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lisov135 [29]
3 years ago
11

Hard math problems that equal 8

Mathematics
1 answer:
kogti [31]3 years ago
3 0
<span>4x+7x+19=3 x 12 - 4+(5 x 16) - 5 </span><span>

7x+3-2x=4x+2 x 5 + 1


</span>
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Which of the following are incorrect expressions for slope?
vfiekz [6]

Answer:

Option B and C are correct.

\frac{x_2-x_1}{y_2-y_1}

\frac{run}{rise} are the expression incorrect for slope

Step-by-step explanation:

Slope is defined as the change in the dependent variable  relative to the change in the dependent variable

or the ratio of the horizontal changes to vertical changes between any two points on the graph of the line.

The vertical changes between any two points is rise

The horizontal changes between any two points is run.

Formula for slope is given by:

For any two points (x_1, y_1) and (x_2, y_2)

then slope is:

\text{Slope} =\frac{rise}{run}= \frac{y_2-y_1}{x_2-x_1}

or we can write this as:

Δy = y_2-y_1

Δx = x_2-x_1

⇒\text{Slope} = \frac{\triangle y}{\triangle x}

Therefore, the expression which are incorrect for slope  are;

\frac{x_2-x_1}{y_2-y_1}

\frac{run}{rise}

8 0
3 years ago
Read 2 more answers
How do i factor the expressions 4w-16?
igomit [66]
The answer to this would be 4(w-4)
7 0
3 years ago
I NEED THIS ANSWERED AS SOON AS POSSIBLE! How much material is needed to construct a triangular tent that is 6 feet wide, 4 feet
Elena-2011 [213]

To figure out this problem, you need to find the surface area of a triangular prism.

a=5ft

b=5ft

c=6ft

h=8ft

A= (a*h) + (b*h) + (c*h) + 1/2√-a⁴ + 2(a*b)² + 2(a*c) - b⁴ + 2(b*c) - c⁴

=152 square feet

5 0
4 years ago
A large company put out an advertisement in a magazine for a job opening. The first day the magazine was published the company g
Evgen [1.6K]

Answer:

16 responses

Step-by-step explanation:

we know that

A geometric sequence, is a sequence of numbers where each term after the first is found by multiplying the previous one by a fixed, non-zero number called the common ratio.

a_n=r^{n-1}

where

a_n----> n^{th} term of the sequence

r ---> is the common ratio

a ---> the first term of the sequence

a=50\\r=100\%-10\%=90\%=90/100=0.90

substitute

a_n=50(0.90)^{n-1}

For n=12

substitute

a_n=50(0.90)^{12-1}=16

3 0
4 years ago
Write a real-world problem that could be represented by the expression 3(23). Then explain how you could solve the problem menta
Natalija [7]
3(23) really means 3*23, or just 3 multiplied by 23.  For example: "Jana has 23 dollars.  Her friend John has $23, and his friend Jacob also has 23 dollars.  How much money do they have all together?"  To solve this problem mentally, you could break 3*23 into two numbers you're familiar with multiplying, like 20 and 3, and then add the numbers together.  For example: 3*20 + 3*3.  3*20=60, 3*3=9, and 60+9=69.  So, 3*23=69.
5 0
4 years ago
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