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Varvara68 [4.7K]
3 years ago
5

Solve the equation 42=7r r=​

Mathematics
2 answers:
Juli2301 [7.4K]3 years ago
8 0

Answer: r=6

Step-by-step explanation:

Because if 42 equals 7 times r you just have to divide 42 by 7.

GuDViN [60]3 years ago
4 0

Answer:

6

Step-by-step explanation:

42=7r

Switch sides

7r=42

Divide both sides by 7

\frac{7r}{7} =\frac{42}{7}

Simplify

r=6

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The numbers of cars (c) in the parking lot increases when the parking fee (f) decrease. Write the correct equation for this scen
vodka [1.7K]
So when one goes up, the other goes down. This is an inverse equation.

An inverse equation looks like this: y = 1/x

In this case, when parking fee (f) decreases, cars (c) increase.
You know which side to put each variable on using the chart they gave you.
f         | c
20.00  15        (20.00 = x/15) x=300
30.00  10        (30.00 = x/10) x=300

So your equation in this case is f = 300/c
Knowing that, plug in the fee of 6.00

6 = 300/c   Multiply both sides by c.
6c = 300    Divide both sides by 6.
c = 50 cars

5 0
3 years ago
So just read yhe picture please ​
const2013 [10]

The correct answer is B). 6

Radius of inscribed circle of triangle HJK is 6 unit

Step-by-step explanation:

As shown in figure,

The triangle HJK has In-circle or inscribed circle of radius PL(or PM or PN)

Since, PL and PM is radius of same in-circle,

PL = PM

Given that PL=3x+4 and PM =6x-14

3x+4=6x-14

3x=18

x=6

Thus, The correct answer is B). 6

6 0
3 years ago
What is the value of x in the equation ln(x + 6) - ln(2x - 1) = 1 ? A-0.21 B. 0.74 C. 1.35 D. 1.97
uranmaximum [27]

Answer:

Answer is D. 1.97

I Hope this answer helped you.

3 0
2 years ago
Read 2 more answers
Find the length from a to c. Enter answer as a mixed number
Lilit [14]

a to C would be 4 3/4 + 2/3

3/4 + 2/3 = 9/12 + 8/12 = 17/12 = 1 5/12

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6 0
3 years ago
Expression equivalent to 3n + 2(1-4n)
yuradex [85]
You can first distribute the number into the parenthesis: 3n + 2 - 8n. Now, combine the like terms (n): -5n + 2. It can either be -5n + 2 or 2 - 5n.
7 0
2 years ago
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