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Sergeeva-Olga [200]

3 years ago

5

The fastest train in the Western Hemisphere is the Acela Express. On a route between Boston, Massachusetts, and New Haven, Conne

cticut, the train regularly travels 135 miles in 60 minutes.
What is the speed, in miles per minute, on this portion of the route?

1 answer:

Vinil7 [7]3 years ago

3 0

What answer is 75 is the correct answer

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I need help pls, i would appreciate it !!

kramer

Answer:

a. x = 1.2, b. A = 32.1°

Step-by-step explanation:

1.41²-.75²=x²

a. x = 1.2

sin A = 0.75/1.41

b. A = 32.1°

5 0

3 years ago

Use the distributive property to find two expressions that are equivalent to 7(3x - 4)

ehidna [41]

I could only figure out one... sorry! Good luck

The answer is: 21x-28

7 0

3 years ago

Donna takes classes at both Westside community college and pinewood community college. at westside , class fees are $98 per cred

Alex777 [14]

Answer:

Expression for the combined total dollar amount she paid for her class fees is (2185 - 17 w)

Step-by-step explanation:

Let Donna is taking w credit hours at Westside.

Total combined credit hours at two schools = 19 hours

So, the number of credit hours at Pinewood = 19 - w

The per hour fees credit of Westside community college = $98

So, the total fees paid for w hours = w x Fees per hour

= w ( $98) = $(98w)

⇒The fees Donna pays at Westside community college = $ (98 w)

The per hour fees credit of Pinewood community college = $115

So, the total fees paid for (19 -w) hours = (19 -w) x Fees per hour

= (19 -w) ( $115) = $(2185 - 115 w)

⇒The fees Donna pays at Pinewood community college =$(2185 - 115 w)

Hence, the total fees paid by Donna

= Fees at Westside + Fees at Pinewood

= $ (98 w) + $(2185 - 115 w)

= $(2185 - 17 w)

Hence, expression for the combined total dollar amount she paid for her class fees is $(2185 - 17 w)

8 0

4 years ago

CAN YOU ACCEP THIS CHALLEGE OF 5 QUESTION ITS MATH DO IT IF YOU DARE

solong [7]

Answer:

Hello!!

The answer to the first question is D. For 15 days

The answer to the second question is A. or 3 x 1/4

The answer to the third question is A. or 1/20 cup

The answer to the fourth question is A.

The answer to the fifth question is A. or 4 quarts

Step-by-step explanation:

These are the correct answers!

have a nice day!

5 0

3 years ago

Solve the system.

ad-work [718]

Answer:

Step-by-step explanation:

$y = \dfrac{1}{2}*(x - 3)^{2}\\\\\\2y = (x-3)^{2}\\\\\\2y = x^{2}-2*x*3 + 3^{2}\\\\\\2y = x^{2} - 6x + 9 \ --------------(I)$

y = -x + 7 -------------(II)

Plugin y = -x + 7 in equation (I)

2(-x + 7) =x² - 6x + 9

-2x + 14 =x ² - 6x + 9

x² - 6x + 9 = -2x + 14

x² - 6x + 9 + 2x - 14 = 0

x² - 4x - 5 = 0

x² -5x + x - 5 = 0

x(x - 5) + 1(x - 5) = 0

(x -5)(x + 1) = 0

x- 5 = 0 ; x + 1 = 0

x = 5 ; x = -1

When x = 5 ⇒ y = -5 + 7 = 2

When x = -1 ⇒ y = -(-1) + 7 = 1 + 7 = 8

Solution (5 , 2) & (-1 , 8)

5 0

3 years ago

Read 2 more answers