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2 years ago

Why is it I paid for this app but i am not beneiting from it? will have to get rid! useless

1 answer:

7 0

You paid ..I’m broke so I can’t lol ..in my opinion it can be helpful sometimes because some of the questions don’t get answered or it’s someone just saying “I don’t know

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Find the area of a triangle with the given description. (Round your answer to one decimal place.)

Allushta [10]

9514 1404 393

Answer:

67.0 square units

Step-by-step explanation:

The formula for the area is ...

Area = 1/2ab·sin(C)

Area = (1/2)(14)(28)sin(20°) ≈ 67.036 . . . . square units

The area of the triangle is about 67.0 square units.

6 0

2 years ago

In each bouquet of flowers, there are 5 roses and 8 white carnations. Complete the table to find

VLD [36.1K]

Answer:

25 roses and 40 white carnations

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Solve the following system of linear equations: 3x1+6x2+6x3 = -9 -2x1–3x2-3x3 = 3 If the system has infinitely many solutions, y

choli [55]

Answer:

The set of solutions is $\{\left[\begin{array}{c}x\\y\\z\end{array}\right]=\left[\begin{array}{c}12\\-7-r\\r\end{array}\right]: \text{r is a real number} \}$

Step-by-step explanation:

The augmented matrix of the system is $\left[\begin{array}{ccccc}3&6&6&-9\\-2&-3&-3&3\end{array}\right]$ .

We will use rows operations for find the echelon form of the matrix.

In row 2 we subtract $\frac{2}{3}$ from row 1. (R2- 2/3R1) and we obtain the matrix $\left[\begin{array}{cccc}3&6&6&-9\\0&1&1&-7\end{array}\right]$
We multiply the row 1 by $\frac{1}{3}$ .

Now we solve for the unknown variables:

$x_2+x_3=-7$ , $x_2=-7-x_3$
$x_1+2x_2+2x_3=-2$ , $x_1+2(-7-x_3)+2x_3=-2$ then $x_1=12$

The system has a free variable, the the system has infinite solutions and the set of solutions is $\{\left[\begin{array}{c}x\\y\\z\end{array}\right]=\left[\begin{array}{c}12\\-7-r\\r\end{array}\right]: \text{r is a real number} \}$

6 0

2 years ago

The radioisotope Phosphorus-32 is used in leukemia therapy. The half-life of this isotope is 14.26 days.

disa [49]

B is the best answer that i can dee

8 0

3 years ago

Read 2 more answers

Kamila [148]

Answer:

Therefore,

The height is 23.3 ft.

Step-by-step explanation:

Given:

ΔABC ~ ΔXYZ

AC = 108.5 ft

BC = h

XZ = 14 ft

YZ = 3ft

To Find:

h = ?

Solution:

Δ ABC ~ Δ XYZ….Given

If two triangles are similar then their sides are in proportion.

$\dfrac{AB}{XY} =\dfrac{BC}{YZ}=\dfrac{AC}{XZ} \textrm{corresponding sides of similar triangles are in proportion}\\$

Substituting the values we get

$\dfrac{BC}{YZ}=\dfrac{AC}{XZ}$

$\dfrac{h}{3}=\dfrac{108.5}{14}\\\\h=\dfrac{325.5}{14}=23.25=23.3$ (nearest tenth)

Therefore,

The height is 23.3 ft.

3 0

3 years ago

Why is it I paid for this app but i am not beneiting from it? will have to get rid! useless​

Why is it I paid for this app but i am not beneiting from it? will have to get rid! useless