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Serga [27]
3 years ago
12

demarco wrote two correct variable expressions to represent the phrase “the product of a number and 7”. which variable expressio

ns could demarco have written? select each correct answer. n/7 n⋅7 7n 7/n
Mathematics
2 answers:
makkiz [27]3 years ago
4 0

Answer:

B) n.7

C) 7n

Step-by-step explanation:

The given verbal expression is " the product of a number and 7"

Let's take "n" be a number.

Now let's convert phrase to algebraic expression.

Product means multiplication. "." represents the multiplication.

So, the product of a number (n) and 7 is 7.n

Therefore, the answer is B) n.7 and C)7n

Norma-Jean [14]3 years ago
3 0
The question is asking to choose among the following choices that states the expressions that could be represented in the said phrase and in my further understanding, I would say that the answer would be n.7, I hope you are satisfied with my answer and feel free to ask for more 
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If y=-3x + 2, find x when y= -13 *
Arturiano [62]

Answer:

x = 5

Step-by-step explanation:

You know what "y" equals, so you just need to insert the value into the equation, then solve for "x".

-13 = -3x + 2

-13 - 2 = -3x

-15 = -3x

5 = x

x = 5

7 0
3 years ago
PLZ HELP ASAP FEATURES OF A CIRLE FROM EXPANDED EQUATION
Lana71 [14]
First we need to convert the given equation to standard form, only then we can find the center and radius of the circle.

x^{2} + y^{2} +18x+14y+105=0 \\  \\ 
 x^{2} +18x+ y^{2}+14y=-105 \\  \\ 
 x^{2} +2(x)(9)+ y^{2}+2(y)(7)=-105 \\  \\ 
x^{2} +2(x)(9)+ 9^{2} + [y^{2}+2(y)(7)+7^{2}]  =-105+9^{2}+7^{2}  \\  \\ 
 (x+9)^{2}+ (y+7)^{2}=25  


The standard equation of circle is:

(x-a)^{2} + (y-b)^{2}= r^{2}

with center (a,b) and radius = r

Comparing our equation to above equation, we can write

Center of circle is (-9, -7) and radius of the given circle is 5 
8 0
3 years ago
Write the slope-intercept form of the equation of the line through the given point with the given slope.
SIZIF [17.4K]
Slope itnercept is y=mx+b

ok, let's start with point slope form
y-y1=m(x-x1)
a point on the line is (x1,y1) and the slope is m
so given point (-3,4) and slope -3/4
y-4=-3/4(x-(-3))
y-4=-3/4(x+3)
distribute to solve for y
y-4=(-3/4)x-9/4
add 4 to both sides
y=(-3/4)x-9/4+4
y=(-3/4)x-9/4+16/4
y=(-3/4)x+7/4
5 0
3 years ago
Give the appropriate theorem or postulate that can
vitfil [10]

Answer:

The right answer is A. AA Postulate

4 0
2 years ago
Determine the slope of the following graph.
evablogger [386]

Answer:

2/1 or 2

Step-by-step explanation:

if you find a spot were the line is line up with the boxes in the graph like at (-2,0) up 2 and right one you will see the line is lined up again and since slope is rise/run its 2/1 or 2

4 0
3 years ago
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