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3 years ago

How many miles students ran 6 or more miles?

Mathematics

2 answers:

krek1111 [17]3 years ago

7 0

Answer: dude it is 7 and 3.4

Step-by-step explanation:

Nastasia [14]3 years ago

5 0

Based on the key the number under the stem column is a whole number mile and the number under the leaf column is a decimal ( partial mile)
so for students that ran more than 6 miles, count the numbers under the leaf that are next to 6 or higher
, there is 3 next to 6, 2 next to 7 and 2 next to 8
so there were 3 +2 +2 = 7 students that ran more than 6 miles
shortest run: 4.3

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Plzzzz help with atleast 1question❤️

velikii [3]

Answer:

4) 3, -2, -8

5) -7

6) E

7) D

8) 5, -1, 34

Step-by-step explanation:

4) There are at least two prominent points on line EF: (0, -4) and (6, 5). From there, we can find the slope-intercept formula of it.

The slope: (5 + 4) / (6 - 0) = 9 / 6 = 3 / 2

The intercept: (0, -4)

So, we have y = 3/2x - 4.

-3/2x + y + 4 = 0

Multiply every term by 2.

-3x + 2y + 8 = 0.

But the question asks for A to be >0! Multiply everything by -1.

3x - 2y - 8 = 0

So, the values of A, B, and C, respectively, are 3, -2, -8.

5) There are at least two prominent points on line GH: (-9, 4) and (-1, 2). From there, we have...

The slope: (4 - 2) / (-9 + 1) = 2 / -8 = -1/4

y = -1/4x + b

2 = (-1/4 * -1) + b

2 = (1/4) + b

b = 1.75; or 1 and 3/4; or 7/4.

Then, we have our intercept: 7/4.

We have an equation in slope-intercept form: y = -1/4x + 7/4

1/4x + y - 7/4 = 0

Multiply everything by 4.

x + 4y - 7 = 0.

The value of C is -7.

6) Lines that are parallel to the y-axis are vertical lines, which means that the x-values never change. We are looking for an equation where x = 3. That is code letter E.

7) Lines perpendicular to the y-axis are horizontal lines, which means that the y-values never change. We are looking for an equation where y = -5. That is code letter D (y + 5 = 0; y = -5).

8) A line parallel to 5x - 8y + 12 = 0 would have the same slope as it.

5x - 8y + 12 = 0

-8y = -5x - 12

y = 5/8x + 3/2

So, the line should have a slope of 5/8.

3 = (5/8) * (-2) + b

3 = -10/8 + b

3 = -5/4 + b

b = 3 + 5/4

b = 4 and 1/4; 17/4.

y = 5/8x + 17/4

-5/8x + y - 17/4 = 0

Multiply all terms by 8.

-5x + y - 34 = 0

Multiply all terms by -1.

5x - y + 34 = 0.

The values of A, B, and C, respectively, are 5, -1, 34.

I REALLY hope this helps because my brain kinda hurts now XD Have a great day!

3 0

3 years ago

In ΔUVW, the measure of ∠W=90°, UV = 4.1 feet, and VW = 1.9 feet. Find the measure of ∠V to the nearest tenth of a degree.

Lynna [10]

Answer:

Measure of angle V = 62.4°.

Step-by-step explanation:

Given information : In ΔUVW, m∠W=90°, UV = 4.1 feet, and VW = 1.9 feet.

We need to find the measure of ∠V to the nearest tenth of a degree.

In a right angled triangle

$\cos \theta = \dfrac{adjacent}{hypotenuse}$

Since m∠W=90°, so ΔUVW is a right angle triangle.

$\cos (\angle V) = \dfrac{VW}{UV}$

$\cos (\angle V) = \dfrac{1.9}{4.1}$

Taking cos inverse on both sides.

$\angle V= \cos ^{-1}(\dfrac{1.9}{4.1})$

$\angle V=62.39233194$

$\angle V\approx 62.4$

Therefore, the measure of angle V is 62.4°.

7 0

3 years ago

Please help and please give explanation

Yuki888 [10]

Answer:

cylinder surface area = 201.06in²

surface area of cone = 56.56in.²

Step-by-step explanation:

cylinder surface area formula = 2πrh + 2πr²

refer the pic

cone surface area formula = πr ( r + √h² + r² )

refer the sec pic

surface area of the solid

= ( 201.06 + 56.56 ) in.²

= 257.62in.²

= 258in.²

4 0

3 years ago

- 9.37 as a mixed number in simplest form

Step2247 [10]

- 9.37 = <span>- 9 37/100

hope it helps</span>

7 0

3 years ago

Help finding the volume

Snowcat [4.5K]

Answer:

Using $\pi =3.14$ the volume of the cylinder is $1471.875\ m^{3}$

Step-by-step explanation:

We are using $\pi =3.14$ .

We know that volume of a cylinder is $\pi (r)^2h$

For this we have

Height of the cylinder is given that is $18.75\ m$

And the radius of the cylinder is unknown,

But there is a hint in which we can see that the diagonal,height and diameter forms a right angled triangle (or a cone).

Where $21.25\ m$ is the hypotenuse.

Using Pythagoras formula.

$(Hypotenuse)^2=(base)^2+(perpendicular)^2$

We can find the value of diameter which is the base over here.

So,

$d=\sqrt{(21.25)^2-(18.75)^2}=\sqrt{(451.56-351.56)}=\sqrt{(100)}=10\ m$

Then radius $\frac{diameter}{2} =\frac{10}{2}=5\ m$

Now using the above values and plugging it on to the formula.

Volume $=\pi (r)^2h=(3.14)(5)^2\times 18.75=1471.875\ m^3$

So the volume of the cylinder is $1471.875\ m^3$

5 0

3 years ago