Mathematics Middle School

PLEASE HELP!!!!!!!

Which of the following functions represent exponential decay?
y = -2 x
y =(1/2)^ x
7 = 2^ 0.5x
y = 2^x

Answers

Answer 1

Answer: C) y=2^0.5x

Step-by-step explanation:

Trust me pls

Related Questions

Which of the following expressions has a simplified value of 3a – 2?



HELP ME PLEASE X(

Answers

The answer would be A i hope this helped
The best answer would be B.


Let x represent the number of adults entering the movie theater and let y represent the cost,in dollars,of admission to the movie theater.Write an equation to illustrate the relationship between the number of adults entering the theater and the cost in dollars for admission

Answers

The correct answer is YES hope this helped
The answer is yes hopefully I’m right

use Sigma notation to represent the sum of the first seven terms of the following sequence -4, negative 6, negative 8

Answers

Answer:

Sigma means summation and here the common difference is of -2 you so write

Step-by-step explanation:

€ from i equals -4 to - 16 into sigma r

Lucita does the division problem 3.302 ÷ -1.27, and gets -0.026. She doesn't understand this result because she had estimated the answer to be -3. What was Lucita's mistake?
A: Lucita's estimate is too low.
B:The decimal point should be to the left of the 2.
C:The decimal point should be to the left of the 6.
D:Lucita's estimate is too high.
Thank you to those who end up helping, xx

Answers

Lucita does the division problem. My dad told me you divide the biggest number. (3.302) with the little valued number (1.27) She doesn't understand not because (A) her estimate is too low.

So that leaves A eliminated.

It shouldn't be B because, you have to count the numbers to the left of the decimal.

So that leaves B eliminated.

Let's talk about D, Her estimate is too high. But, take a risk. Either choose C or D. Good luck! I really think this would help thanks to my dad's method.

Ankur estimated the quotient of 15 and one-third divided by (negative 4 and two-thirds) to be 3. Which best describes his error?
Ankur multiplied the compatible numbers 15 and –3.
Ankur found that the quotient of a positive number and a negative number is negative.
Ankur found that the quotient of a positive number and a negative number is positive.
Ankur added the compatible numbers 15 and –3.

Answers

Answer:

123/78

Step-by-step explanation:

Answer:

its C, Ankur found that the quotient of a positive number and a negative number is positive.

Step-by-step explanation:

i got it right on edge

Find an expressiom for the shaded region. Simplify.

Answers

Answer:

x is 2 x is 1 2x-2=0 x-2 =1

Yes that is the answer

A line passes through the points (1, 4) and (3, –4). Which is the equation of the line?

Answers

y = -4x + 8

First you need to find the slope of the line.

The slope formula is m = y2-y1/x2-x1

If you plugged in the points it would be m = -4-4/3-1

so m = -8/2 = -4

so the slope is -4

now we need to write the equation of the line

for this u use point slope form

the formula for that is y-y2=m(x-x1)

so if you plug it in it would be:

y-(-4)=-4(x-3)

now you solve

y+4=-4x+12

y+4-4= -4x+12-4

y = -4x + 8

and now you have the slope of the line

I hope this helps! :)

Plz and thank you I need help

Answers

Answer:

ummm there is nothing

Step-by-step explanation:

it’s not working right :/

6/7 2/2 in simple form

Answers

Answer:

6/7 simplest form is 6/7

2/2 simplest form is 1/1

Tell me if wrong!

Step-by-step explanation:

What is the slope of this line?

−36
negative 3 sixths

−2
negative 2

−12

Answers

Answer:

its -2

Step-by-step explanation:

Answer:

-2

Step-by-step explanation:

The rise is -6 and the run is 3.

[tex]\frac{rise}{run}= \frac{-6}{3}[/tex]

-6 divided by 3 is -2.

Hope this helps :)

Evaluate if x=5 x^2+10

Answers

Answer:

[tex]35[/tex]

Step-by-step explanation:

To evaluate the expression:

[tex]x^2+10[/tex]

First, consider the given information:

[tex]x=5[/tex]

Substitute the given value of [tex]x[/tex] into the expression:

[tex]5^2+10[/tex]

(Note that [tex]5^2[/tex] is the same as [tex]5*5[/tex])

[tex]5*5=25[/tex]

[tex]5^2=25[/tex]

Add:

[tex]25+10=[/tex]

[tex]35[/tex]

-

We can check our work by setting our solution equal to the initial expression:

[tex]x^2+10=35[/tex]

Substitute [tex]x[/tex] for its given value:

[tex]5^2+10=35[/tex]

Simplify [tex]5^2[/tex]:

[tex]25+10=35[/tex]

Add:

[tex]35=35[/tex]

Since both sides of the equation are equal, our solution is correct!

Answer:

35

Step-by-step explanation:

Because X=5, the equation is literally just asking 5x5=10. So, following the order of operations, I would do 5x5 first which equals 25 plus 10. Since 25+10=35.  The answer is 35. Hope this helps! :p

The rate to rent a truck for a day is a one-time fee of $35 and $0.20 per mile.

Write an expression to model this situation.
How far could you travel if you drove 40 miles?

Answers

Answer: y= $0.20x + $35 or y= $0.20 * 40 + $35 (Depending on what you mean)

Step-by-step explanation:

The equation for these types of problems is y = mx + b.

M would be $0.20, because that is the value that can repeat, based on x. For example, if this was 2 dollars per mile (m) for 3 miles, (x) than y, the total amount for mx would amount to 6 dollars.

Now, 35$ Is a one time fee (b), so you can add that separately to $0.20x.

If you plug everything in, you would get y= $0.20x + $35.

I am not very sure about what you mean by “ How far you could you travel if you drove 40 miles”, but if you mean how much would you pay to drive 40 miles, I can help there.

Now that we know x would be the amount of miles, we can plug that into the equation.

You would get y= $0.20 * 40 + $35.

Sorry, I’m not that good at explaining, but I hoped this helped!

y= .20x + 35

It would cost $43 to travel 40 miles

On the map below, city p and city q are 5.5 centimeters (cm) apart. What is the actual distance between city p and city q? 2cm= 35 miles

Answers

Answer:

96.25

Step-by-step explanation:

5.5/2=2.75

2.75x35=96.25

Ok so 2cm = 35 miles
Meaning ONE centimeter is 35/2, or, 17.5 miles of actual distance
And half, or 0.5 of a centimeter is 17.5/2 or 35/4, which is 8.75 miles
5 centimeters is 2 + 2 + 1 + 0.5
(35 miles) plus (35 miles) plus (17.5 miles) plus (8.75 miles) which would add up to be 96.25 miles

Match the inequality to the correct verbal description. "n is less than the difference of 40 and 60.
A.n<40-60
B.n>40-60
C.-40>60
D.n-60<40​

Answers

A is the answer hope it helps you

2. Li bought five lip balms. Each lip balm costs the same amount. She spent a total of $7.25.
(a) Write an equation that represents the situation. Use c to represent the cost of each lip balm.
(b) Represent the equation with a model.
(c) Solve and justify your solution.

Answers

Answer:

a)  5xd=7.25     d=dollars

b)  7.25/5=d

c)7.25/5=1.45

Step-by-step explanation:

Answer:

5 times 7.25=C

Step-by-step explanation:

Then all you need to do is multiply and you will get 36.25

I hoped this help and little I didn't understand everything you meant.

please help ill give brainliest

Answers

Answer:

-1

Step-by-step explanation:

its -1 because negative * negative is positive. so make the -10 a 10 and subtract 3 and boom you have 7.

Hope this helps ya

Answer:

S= -1

Step-by-step explanation:

To subtract integers you…
Pls, tell me the steps to subtract integers IN YOUR OWN WORDS PLS.

Answers

Answer:

Steps on How to Subtract Integers!

1. Keep the first number!

2. Change the operation from subtraction to addition!

3. Get the opposite sign of the second number!

4. Proceed with the regular addition of integers!

Step-by-step explanation:

1. Don't change the first number

2. Change  subtraction  to addition

 3. Get the opposite sign of the subtrahend

4. Go with the normal addition of integers

Which is true about the solution to the system of inequalities shown? y > 3x + 1 y 3x + 1 are solutions. Only values that satisfy y 3x + 1 or y < 3x – 3 are solutions. There are no solutions.

Answers

Answer:

there are you just got to find them

Its A because 3x+1y and the other ones wouldn’t be

(1) x + 4 > 8. If you need to solve for x, what's the first step?
(A) Subtract x from both sides. incorrect answer
(B) Subtract 4 from both sides. incorrect answer
(C) Subtract 8 from both sides. incorrect answer
(D) Add x to both sides.

Answers

Answer:

b

Step-by-step explanation:

b is the correct answer

What is the sum of 2/5 and -4/5?

A. -4/5
B. -2/5
C. 2/5
D. 4/5

Answers

Answer:

C

Step-by-step explanation:

Answer:

2/5 + (-4/5) = -2/5!

⭐ Please consider brainliest! ⭐

Step-by-step explanation:

Find the retail price if original price is 75$ and the markdown is 15%

Answers

Answer:

$63.75

Step-by-step explanation:

Answer:63.75

Step-by-step explanation:

Brad has walked 4/9 of his goal distance this month. If his goal is 27 miles, how many miles has Brad walked

Answers

Answer:

12 miles

Step-by-step explanation:

you would multiply 4/9 by 27 and you would get 12 miles in total.

12 miles !!!!!! Is correct :)

What is the answer to 4x+3x+x
I don't know but and it's 7x+x or just 7x

Answers

Answer:

7

Step-by-step explanation:

it’s 7x+x because the x counts as a 1 so it can’t just disappear

Please help me I will give you the brain thing and extra points (image below) 3/5

Answers

The answer is D! your Y is going down my 5 and your X is going up by 3 which makes it -5/3 . It’s -5/3 because (x,y) is coordinates and y/x is for fractions

In the expression shown "p" represents a rational number.

4p
`what value of "p" makes the expression equal a number less than 4?

Answers

Answer:

Is it supposed to be in in an equation?

Step-by-step explanation:

The answer is c
Trust me on this one

Write and simplify an expression that represents the perimeter of the parallelogram.

Answers

Answer:

14 x+8

Step-by-step explanation:

Parallelogram:  A parallelogram is a special type  of quadrilateral  in which opposite sides are equal and parallel.

We have to find  the perimeter of parallelogram

Perimeter of parallelogram= sum of all four sides

Let first side= 3 x+9

Second side= 4 x-5

third side= 3 x+9

fourth side side= 4 x-5(opposite sides of parallelogram are equal)

Perimeter=  3 x+9+ 4 x-5+ 3 x+9+ 4 x-5+

Perimeter= 14 x+ 8

Answer:

14 x+8

Step-by-step explanation:

PLZ ANSWER ASAP WILL MAKE BRAINLIEST FOR BEST ANSWER AND EXPLAIN YOUR ANSWER

Three friends participated in a fund-raising project. Dexter collected 2/5 of the total amount. Carter collected $272 more than Jack. Jack collected $764 how much did the three of them collect altogether?

There were 1,265 people at a boat show. After 1/5 of the adults and 1/3 of the children left, there was an equal number of children and adults at the show. how many people left the show?

Answers

lmâo your all on your own with this one

What is the slope of the line that passes through the points (4, 6)(4,6) and (-16, -18) ? (−16,−18)? Write your answer in the simplest form.

Answers

The slope of the line that passes through the points (4, 6)(4,6) and (-16, -18) is to be considered as the 1.2.

Calculation of the slope of the line:

here we used the following formula

So,

[tex]= y_2-y_1\div x_2-x_1[/tex]

So,

-18-6=-24

And,

-16-4=-20

Now

[tex]= -24\div -20[/tex]

= 1.2

Hence, The slope of the line that passes through the points (4, 6)(4,6) and (-16, -18) is to be considered as the 1.2.

Learn more about slope here: https://brainly.com/question/19062904

The slope of the line that passes through the points (4, 6) and (-16, -18) is; 6/5.

What is the slope?

The slope is the ratio of the vertical changes to the horizontal changes between two points of the line. Slope of parallel lines are same. Slopes of perpendicular lines are negative reciprocal of each other.

[tex]m = \dfrac{y-q}{x-p}[/tex]

Given that the line that passes through the points (4, 6) and (-16, -18)

WE need to find the slope of the line.

Since, [tex]m = \dfrac{y-q}{x-p}[/tex]

Therefore, m = -18 - 6 / -16 - 4

m = 24 / -20

m = 6/5

Hence, The slope of the line that passes through the points (4, 6) and (-16, -18) is; 6/5.

Learn more about slope here:

https://brainly.com/question/2503591

#SPJ2

Find the diameter of a circle with a circumference of 162π yd

Please help!
Thank you! :)

Answers

Answer: Isn't a circle always 360??

Step-by-step explanation:

Answer:

d ≈ 51.57

Sorry if this is not helpful.

PLEASE ANSWER ASAP! I ONLY HAVE 2 DAYS LEFT UNTIL MY COURSE ENDS AND I NEED TO GET MY GRADE UP TO B!!!

Answers

Step-by-step explanation:

81 - 1.2x <= 55

81 <= 55 + 1.2x

1.2x >= 26

x >= 26/1.2

x >= 21.66... (A)

Answer:

A

Step-by-step explanation:

Hope this helps

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