All categories

3 years ago

Train a has a speed of 15 miles per hour greater than that of train

1 answer:

8 0

150 mil - 120 mil = 30 mil
30 mil / 15 mph = 2 hr
120 mil / 2 hr = 60 mph
150 mil / 2 hr = 75 mph
Train A: 75 mph
Train B: 60 mph

You might be interested in

(2+√3)+(4-√3) <img src="https://tex.z-dn.net/?f=%20" id="TexFormula1" title=" " alt=" " align="absmiddle" class="latex-formul

murzikaleks [220]

Explanation :

________________________________

Given:

(2+√3)+(4-√3)

To Find:

Evaluate the expression

Solution:

⇨Step 1:

Remove the parentheses

(2+√3)+(4-√3)

When there is + or no sign in front of an expression in parentheses, the expression remains the same

= 2 + √3+ 4-√3

⇨Step 2:

Cancel the opposite terms √3 and -√3

"Two numbers are opposites if they have the same absolute value but different signs"

= 2 + 4

⇨Step 3:

Add the numbers

= 6

Hence (2+√3)+(4-√3) = 6.

6 0

2 years ago

What is the area of a rectangle with a length of 12in and a hight of 4.5 in

IgorC [24]

54in squared because to get the area you have to use this equation LxWxH

6 0

3 years ago

Solve pls brainliest And the option is for all 3 of them

SCORPION-xisa [38]

Answer:

a). associative property 4 + (7+0) = (4+7) + 2

b). commutative property 4 + 6 = 6 + 4

c). identity property 8 + 0 = 8

8 0

2 years ago

Read 2 more answers

Evaluate the surface integral. ??s (x2 y2 z2 ds s is the part of the cylinder x2 y2 = 4 that lies between the planes z = 0 and z

kondor19780726 [428]

The surface $S$ can be parameterized by

$\mathbf r(\theta,z)=(2\cos\theta,2\sin\theta,z)$

where $0\le\theta\le2\pi$ and $0\le z\le2$ . Then the surface integral can be computed with

$\displaystyle\iint_S(x^2+y^2+z^2)\,\mathrm dS$
$\displaystyle=\int_{\theta=0}^{\theta=2\pi}\int_{z=0}^{z=2}(4\cos^2\theta+4\sin^2\theta+z^2)\|\mathbf r_\theta\times\mathbf r_z\|\,\mathrm dz\,\mathrm d\theta=\dfrac{128\pi}3$

6 0

3 years ago

Solve each problem and decide which is the best of the choices given.

Nikitich [7]

55 is the answer !!!!

3 0

3 years ago

Read 2 more answers