The time it takes to travel to a destination varies inversely with the average speed. It takes two hours when the average speed is 40mph. If the average speed changes to 80mph, what is the new travel time?

Answer:

15.70

Step-by-step explanation:

2×3.14×10(90÷360)=15.70

The length of the arc is 15,7 km

Form :

[tex] =2 \times \pi \times {r} \times \frac{ \alpha \degree}{360 \degree} \\ [/tex]

.

Solve :

[tex] = 2 \times \pi \times r \times \frac{ \alpha \degree}{360 \degree} \\ [/tex]

[tex] = 2 \times 3.14 \times 10 \times \frac{90}{360} \\ [/tex]

[tex] = 2 \times 31.4 \times 1 \times \frac{ \cancel{90}}{ \cancel{360}} \\ [/tex]

[tex] = \cancel2 \times 31.4 \times \frac{1}{ \cancel4} \\ [/tex]

[tex] = 31.4 \times \frac{1}{2} \\ [/tex]

[tex] = \frac{31.4}{2} \\ [/tex]

[tex] = 15.7 \: km[/tex]

.

#LearnWithBrainly

Answer:

Step-by-step explanation:

Since 5/8 is a fraction lying between 0 and 1, that product will be

LESS than 1 3/4.

Answer:

132 degrees

Step-by-step explanation:

the angles of measure 2 and 3 have to add up to 180 degrees (because that's the angle of a straight line, which 2 and 3 make together)

180-48=132

Answer:

[tex]largest = x + 4 \\ smallest = x \\ range = (x + 4) - (x) \\ = 4[/tex]

Using the congruence of triangles, the value of x comes to be 15°

A circle is a locus of a point that moves in a plane such that its distance from a fixed point remains constant.

Connect A to D

So, ∠BAC=53°

From the congruence of triangles

∠BAD=∠CAD =53/2 = 26.5°

Also, ∠BAD=∠ABD (since AD=BD=radius)

So, ∠BDA + ∠BAD + ∠ABD=180°

10x-23 + 26.5+26.5 = 180

10x+30=180

10x=150

x=15°

Hence, Using the congruence of triangles, the value of x comes to be 15°

To get more about circles visit:

https://brainly.com/question/24375372

Answer:

≈9

Step-by-step explanation:

V= πr^2(h/3)

1356.48= πr^2(16/3)

r= 8.99 or about 9

Answer:

y=2x-8

Step-by-step explanation:

Answer:

x + 2y = 4

Step-by-step explanation:

Line is passing through the points (4,0) and (0, 2)

Slope of line (m) = (2 - 0)/(0-4) = 2/(-4) = - 1/2

y - intercept (b) = 2

Equation of line in slope intercept form is given as:

y = mx + b

Plugging m = - 1/2 and b = 2 in the above equation, we find:

[tex]y = - \frac{1}{2} x + 2 \\ \\ 2y = - x + 4 \\ \\ x + 2y = 4[/tex]

Maybe you could draw a random negative correlation scatter plot with the line of best fit and ask which point lands exactly on the line of fit?

Answer:

1) $0.05

2) $5.00

Step-by-step explanation:

1)

1.2/24 = 0.05

2)

22.5/4.5 = 5

Answer:

All of the above.

Answer:

the sun

Step-by-step explanation:

The sun produces a huge amount of electromagnetic energy. Much of it is visible to us.

let me know if its right plz

Answer:

92 units^2

Explanation:

Assuming both sides are congruent.

Answer:

5/12

Step-by-step explanation:

Think SohCahToa

Soh- Sin: opposite/hypotenuse

Cah- CoSin: adjacent/hypotenuse

Toa- Tan: opposite/adjacent

Opposite: The length on the opposite side of the angle.

Adjacent: The length next to the angle.

Hypotenuse: The longest side of the angle.

Answer:

26

Step-by-step explanation:

4x-2(x+y)=?

4*10-2(10-3)

40-2(7)

40-14

26

4x - 2 ( x + y ) = 4x - 2x - 2y

= 2x - 2y

= 2 ( x - y )

= 2 × ( 10 - (- 3) )

= 2 × 13

= 26

Answer: 4

Step-by-step explanation:

27,900/2 =  13,950

27,900 * .115 =3208.5

13,950/3208.5 = 4.3

4

Answer: 2/3

Step-by-step explanation:

Answer:

the answer is 2/3

Step-by-step explanation:

divide both by 8

Answer:

1  1/3

Step-by-step explanation:

Step 1: Find the whole number

We first want to find the whole number, and to do this we divide the numerator by the denominator. Since we are only interested in whole numbers, we ignore any numbers to the right of the decimal point.

8/6= 1.3333333333333 = 1

Now that we have our whole number for the mixed fraction, we need to find our new numerator for the fraction part of the mixed number.

Step 2: Get the new numerator

To work this out we'll use the whole number we calculated in step one (1) and multiply it by the original denominator (6). The result of that multiplication is then subtracted from the original numerator:

8 - (6 x 1) = 2

Step 3: Our mixed fraction

We've now simplified 8/6 to a mixed number. To see it, we just need to put the whole number together with our new numerator and original denominator:

1  2/6

Step 4: Simplifying our fraction

In this case, our fraction (2/6) can be simplified down further. In order to do that, we need to calculate the GCF (greatest common factor) of those two numbers. You can use our handy GCF calculator to work this out yourself if you want to. We already did that, and the GCF of 2 and 6 is 2.

We can now divide both the new numerator and the denominator by 2 to simplify this fraction down to its lowest terms.

2/2 = 1

6/2 = 3

When we put that together, we can see that our complete answer is,

1  1/3

Answer:

11.25

Step-by-step explanation:

Ratio of yogurt : ratio of idiot = 1 : 4

Idiot had 45

Yogurt = x

Ratio of yogurt : ratio of idiot = x : 45

Equate the ratios

1 : 4 = x : 45

1/4 = x/45

Cross product

1 * 45 = 4 * x

45 = 4x

x = 45/4

x = 11.25

Yogurt = x = 11.25

Answer:

Less than a right angle.

Step-by-step explanation:

If you really think about it, a right angle is 90 degrees, and from the looks of it, that angle shown is an acute angle. Acute angles are always smaller than a right angle, so your answer is less than a right angle. :)

Answer:

A) 3/56 + 27/56 = 30/56 ÷ 2/2 = 15/28

Step-by-step explanation:

So, there's 3/56 cities that have a lake and 27/56 cities that have a river.

Since the question is asking how much have a lake or river, we add them up.

3/56 + 27/56 = 30/56

(Divide by 2 since that's the common factor)

30/56 ÷ 2/2 = 15/28

Answer:

1) 21

2) 28

3) 13

Step-by-step explanation:

According to the word problem, a=7 and b=4.

Now, we just plug in the numbers.

14 + 7 = 21

7 ⋅ 4 = 28

5 ⋅ 4 - 7 = 13

ANYTIME YOU SEE TWO VARIABLES (LETTERS) TOGETHER, THAT MEANS MULTIPLY THEM.

AN EXAMPLE OF THIS IS NUMBER 2.

Answer:

x= 3/pi

Step-by-step explanation:

[tex] \frac{15}{2\pi} \times \frac{6}{5} = \frac{3}{2\pi} \times 6 = \frac{18}{2\pi} = \frac{9}{\pi} [/tex]

[tex] {x}^{2} \times \pi = \frac{9}{\pi} [/tex]

[tex]x = \frac{3}{\pi} [/tex]

Answer

The length is 11.5.

Step-by-step explanation:

Knowing to find the volume, you must use w,h,l, we simply need to switch up the formula. the new formula is L= V over hw = 948.75 over 11 x 7.5 = 11.5

Answer:

0

Step-by-step explanation:

It would just be straight up and down meaning it is 0.

Answer:

257.46

Step-by-step explanation:

1 mm = 0.1cm

Answer:

EF= 24

Step-by-step explanation:

[tex]\sqrt{26^{2} - 10^{2}[/tex] = 24