During a ten-minute science experiment, the temperature of a substance decreases at a constant rate. ​Which graph represents this situation? A.B.C

Answer: 21/36

Step-by-step explanation:

I added both of the numbers together (15+21) and I got 36 so I just put 21 over 36. So the percentage of it is either 58% or 58.3% !

Hope it helped ;>

Answer:

0.58

Step-by-step explanation:

15 + 21 = 36

21 / 36 = 0.58

0.58

NOW SOMETIMES SOME SCHOOLWORK WILL WANT IT HAS A HIGHER DECIMAL IT DEPENDS ON UR SCHOOL SO IF 0.58 DOES END UP BEING WRONG (which is unlikely because most schools would want it this way) THEN I WOULD DO 58.33

ok have a wonderful rest of ur day :)

Answer:

You are correct if rounding to the nearest whole number.

I got 12.69 so if you round up, you will get 13 (see below)

Step-by-step explanation:

X*Y = 288

(X-a)*(Y-a) = 10 * 8 = 80

X-a = 10

Y-a = 8

a = Y-8 = X-10

(X-10) * X = 288

X^2 - 10X = 288

X^2-10X-288= 0

quadratic equation

[tex]X = \frac{10 +/- \sqrt{100 - (4)(-288)} }{2}[/tex]

X =              (10 + 35.38)/2 =22.69 (technically it would have 2 answers, but we only want to evaluate the positive answer)

a = X- 10 = 22.69- 10 = 12.69 which would round up to 13 if you are rounding to the nearest whole number.

HOPE THIS HELPS!!!

Answer:

21

Step-by-step explanation:

yeah 2+2 is 21 thanks for the very nonexistent question

Answer:

D. 4

Explanation:

I took the test and got this question correct!

Answer:

Step-by-step explanation:

The monthly interest rate is the annual rate (APR) divided by 12.

  19%/12 ≈ 1.5833%

The loan will be paid in fewer than 91 months, because Zach will be paying at least $10 per month on his current balance of $910. The attached spreadsheet shows it will take 73 payments to pay off the loan.

Answer:

Step-by-step explanation:

So in our case, let assume 'x' as a common factor.

Thus,

4x + 5x + 7x = 5600;

16x = 5600;

x = 5600/16 = 350.

So,

4x= 350*4 =1400;

5x= 350*5 = 1750; &

7x= 350*7 = 2450.

Your answer is, 5600 = 1400+1750+2450 which is in ratio of 4:5:7.

Answer:

3.33

Step-by-step explanation:

Answer:

36.0

Step-by-step explanation:

45 / 10 = 4.5

8 * 4.5 = 36

Answer:

21x2(x-3)

Step-by-step explanation:

Answer: Its C- 3(7x^2+5)(x-3)

Step-by-step explanation:

took it on edge2022

Answer:

127 degrees

Step-by-step explanation:

to get the equation of any straight line we simply need two points off of it, from the table [tex]\begin{array}{|cccc|ll} \cline{1-4} x&\frac{1}{2}&0&2\\ \cline{1-4} y&4&0&16\\ \cline{1-4} \end{array}[/tex] let's use the points of (0 , 0) and (2 , 16)

[tex](\stackrel{x_1}{0}~,~\stackrel{y_1}{0})\qquad (\stackrel{x_2}{2}~,~\stackrel{y_2}{16}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{16}-\stackrel{y1}{0}}}{\underset{run} {\underset{x_2}{2}-\underset{x_1}{0}}}\implies \cfrac{16}{2}\implies 8 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{0}=\stackrel{m}{8}(x-\stackrel{x_1}{0})\implies y=8x[/tex]

Answer:

the top one

Step-by-step explanation:

it has the least number

Answer:

A

Step-by-step explanation: i got it right

Step-by-step explanation:

the standard form for a quadratic function is

y = ax² + bx + c

our parabola had the equation

y = a(x - 2)² + q

let's do the "math" :

y = a(x² - 4x + 4) + q = ax² - 4ax + 4a + q

so, we know (when comparing with the standard form)

b = -4a

c = 4a + q

for the vertex we need to find the axis of symmetry first by using the standard formula

x = -b/2a

which is in our case

x = -(-4a)/2a = 4a/2a = 2

to get y for this x we need to find a and q first.

we are using the given points for that :

5 = a(-2)² - 4a×(-2) + 4a + q

-1 = a(4)² - 4a×4 + 4a + q

the first equation then forms into

5 = 4a + 8a + 4a + q = 16a + q

the second equation forms into

-1 = 16a - 16a + 4a + q = 4a + q

let's subtract the second from the first equation

5 = 16a + q

- -1 = 4a + q

--------------------

6 = 12a + 0

12a = 6

a = 1/2

-1 = 4a + q = 4×1/2 + q = 2 + q

q = -3

so, the original equation for our parabola is

y = 1/2 × (x - 2)² - 3

so y for the vertex (remember, x = 2) is

y = 1/2 × (2 - 2)² - 3 = 1/2 × 0 - 3 = -3

so the vertex is (2, -3)

She needs to buy 6 bags of soil. the correct option is B

Given

Caisha has a circular garden with a radius of 4 ft.

She needs to put a layer of soil on top. e

Each bag of soil covers 9.42 square feet.

The radius of the circular garden is equal to the pie times of the square of the radius.

The radius of the circular garden is;

[tex]\rm Area = \pi r^2\\\\Area = 3.14 \times (4)^2\\\\ Area = 3.14\times 16\\\\Area =50.24[/tex]

Therefore,

The number of bags of soil will she need to buy is;

[tex]\rm = \dfrac{Area }{Soil \ covers}\\\\= \dfrac{50.24}{9.42}\\\\= 5.33\\\\= 6 \ bags \ apporx[/tex]

Hence, she needs to buy 6 bags of soil.

To know more about the area click the link given below.

https://brainly.com/question/11541452

Answer: C

Step-by-step explanation:

Answer:

1.5 Liters

Step-by-step explanation:

500ml=0.5L

(0.5L)x3= 1.5L

This equation represents exponential decay. Whenever the base is less than 1, the function represents decay. When the base is greater than 1, the function represents growth. In this case, the base is .59 which is less than 1, representing decay.

Answer:

He bought 4 DVDs for $9.95 each, so $9.95*4=  $39.8 is his total cost.

Step-by-step explanation:

Answer:

70

Step-by-step explanation:

Answer:

Step-by-step explanation:

Plugin x = 4 in the expression

5*(2x + 6 ) = 5*(2*4 + 6)

                 = 5* (8 + 6)

                 = 5 * 14

                  = 70

In this exercise we have to use the formula for volume of the cube and we find that:

Volume of cube is 1000m³

The formula is V = c * l * a, where:

Given that the length of side of cube = 10m, and knowing the formula the volume of cube is:

[tex]Volume of cube = (side)^3\\Volume of cube= (10)^3\\Volume of cube = 1000 m^3[/tex]

See more about volume at brainly.com/question/1578538

»Option (A.)

Let find

5b^{0}

= 1

hope its helps

Okay

E( _15_, _5_ )

F(_15_, _10_)

G(_15_, _10_)

H(_5_, _15_)

I'm not really sure if those are the right answers, but from what I was taught in school, I think so.

Answer:

It says it right there.

the answer that you need is 300

Step-by-step explanation:

Brainiest

Answer:

The height of the square pyramid is 150 inches

Step-by-step explanation:

[tex]volume \ of \ square \ pyramid = a^2 \frac{h}{3}[/tex]

[tex]450 = 3^2 \frac{h}{3}[/tex]

[tex]450 = 9( \frac{h}{3} )[/tex]

[tex]450 = 3( {h}{)[/tex]

[tex]450 = 3h[/tex]

[tex]h = 150[/tex]

Answer:

The answer is D because if you go at a constant speed of 50 MPH for 4 hours you will have reached 200-mile mark at 4 hours

Step-by-step explanation:

Answer:

D

Step-by-step explanation:

50mph

I think it's A if I'm wrong someone correct me have a great day!!

y=1/2+4

y=2+4

y=6

or

y=1/2+4

y=1/6

y=6

Those homeworks are so easy lmaøoo

Answer:

To graph the equation of a line written in slope-intercept (y=mx+b) form, start by plotting the y-intercept, which is the b value. The y-intercept is where the line will cross the y-axis, so count up or down on the y-axis the number of units indicated by the b value. From the y-intercept point, use the slope to find a second point. The numerator of the slope tells you how many units to move up or down from the intercept, and the denominator of the slope tells you how many units to move left or right in order to plot the second point. Connect the two points and draw arrows at either end to indicate that the line extends infinitely.

Step-by-step explanation:

Since the equation is in y=mx+B form, M is the value of we can use B as the Y_Intercept and M as the slope.

#LearningIsFun

Answer:

Tom's speed (in mph) on Monday [tex]=4mph[/tex]

Tom's speed (in mph) on Tuesday [tex]=3mph[/tex]

Step-by-step explanation:

Using Speed distance time formula.

Tom's speed (in mph) on Monday

[tex]=Distance/time.[/tex]

[tex]=1/(15/60).[/tex] [By question statements, [tex]1hr=60min].[/tex]

[tex]=4mph[/tex]

Tom's speed (in mph) on Tuesday

[tex]=Distance/time.\\ =1/(20/60).[/tex][By question statements, [tex]1hr=60min].[/tex]

[tex]=3mph.[/tex]

Hence

Tom's speed (in mph) on Monday[tex]=4mph.[/tex]

Tom's speed (in mph) on Tuesday[tex]=3mph.[/tex]

I hope this helps you

:)

On Monday, The speed of Tom will be 4 mph.

On Tuesday, The speed of Tom will be 3 mph.

What is an expression?

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

On Monday Tom takes 15 minutes to walk one mile to school.

On Tuesday he takes 20 minutes to walk the same distance.

Now,

For Monday;

Tom takes 15 minutes to walk one mile to school.

Hence, Distance = 1 mile

Time = 15 minutes = 15/60 hour

Thus, Speed = Distance / Time

                    = 1 / (15/60)

                    = 60/15

                    = 4 mph

For Tuesday;

Tom takes 20 minutes to walk one mile to school.

Hence, Distance = 1 mile

Time = 20 minutes = 20/60 hour

Thus, Speed = Distance / Time

                    = 1 / (20/60)

                    = 60/20

                    = 3 mph

Thus, On Monday, The speed of Tom will be 4 mph.

On Tuesday, The speed of Tom will be 3 mph.

Learn more about the speed visit:

https://brainly.com/question/13943409

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