The more time Paula studies for a test, the fewer mistakes she makes. What is the pattern of association between time studied and number of mistakes ?

A. Negative association

B. Positive association

C. Varied association

D. No association

By using properties for exponents, we will see that the equivalent expression is:

[tex]2x^{-4}y^6[/tex]

Here you need to remember the property:

[tex]a^n/a^m = a^{n - m}[/tex]

We have the expression:

[tex]\frac{-4x^{-3}y^4}{-2xy^{-2}}[/tex]

We can separate the fraction to:

[tex]\frac{-4x^{-3}y^4}{-2xy^{-2}} = \frac{-4}{-2}*\frac{x^{-3}}{x} *\frac{y^4}{y^{-2}}[/tex]

Now we can simplify by using the above relation, we will get:

[tex]\frac{-4x^{-3}y^4}{-2xy^{-2}} = \frac{-4}{-2}*\frac{x^{-3}}{x} *\frac{y^4}{y^{-2}} = 2*x^{-3-1}*y^{4 - (2)} = 2*x^{-4}*y^6[/tex]

So the correct option is the last one.

If you want to learn more about exponents, you can read:

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[tex]\\ \rm\Rrightarrow (-4x^{-3}y^4)\div(-2xy^{-2})[/tex]

[tex]\\ \rm\Rrightarrow 2x^{-3-1}y^{4+2}[/tex]

[tex]\\ \rm\Rrightarrow 2x^{-4}y^6[/tex]

Option D

Answer:

y = -2

x = 4

Explanation:

Make "x" subject in equation 2

Insert this in equation 1

Find for x

Answer:

let b = amount of balloons; 10b = 120

Step-by-step explanation:

to do this you should first have a let equation

let b = balloons

then because 10 times the number of balloons is 120 you multiply them

it looks like this

10b = 120

There are 12 inches in every foot and the area will be increased by 144 factors.

We know that the feet and inches are the units of length. One foot is 12 inches.

The length and the breadth are given as 11 feet and 13 feet.

The area of the bedroom is 143 square feet.

We know that 1ft = 12 in

So, The length would become 11 feet to 132 inches.

The breadth would become 13 feet to 156 inches.

The area of the rectangle = length × Width

Therefore, the area of the rectangle = 132 ×  156

Since area of the rectangle= 20592 in .sq

The area of the bedroom increased by 144 factors.

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Answer:

There are 12 inches in every foot.

The length and width will increase by a factor of 12.

The area will increase by a factor of 144, since area is length times width.

Step-by-step explanation:

branlist ?

correct on edge 2022

Answer:

c = 289

Step-by-step explanation:

The discriminant is equal to zero. a = 1, b=34

[tex]b^{2} -4ac=0\\(34)^{2} -4(1)c=0[/tex]

[tex]1156-4c=0[/tex]

[tex]-4c=-1156[/tex]

[tex]c=\frac{-1156}{-4} =289[/tex]

Hope this helps

Answer:

t=4

Step-by-step explanation:

Let's solve your equation step-by-step.

4t−2=14

Step 1: Add 2 to both sides.

4t−2+2=14+2

4t=16

Step 2: Divide both sides by 4.

4t

4

=

16

4

t=4

Answer:

t=4

10p

hope it really helps...!!!

Answer:

10p

Step-by-step explanation:

3 +7 =10

p+p=p

3p+7p=10p

[tex]\huge\fcolorbox{blue}{aqua}{Answer:}[/tex]

════════════════════

Elaine has 14 3/4 cups of flour. She divides the flour into equal portions of 2 7/8 cups. Which is the best estimate for the number of portions she can make?

Answer: [tex]= 5[/tex]

Solution:

[tex]14 \frac { 3 } { 4 } \div 2 \frac { 7 } { 8 } =[/tex]

[tex]\frac{\left(14\times 4+3\right)\times 8}{4\left(2\times 8+7\right)} [/tex]

[tex]\frac{2\left(3+4\times 14\right)}{7+2\times 8} [/tex]

[tex]\frac{2\left(3+56\right)}{7+2\times 8} [/tex]

[tex]\frac{2\times 59}{7+2\times 8} [/tex]

[tex]\frac{118}{7+2\times 8} [/tex]

[tex]\frac{118}{7+16} [/tex]

[tex]\frac{118}{23} [/tex]

=[tex]5 [/tex]

I evaluated it so the answer is= Letter B.[tex]5 [/tex]

════════════════════

Explanation:

#Carry on learning

This means that a graph of Kassie speed given by the function d = 1.22t would have a slope of 1.22 m/s.

An equation is an expression that shows the relationship between two or more numbers and variables.

Let d represent the number of meters she swims in t seconds. Hence:

d = 1.22t

This means that a graph of Kassie speed would have a slope of 1.22 m/s.

Find out more on equation at: https://brainly.com/question/1214333

Answer:

the answer is 12.61 so that means it's c

Answer:A(24,48) B(72,24)

Answer:

where are the numbers

Step-by-step explanation:

Answer:

7,986

Step-by-step explanation:

Picture that shows steps and how to do it with formula!!

Hope this helped!!!

~ Kaitlyn

Step-by-step explanation:

just apply the formula you can find immediately on the internet.

that is much faster than putting such a calculation question in here.

the area of a circle is

pi×r²

with r being the radius.

so, in our case we have

pi × 3² = pi × 9 = 28.27433388... ft²

when using 3.14 for pi we get 28.26 ft²

Answer:

0

Step-by-step explanation:

Given

Formula

Solving

Slope:-

[tex]\\ \rm\dashrightarrow m=\dfrac{-8+8}{-4-2}[/tex]

[tex]\\ \rm\dashrightarrow m=\dfrac{0}{-6}[/tex]

[tex]\\ \rm\dashrightarrow m=0[/tex]

Answer:

2/2

Step-by-step explanation:

all the number are either improper or mixed number etc.

2/2= 1

and u wanted to know which equals one and that is 2/2 because it is 1 whole.

Answer:

4

Step-by-step explanation:

Hey there!

To figure this out you need to calculate 4/16

that is 1/4

which is the size of one of the 1/4 circles

1/4 is equal to 4/16 which means the answer is 4

Answer:

210 x 21 = 4410 calories burned for 1 adult

4410 x 8 = 35280 calories burned for 8 adults

Step-by-step explanation:

First you figure out how much calories are burned total for 1 adult on a 21 hour bike ride with the information that you know of how much adults burn.

Next you multiply your answer by 8 to figure out the total of calories burned for all 8.

Step-by-step explanation:

35280 calories would be burnt.

I think it will help you.

210×21=4410

Now,

4410×8= 35280.

Answer:

~ 3.473

Step-by-step explanation:

Assuming that theta means the middle angle at the origin, you are simply finding the sine of -10, and then multiplying it by -20.  Using a scientific calculator, sin -10 comes out to about -0.174.  Multiplying this by -20 gives us about 3.473.

Hope this helps!

Answer:

2.6

Step-by-step explanation:

Divide 8.1 by 2.5

2.6

2.6 rounded to the nearest whole number is 3

3 is your answer

The best statement that compares the length of time each ball is in the air is seen in the second option.

A quadratic function follows the condition: f(x) = ax² + bx + c. Here (a, b, and c) are real numbers and a ≠ 0.  

From the given information:

Where;

The table given is as follows:

Time (in seconds)                 height, g(t) in feet

0                                             4

1                                              36

2                                              36

3                                              4

From the table, when t = 0, the function becomes:

f(t) = -16t² +64t + 5

f(t) = -16(0)² + 64(0) + 5

f(t) = 5

Therefore, we can conclude that the best statement that compares the ball is: f(t) is in the air for about 5 seconds, and the ball represented by g(t) is in the air for about 3 seconds.

Learn more about the function of a quadratic equation here:
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Answer:41 tiles

Step-by-step explanation: this is assumption from other work of the 10x14.225 picture

Answer:

not possable to answer.

Step-by-step explanation:

Answer:

0.000008 eight millionths is the most accurate answer I came to.

[tex]0.02 * 0.02 = 0.0004 * 0.02 = 0.000008[/tex]

Answer:

The final cost before sales tax is $475.

Step-by-step explanation:

you add the 30% to the 20% and that equals 50% off. Which is half off so you have to divide $950 by 2. That equals $475. Easy :)

Answer:

A, C, D

Step-by-step explanation:

P = 2L + 2W

L = 5W - 2

P = 2(5W - 2) + 2W

P = 10W - 4 + 2W

P = 12W - 4

Answer choices A, C, and D = 12W - 4

I hope this helps!

Answer:

C. 0.75

Step-by-step explanation:

P(A or B) = P(A) + P(B) - P(A and B)

P(A or B) = 0.60 + 0.30 - 0.15

P(A or B) = 0.75