Is -21 a rational number

y+2=-1/2(X-10)

y=1/2X -5-2

Y=1/2X -7

Answer:

5 units

Step-by-step explanation:

Calculate the distance d using the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = (2, 5) and (x₂, y₂ ) = (5, 9)

d = [tex]\sqrt{(5-2)^2+(9-5)^2}[/tex]

   = [tex]\sqrt{3^2+4^2}[/tex]

   = [tex]\sqrt{9+16}[/tex]

   = [tex]\sqrt{25}[/tex]

   = 5

Answer:

-4.5

Step-by-step explanation:

Order this from least to greatest.

-8, -6, -5, -4, -3, -3

find the middle.

median = (-5 + -4)/2 = -9/2 = -4.5

[tex]\huge\textsf{Hey there!}[/tex]

[tex]\mathsf{\dfrac{-3 + -8 + -4 + -3 + -5 + -6}{6}}[/tex]

[tex]\mathsf{-3 + -8 + -4 + -3 + -5 + -6}[/tex]

[tex]\mathsf{= -3 - 8 - 4 - 3 - 5 - 6}[/tex]

[tex]\mathsf{-3 - 8 = \boxed{\large\textsf{\bf -11}}}[/tex]

[tex]\mathsf{ -11 - 4 - 3 - 5 - 6}[/tex]

[tex]\mathsf{-11 - 4 = \boxed{\large\textsf{\bf -15}}}[/tex]

[tex]\mathsf{-15 - 3 - 5 - 6}[/tex]

[tex]\mathsf{-15 - 3 =\boxed{\large\textsf{\bf -18}}}[/tex]

[tex]\mathsf{-18 - 5 - 6}[/tex]

[tex]\mathsf{-18 - 5 = \boxed{\large\textsf{\bf -23}}}[/tex]

[tex]\mathsf{-23 - 6}[/tex]

[tex]\mathsf{= \boxed{\large\textsf{\bf -29}}}[/tex]

[tex]\mathsf{= \dfrac{-29}{6}}[/tex]

[tex]\mathsf{= \boxed{-4.83333333333}}[/tex]

[tex]\boxec{\boxed{\large\textsf{Answer: \bf -4.83333333333 or }\mathsf{\bf \dfrac{-29}{6}\large\textsf{ both should work they both}}}}\\\boxed{\large\textsf{equal the same thing!}}\huge\checkmark[/tex]

[tex]\large\textsf{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

Answer: 2 units

Step-by-step explanation:

Volume = π r² h

157 = π (5)² h

h = 157 ÷ 25π

h = 2 units.

Answer:

$8.5

Step-by-step explanation:

divide 68.00 by 8

Answer: 942.48 [tex]Units ^{3}[/tex]

Step-by-step explanation:

First we find the area of the base (the circle) the formula for that is [tex]\pi r^{2}[/tex]

the radius is 5 because it is half the diameter.

so our base is 78.54

then we multiply that by the height

so 78.54 times 12 = 942.48

Answer:

4

Step-by-step explanation:

The slope will always be x's coefficient, or the number attached to x.

That's slope intercept form y = mx + b, where m is the slope, so we just read off the answer.

Answer: 4

Answer:

Step-by-step explanation:

I hope this was what you were looking for. Have a nice day!

Answer:

x= 3 /2 , x=−5

(2x−3)(x+5)=0

Step 2: Set factors equal to 0.

2x−3=0 or x+5=0

Answer:

[tex]60 \: degrees[/tex]

Step-by-step explanation:

[tex]180(n - 2)[/tex]

you have to put the number of sides for n

[tex]180(n - 2) \\ 180(6 - 2) \\ 180 \times 4 \\ = 720[/tex]

720 is the sum of interior angles. so to find the value of an angle you have to divide 720 by the number of angles.

[tex] \frac{720}{6} = 120 \: \: degrees[/tex]

we know that,

interior angle + exterior angle = 180 degrees

[tex]120 + z = 180 \\ z = 180 - 120 \\ z = 60 \: \: degrees[/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

Answer:

The maximum height of the arrow is 125 feet.

Step-by-step explanation:

The pathway of the arrow can be represented by the equation,

[tex]h = -16t^2 +80t + 25[/tex] .....(1)

Where h is height in in feet and t is time in seconds.

It is required to find the maximum height of the arrow. For maximum height, [tex]\dfrac{dh}{dt}=0[/tex].

So,

[tex]\dfrac{d(-16t^2 +80t + 25)}{dt}=0\\\\-32t+80=0\\\\t=\dfrac{80}{32}\\\\t=2.5\ s[/tex]

Put t = 2.5 s in equation (1). So,

[tex]h = -16(2.5)^2 +80(2.5) + 25\\\\h=125\ \text{feet}[/tex]

So, the maximum height of the arrow is 125 feet.

Answer:

Read below. Answers are bolded for you.

Step-by-step explanation:

1. 4-(-3)=4+3=7  (a negative and a negative is a positive)

2. 1/6 + 7/12=[tex]\frac{2}{12} +\frac{7}{12} =\frac{9}{12} =\frac{3}{4}[/tex] or 3/4

3. 0.24 - 1.6= -1.36

4. 2 3/5 x (-4/3)= [tex]2 \frac{3}{5} * -\frac{4}{3} =\frac{13}{5} *-\frac{4}{3} =-\frac{52}{15} =-3\frac{7}{15}[/tex] or -3 7/15

5. -24÷3.2=-7.5

Answer:

1. 7

2. 0.75

3. -1.36

4. -52/15

5. -7.5

Step-by-step explanation:

1. 4 - ( -3 ) = 4 + 3 = 7

2.  0.166 + 0.583 = 0.749 (round to the nearest hundredth) 0.75

3. 0.24 - 1.6 = 0.24 + -1.6 = -1.36

4. 13/5 * (-4/3) (easiest to multiply as not mixed fractions) = -52.15

-24 / 3.2 (think about -24 / 3 = -7 and -24 / 0.2 = -0.5 (-7 + -0.5)) = -7.5

I hope this helps lots! ^^

Answer:

[tex]12.5%[/tex]%

Step-by-step explanation:

[tex]\frac{25}{200}[/tex] is simplified to [tex]\frac{1}{8}[/tex], which in "perfect form," is [tex]12.5%[/tex]%

Answer:

12.5%

Step-by-step explanation:

$2 = 200c

200c ........ 100%

25c ................x%

x = 25×100/200

= 25/2

= 12.5%

Answer:

169

Step-by-step explanation:

13 to the 2nd power is 169

hope this helps!!

p.s. could you please help me with my recent question??

To find the wingspan of the real aeroplane, we use the scale of 5 cm to 13 m and set up a proportion comparing the model's wingspan of 24 cm with the real wingspan, which results in a real wingspan of 62.4 m.

Sunita's scale model of an aeroplane has a wingspan of 24 cm, and the scale used is 5 cm to 13 m. To find the wingspan of the real aeroplane, we set up a proportion where 5 cm on the model represents 13 m in reality. The ratio would be:

Model scale: 5 cm

Real scale: 13 m = 1300 cm (since 1 m = 100 cm)

Now we find the corresponding real-life measurement for the 24 cm wingspan on the model:

(5 cm / 1300 cm) = (24 cm / Wingspan in cm)

To solve for the real wingspan, we cross-multiply and divide:

5 cm * Wingspan in cm = 1300 cm * 24 cm

Wingspan in cm = (1300 cm * 24 cm) / 5 cm

Wingspan in cm = 31,200 cm / 5 cm

Wingspan in cm = 6,240 cm

Converting back to meters (divide by 100 since 1 m = 100 cm):

Wingspan in m = 6,240 cm / 100 = 62.4 m

Answer:

2,236 square inches

Step-by-step explanation:

A=86*52/2=2,236 square inches

The area of triangle PQR which has a base of 86 inches and a height of 52 inches is 2,236 square inches.

The area of the triangle is the space occupied by it on the two-dimensional plane. The area of the triangle is half of the product of its base and height.

[tex]A=\dfrac{1}{2}bh[/tex]

Here, (b) is the base of the triangle and (h) is the height.

Triangle PQR has

Put these values in the above formula to find the area of the triangle PQR as,

[tex]A=\dfrac{1}{2}(86\times52)\\A=2236\rm\; in^2[/tex]

Hence, the area of triangle PQR which has a base of 86 inches and a height of 52 inches is 2,236 square inches.

Learn more about the triangle here;

https://brainly.com/question/17264112

Answer:

48

Step-by-step explanation:

16*3

16 oz in a pound

Answer is 6/25

because you have to add all the marbles wich will be:

four yellow marbles, six red marbles, five blue marbles, six white marbles, six white marbles

4 + 6 + 5 + 6 + 4 = 25

so there is 6 white marbles and a total of 25 marbles so it will be 6/25

have a nice day!

also can you please give me brainliest :)

Answer:

B (second option)

Step-by-step  step 2, the LCD was not used correctly to make equivalent fractions.

Answer:

the answer is b

Step-by-step explanation:

got it right

Answer:

1.5

Step-by-step explanation:

Answer:

18 Cubic cm

Step-by-step explanation:

Count all of the squares granted one cube = 1 cm^3, there are 18 cubes so it would be 18cm^3

Answer:

Using a system of equations, however, allows me to use two different variables for the two different unknowns.

number of adults: a

number of children: c

With these variables, I can create equations for the totals they've given me:

total number: a + c = 2200

total income: 4a + 1.5c = 5050

Now I can solve the system for the number of adults and the number of children. I will solve the first equation for one of the variables, and then substitute the result into the other equation:

a = 2200 – c

4(2200 – c) + 1.5c = 5050

8800 – 4c + 1.5c = 5050

8800 – 2.5c = 5050

–2.5c = –3750

c = 1500

Now I can back-solve for the value of the other variable:

a = 2200 – (1500) = 700

I have values for my two variables. I can look back at my definitions for the variables to interpret these values. To answer the original question, there were:

1500 children and 700 adults.

Final answer:

A word problem involving two people and their apples, where Alice has twice as many apples as Bob. The variables are defined, the equation is written, and the solution is found.

Explanation:

Word Problem:

Alice has twice as many apples as Bob. Together, they have 15 apples. Define the variable 'x' as the number of apples Bob has.

Equation:

Alice's apples: 2x

Bob's apples: x

2x + x = 15

Solution:

Combining like terms: 3x = 15

Dividing both sides by 3: x = 5

Sentence Explanation:

We defined the variable 'x' as the number of apples Bob has. Since Alice has twice as many apples, we expressed her number of apples as 2x. The total number of apples they have together is 15, so we created an equation by summing up both Alice's and Bob's apples. By solving for 'x', we found that Bob has 5 apples.

Answer:

x=236 feet

Step-by-step explanation:

Answer:

it's geometric

Step-by-step explanation:

geometric equations change by a rate witch means you multiply to get to the next number in the sequence

arithmetic you add to get to the next number in the sequence

Answer:

Geometric

$335,544.31

Step-by-step explanation:

1, 2, 4, ..

This is Geometric progression with:

First term: 1

Common ratio: 4/2 = 2

S25 = 1(2²⁵-1)/(2-1) = 33,554,431

33,554,431 pennies or

33,554,431/100 = $335544.31

The probability of exactly 1 person favoring the new building project out of 3 people chosen at random is approximately 0.4083, or 40.83%.

Use the concept of probability defined as:

Probability is the ratio of the number of favorable outcomes to the total number of outcomes for the occurrence of an event.

Given that,

A poll was conducted on a new building project.

The results of the poll represent 45% of the respondents were in favor of the new building project.

To calculate the probability that exactly 1 person favoring the new building project out of 3 people chosen at random:

Use the binomial probability formula:

[tex]P(X=k) = (^nC_k) p^k (1-p)^{(n-k)}[/tex]

Where P(X=k) is the probability of getting exactly k favorable responses, and n is the total number of people chosen.

In this case, n = 2,

k is the number of favorable responses, in this case, 1,

p is the probability of an individual favoring the new building project in this case, 0.45,

And (1-p) is the probability of an individual not favoring the new building project in this case, 0.55.

Now substitute the values into the formula:

[tex]P(X=1) = (^3C_1) (0.45^1) (0.55^{(3-1)})[/tex]

Calculating the values:

[tex]^3C_1 = 3[/tex]

(which represents the number of ways to choose 1 favorable response out of 3 people),

[tex]0.55^{(3-1)} = 0.3025.[/tex]

Substituting these values back into the formula:

P(X=1) = (3)(0.45)(0.3025)

Calculating further:

P(X=1) = 0.4083

Hence,

The probability of exactly 1 person favoring the new building project out of 3 people chosen at random is approximately 0.4083, or 40.83%.

Learn more about the probability visit:

https://brainly.com/question/13604758

#SPJ12

Final answer:

The probability of exactly 1 out of 3 individuals favoring a new building project is 40.35%.

Explanation:

The probability of a person favoring a new building project is 45%.

To find the probability that exactly 1 out of 3 chosen individuals favor the project, we use the binomial probability formula:

Calculate the probability of 1 person favoring the project: 0.45 * 0.55 * 0.55 = 0.1345

Calculate the number of ways 1 person can be chosen out of 3: 3 choose 1 = 3

Multiply the two results: 3 * 0.1345 = 0.4035

Therefore, the probability that exactly 1 out of 3 individuals favor the new building project is 0.4035 or 40.35%.

Answer:

There were 20 questions on the quiz

Step-by-step explanation:

In this question, we are concerned with knowing the number of questions on a quiz, given that Deana had a certain percentage after scoring an amount of marks.

We proceed as follows;

Let the number of questions on the quiz be X.

Now, she got 85% by making 3 incorrect choices. This means the percentage of questions she got incorrectly would be 100-85 = 15%

what we are saying is that it is just 15% of her questions that were wrong.

This mathematically;

15% of x = 3

15/100 * x = 3

15x = 3 * 100

15x = 300

x = 300/15

x = 20

Answer:

416 square yards

Step-by-step explanation:

The formula for the surface area of the 2 bases is just b*h

12*8=96 yd²

Finding the lateral area:

(10*10)+(10*10)+(12*10)=

100+100+120=

320 yd²

Add the lateral surface area and the surface area of the 2 bases for the total surface area:

320+96=416 yd²

Answer:

59%

Step-by-step explanation:

The information from Satellite Company Y is:

65 people watch live and 94 people watch recorded.

The total number of people from Y is:

65 + 94 = 159

So the probability that a random person from Y watches recorded shows more often is given by the division of the number of people watching more recorded shows (94) over the total number of people (159):

Probability = 94 / 159 = 0.5912 = 59.12%

Rounding to nearest whole percent, we have 59%

Answer:

59%

Step-by-step explanation:

I got 100%

Answer:

10 inches

Step-by-step explanation:

Assuming a rectangular tile

P = 2(l+w) where l is the length and w is the width

P = 2(1+4)

   = 2(5)

   = 10 inches

Answer:

10 in

Step-by-step explanation: