an airplane descends from 15,000 feet at a rate of 200 feet per second.
A. 15,000t + 200
B. 15,000 + 200t

9514 1404 393

Answer:

  5 units

Step-by-step explanation:

In this geometry, all of the triangles are similar. So, the ratio of short side to long side can be ...

  x/10 = 10/4x

  4x^2 = 100 . . . . . cross multiply

  x^2 = 25 . . . . . . . divide by 4

  x = 5 . . . . . . . . . . square root

Answer:

x = 25

Step-by-step explanation:

3x + 4x + 5 = 180

        7x + 5 = 180

              - 5     - 5

              7x = 175

                x = 25

Answer: It is proportional because 195/3 equals 65 and 325/5 equals 65 as well, so it is proportional.

Hope this helps! :)

Answer:

7.7u - 5.1v + 14.5w

Step-by-step explanation:

Given length:

Side A = (1.2u+1.8v) centimeters,

Side B = (6.5u+8.7w) centimeters

Side C = (5.8w-6.9v) centimeters

Perimeter of a triangle = side A + side B + side C

= (1.2u+1.8v) + (6.5u+8.7w) + (5.8w-6.9v)

= 1.2u + 1.8v + 6.5u + 8.7w + 5.8w - 6.9v

Collect like terms

= 1.2u + 6.5u + 1.8v - 6.9v + 8.7w + 5.8w

= 7.7u - 5.1v + 14.5w

Therefore, the perimeter of the triangle is 7.7u - 5.1v + 14.5w

Answer:

1 solution.

Step-by-step explanation:

Step 1: Write equation

-9s + 9 = -8s

Step 2: Solve for s

Step 3: Check

Plug in s to verify it's a solution.

-9(9) + 9 = -8(9)

-81 + 9 = -72

-72 = -72

Answer:

one solution s=9

Step-by-step explanation:

-9s + 9 =-8s, add 9s on both sides

+9s        +9s

-------------------

9=s

Answer:

0.3 is a Rational Number

Step-by-step explanation:

The simplified form of the expression (2x^2+4−x^3)+(−4x^2+6x^3−2) in standard form is -2x^3 + 2x^2 + 2.

What is an expression?

An expression is a mathematical phrase that can contain numbers, variables, and operators. It represents a value or a calculation, but it is not simplified to a single value.

To simplify the expression (2x^2+4−x^3)+(−4x^2+6x^3−2) in the standard form, we can combine like terms and apply the order of operations.

Step 1: Add and subtract the terms inside the first set of parentheses:

2x^2 + 4 - x^3 + (-4x^2 + 6x^3 - 2)

Step 2: Combine like terms:

-2x^3 + 2x^2 + 4 - 2

Step 3: Rearrange the terms in standard form, which is the form with the variable with the highest exponent first, and the numerical constant last:

-2x^3 + 2x^2 - 2 + 4

Step 4: Combine the constant terms:

-2x^3 + 2x^2 + 2

Hence, The simplified form of the expression (2x^2+4−x^3)+(−4x^2+6x^3−2) in standard form is -2x^3 + 2x^2 + 2.

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Answer:

26

Step-by-step explanation:

searched on google.

Answer:

(1,-1)

Step-by-step explanation:

the coordinates of the image of point F after a reflection across the x-axis is (1,-1).

In mathematics, a reflection (also spelled reflexion) is a mapping from a Euclidean space to itself that is an isometry with a hyper plane as a set of fixed.

Here, given that,

Triangle EFG has vertices E(-3,1), F(1,1), and G (4,5).

We have to find the coordinates of the image of point F after a reflection across the x-axis.

Now, we know that,

The rule for reflecting over the X axis is to negate the value of the y-coordinate of each point, but leave the x-value the same.

Hence, the coordinates of the image of point F after a reflection across the x-axis is (1,-1).

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Answer:

5*10^10

Step-by-step explanation:

10 to the power of 10 is 10^10.

10^10*9 is 90000000000

10^10*4 is 40000000000

90000000000-40000000000=50000000000

5*10^10

Answer:

x= -b ±√b²- 4ac/2a

Step-by-step explanation:

ax2 + bx + c = 0

Dividing the quadratic equation by a gives

x2 + b/ax + c/a = 0

x2 + b/ax = - c/a

Applying the square formula

(x)^2 + 2(x) (b/2a) + (b/2a)^2= + (b/2a)^2- c/a

(x+b/2a)^2= b²/4a² - c/a

(x+b/2a)^2= b²/4a² - 4ac/4a²

(x+b/2a)^2= b²- 4ac/4a²

Taking square root of both sides gives

(x+b/2a)= ±√b²- 4ac/2a

x= -b/2a±√b²- 4ac/2a

x= -b ±√b²- 4ac/2a

This is called the quadratic formula and it can solve the value for x for the given value of a, b and c for the quadratic equation.

From this it is concluded that

Discriminant = b2 - 4ac > 0 means there will be two distinct real roots. Discriminant = b2 - 4ac = 0 means there will be only one real root. Discriminant = b2 - 4ac < 0 means there will be no real roots.

This is because a square root of a value greater than 0 is possible and gives two values for roots of x.

The square root of a value less than 0 gives a negative number and therefore the roots are an imaginary number.

The square root of a value greater equal to 0 gives a zero leaving behind only one real root.

Answer:

its either b or c but I'm pretty sure its b

Step-by-step explanation:

Good luck

Answer: 40 tons

Step-by-step explanation:

One Ton= 2,000 lbs.

80,000/2,000= 40

Answer:

the answer is 2

Step-by-step explanation:

this is because when you round 2.09 to the nearest whole number it is 2

Answer:

44.9 megabytes

Step-by-step explanation:

all you need to do is find 19.7% of 228!

19.7% of 228 = 44.916

Answer would be 4x=60

Answer:

4d = 60

Step-by-step explanation:

Let d represent the number of days.

4d = 60

Answer:

a = -2

Step-by-step explanation:

Subtract 10 from both sides:

7a + 10 - 10 = 2a - 10

Simplify:

7a = 2a - 10

Subtract 2a from both sides:

7a - 2a = 2a - 10 - 2a

Simplify:

5a = -10

Divide both sides by 5 and simplify:

a = -2

Answer:

A = -2

Step-by-step explanation:

Subtract 10 from both sides:

7a + 10 = 2a -10

Simplify the expression, 7a = 2a - 10

Subtract 2a from both sides next

7a - 2a = 2a - 10 - 2a

Subtract 7a - 2a

5a = -10

5a / 5 = -10/5

a = -2

Answer:

Straight angle I hope if this helps please mark me as brainliest

Step-by-step explanation:

180° degrees

Answer:

A should be 42 and G should be i think 28-180 which is 152. hope that helps

Answer:

A

Step-by-step explanation:

Answer:

6.35

Step-by-step explanation:

[tex]Ainsley \: walked \: in \: \frac{1}{3} \: \: of \: a \: day \ \: = \frac{3}{5} mile[/tex]

[tex] = \frac{1}{3} \times 24 = \frac{3}{5} [/tex]

[tex]8 \: hours = \frac{3}{5} \: miles[/tex]

[tex]Sarah \: walked \: in \: \frac{2}{6} of \: a \: day \: = \frac{5}{8} miles[/tex]

[tex] \frac{2}{6} \times 24 = \frac{5}{8} [/tex]

[tex]8 \: hours \: = \frac{5}{8} \: miles[/tex]

Let us see who walked more :

[tex]Ainsley \: walked \: = \frac{3 \times 8}{40} [/tex]

[tex] = \frac{24}{40} \: miles[/tex]

[tex]Sarah \: walked \: = \frac{5 \times 5}{40} [/tex]

[tex] = \frac{25}{40} \: miles[/tex]

[tex] \frac{24}{40} < \frac{25}{40} [/tex]

Sarah walked farther than Ainsley .

[tex] \frac{25}{40} - \frac{24}{40} = \frac{1}{40} \: miles[/tex]

∴ Sarah walked farther than Ainsley by 1/40 miles .

Answer:

$80 bucks

Step-by-step explanation:

The elephant that weigh 2.85 tons after rounding up is [tex](fanny: 2.849 tons)[/tex]

Therefore,  Fourth option is correct.

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Answer:

Angle bisector

Step-by-step explanation:

A bisector cuts a line into two even parts, therefore an angle bisector would split an angle into two congruent angles, each that have exactly half the measure of the original angle.

it's both a function and relation a function because it has independent variable and dependent variable and it's a relation because there is a relationship between the values

Answer:

55 is c

Step-by-step explanation:

what number times 4 equals 20? ...5

so times 11 and 5 and you'll get 55

Answer:

c=55

20/4 is 5

11*5=55