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agasfer [191]
3 years ago
5

To find an equation for the line with slope -3 that passes through the point ( 4, 3 ), Dana wrote the following steps. Is he cor

rect? Explain
Mathematics
1 answer:
Makovka662 [10]3 years ago
3 0

Answer:

<h3>y=-3x+15</h3>

Step-by-step explanation:

m=-3\\\\(4,3)=(x_1,y_1)\\\\

Substitute values into point slope form

y-y_1=m(x-x_1)\\\\y -3=-3(x -4)\\\\y-3=-3x +12\\\\y=-3x+12+3\\\\y=-3x+15

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An appliance store decreases the price of a​ 19-in. television set 16​% to a sale price of $535.92. What was the original​ price
Llana [10]
621.67. First of all you want to convert the 16% to a .16 so you can multiply it. From then you can multiply 535.92 times .16 to find the amount of money that was taken off of the original price. The number you get from the previous equation you have to add to 535.92 to final original price.
7 0
4 years ago
Read 2 more answers
2 more than 919 998??
Pepsi [2]
2 More than 919 998 is equal to 920 000...I.e Nine hundred and twenty thousand.. It is simply the sum of 2 and 919 998.
8 0
3 years ago
Cost of a CD: $23.50<br> Markup: 63%<br> Discount: 50%
Vedmedyk [2.9K]
Alright this equation has two big steps. First we need to find the price after it was marked up, then we need to take that number and find the discounted price.
To find the cost after a percent of it was added, we just need to multiply the two together and add.
=
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23.50
⋅
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Ok now that we have the number after the price increase, we now need to find the final answer after a discount of
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%
(do the exact same idea as above but switch the sign)
=
$
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−
(
$
38.31
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(
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100
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=
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7 0
2 years ago
What is the 2nd term of the linear sequence below?<br>2,5,8, 11, 14, ...​
Dimas [21]

Answer:

5

Step-by-step explanation:

the second number

Please mark as brainliest

6 0
4 years ago
The equation y 16t 2 18t 405 describes the height in feet of a ball thrown downward at 18 feet per second from a height of 405 f
kumpel [21]

Answer:

Ball hits the ground after 4.5 sec

Step-by-step explanation:

Let a -1, so that the leading coefficient is positive

So our quadratic is

-1 \times (16t^2 +18t -405)

The key coefficients of two binomial variables can be 1 and 16, or 2 and 8, or 4 and 4, for the leading coefficient of 16.

Yet they can't actually be 4 and 4 because the linear (x) term coefficient has to be a multiple of 4, which it isn't and leading coefficients 1 and 16 on the binomial factors is not likely.

So, 2 and 8 taken as the leading coefficients of  two binomial factors.

For constant  405, possible factorizations are (81\times 5, 27 \times 15, 9 \times 45).

(16t^2 +18t -405) = (8t + 45) (2t - 9)

Taking first factor, thus we find  negative value for given time t. But  second time equivalent to zero gives the value of 4.5 for t

Thus ball hits the ground after 4.5 sec

.

3 0
4 years ago
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