If the volume is 7 and the density is 1.420 what's thr mass

Answer:

270 miles

Step-by-step explanation:

If she drove 120 miles in 2 hours, that means she drives at 60 miles per hour. 4 hours and 30 minutes can be seen as 4.5, since 30 minutes is half an hour. So then you multiply 60 by 4.5 and get 270.

Answer:

28 hours for 7 days

Step-by-step explanation:

8/2 =

4

4 hours for 1 day

1 x 7 =

7

7 x 4

28

28 for 7 days

Answer:

I would say the answer is 28

Step-by-step explanation:

In two days, you would work 8 hours. To make sense, in one day you would work 4 hours.

Mulitply 4*7

or

2 days: 8 hrs

4 days: 16 hrs

6 days: 24 hrs

7 days: 28hrs

He will reach the dance before time if he leaves at 16:40.

The formula for speed is speed = distance ÷ time.

To work out what the units are for speed, you need to know the units for distance and time. In this example, distance is in metres (m) and time is in seconds (s), so the units will be in metres per second (m/s).

Given distance= 120 Km, speed= 100 km/h

For this speed,

time= distance/ speed

       = 120/100

        = 1.2 hours

If the guest leave at 4:40 p.m. then by the speed of 100 km/h he will reach the venue at 06:00 p.m.

Hence, he will reach before the time at wedding.

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Answer:

y=2(x-2) +2

Step-by-step explanation:

Step-by-step explanation:

mean =10

sum of no =7+5+0+1+3+4+h=20+h

N=7

now

mean=sum of no/N

10=20+h/7

10×7=20+h

70-20=h

h=50

Answer:

1) x² + x

2) Check Below.

Explanation:

Hence sequence can be created:

2, 6, 12

Find difference:

2, 6, 12

 4   6

    2

Find Equation:

Then,

Then,

So Equation:

With Step Increasing, The step number multiplies the step number and plus the step number. That is the number of squares.

Answer:

I think the full amount was $a18.50

The original air present after 8 breaths will be equal to 179.81 ml.

The equation in mathematics is the relationship between the variables and the number and establishes the relationship between the two or more variables.

It is given in the question that:-

During normal breathing, about 12% of the air in the lungs is replaced after one breath

If the initial amount of air in the lungs is 500 mL

how much of the original air is present after 8 breaths?

The calculation for the eduction of the air will be done by the following equation:-

[tex]\rm =Volume \ present\times (0.88)^n\\\\\\= 500\times (0.88)^8[/tex]

=179.88 ml

Hence original air present after 8 breaths will be equal to 179.81 ml.

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Answer:

Step-by-step explanation:

The vertical asymptotes is the value of x for which the function does not exist. The function does not exist at the point where x -5 =0
x = 5 is therefore an asymptotes

The y-intercept is the coordinate point where x = 0. For the log function;

f(x) = log(x - 5)

If y = 0

0 = log(x-5)

x - 5 = 10^0
x - 5 = 1

x = 6

Hence the x-intercept is at (6, 0)

The vertical asymptotes is the value of x for which the function does not exist. The function does not exist at the point where x -5 =0
x = 5 is therefore an asymptotes

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Answer:

Mean: 80

Mode: 81

Median:81

Step-by-step explanation:

First, let's get the set of numbers from this Stem-and-Leaf plot:

[60,61,73,75,79,81,81,81,92,96,98]. From here we can solve for the mean by adding all the numbers up and dividing it by the number of terms that we have: [tex]\frac{60+61+73+75+79+81+81+81+92+96+98}{11} = 80[/tex] when rounded to the nearest whole number. The median is the middle number of the set when arranged from least to greatest, in this case, the median is 81.

Hope this helps! :)

Answer:

8 cm

Step-by-step explanation:

To find the length of the rectangle's base, form 2 equations using the given information.

Perimeter of rectangle= 2(height +base)

Let the lengths of the height and base of the rectangle be h and b cm respectively.

Perimeter= 80

2(h +b)= 80

h +b= 80 ÷2

h +b= 40 -----(1)

h= 4b -----(2)

Let's solve by substitution!

Substitute (2) into (1):

4b +b= 40

5b= 40

b= 40 ÷5

b= 8

Thus, the length of its base is 8 cm.

The surface area of the given rectangular prism is:

S = 496 square feet.

For a rectangular prism of length L, width W, and height H is:

S = 2*(L*W + W*H + L*H).

In this particular case, we have:

If we replace that in the surface area equation, we will get:

[tex]S = 2*(5ft*16ft + 5ft*8ft + 16ft*8ft) = 496 ft^2[/tex]

The surface area of the rectangular prism is 496 square feet.

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Perimeter of larger sail

Now

Let shorter sail's Perimeter be x

#2

Let they be 2x and 7x

Smaller angle

[tex]\bf Blue \ Color \ Line : y = x^2[/tex]

When added all together:

[tex]\bf Black \ color \ Line: y=-\left(x+2\right)^{2}-10[/tex]    =  Final answer.

Step-by-step explanation:

-3m > 75

3m < -75

m < -25

that's it.

Answer:

m< - 25

Step-by-step explanation:

-3m > 75  

(-3m)/(-3) <75/(-3) (divide both members by (-3) (which is a negative number so  ">" becames "<")

m<-25

Answer:

5.1  6.2

Step-by-step explanation:

5.y2-y1/x2-x1
  7-4/6-1=1
6.y2-y1/x2-x1
  -4+6/-1+2=2

Answer:

Step-by-step explanation:

Perpendicular lines will have negative inverse slopes of each other. In this case, the slope of the known line is -8. The negative of -8 or -(-8) is just +8. The inverse of +8 is +1/8.

Now we know the slope of the line perpendicular to y=-8x+2 and we are given the point (-4,1).

All linear lines have the form of y=mx+b and we know the slope.

y=1/8x+b

We plug in (-4,1) into the equation:

1=1/8 * -4 +

1=-1/2+b

b=3/2

We now have the b constant and can simply just write the equation:

y=1/8x+3/2

Answer:

=-8x+2

Step-by-step explanation:

step by step explanation

Answer:

let X be the number of ways they can be seated without condition,

let M the the number of ways they can be seated if the two people must sit together,

let N be the number of ways they can be seated if the two must not sit together.

X=7! =5040

M= 6!× 2!=1440

M+N=X

then N=X–M=5040–1440=3600ways

The slope of the line which is represented by the provided equation 4x-y+3=0 is the number 4.

The slope of a line is the difference in the height of the y coordinates and the difference in the width of the coordinates. It describes the direction of the line.

The standard form of the equation of a line can be given as,

y=mx+c

Here, c is the y intercept of the line and m is the slope of the line.

The equation of the line is given as,

4x-y+3=0

Rewrite the equation in the standard form as,

4x-y+3=0

4x+3=y

y=4x+3

Compare it with standard equation we get,

m=4

c=3

Thus, the slope of the line which is represented by the provided equation 4x-y+3=0 is the number 4.

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The solution to the question is arrived at using the knowledge of mathematical models.

A mathematical model is a linguistic and mathematical concepts-based description of a system.

The appropriate model for the given data is:

Because there are discrepancies and no direct equation that can complete all of these points, a Least Square Regression Line is the best option for resolving this problem.

They could be outliers, so we need use a calculator to create a regression line to find the residual value.

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the answer is 48 square 72

Step-by-step explanation:

72+46=48square and 48square x 0

The key to this problem is to identify the functions; isolate the functions dependent on only x; and define each function in terms of x. Once every function is in terms of x then we can apply them to the equation that needs to be solved. Identify the functions: Here we are given four functions f(x); g(x); h(x); and i(x) so anytime we see these letters appear in an equation is where we would substitute the function. Isolate the functions dependent on only x: At a glance we can tell that only g(x) is purely in terms of x, every other function contains another function within their equations.

Define each function in terms of x: Since g(x) is in terms of x and i(x) contains g(x) then we can substitute 3x+4 for g(x) making i(x)=(x-2)*(3x+4) which then simplifies to i(x)=3x2-2x-8

Since h(x) contains i(x) then we can substitute the i(x) we made in 3a to get h(x)=3x2-11-(3x2-2x-8) which then simplifies to h(x)=2x-3

Since f(x) contains g(x) and h(x) then we can substitute those equations to get f(x)=2(3x+4)-(2x-3) which then simplifies to f(x)=4x+11

Now we apply our defined equations to the equation in question. There are two ways to do this, we can either apply our x values to each individual equation first or make the equation in question in terms of x. In this case I will make the equation in terms of x first. The first part of this process is understanding that the ° symbol does not represent degrees in this case, it represents the substitution of a function into another function. For example, if you saw (f°g)(x) then you would take the equation for g(x) and substitute it for every x value in the f(x) equation. Based on the process around ° it would be best to start from i(x) and work backwards to f(x) then h(x). So 2i=2(i(x))=2(3x2-2x-8)=6x2-4x-16       Ignoring the 3 we then evaluate f°2i=f(2(i(x)))=4(6x2-4x-16)+11=24x2-16x-64. Then we multiply the 3 to get 3f°2i=3(24x2-16x-64)=72x2-48x-192

Then we get to h°3f°2i=2(72x2-48x-192)-3=144x2-96x-384 which can simplify to 48(3x2-2x-8) or 48(3x+4)(x-2).

Finally we can divide g(x) making (h°3f°2i÷g)(x)=(48(3x+4)(x-2))/(3x+4)=48(x-2)

With the final equation in terms of only x we can finally solve by substituting each x value, giving us -288 when x=-4; -240 when x=-3; and 0 when x=2.

Answer:

46 hours do the students play video games per week

The area of the figure is the amount of space on it, and the calculated area is 48.6 square feet

The figure is a triangle with the following parameters:

Base = 20

Height = 4.86

The area of a triangle is:

Area = 0.5 * Base * Height

So, we have:

Area = 0.5 * 20 * 4.86

Evaluate

Area = 48.6

Hence, the calculated area is 48.6 square feet

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[tex](a+4)^2 -11(a+4) -42\\\\=x^2 -11x -42~~~~~~~~~~~~~~~~~~~~~~~~;[a+4 = x]\\\\=x^2 -14x +3x -42\\\\=x(x-14) +3(x-14)\\\\=(x+3)(x-14)\\\\=(a+4+3)(a+4-14)~~~~~~~~~~~~;[\text{Substitute back}~ a+4 =x]\\\\=(a+7)(a-10)[/tex]

Answer:

(a - 10) (a + 7)

Step-by-step explanation:

⠀

⠀

(a + 4)² - 11(a + 4) - 42

Fractorize

⠀

⠀

⠀

⠀

So the equation will be

⠀

[tex] \sf \large {x}^{2} - 11x - 42[/tex]

⠀

⠀

⠀

[tex] \sf {x}^{2} - 14x + 3x - 42[/tex]

⠀

⠀

⠀

[tex] \sf x(x - 14) + 3(x - 14)[/tex]

⠀

[tex] \sf (x - 14)(x + 3)[/tex]

⠀

⠀

⠀

[tex] \sf (a + 4 - 14)(a + 4 + 3) \\ \\ \boxed{ \frak{(a - 10)(a + 7)} } [/tex]

⠀

Answer:

sum of terms: 55550

Explanation:

[tex]\sf S_n = \dfrac{n}{2} (u_{start}+u_{end}})[/tex]

Here the number of terms:

1100 ÷ 11 = 100

Using the Formula:

[tex]\sf \dfrac{100}{2} (11+1100)[/tex]

[tex]\sf 55550[/tex]

8.31 8.3 8.296 8.06

youre welcome

The correct order from greatest to least is: 8.31, 8.3, 8.296, 8.06.

let's order the decimals from greatest to least:

1. 8.31

2. 8.3

3. 8.296

4. 8.06

So, the correct order from greatest to least is: 8.31, 8.3, 8.296, 8.06.

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Answer:

36 units

Step-by-step explanation:

Using the coordinates, you can find the length of each leg of the triangle.

Find the distance between the x-coordinates, 2 and 11 by subtracting.

11 - 2 = 9.

Find the distance between the y-coordinates, 7 and -5 by subtracting.

7 - (-5)

7 + 5 = 12

The two legs of the right triangle are 9 and 12.

Use the pythagorean theorom to find the hypotenuse.

[tex]a^{2} +b^{2} =c^{2} \\9^{2} +12x^{2} =c^{2} \\81 + 144 = c^{2} \\225 = c^{2} \\\sqrt{225}=\sqrt{c^{2} } \\c = 15[/tex]

The three sides of the triangle are 9, 12, and 15. To find the perimeter, add the sides together.

9 + 12 + 15 = 36