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seraphim [82]
3 years ago
12

Simplify the expression: 3.2( -6.5)

Mathematics
2 answers:
choli [55]3 years ago
6 0

Answer:

-20.8

Step-by-step explanation:

bixtya [17]3 years ago
4 0

Answer:

-20.8

Step-by-step explanation:

1. write the problem

\begin{array}{l}\ \ \ \ 3.2\\\underline{\ *\ 6.5}\end{array}

2. multiply

\begin{array}{l}\ \ \ \ 1\\\ \ \ \ 1\\\ \ \ \ 3.2\\\underline{\ x\ 6.5}\\\ \ \ \ \ \ 160\\\underline{+\ 1920}\\2080\end{array}

3. add the decimals and add the negitive sign

-20.8

Because ther is 2 decimals in the problem the decimal goes 2 spaces and because ther is a - sign it is negative.

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2. Construct Arguments Macy says that any
melamori03 [73]

Answer:Incorrect.

For example, two equations with same y intercept.

y = 2x + 3

y = 5x + 3

This system has only one solution.

Another example,

y = x + 7

y = x + 7

This system has infinitely many solutions.

So she is not correct because of the first example.

Step-by-step explanation:

4 0
3 years ago
Help me for a brainllest. A theater holds 2,680 seats. The lower level has 100 less than 2 times as many seats as the upper leve
Kaylis [27]

Answer: 1430

Step-by-step explanation: x + y + z = 2680  

x = 2z - 100  

y = 3z + 80  

x + y = 5z - 20  

6z - 20 = 2680  

z = 450  

y = 1430  

Solution:  

x = 800, y = 1430, z = 450

5 0
3 years ago
Read 2 more answers
A compact disc has an approximate Radius of 2 3/8 inches, what is the approximate area of a CD
professor190 [17]

Answer:

A≈12.57      

r Radius 2

Step-by-step explanation:

6 0
3 years ago
We have a study involving 5 different groups that each contain 9 participants (45 total). What two degrees of freedom would we r
vivado [14]

Answer:

Degree of freedoms F(4,40)

Step-by-step explanation:

Given:

There is a study which is involving 5 different groups that each contains 9 participants (totally 45)

The objective is to calculate the degree of freedoms

Formula used:

Numerator degree of freedom = k-1

denominator degree of freedom=N-K

Solution:

Numerator degree of freedom = k-1

denominator degree of freedom=N-K

Where,

K= number of groups = 5

N= total number of observations

which is given as follows,

N=45

Then,

Numerator degree of freedom = k-1

=5-1

=4

Denominator degree of freedom = N-K

=45-5

=40

Therefore,

Degree of freedoms, F(4,40)

7 0
2 years ago
im so confused and I'm ready to just throw my computer at the wall, how do you graph 3/5x + 9? i get the graphing the y intercep
Hunter-Best [27]

Answer:

start by placing a point on 9

Step-by-step explanation:

then use "rise over run" ( which is ri/ru) so you go up 3, then over 5. (hope this helps!)

8 0
3 years ago
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