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Ivenika [448]
3 years ago
12

What is the slope of the line that passes through (-2, 7) and (4, 9)? user: which of the following represents 3x - 5y 10 = 0 wri

tten in slope-intercept form? user: the cost to mail a package is $7 for the first 2 pounds and 30 cents for each additional ounce. which of the following functions represents the cost to mail a package if x is the number of ounces over 2 pounds?
a. ��(x ) = 7 0.3x
b. ��(x ) = 14 0.3x
c. ��(x ) = 0.3(x 2)
Mathematics
2 answers:
lord [1]3 years ago
8 0
F(x) = 14 + 0.3x.... hope this helps 
patriot [66]3 years ago
3 0
The slope is (9-7)(4-(-2)) = 2/6 = 1/3;

<span> user: which of the following represents 3x - 5y 10 = 0 written in slope-intercept form???
</span>
The correct anwer for the last question is b).

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How do I solve these questions?
stich3 [128]
Y = -4x - 5.....(0,?)...so we know x = 0, so sub in 0 for x and solve for y
y = -4(0) - 5
y = -5....so one point is (0,-5)
do the same for the other points and u get (1,-9) , (-1,-1)

y = -4x - 5.....slope is -4 and ur y int (where ur line crosses the y axes) is (0,-5).
to find the x int (where the line crosses the x axes), sub in 0 for y and solve for x.
0 = -4x - 5
4x = -5
x = -5/4.....or - 1 1/4(for graphing purposes)...x int is (-5/4,0)
so plot all ur points and connect the dots
============================
4x + 9y = 0...(-9,?)..so x = -9..so sub in -9 for x and solve for y
4(-9) + 9y = 0
-36 + 9y = 0
9y = 36
y = 36/9
y = 4...so ur point is (-9,4)

do the same for the others and ur points are : (0,0) , (9,-4)

4x + 9y = 0
9y = -4x....so ur slope is -4 and ur y int is (0,0)
ur x int is : (0,0)....so basically u have a line going through the origin (0,0)
plot all ur points and connect the dots
6 0
3 years ago
Pls help !! Basically you have to put two math equations with one sentence! Will give brainliest
Andrews [41]

Answer:

2.

2x+3y=45

x+y=16

3.

x+y=383

4x+6y=2034

4.

y=2x+11

x+y=53

5.

2x+5y=16

5x+2y=19

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
3x +4 and =-23 x=3and +1
Hunter-Best [27]

Answer:

Im not sure if you're asking us to solve the function operation but if you are heres what I got:

3x + 4 and = -23 =

x = 3 =

1 =

Sorry if this is wrong

6 0
3 years ago
Nick is going to the skating ring once in 12 days. Victoria is going to the skating ring once in 20 days. Boris is going to the
Maurinko [17]
Nick : 12, 24, 36,48,60,72,..... 180

Victoria: 20, 40, 60,80....180

Boris: 18,36,54,.....180

they will be together on day 180


good luck
5 0
3 years ago
Graph this inequality on the number line.<br><br> x&lt;1.8
brilliants [131]

Answer:

Since we know it is less than, x will be on the left of 1.8. We also know it is not less than or equal to, so the circle is open.

8 0
2 years ago
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