Eric downloads a coupon online which is 10% OFF ON one item. And goes shopping and buys a digital camera for $95 and an extra battery for $15.99. (1) (WHAT IS THE TOTAL COST IF THE COUPON IS APPLIED TO THE EXTRA BATTERY).........................(2)(TO WHICH ITEM SHOULD ERIC APPLY THE DISCOUNT)...................

Answers

Answer 1

Answer: 1.) Answer=$109.39

$95+$15.99*0.90=
$95+14.39=$109.39

2.) Answer= The digital camera

Digital Camera=$95*0.1=$9.50 savings

Batteries=15.99*0.1=$1.60 savings

You save more money if you use the coupon on the Digital Camera.

Answer 2

Answer:

Answer:

SHHESSHHH

Step-by-step explanation:

sorry... for putting deez nu...

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Maria gathered the data in the table. She finds the line of best fit to be y = 2.78x – 4.4.What is the residual value when x = 4?

–6.72
–0.58
0.58
6.72

Answers

The data in the table is not shown here but here is the formula for the residual
residual = observed value - predicted value

To get the predicted value, you simply use the best fit equation:
y = 2.78x - 4.4

Substituting 4:
y = 2.78(4) - 4.4
y = 6.72

This value is subtracted from the observed value to get the residual.

The correct answer would be C.0.58

You plug 4 into the line of best fit and get 6.72. This is your predicted value, but the residual is the difference between the actual value and predicted. So you subtract: 7.3-6.72=0.58.

Can someone help me whit this?!?

Answers

The answer would be 40 because if you take the the line in which angle b is in it would be 180 and then we would subtract 140 which gives you 40 , good luck ! :)

Popcorn machine is 3/4 of its height. What's the lengh of the machine

Answers

I'm assuming the length is 3/4 its height and you want an equation so the equation would be Length=3/4height or also L=3/4H and if there was a value for H let us say the number 28 the equation would be L=3/4*28. Three quarters of 28 would be 21 therefore 21=3/4*28.

Two lines, A and B, are represented by the equations given below:Line A: x + y = 2
Line B: 2x + y = 4
Which statement is true about the solution to the set of equations?
There are infinitely many solutions.
There are two solutions.
There is one solution.
There is no solution.

Answers

If you would like to know which statement is true about the solution to the set of equations, you can calculate this using the following steps:

x + y = 2 ... y = 2 - x
2x + y = 4
_________________
2x + (2 - x) = 4
2x - x = 4 - 2
x = 2

y = 2 - x = 2 - 2 = 0

(x, y) = (2, 0)

The correct result would be: There is one solution.

Answer:

Step-by-step explanation:

Suppose the surface area of a sphere is 324π square units. What is the volume, in cubic units, of this sphereA) 9π
B) 81π
C) 324π
D) 972π

Answers

Answer:

Option D is correct

$972 \pi$ is the volume, in cubic units, of this sphere

Step-by-step explanation:

Surface area of sphere(S) and volume of sphere (V) is given by:

$S = 4 \pi r^2$

$V = (4)/(3) \pi r^3$ .....[1]

As per the statement:

Suppose the surface area of a sphere is 324π square units

⇒S = 324π square units

then;

$324 \pi = 4 \pi r^2$

Divide both side by $4 \pi$ we have;

$81 = r^2$

$r^2= 81$

⇒ $r = √(81) = 9$ units

We have to find the volume, in cubic units, of this sphere.

Substitute the given value in [1] we have;

$V = (4)/(3) \pi \cdot 9^3 = (4)/(3) \pi \cdot 729$

Simplify:

$V = 4 \cdot \pi \cdot 243 = 972 \pi$ cubic units

Therefore, $972 \pi$ is the volume, in cubic units, of this sphere

D would be the answer

Multiply and simplify
(5a + 2bc) (5a - 2bc)

Answers

One of the tools that's great to keep in your algebra toolbox for the rest of your life is:

The product of (sum of 2 things) (difference of 2 things) = (difference in their squares).

For example: (x + y) (x - y) = (x² - y²)

When you're trying to factor algebra expressions, it's always good to keep your
eyes open for the difference of two squares, and remember that it's going to be
(sum) x (difference) of the things that they're squares of.

Here you have (a sum) x (a difference) of the same 2 things:

(5a + 2bc) (5a - 2bc)

You can multiply them out, or just use the little tool above:

(5a)² = 25a²

(2bc)² = 4b²c²

So (their sum) x (their difference) is (25a² - 4b²c²) .

⇒ (a + b)(a - b) = a² - b²

Multiply and simplify :

$(5a + 2bc) (5a - 2bc) \n =25a^2+10abc-10abc-4bc^2 \n =25a^2-4b^2c^2$

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