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mrs_skeptik [129]
4 years ago
15

Select the correct answer. Joshua sells a pack of pens for $3.15, which is 5 percent more than he pays for them. Which equation

will help find x, the amount he pays for a pack of pens? How many solutions will this equation have? A. x + 0.05x = 3.15, which has infinitely many solutions B. x + 0.5x = 3.15, which has one solution C. x + 0.05x = 3.15, which has one solution D. 0.05x = 3.15, which has no solution
Mathematics
2 answers:
Pepsi [2]4 years ago
5 0
The answer is b which has on solution
nikklg [1K]4 years ago
3 0

Answer:

x+0.05x=3.15   , which has one solution.

Step-by-step explanation:

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The difference of two numbers is 33. The sum of the first number and four times the second number is -2. What is the larger of t
defon

Answer:

The larger of the two is 44.67

Step-by-step explanation:

let the first number=x

let the second number=y

We can derive a system of equations using the mathematical statements

Their sum is 33:

x+y=33( call this equation 1)

Sum of first number and four times the second is -2:

x+4y=-2(call this equation 2)

Since the integer coefficients of x in both equations are the same we can quickly subtract one from the other to eliminate it

For this explanation, I choose to subtract equation 1 from 2

(x+4y=-2)-(x+y=33)=3y=-35

y=-35/3

Now plug in the value of y into any equation for that of x. Say we plug into equation 1

x+(-35/3)=33

x-35/3=33( multiply through by 3)

3x-35=99

3x=99+35

3x=134

x=134/3

Therefore,x=134/3 or 44.67 and y=-35/3 or -11.67

7 0
3 years ago
The product of two numbers is 192. what is the minimum value of the sum of the first value plus twice the second value
VARVARA [1.3K]
Let x and y be the two positive numbers. -  Their product is 192: x *  y  =  192   equation 1

-  the sum of the first plus twice the second is a minimum:  x + 2y

<span>From the first equation, y =  192 / x. 
Substitute that into the second equation:
</span>
 x + 2y = x + 2(<span>192/x ) = x + 384/x

</span>f(x) is minimum when f'(x) = 0 and f"(x) > 0 

f(x)= <span>x + 384/x
</span>
f(x) = 1-384/x^2 

<span>1-384  / x^2 =  0 

x^2-384 = 0 

x^ 2= 354
 x = radical  354    = 18.8  here i'm confused why the number is decimal
???/ 
</span>

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4 years ago
Which is the graph of parent function f(x)=2^x
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Option D is the correct answer

8 0
4 years ago
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Someone plz help me giving brainliest!
Arada [10]

Answer:

the estimate is : 39 7/32

the answer is :   46  9/35

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