Pls solve 3c for me.will mark branliest a

.

Answer:

40.5

Step-by-step explanation:

(n-2)*180

(7-2)*180=5*180=900

10p+135+149+121+90=900

10p=-495+900=405

p=40.5

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:

I think the full amount was $a18.50

[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.

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

Perimeter of larger sail

Now

Let shorter sail's Perimeter be x

#2

Let they be 2x and 7x

Smaller angle

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:

Answer:

46 hours do the students play video games per week

Answer:

Put all terms to the side of the equals side, and make sure there are none on the other side. That would be unbalanced if there were terms on the opposite side.

Factor out the problem.

Set each factor of the problem equal to zero.

Solve each new equation.

Check to see if it makes sense by putting your new equation into the original equation.

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:

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.

Answer:

a. 29.05 b. 29.05 c. 29.5

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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[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:

600 + 161 = 761

Step-by-step explanation:

599 + 162 = 600 + 161 = 761

Answer:

D. 128

Step-by-step explanation:

16 out of 25 is a 64% ratio.

Easy way to get that is there is 4 25s in 100. So do 16x4 and that's 64.

Now there is 2 100s in 200. We want out of 100 so we half it. 64 and 100.

Knowing this the answer is D. 128.

Hope this helps. Brainliest would be appreciated.

Answer:

D. 128

Step-by-step explanation:

[tex]\frac{16}{25} =\frac{x}{200}[/tex]

cross multiply:

[tex]25x = 3200[/tex]

divide both sides by 25:

x = 128

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]

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.

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 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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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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the answer is 48 square 72

Step-by-step explanation:

72+46=48square and 48square x 0

Answer:

See below for proof of identity.

Step-by-step explanation:

Since both terms of [tex]\sin^3\theta+\cos^3\theta[/tex] are perfect cubes, we can use the formula [tex]a^3+b^3=(a+b)(a^2-ab+b^2)[/tex] where [tex]a=\sin\theta[/tex] and [tex]b=\cos\theta[/tex]:

[tex]\displaystyle \frac{\sin^3\theta+\cos^3\theta}{\sin\theta+\cos\theta}\\\\\frac{(\sin\theta+\cos\theta)(\sin^2\theta-\sin\theta\cos\theta+\cos^2\theta)}{\sin\theta+\cos\theta}\\ \\\frac{(\sin\theta+\cos\theta)(1-\sin\theta\cos\theta)}{\sin\theta+\cos\theta}\\\\1-\sin\theta\cos\theta[/tex]

Thus, the identity is proven.

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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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

Answer:

c

Step-by-step explanation:

The multiplicative inverse of number 0 does not exist.

When taking the multiplicative inverse of 0, we get :

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

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