is 3/2 pounds less than 3/2 times the pounds he lost in the first week. Thus;

Weight luke lost in the second week = ³/₂x - ³/₂ pounds

In the third week, he lost 1 pound more than 3/4 of the pound he lost in the first week. Thus;

Weight luke lost in the third week = (³/₄x) + 1 pounds

Total weight lost by luke in 3 weeks = x + ³/₂x - ³/₂ + ³/₄x + 1

⇒ ¹³/₄x - ¹/₂

First week he lost 1 pound less than 3/2 times the pounds luke lost in the first week

Weight Liam lost in the first week; ³/₂x - 1 pounds

Weight he lost in the second week is 4 pounds less than 5/2 times the pounds luke lost in the first week. Thus;

Weight Liam lost in the second week = ⁵/₂x - 4 pounds

In the third week, he lost 1/2 pound more than 5/4 of the pound luke lost in the first week. Thus;

Weight Liam lost in the third week = (⁵/₄x) + ¹/₂ pounds

Total weight lost by Liam in 3 weeks = ³/₂x - 1 + ⁵/₂x - 4 + ⁵/₄x + ¹/₂

⇒ ²¹/₄x - ⁹/₂ pounds

We are told that Luke and Liam lost same weight over 3 weeks. Thus;

¹³/₄x - ¹/₂ = ²¹/₄x - ⁹/₂

⇒ ²¹/₄x - ¹³/₄x = ⁹/₂ -  ¹/₂

⇒ 2x = 4

x = 4/2

x = 2

Thus, total weight lost by Luke and Liam each = ¹³/₄(2) - ¹/₂ = 6 pounds

Read more at; https://brainly.com/question/11689969

Answer:

Step-by-step explanation:

Using the graph we can notice something

let's take the abscissa  -2 and -4

so we can say that :

f(-4)=g(-2)

wait we khow that g(x)=f(k*x)

so x= -2 then let's replace it in the expression : f(k*x)

we get f(-4)=g(-2)=f[k*(-2)]

let's solve the equation: -2k = -4

                                               k = -4/-2

                                                k=2

so finally we get k=2

let's check :

from the graph we get :

we have (-1)*2 = -2

so it is true

Answer: 0.78-(1-0.34)

Step-by-step explanation

To solve this equation you need to create an algebraic expression.

algebraic expression: mathematical statement with  at least 2 terms which can be numbers are variables.

To solve this expression:

1. Take the given info and put it in an equation

0.78-(1-0.34)

Answer:

$60.88

Step-by-step explanation:

2 yards wide and 2 yards high so thats 2 yards per side x 4 is 8, 8 x $7.61 is $60.88

hope this helps:)

Answer:

C

Step-by-step explanation:

It isn't B because the point does not start at 600 and it is not A because it shows the entire decrease of the mass in one millennium. The correct answer is c.

Answer:

x - y

Step-by-step explanation:

if x is greater than y subtraction will be the result with a positive number.

Answer:

n/a

Step-by-step explanation:

As there are multiple questions, I can explain the concept (lmk if you need a specific answer).

Example 1:

-5 - 2 = -7  (basically taking 2 away from -5)

Example 2:

3−(−6) = 3 + 6              -4 - (-2) = -4 + 2

- These are the main two rules I found and hopefully you found it useful.

Answer:

164

Step-by-step explanation:

Multiply

Answer:

1/4

Step-by-step explanation:

.

Answer:

put it all together and write normally

Step-by-step explanation:

-8.02 should be rounded to -8

(though, in that case 72 should be -72)

Answer:

Step-by-step explanation:

volume of water=l×w×h

l=length of tank=36 in

w=width of tank=18 in

h=height of water=14 in

volume=36×18×14

=9072 in³

Answer:

Hello!!

If Joe brought 17 packs of cola to a party, and each pack had 8 cans. Teresa brought 6 cans of juice. They brought 142 cans in all.

Step-by-step explanation:

\(17\)×\(8=136\)

\(136+6=142\)

Hope this helps!!

Answer:  31

Step-by-step explanation: Addition, 17 + 8 = 25 + 6 = 31

This answer was generated by an AI and may be incorrect.

The number of solutions to a system of linear equations can be determined by finding the point where the lines intersect. If the lines intersect at exactly one point, the system has a unique solution. If the lines are coincident, the system has infinitely many solutions. If the lines are parallel, the system has no solution.

From the graph, we can see that the two lines intersect at exactly one point, which means that the system of linear equations has a unique solution.

Answer:A possible algebraic expression to represent the total cost of the rental is Total cost: x + yd.What is an algebraic expression?In mathematics, algebraic expressions are a combination of numbers, letters, and mathematical signs (+ - x /) often used to represent a value.How to write an algebraic expression?Here are the steps to write this expression:1. Identify the variables that you need to include: In the case of the tuxedo rental there are three variables or factors.The rate initially paid for renting the tuxedo one day.The rate he needs to pay every additional day.The number of additional days.All of these variables can be expressed using letters because we do not know the exact value of each.2. Use appropriate mathematical signs to relate the previous factors: In this case, we know the number of days should be multiplied by the rate for additional days and this should be added to the rate he initially paid.Total cost: x + yd

Step-by-step explanation:

Answer:

Looks like the top left

Answer:

It's the 1st one from the left!

Step-by-step explanation:

The probability that a student studied for 5 hours is 0.23 Or 23%.

Probability is the chance of occurrence of a certain event out of the total no. of events that can occur in a given context.

A table is given where the first column represents the number of hours a student studied maths and the second column represents the number of students.

The sum of the second column is 30 so it is the total number of students

And only 7 of them studied mathematics for 5 hours.

Therefore, The probability that a student studied for 5 hours is,

= 7/30.

= 0.23 or 23%.

learn more about probability here :

https://brainly.com/question/743546

#SPJ2

Answer:

4 because it has to be more than 5

Step-by-step explanation:

4+2=6

Hope this helps and mark brainliest please!

Answer:

Jenny needs to sell 4 more toys.

Step-by-step explanation:

Jenny has to sell more than 5 toys, so she must sell 6. Since 6-2 =4, Jenny has to sell 4 more toys.

Answer:

????????

Step-by-step explanation:

Explanation&Answer:

Getting younger which is negative (down/backward)

Four times as old as now

but... 5 yrs ago - Five times as old that yr ago

So... to make it easier we can use the number line

<  -5  -4  -3  -2  -1  0  1  2  3  4  5 >

Add 4... we always start at ZERO

Which is positive 4

5 yrs ago which is at negative 1 ( -1 ).... Five times

So we will add 5... we will end at 4

ANSWER:

Positive FOUR (+4)

Answer:

Step-by-step explanation:

A cereal box has a height of 32 centimeters. It has a base with an area of 160 square centimeters.

What is the volume, in cubic centimeters, of the cereal box?