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Kazeer [188]
3 years ago
10

Can somebody please help me with 3 and 5. Please don’t answer if you are not sure. 17 points

Mathematics
1 answer:
otez555 [7]3 years ago
7 0
The Pyth. Thm. tells us the following:  (hypo)^2 = (leg 1)^2 + (leg 2)^2.
Here the hypo is 75 miles.  One train traveled x miles and the other x+10 miles.

applying the Pyth. Thm., 

x^2 + (x+10)^2 = 75^2

which becomes   x^2 + x^2 + 20x + 400 = 5625, or
                               2x^2 + 20x - 5225 = 0.

Choose a method easy for you that will lead to a solution (x-value).
Using "completing the square," I obtained x= 47.8 miles and x = 57.8 miles.  I

It's very important to check one's work.  Suppose x = 47.8 miles.  Then x+10 = 57.8 miles.

47.8^2 + 57.8^2 = 75^ must be true.  Is it?

2284.84 + 3340.84           5625
          5625.6      is approx equal to 5625.  Close enough.

The first train traveled 47.8 miles and the second 57.8 miles.
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I had 10 cookies. i gave 1/4 of cookies to the girl how many or lift
morpeh [17]
Answer:
1/4 of 10 is 2 1/2
then 7 1/2 is left
7 0
3 years ago
Quick algebra 1 question for 50 points!
andrew-mc [135]

The predicted value of y when x =7 is -8.5

<h3>How to predict the y value?</h3>

Start by drawing the line of best fit through the points

See attachment for the graph.

From the attached graph, we have the following value

y = -8.5 when x = 7

Hence, the predicted value of y when x =7 is -8.5

Read more about scatter plots at:

brainly.com/question/2749543

#SPJ1

4 0
1 year ago
PLZ I WILL MARK BRAINLEST I NEED HELP PLZZ​
vovangra [49]

Answer:

-8 i think

Step-by-step explanation:

5 0
2 years ago
On an indoor circular track of circumference 50 feet, Joneal starts at point $S$, runs in a counterclockwise direction, and then
Archy [21]

Answer:

He stoped on 3th quarter,i.e, $C$.

Step-by-step explanation:

He ran 105 full circles ( 5280/50=105 ( rst= 30ft) ). So in the last circles he started from point S to run 30ft more.

The quarter of the circle is long 50ft/4= 12,5ft. So for 30 feets he must run 2 quarters, its 25ft. The last 5ft he ran on the 3th quarter, so he stoped on C.

This answer $C$, if $C$ is the 3th quadrant, i don't see the picture of the track.

4 0
3 years ago
4.Find the first five terms of the recursive sequence
klemol [59]

Answer:

5, 12, 19, 26, 33

Step-by-step explanation:

Using the recursive rule and a₁ = 5 , then

a₂ = a₁ + 7 = 5 + 7 = 12

a₃ = a₂ + 7 = 12 + 7 = 19

a₄ = a₃ + 7 = 19 + 7 = 26

a₅ = a₄ + 7 = 26 + 7 = 33

The first 5 terms are 5, 12, 19, 26, 33

4 0
3 years ago
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