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3 years ago

In 3/13 the 3 is called the: index radical sign radicand radical

Mathematics

1 answer:

zubka84 [21]3 years ago

3 0

Answer:

index

Step-by-step explanation:

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What is the angle between a=7i+3j and b=4i-j

PolarNik [594]

$a\cdot b=(7)(4)+(3)(-1)=25\\\\|a|=\sqrt{7^{2}+3^{2}}=\sqrt{58}\\\\|b|=\sqrt{4^{2}+(-1)^{2}}=\sqrt{17}\\\\\cos \theta=\frac{25}{\sqrt{58}\sqrt{17}}\\\\\theta=\cos^{-1} \left(\frac{25}{\sqrt{58}\sqrt{17}} \right) \approx 37.235^{\circ}$

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2 years ago

Sati [7]

Answer:

Step-by-step explanation:

(5, -1) and (-5, 2)

y=-3/10x+1/2

-1= 3/10 (5) + 1/2

-1 = -15/10 + 1/2

-1 = -1.5 + 0.5

-1 =-1

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3 years ago

At last week's track meet, Stacy ran 9/12 of a km, Jules ran 4/5 of a km, and Raul ran 3/4 of a mile. Which two students ran the

koban [17]

Answer: No two students ran same distance

Step-by-step explanation:

Given

Stacy ran $\frac{9}{12}$ of a km i.e.

$\Rightarrow 1\times \dfrac{9}{12}=\dfrac{3}{4}=0.75\ km$

Jules ran $\frac{4}{5}$ of a km i.e.

$\Rightarrow 1\times \dfrac{4}{5}=0.8\ km$

Raul ran $\frac{3}{4}$ of mile i.e.

$\Rightarrow 1\times \dfrac{3}{4}=0.75\ miles\\\\\text{1 mile=1.6 km}\\\\\Rightarrow 0.75\ miles=1.2\ km$

So, no two students ran the same distance.

6 0

3 years ago

Express 763636363636 as a rational number

shtirl [24]

$x=0.7636363\ldots$
$10x=7.636363\ldots$
$1000x=763.636363\ldots$

$\implies1000x-10x=990x=756\implies x=\dfrac{756}{990}=\dfrac{42}{55}$

4 0

3 years ago

2/3 Divided by 1/4.

Lynna [10]

Answer:

2.66

Step-by-step explanation:

2.66

6 0

3 years ago

Read 2 more answers