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3 years ago

Using radicals, write an equivalent expression to the expression y 1/5

Mathematics

1 answer:

madam [21]3 years ago

6 0

I am assuming the 1/5 is an exponent? (index of 5) square root of y to the first power

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4. Find the equation of the line that goes through the point (1,-1) and has a slope of 5.

frutty [35]

Answer: $y=5x-6$

Step-by-step explanation:

use point-slope form

$(y-y_{1}) =m(x-x_{1})$

plug in given values where m is slope and y1 and x1 are values

$y-(-1)=5(x-1)$

$y+1=5(x-1)$

$y+1=5x-5$

$y=5x-6$

4 0

2 years ago

1 4/5 + (2 3/20 + 3/5) use mental math and properties to solve write your answer in simplest form

puteri [66]

Answer: 61/12?

Step-by-step explanation:

6 0

3 years ago

Let u = (1, 2 -2), v= (2, 1, 3) and w = j + 4k. a) Find cos theta, where theta is the angle in degrees between u and w.

vodka [1.7K]

Answer: The value of cos theta is -0.352.

Step-by-step explanation:

Since we have given that

$\vec{u}=1\hat{i}+2\hat{j}-2\hat{k}\and\\\\\vec{w}=\hat{j}+4\hat{k}$

We need to find the cos theta between u and w.

As we know the formula for angle between two vectors.

$\cos\ \theta=\dfrac{\vec{u}.\vec{w}}{\mid u\mid \mid w\mid}$

So, it becomes,

$\cos \theta=\dfrac{2-8}{\sqrt{1^2+2^2+(-2)^2}\sqrt{1^2+4^2}}\\\\\cos \theta=\dfrac{-6}{\sqrt{17}\sqrt{17}}=\dfrac{-6}{17}=-0.352\\\\\theta=\cos^{-1}(\dfrac{-6}{17})=110.66^\circ$

Hence, the value of cos theta is -0.352.

8 0

3 years ago

What is 1/7 of 28.....

slava [35]

Answer:

Step-by-step explanation:

We need to perform a multiplication.

The following rule is applied:

A/B C = AC/B

In our example, the factors in the new numerator are:

28, 1,

Notice that all non-fraction factors are placed in the numerator.

The only factor in the new denominator is:

We need to reduce this fraction to the lowest terms.

This can be done by dividing out those factors that appear both in the numerator and in the denominator.

In our example, this is the common factor:

We need to evaluate a power by multiplying the base by itself as many times as the exponent indicates.

In our example, base 2 will be multiplied by itself twice.

Then we're left with our answer: 4

7 0

3 years ago

the first few steps in solving the quadratic equation 5x2 27x = 14 − 13x by completing the square are shown. 5x2 27x = 14 − 13x

Artist 52 [7]

The best step to do next is to add 80 to both sides of equation:
5 ( x² + 8 x ) + 80 = 14 + 80
and since 80 = 5 · 16
5 ( x² + 8 x + 16 ) = 94 Answer : B )
After that we will continue like this:
5 ( x + 4 )² = 94
( x + 4 )² = 18.8 ... etc

4 0

3 years ago

Read 2 more answers