Ask question

Ask question

All categories

professor190 [17]

2 years ago

15

Trihao is driving from cambridge to london Assume the distance between cambridge and london is 100 km Given that trihao drives a

t an average speed of 80km/h work out his journey time

1 answer:

Paraphin [41]2 years ago

8 0

average speed equals distance over time 100/80 will give you 5/4

You might be interested in

If you know that R' (20)=50 and R''(20)=-4, approximate R'(24)

vladimir1956 [14]

Approximate <em>R'</em> by using a linear approximation: for <em>x</em> close enough to 24, you have

<em>R'(x)</em> ≈ <em>L(x)</em> = <em>R' </em>(20) + <em>R''</em> (20) (<em>x</em> - 20)

Then

<em>R'</em> (24) ≈ <em>R'</em> (20) + <em>R''</em> (20) (24 - 20) = -4 + 50 (24 - 20) = 196

4 0

3 years ago

Honestly I just can’t even figure this stuff out and i need to turn it in if you can help me with ANY questions please do.

Andrews [41]

Answer:

4.the symbol is x

Step-by-step explanation:

its a letter and used in replace of a number yet to find or solved

2. an equation

4 0

4 years ago

Read 2 more answers

How many grams of tea leaves did she use to make tea last week ?

iren [92.7K]

Answer:

12

Step-by-step explanation:

288 / 24 = 12

12 x 6 = 72

5 0

3 years ago

Anser true or false:

kakasveta [241]

Answer:

true

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

The function f(r) = π determines the area of a circle in cm2, A, in terms of the radius of the circle in cm, r. a. Write a funct

ollegr [7]

Answer with Step-by-step explanation:

We are given that

a. $f(r)=\pi r^2$

$A=\pi r^2$

$r^2=\frac{A}{\pi}$

$g(A)=r=\sqrt{\frac{A}{\pi}}$

b.Radius=2.58 cm

Substitute the values in the formula and $\pi=3.14$

$f(2.58)=3.14(2.58)^2=20.9 cm^2$

Hence, the area of circle =20.9 square cm

c.Area of circle=1530 square cm

$r=\sqrt{\frac{1530}{3.14}}=22.07 cm$

Hence, the radius of circle=22.07 cm

c.Area of circle of radius 15.2 cm= $A_1=3.14(15.2)^2=725.47 cm^2$

Area of circle of radius 15.1 cm= $A_2=3.14(15.1)^2=715.95 cm^2$

$A_1-A_2=725.47-715.95=9.52 cm^2$

Hence, the area of circle whose radius is 15.2 cm is greater than the area of circle of radius 15.1 cm by 9.52 square cm .

6 0

3 years ago