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ExtremeBDS [4]
3 years ago
7

Train a travels a distance of 270 miles in the same amount of time training beef travels 160 miles. train a travels 55 miles per

hour faster than train B. let X represent the speed of train b.
set up an equation to represent the situation. do not solve. ​
Mathematics
1 answer:
Orlov [11]3 years ago
6 0

Answer:

b but if I'm wrong then I'm sry

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Enter the value for x that makes the equation 4x-2+3x-7 true <br><br>​
expeople1 [14]

Answer:

I think the answer is

x =  \frac{9}{7}

Step-by-step explanation:

Reason :

4x - 2 + 3x - 7 = 0 \\ collect \: like \: terms \\ 4x + 3x - 7 - 2 = 0 \\ 7x - 9 = 0 \\ 7x = 9 \\ x =  \frac{9}{7}

Therefore

x =  \frac{9}{7}

3 0
3 years ago
1. since A^2= 36x^2, a=?<br> 2. since b^2= 49, b=?
Wewaii [24]

Answer:

D

Step-by-step explanation:

36x² - 49 ← is a difference of squares and factors in general as

a² - b² = (a - b)(a + b)

then

36x² - 49

= (6x)² - 7²

= (6x - 7)(6x + 7)

Thus 6x - 7 is a factor of the expression

7 0
2 years ago
Read 2 more answers
If ∠G is supplementary to ∠H and the measure of ∠G is 65° what is the measure of ∠H?
Elina [12.6K]

Solution:

<u>Given:</u>

  • ∠G = 65°

Supplementary angles are a pair of angles that sum up to 180°.

<u>It should be noted:</u>

  • If ∠G and ∠H are a pair of supplementary angles, they both sum up to 180°.

Equation formed: ∠G + ∠H = 180

<u>Substitute the values into the equation.</u>

  • ∠G + ∠H = 180
  • => 65 + ∠H = 180

<u>Subtract 65 both sides.</u>

  • => 65 - 65 + ∠H = 180 - 65
  • => ∠H = 180 - 65 = 115°

7 0
2 years ago
An investment account earns 4% per year compounded annually. If the initial investment was $4,000.00, how much is in the account
Alisiya [41]
The account is $4,480 after 3 years with a 4% investment
3 0
3 years ago
A random sample has been taken from a population. A statistician, using this sample, needs to decide whether to construct a 90 p
AURORKA [14]

Answer:

Step-by-step explanation: a confidence interval is a range that shows how precise the measurement is. if a statistician decides to construct using 90 percent C I over a 95% C I, it tells you that you have 10% chance of being wrong rather than 5% chance of being wrong while using the 95%. Also a 90 percent confidence interval would be narrower than a 95 percent confidence interval

5 0
3 years ago
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