3 years ago

You can solve the following proportion by cross multiplying. What will the equation be after you cross multiply? 3/9 = x/15

Mathematics

2 answers:

tatuchka [14]3 years ago

6 0

Its D

3 * 15 = 9x Answer

aksik [14]3 years ago

4 0

3 x
---- = -----
9 15

so 9x = 45 (and x =5).

You might be interested in

Which graph is linear<br>

Sphinxa [80]

Answer:

The third one

7 0

2 years ago

TriangleABC has three sides with these lengths: AB=9, BC=40, and CA=41, What is the value of cos C?

Otrada [13]

Answer:

9² = 40² + 41² - 2(40)(41) cos(C)

81 = 1600 + 1681 - 3280 cos(C)

81 = 3281 - 3280 cos(C)

-3200 = -3280 cos(C)

cos(C) = 3200 / 3280

cos(C) = 40 / 41

Step-by-step explanation:

3 0

3 years ago

Ross drives 183 miles in 3 hours. If Ross continues to drive at the same rate, how many miles can he drive in 6 hours?

Ket [755]

Answer:Its D.

Step-by-step explanation:If you keep adding 183 up until 6 hours it will give you 732

4 0

3 years ago

Which is greater 1/4 of 12 or 1/3 of 12

Oliga [24]

The answer is 1/3 of 12 its just easy math for me

4 0

2 years ago

Which statement is true about the extreme value of the given quadratic equation?

ICE Princess25 [194]

Answer:

Option B. The equation has a maximum value with a y-coordinate of -21.

Step-by-step explanation:

The correct quadratic equation is

$y=-3x^{2}+12x-33$

This is a vertical parabola open downward (the leading coefficient is negative)

The vertex represent a maximum

Convert to vertex form

Factor -3

$y=-3(x^{2}-4x)-33$

Complete the square

$y=-3(x^{2}-4x+2^2)-33+12$

$y=-3(x^{2}-4x+4)-21$

Rewrite as perfect squares

$y=-3(x-2)^{2}-21$

The vertex is the point (2,-21)

therefore

The equation has a maximum value with a y-coordinate of -21

3 0

3 years ago