if a plane can travel 490 miles per hour with the wind and 450 miles per hour against the wind, find the speed of the plane without a wind and the speed of the wind.

Answers

Answer 1

Answer: s=plane's speed
w=windspeed

travels490 mh with wind
450 agains wind

s+w=490mph
s-w=450
add them toegether

s+w=490
s-w=450 +
2s+0w=940

2s=940
divide by 2
s=470
find wind speed
s+w=490
470+w=490
w=20

windspeed=20mph
planespeed=470mph

Answer 2

Answer: The accurate answer will be 470mi/hour

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-3(x - 1) 7x=27 You have to Distribute it to get the answer

What is the value of the fourth term in a geometric sequence for which a=15 and r= 1/3

Answers

Answer:

Step-by-step explanation:

hello :

the n-ieme term is : An=A1×r^(n-1)

A1 the first term r : the common ratio

in this exercice : A1 =15 r = 1/3 n = 4

A4=15×(1/3)^(4) =15×4^4 =3840

A parabola intersects the x-axis at x=3, equals, 3 and x=9.

Answers

Answer: x is 6

Step-by-step explanation:

where a and b are x intercepts given to us.

So rewriting in factored form:

y = ( $x-3$ )( $x-9$ )

so now you have to simplify it using the formula $y=$ $ax^(2)$ $+$ $bx-c$

y= $x^(2)$ - $12x$ + $27$

so with this formula $x=(-b)/(2a)$ we can find the x coordinate

$x=(-(-12))/(2(1))$

and the answer would be 6

Which expressions are equivalent to the one below. Check all that apply. 49^x

Answers

where are the following choices

Look at the graph. Which of the following statements is reflected in the chart? A. Union soldiers were more likely to die of their wounds than Confederate soldiers. B. Soldiers in the Civil War were more likely to die of battle wounds than disease.
C. Soldiers in the Civil War were more likely to die of disease than wounds in battle. D. Union soldiers were less likely to die of wounds or disease than Confederate soldiers.
I think C or B

Answers

The answer is C. Disease has more deaths than battle wounds so it would be correct. A is kinda close but I don't think it's the answer. D is completely wrong cuz union had more deaths in both sections

Answer:

The answer is C.

Step-by-step explanation:

i took the test

Jake has a bag of 50 beads, of which some are red and the remaining are yellow. Jake randomly pulls out a bead from the bag, records the color, and replaces it in the bag. Jake has already recorded 9 red and 6 yellow beads. Based on the result, what is most likely the number of red beads in the bag?A. 10
B. 20
C. 30
D. 60

Answers

the answer is c dont know if im right sorry

A colony of ants carried away 16 of your muffins. That was 4/5 of all of them! With how many did you start?

Answers

20 because 4/5 is 16 so 4•5=20 like 4•4=16

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