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Elanso [62]
3 years ago
7

Layla bought a pencil for $1.25, a pen for $2.25, and three erasers for $0.45 each. She gave the cashier $10 for the items. How

much change did Layla get back?
Mathematics
2 answers:
vladimir1956 [14]3 years ago
7 0

Answer:

5.15

Step-by-step explanation:

.45 x 3 = 1.35

1.35 + 1.25 = 2.6

2.25 + 2.6 = 4.85

$10 - 4.85 = 5.15

snow_lady [41]3 years ago
4 0

Answer:

1.25+2.25+(o.45 x 3)

=6.95

10-6.95

= got back $3.05

Step-by-step explanation:

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The original amount owed on a loan is known as
beks73 [17]

Answer:

The original amount owned on a loan is known as principal.

7 0
4 years ago
Which function below is the inverse of f(x)= 7x-1/2
lianna [129]

f(x)=7x-\dfrac{1}{2}\to y=7x-\dfrac{1}{2}\\\\\text{we change x to y and y to x}\\\\x=7y-\dfrac{1}{2}\\\\\text{solve for y}\\\\7y-\dfrac{1}{2}=x\ \ \ \ |+\dfrac{1}{2}\\\\7y=x+\dfrac{1}{2}\ \ \ \ \ |:7\\\\\boxed{y=\dfrac{1}{7}x+\dfrac{1}{14}}\\\\Answer:\ \boxed{f^{-1}(x)=\dfrac{1}{7}x+\dfrac{1}{14}}

8 0
3 years ago
Jason jumped of a cliff into the ocean . His height as a function off time could be models as h(t)=16tsquared + 16t + 480 where
Karo-lina-s [1.5K]

I see that you are in high school, and I'm hoping that you've been introduced
to differential calculus, because I don't know how to answer this question without
using it.

We're told that Jason's height above the water is  <em>H(t) = -16t² + 16t + 480 .</em>
We can observe many things from this equation:
-- Up is the positive direction; down is the negative direction.
-- The acceleration of gravity is 32 ft/sec² .
-- Jason jumps upward from the cliff, at 16 ft/sec .
-- The cliff is 480-ft above the water.
(This tells us why the question is only concerned with his maximum height,
and then it ends ... 480-ft is one serious cliff, and what happens after the
peak of his arc is too gruesome to contemplate.)

In any case, his vertical velocity is the first derivative, with respect to time,
of his height above the water.

         V = -32 t + 16

At the peak of his arc, where gravity takes over, his velocity changes from
upward to downward, and it's momentarily zero.

                                           0 = -32t + 16

Add  32t  to each side:    32t = 16

Divide each side by  32:    <em>  t = 1/2 second</em>

His height at that instant is     H(0.5) = -16(0.5)² + 16(0.5) + 480 =

                                           <em>4-ft above the cliff,  484-ft above the water</em>,

and then he begins falling from that altitude.

The duration of his dive is      484 = 16 t²
                                                   t = √(484/16) = <em>5.5 seconds</em>

and he hits the water at      V = a t = (32) x (5.5) = 176 ft/sec = <em>exactly 120 mph </em>

Jason was good man ... a good student, and always kind to everyone he met.
He will certainly be missed.


5 0
3 years ago
Offering a lot of points for this
Andrews [41]

Answer:

6x - 1

Step-by-step explanation:

Add 3x and 3x.

6x − 1

ídk hope this helps... ( ̄▽ ̄)ノ

6 0
3 years ago
Read 2 more answers
The figure shown is created by joining two rectangles.
Vesnalui [34]
First cut off for now the rectangle at the top. Ok so now do 75X15 = 1,125. Now we know that's the area if we cut off the top. Now do just the top 10X25=250. Now add 1,125+250= 1,375. is the area
5 0
3 years ago
Read 2 more answers
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