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kykrilka [37]
3 years ago
14

Convert the expression (5x + 2)(x - 7) from factored form to standard form

Mathematics
2 answers:
tensa zangetsu [6.8K]3 years ago
8 0
We use the FOIL method here. First, Outer, Inner, and Last.

(5x)(x) = 5x^2

(5x)(-7) = -35x

(2)(x) = 2x

(2)(-7) = -14

5x^2 - 35x + 2x - 14

Now combine like terms.

5x^2 - 33x - 14.

This is the right answer because it is now in the form of ax^2 + bx + c
Firlakuza [10]3 years ago
8 0

Answer:

<h3>             (5x + 2)(x - 7) = 5x² - 33x - 14</h3>

Step-by-step explanation:

(5x+2)(x-7)=\\\\=(5x)(x)+(5x)(-7)+(2)(x)+(2)(-7)=\\\\=5x^2-35x+2x-14=\\\\=5x^2-33x-14

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A grade school class is nearing the final round of musical chairs. 5 students are left and there are 3 chairs available. How man
Sunny_sXe [5.5K]

Answer:

15

Step-by-step explanation:

its as simple as the numbers time each other

5x3=15

3 0
3 years ago
Which statement is true of every plane in three-dimensional space?
leonid [27]

Answer:

option A is correct.(Every plane must have three intercepts.)

Step-by-step explanation:

" Three-dimensional space (also: 3-space or, rarely, tri-dimensional space) is a geometric setting in which three values (called parameters) are required to determine the position of an element (i.e., point). This is the informal meaning of the term dimension "

The intercept form of the equation of plane in 3-D is given by:

\dfrac{x}{l}+\dfrac{y}{m}+\dfrac{z}{n}=1

Where l,m,n are intercepts of x,y,z axes and a plane respectively.

Hence, we require all the three intercepts of a every plane.

Hence, option A is correct.

4 0
3 years ago
Read 2 more answers
I need to know how to solve problem one. I tried it several different ways but I just can't seem to crack it. Can someone solve
grandymaker [24]
Either 100 ft or 50 ft
4 0
4 years ago
Please help explanation if possible
Svet_ta [14]

Answer:

18.84 feet.  let me know if you have ay other questions.

Step-by-step explanation:

The way to find the formula for circumference is kinda complicated so it is best to ust memorize the formula, which is 2πr.  or 2 times pi times the radius.  

Your problem gives you the formula, but instead of 2 and r in it you have d, which is the diameter.

The diameter of the circle is 2 times the radius, so that's why it is replaced.

the radius is the distance from the center fo the circle to one edge, and the diameter is the distance through the circle passing through its center.  so it's the center to one end plus the center to another end.  or r+r which is also 2r.

So d = 2r, so in this problem d =6 feet.

So now the formula πd = 3.14*6 feet = 18.84 feet

7 0
3 years ago
Which of the following polynomials is a binomial
Dima020 [189]
Hey there!

A binomial is a polynomial that contains two terms. Terms are separated from one another by mathematical symbols, such as +, –, and ×. A term can be a variable, a variable with a coefficient, a constant, or really any combination of coefficient, variable, and exponent that you can think of. For example...

(3x² – xy)

(x + 3)

(5x – 6y)

...are all binomials. 

Hope this helped you out! :-)
5 0
3 years ago
Read 2 more answers
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