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3 years ago

The components of vector a are given find the magnitude of that vector and the counterclockwise angle it makes with the +x axis

Mathematics

1 answer:

Verdich [7]3 years ago

5 0

I’m sure you’ll understand if you go to @HeavenSmarty2001:) Great!

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Use the quadratic formula to solve the equation. 9x2−7x+1=0 Enter your answers, in simplified radical form. x = x =

earnstyle [38]

Answer:

$x=\frac{\sqrt{13}-7 }{18} ,x=\frac{-\sqrt{13}-7 }{18}$

Step-by-step explanation:

I'm not too good with the quadratic formula so I'm going to complete the square.

First divide everything by 9 and move the 1 to the other side.

$x^2-\frac{7}{9}=-\frac{1}{9}$

Then take half of $\frac{7}{9}$ and square it and add it to both sides.

$x^2-\frac{7}{9} +\frac{49}{324}=\frac{13}{324}$

Now you can factor it.

$(x-\frac{7}{18})^2=\frac{13}{324}$

Square root:

$x-\frac{7}{18}=\frac{\sqrt{13} }{18}$

$x=\frac{\sqrt{13}-7 }{18} ,x=\frac{-\sqrt{13}-7 }{18}$

6 0

3 years ago

What is the second step in costructing congruent angles?

sattari [20]

Answer:

Given an angle formed by two lines with a common vertex, this page shows how to ... The above animation is available as a printable step-by-step instruction sheet, which can be ... This construction works by creating two congruent triangles

Step-by-step explanation:

3 0

3 years ago

Part A: If (7^2)^x=1, what is the value of x?<br> Part B: If (7^0)^x=1, what is the value of x?

Fantom [35]

A.
(7^2)^x = 1
(49)^x = 1
thus x = 0

B.
<span>(7^0)^x=1
(1)^x = 1
thus x can be any real number.
</span>

4 0

3 years ago

Kaylee has a $20 gift card to spend at an online entertainment store. The table shows the categories of items she can buy. Kayle

aalyn [17]

Answer:

see the attached

Step-by-step explanation:

The total cost of Kaylee's purchases will be the sum of products of the number bought and the cost of the item bought. She wants this total to be at most $20. In math terms, where x and y represent songs and TV episodes, the inequalities describing the scenario are ...

1.29x +2.99y ≤ 20
x ≥ 0
y ≥ 4

The attached graph shows a plot of this set of inequalities with the feasible region shaded red. The combinations of songs and TV episodes Kaylee can afford are shown by the coordinates of the red dots in the feasible region.

According to the "special," if Kaylee buys 6 songs (and 4 TV episodes), she will get a 7th song free. That is, the "special" means point (6, 4) becomes (7, 4) if there is a 7th song that Kaylee wants.

7 0

3 years ago

What is the value of k and why

gayaneshka [121]

Answer:

b is the answer

Step-by-step explanation:

8 0

3 years ago