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3 years ago

4(8 + 3x) Describe the two factors in this question.

Mathematics

1 answer:

Georgia [21]3 years ago

3 0

4(8 + 3x)
4(8) + 4(3x)
32 + 12x

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The total flying time for two flights is 6 hours. The flight time for the first flight is half of the second. How long is each f

lina2011 [118]

2x=6
2 represents the how many flights
x represents how long each was (in hours)
6 represents the total time for each flight( in hours)

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3 years ago

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PLEASE HELP!!!!!!

Harrizon [31]

Answer:

The inverse is ±sqrt((x+4)/9)

Step-by-step explanation:

y = 9x^2 – 4

We want to find the inverse

Exchange x and y

x = 9y^2 -4

Solve for y

Add 4 to each side

x+4 = 9y^2 -4+4

x+4 = 9y^2

Divide each side by 9

(x+4)/9 = 9/9y^2

(x+4)/9 = y^2

Take the square root of each side

±sqrt((x+4)/9) = sqrt(y^2)

±sqrt((x+4)/9) = y

The inverse is ±sqrt((x+4)/9)

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3 years ago

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What is the answer to −1 + (-3)

kolezko [41]

Answer:

-4

Step-by-step explanation:

-1 + -3 = -4

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3 years ago

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bonufazy [111]

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2 years ago

Find the missing y-coordinate that makes the two triangles congruent. Triangle ABC: A(8,4), B(2,6), C(5, 0) Triangle MNO: M(7,4)

Zolol [24]

Answer:

y = 8

Step-by-step explanation:

Two triangles are said to be congruent if all the three sides and three angles of both triangles are equal.

The distance between two points on the coordinate plane is given as:

$Distance=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2} \\$

In triangle ABC:

$|AB|=\sqrt{(2-8)^2+(6-4^2)}=\sqrt{40} =2\sqrt{10}\\\\|AC|=\sqrt{(5-8)^2+(0-4)^2}=5\\\\|BC|=\sqrt{(5-2)^2+(0-6)^2 }=\sqrt{45}$

In triangle MNO:

$|MN|=\sqrt{(1-7)^2+(2-4^2)}=\sqrt{40} =2\sqrt{10}\\\\|MO|=\sqrt{(4-7)^2+(y-4)^2}\\\\|NO|=\sqrt{(4-1)^2+(y-2)^2 }$

Since triangle ABC and triangle MNO are congruent, hence:

|AB| = |MN| = 2√10, |AC| = |MO| = 5, |BC| = |NO| = √45

$|AC|=|MO|=5\\\\\sqrt{(4-7)^2+(y-4)^2}=5\\\\(4-7)^2+(y-4)^2=25\\\\9 +(y-4)^2=25\\\\(y-4)^2=16\\\\square\ root\ of\ both\ sides:\\\\y-4=4\\\\y=4+4\\\\y=8$

Hence O = (4, 8)

3 0

3 years ago