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mezya [45]
3 years ago
5

Is |a + b| = |a| + |b| true for all rational numbers a and b?

Mathematics
1 answer:
Serhud [2]3 years ago
4 0

Answer:

Yes

Step-by-step explanation:

Lets verify

  • a be 3/5
  • b be 2/5

LHS

.

\\ \sf\longmapsto \left|\dfrac{3}{5}+\dfrac{2}{5}\right|

\\ \sf\longmapsto 1

RHS

\\ \sf\longmapsto \left|\dfrac{3}{5}\right|+\left|\dfrac{2}{5}\right|

\\ \sf\longmapsto 1

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What is the volume of a sphere with a radius of 1/2
krok68 [10]

Step-by-step explanation:

Volume = \frac{4}{3} \pi r^3

V = \frac{4}{3} \pi (\frac{1}{2} )^3

V=\frac{4}{3}\pi  (\frac{1}{8})

V= 0.5233..

So, the volume of the sphere would be 0.523.

7 0
3 years ago
Jesse is baking several cakes for a bake sale. A pound bag of flour is enough to make 4 cakes. How much flour is needed to make
Leto [7]

Answer:

4 ounces of flour will make 1 cake.

Step-by-step explanation:

16 ounces = 1 pound

16 ounces divided by 4 cakes = 4 ounces for 1 cake

5 0
4 years ago
Please help, if you get it right you’ll get brainliest :))
bezimeni [28]

Answer:

The answer is A

Step-by-step explanation:

The answer is A because if you flip it over the y-axis it will be on the same line as before.

Hope this helps!!

7 0
3 years ago
Can someone please help me:!<br> )
GenaCL600 [577]

Answer:

u=-5

Step-by-step explanation:

Slope is y(2)-y(1)/x(2)-x(1). So, your equation is u-10/-2-1. -2-1=-3, so the top number has to be negative to get a positive and has to be 5 times more than three. So, the numerator for the slope would be -15, because -15/-3=5. So, u is equal to -15-10. Therefore u equals -5.

(hope this helps :P)

3 0
3 years ago
Read 2 more answers
What is the solution of StartRoot x + 12 EndRoot = x?
Ber [7]

Answer:

x = 4      or x = -3

Step-by-step explanation:

\sqrt{x+12}=x

Take square both the sides,

(\sqrt{x+12})^{2}=x^{2}\\\\x+12=x^{2}

x² - x - 12 = 0

x² - 4x + 3x - 3*4 =0

x*(x - 4) + 3*(x - 4)= 0

(x- 4 )(x+3) =0

x -4 =0   or x + 3 = 0

x = 4      or x = -3

4 0
3 years ago
Read 2 more answers
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