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Montano1993 [528]
2 years ago
7

Karen and Kristen were in a competition to see who could walk the

Mathematics
1 answer:
Gelneren [198K]2 years ago
5 0

Answer:

They each walked the same amount if you plug 7 into each of their expressions

Step-by-step explanation:

Karen walked 3(7) - 4 or 17 miles

Kristen walked 2(7) + 3 or 17 miles

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Is Addison has 15 fewer pieces of candy than Ronny does a expression or equation? and why
Anna35 [415]

Let the Addison's candy count be a and Ronny's be r.

Then a = r - 15.  This is an equation.  

If you had a second equation, you could replace a with the expression (r - 15), which in itself is not an equation.

4 0
3 years ago
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Cary is 7 years older than Dan. In 7 years the sum of their ages will be 79. Find the age of each man now.
Vilka [71]

Answer:

Dan is 29. Cary is 36.

Step-by-step explanation:

Let Dan's age now be D.

Let Cary's age now be C.

"Cary is 7 years older than Dan."

C = D + 7

"In 7 years the sum of their ages will be 79. "

In 7 years, the ages of Dan and Cary will be D + 7 and C + 7, respectively.

D + 7 + C + 7 = 79

C + D + 14 = 79

C + D = 65

C = D + 7

The last two equations in bold above form a system of equations. Since the second equation is already solved for C, we use the substitution method.

D + 7 + D = 65

2D + 7 = 65

2D = 58

D = 29

C = D + 7

C = 29 + 7

C = 36

Answer: Dan is 29. Cary is 36.

3 0
3 years ago
Building a is 160160 feet shorter than building
Serjik [45]
I assume the heights are 160 ft and 1480 ft.

The two heights are unknown, so we will use variable h to help solve the problem.
The shorter building, building A, has height h.
Since building A is shorter by 160 ft, then building B is taller by 160 ft, so the height of building B is h + 160.

Now we add our two heights to find the total height.

h + h + 160 is the total height.
We can write it as 2h + 160

We are told the total height is 1480 ft, so we let 2h + 160 equal 1480, and we have an equation.

2h + 160 = 1480

Subtract 160 from both sides

2h = 1320

Divide both sides by 2

h = 660

h + 160 = 820

Building A measures 660 ft.
building B measures 820 ft.
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2 years ago
What is 9-14 lolol.
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Lolz lolz is lolz lolz 782
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2 years ago
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Which function is even? Check all that apply.
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im pretty sure its

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(B) y=sec x

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2 years ago
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