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3 years ago

Which proportion is equivalent to a/b = c/d

Mathematics

2 answers:

earnstyle [38]3 years ago

6 0

A.....................................

PilotLPTM [1.2K]3 years ago

4 0

The proportion equal to a/b = c/d is A.) A/C = B/D

We will know if a proportion is equivalent when its cross products are equal.

a/b = c/d where ad = bc

since ad = bc, a/c = b/d

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Type the correct answer in the box. Use numerals instead of words. Erika and Rita have added a 1-mile walk to their daily exerci

Amiraneli [1.4K]

Answer:

The answer is 1.2

Step-by-step explanation:

It takes Rita 22.75 on average, and it take Erika 21.55 to walk the mile on average.

21.55 + 1.2 = 22.75

therefore, it takes Erika 1.2 minutes per mile less than Rita.

8 0

2 years ago

Which transformation maps the pre-image to the image?

Ede4ka [16]

Answer:

Reflection

Step-by-step explanation:

Because reflecting yourself in a mirror means pre image to image

4 0

2 years ago

Multiply polynomials

Burka [1]

Answer -2x^4 - 2x^3 + 22x^2 - 30x + 12

Here's your solution

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

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

=> firstly multiple whole with -x^2

=> -x^2(2x^2 - 4x + 2) = -2x^4 + 4x^3 - 2x^2

=> now with -3x

=> -3x(2x^2 - 4x + 2) = -6x^3 +12x^2 -6x

=> with 6

=> 6(2x^2 - 4x + 2) = 12x^2 - 24x + 12

=> now add all terms

=> -2x^4 - 2x^3 + 22x^2 - 30x + 12

hope it helps and your day will be full of happiness ^_^

4 0

2 years ago

What is the volume of the sphere?

poizon [28]

Answer: 113.1

Step-by-step explanation:

The formula is $\frac{4}{3}$ $\pi$ $r^{3}$

The radius is 3, and 3 cubed is 27.

Then, 27 x $\pi$ is about 84.82

Finally, 84.82 x $\frac{4}{3}$ is about 113.1

Hope this helps. Please mark as brainliest, thanks!

5 0

3 years ago

Read 2 more answers

The sector of a circle shown to the left has its center at point OO. The arc XYZXYZ has length 10.810.8, and the central angle X

BARSIC [14]

Answer: Length of the radius of the sector is 6 units.

Step-by-step explanation:

Since we have given that

Length of an arc = 10.8

Radian of a central angle = 1.8

First we convert radian into degrees,

$1\ radian= 57.295779513\textdegree\\\\1.8\ radians=1.8\times 57.3\textdegree\\\\1.8\ radians=103.14\textdegree$

As we know the formula for "Length of an arc":

$\text{Length of an arc}=\frac{\theta}{360\textdegree}\times 2\pi r\\\\10.8=\frac{103.14}{360\textdegree}\times 2\times \frac{22}{7}\times r\\\\10.8=1.8r\\\\r=\frac{10.8}{1.8}\\\\r=6$

Hence, Length of the radius of the sector is 6 units.

3 0

2 years ago