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4 years ago

What is the solution to this equation?

Mathematics

2 answers:

wlad13 [49]4 years ago

8 0

Answer:

$\huge{ \fbox{ \sf{x = 21}}}$

Option C is correct.

Step-by-step explanation:

$\underline{ \underline{ \mathfrak{Let's \: solve}}} :$

$\bigstar{ \sf{ \: \: x - 4 = 17}}$

$\text{Step \: 1} : \sf{Move \: 4 \: to \: right \: hand \: side \: and \: change \: its \: sign}$

$\longrightarrow{ \sf{x = 17 + 4}}$

$\text{Step \: 2} : \sf{Add \: the \: numbers}$

$\longrightarrow{ \sf{x = 21}}$

The value of x is 21

Hope I helped!

Best regards! :D

~ $\text{TheAnimeGirl}$

ycow [4]4 years ago

3 0

Answer:

D. x = 21

Step-by-step explanation:

x - 4= 17

Step 1: Add 4 to both sides

x - 4= 17

+4 +4

x = 21

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The sum of two numbers is 842. The difference is 314. Find the numbers.

Readme [11.4K]

Let's call the two numbers x and y.

We know that x+y = 842 and that x-y = 314

Now that we have two equations, we can solve using substitution by solving for one variable in one of the equations, and plugging that in for the same variable in the other equation.

Lets solve for x in the second equation to get:

x = 314 + y

Now plug in 314+y for x in the first equation:

(314 + y) + y = 842

Combine like terms:

314 + 2y = 842

Now solve for y:

2y = 842-314

2y = 528

y = 264

Finally, plug 264 in for y to solve for x:

x + 264 = 842

x = 842-264

x = 578

The two numbers are 578 and 264.

4 0

3 years ago

Suppose the value of a car depreciates 8% every year. To the nearest dollar, what will a car that cost $23,995 be worth after 5

Vanyuwa [196]

Answer:

The car will worth $15815 after 5 years.

Step-by-step explanation:

The formula is: $A=P(1+r)^t$ , where P = Initial cost, A = Final cost, r = Rate of change in cost per year and t = Number of years.

Here, $P= 23995, t= 5$

and $r= 8\%=0.08$

As here the value of the car depreciates every year, so we need to plug the value of $r$ as negative. So, $r=-0.08$

Now plugging the above values into the formula, we will get.....

$A=23995(1-0.08)^5\\ \\ A=23995(0.92)^5\\ \\ A=15814.6611... \approx 15815$

(Rounded to the nearest dollar)

So, the car will worth $15815 after 5 years.

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3 years ago

basketball player Chauncey Billups of the Detroit Pistons makes free throw shots 88% of the time. find the probability that he m

bogdanovich [222]

we are given

basketball player Chauncey Billups of the Detroit Pistons makes free throw shots 88% of the time

so, probability of making shot is

=88%

so, p=0.88

To find the probability of missing first shot and making the second shot

so, we can use formula

probability = p(1-p)

now, we can plug values

we get

$probability=0.88(1-0.88)$

So, the probability that he misses his first shot and makes the second is 0.1056........Answer

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3 years ago

How could the sum of cubes formula be use to factor x^3y^3+34

professor190 [17]

Sum of cubes: a^3 + b^3 = (a+b)(a^2 - ab + b^2)

Sum of cubes: x^3*y^3 + 34, or (xy)^3 + (∛34)^3

This factors into (xy + ∛34)*( [xy]^2 - xy∛34 + (∛34)^2 )

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3 years ago

A board game for $29.95 at 8% sales tax

son4ous [18]

$27.55

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29.95- 2.396 = 27.55

3 0

4 years ago

Read 2 more answers