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8090 [49]
4 years ago
8

Ernesto tried to determine the solution for the system of equations using substitution. His work is shown below.

Mathematics
2 answers:
AysviL [449]4 years ago
7 0
Step 3. he forgot to multiply 3 and 7.
storchak [24]4 years ago
3 0
Step 3 he forgot to multiply 3 by 7

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Which of the following demonstrates how the 20 is calculated using the<br> combination pattern?
ZanzabumX [31]

Answer:

D

Step-by-step explanation:

The diagram shows Pascal's triangle. Pascal's triangle is a triangular array of the binomial coefficients.

The entry in the n^{th} row (start counting rows from 0) and k^{th} column (start counting columns from 0) of Pascal's triangle is denoted by

C^n_k=\left(\begin{array}{c}n\\ k\end{array}\right)

Coefficient 20 stands in 6th row, then n = 6 and in 3rd column, so k = 3.

Hence,

20=C^6_3=\left(\begin{array}{c}6\\ 3\end{array}\right)=\dfrac{6!}{3!(6-3)!}

4 0
4 years ago
(08.03 MC) The dot plot below shows the hourly rate of some babysitters in a city: Which statement best describes the shape of t
aleksley [76]

Answer:

A. It is symmetric and has no gaps.

Step-by-step explanation:

Given

See attachment for dot plot

Required

Select the true statement

From the attached plot, we can see that

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  2. There is no gap between each dataset (from 4 to 7)

Since (1) all bell shaped distribution are symmetric and (2) there is no gap between the dataset, <em>then (a) is correct.</em>

5 0
3 years ago
I WILL BE GIVING YOU 5 STAR AND BRAINLIST, PLEASE HELP! You have to look at the circle and then the statement, then determine if
Elenna [48]

Answer ill ask a friend

i can try asking a friend to help you cause i suck at thisStep-by-step explanation:

4 0
3 years ago
I need help quick please
kenny6666 [7]
Volume is Length x width x height divided by 3. You have the length and the width. which equals 24. (6x4). The volume that is present is 72... the last thing you do in the equation is divide by three so multiply 72 by 3 and get 216. This is the LxWxH. Like I said before you have the L and the W, which is 24. You would divide 24 from 216. The Height is 9cm.
6 0
3 years ago
Read 2 more answers
A function is shown.<br> f (x) = 3x2 + 4x + 1
VLD [36.1K]

Answer:

f(x)=4x+7

Step-by-step explanation:

f(x)=4x+7

so that is the answer to the questions

5 0
3 years ago
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