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2 years ago

What is the correct value of x in the equation 5x -5 = 0?

Mathematics

1 answer:

djverab [1.8K]2 years ago

5 0

Answer:

x= 1

Step-by-step explanation:

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Parker drove a total distance of 4 and 1 over 2 miles during the months of June and July. If Parker only drove 1 over 8 of a mil

never [62]

Answer: 4 and 1 over 2 ÷ 1 over 8

Step-by-step explanation:

Given that : Total distance drove by Parker =4 and 1 over 2 miles= $4\frac{1}{2}$ miles

Distance drove by Parker each day = 1 over 8 mile= $\frac{1}{8}$ mile

To find the total number of days , we need to divide the total distance by the distance drove by him in each day.

Thus, the number of days he went driving=4 and 1 over 2 ÷ 1 over 8

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2 years ago

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Find the original price of a pair of shoes if the sale price is $40 after a %20% discount.

borishaifa [10]

That would be around $200. Because you would take 40 devide by .2 and get 200.

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2 years ago

Solve the following recurrence relation: <br> <img src="https://tex.z-dn.net/?f=A_%7Bn%7D%3Da_%7Bn-1%7D%2Bn%3B%20a_%7B1%7D%20%3D

-Dominant- [34]

By iteratively substituting, we have

$a_n = a_{n-1} + n$

$a_{n-1} = a_{n-2} + (n - 1) \implies a_n = a_{n-2} + n + (n - 1)$

$a_{n-2} = a_{n-3} + (n - 2) \implies a_n = a_{n-3} + n + (n - 1) + (n - 2)$

and the pattern continues down to the first term $a_1=0$ ,

$a_n = a_{n - (n - 1)} + n + (n - 1) + (n - 2) + \cdots + (n - (n - 2))$

$\implies a_n = a_1 + \displaystyle \sum_{k=0}^{n-2} (n - k)$

$\implies a_n = \displaystyle n \sum_{k=0}^{n-2} 1 - \sum_{k=0}^{n-2} k$

Recall the formulas

$\displaystyle \sum_{n=1}^N 1 = N$

$\displaystyle \sum_{n=1}^N n = \frac{N(N+1)}2$

It follows that

$a_n = n (n - 2) - \dfrac{(n-2)(n-1)}2$

$\implies a_n = \dfrac12 n^2 + \dfrac12 n - 1$

$\implies \boxed{a_n = \dfrac{(n+2)(n-1)}2}$

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2 years ago

If m∠D + m∠E = 180°, then ∠D and ∠E are classified as what kind of angles?

Archy [21]

The other person is literally wrong. The answer is D. Supplementary because two angles that add up to 180 are supplementary angles.

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2 years ago

How to do this question

Alenkinab [10]

Answer:

10 tacos costs $15.00

Step-by-step explanation:

I like to use ratio's to solve this type of problem. I will put cost over number of tacos.

$6.00 x dollars

-------- = --------------

4 tacos 10 tacos

Using cross products

6 * 10 = 4 * x

60 = 4x

Divide each side by 4

60/4 = 4x/4

15 =x

10 tacos costs $15.00

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3 years ago

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What is the correct value of x in the equation 5x -5 = 0?​

What is the correct value of x in the equation 5x -5 = 0?