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Afina-wow [57]
2 years ago
7

Kira received a S90 gift card for a coffee store. She used it in buying some coffee that cost $7.28 per pound. After buying the

coffee, she had 553.60 left on
her card. How many pounds of coffee did she buy?
Mathematics
1 answer:
kolbaska11 [484]2 years ago
3 0

Answer:

N/A

Step-by-step explanation:

This question is not valid because the gift card is only 90 pounds. You states that the Coffee she bought was 553 dollars. This means she will have negative profit, therefore this question is not states correctly.

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Solve the system by substitution.<br> y = 8x<br> y=10x – 4<br> Submit Answer<br> How
Goshia [24]

Answer:

(2,16)

Step-by-step explanation:

y=8x-----------(i)

y= 10x-4---------(ii)

Substituting the value of y=8x in equation (ii)

8x=10x-4

8x-10x=-4

-2x= -4

x=2

Now, substituting the value of x= 2 in equation (i)

y=8x=8(2)=16

Solution of the system is (2,16)

6 0
3 years ago
Lim<br> x-&gt;infinity (1+1/n)
FrozenT [24]

Answer:

^{ \lim}_{n \to \infty} (1+\frac{1}{n})=1

Step-by-step explanation:

We want to evaluate the following limit.


^{ \lim}_{n \to \infty} (1+\frac{1}{n})


We need to recall that, limit of a sum is the sum of the limit.


So we need to find each individual limit and add them up.

^{ \lim}_{n \to \infty} (1+\frac{1}{n})=^{ \lim}_{n \to \infty} (1) +^{ \lim}_{n \to \infty} \frac{1}{n}


Recall that, as n\rightarrow \infty,\frac{1}{n} \rightarrow 0 and the limit of a constant, gives the same constant value.



This implies that,


^{ \lim}_{n \to \infty} (1+\frac{1}{n})= 1 +0


This gives us,

^{ \lim}_{n \to \infty} (1+\frac{1}{n})= 1


The correct answer is D



5 0
3 years ago
Find the sum and express it in simplest form. (-y + 5a - 4) + (-3y - a - 5)
netineya [11]
(-y + 5a - 4) + (3y - a - 5) is simplified to 2y + 4a - 11
3 0
3 years ago
Read 2 more answers
1) The astronaut's sense of imbalance in a space flight is due to the rotation of a device in which he or she feels a fictitious
max2010maxim [7]

Answer:

n = 0.38 rotation per second

Step-by-step explanation:

The device rotates according to the mathematical equation :

n=\dfrac{g^{0.5}}{2\pi r^{0.5}} ...(1)

Where n is the rotational speed and is measured in rotations per second (s).

r is radius of the circulator and is measured in meters (m).

We need to find the rotational speed when radius is 1.7 m. Put r = 1.7 m in equation (1).

n=\dfrac{(9.8)^{0.5}}{2\pi \times (1.7)^{0.5}}\\\\=0.38\ \text{rotations per second}

Hence, the rotational speed is 0.38 rotation per second.

8 0
2 years ago
The sum of two numbers is 35. Their difference is 3. Find the numbers
IgorLugansk [536]

Answer:

19 and 16

Step-by-step explanation:

Let x and y be the two numbers

x+y = 35

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x+y = 35

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---------------

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Divide by 2

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Solve for y

x-y = 3

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Subtract 19 from each side

19-19 -y = 3-19

-y = -16

y =16

4 0
3 years ago
Read 2 more answers
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