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Furkat [3]
3 years ago
7

What is the value of the rational expression below when x is equal to 4? 12 + x 4+x

Mathematics
2 answers:
bonufazy [111]3 years ago
4 0

Answer:

36

Step-by-step explanation:

if you change all of the x's to 4s you get 12 + (4) 4 + 4 and that then equals to 36

alexandr402 [8]3 years ago
3 0

Answer:It would be 36

Step-by-step explanation:

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In Fig. 6.28, find the value of x and y and then show that AB || CD.​
poizon [28]

Answer:

Maybe 180° -50° = 130°

So I think x= 130°

Step-by-step explanation:

My opinion though

6 0
3 years ago
One of the legs of a right triangle measures 12 cm and the other leg measures 9 cm.
PolarNik [594]

Answer:

15cm

Step-by-step explanation:

a^2+b^2=c^2

12^2+9^2=c^2

144+81=c^2

c^2=225

c=15

7 0
2 years ago
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determine the equation of the quadratic function gievn its roots, by using the algebraic method: {8, 3}
strojnjashka [21]

Answer: y = x^2 - 11x + 24

Step-by-step explanation:

5 0
3 years ago
How do you know (2,1) is a solution to 4x +y=9
VARVARA [1.3K]

4x+y=9

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8+1=9

9=9

It is a solution

8 0
3 years ago
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The Greek mathematician Eratosthenes (ca. 276-195 BC) measured the circumference of the earthfrom the following observations. He
denpristay [2]

Answer:

Radius of the Earth is 3978.8 Miles

Circumference of the Earth is 25000 Miles

Step-by-step explanation:

The angle of the sun shone at an angle of 7.2° to the zenith

This means that the angle of the sector of the circle is 7.2° (θ)

S = Length of the sector of the circle = 500 miles

r = radius of earth

Converting 7.2° to radians

\theta =7.2\frac{\pi}{180}

S=r\theta\\\Rightarrow r=\frac{S}{\theta}\\\Rightarrow r=\frac{500}{7.2\frac{\pi}{180}}\\\Rightarrow r=3978.8\ Miles

∴ Radius of the Earth is 3978.8 Miles

C=2\pi r\\\Rightarrow C=2\times \pi \frac{500}{7.2\frac{\pi}{180}}\\\Rightarrow C=25000\ Miles

∴ Circumference of the Earth is 25000 Miles

5 0
3 years ago
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