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jekas [21]
3 years ago
12

35 POINTS. I need help! Please!

Mathematics
1 answer:
topjm [15]3 years ago
7 0
There is no solution  for the first one

if you eliminate y   you get 2 equations
-13x - 13z = -25
-13x - 13x = -15    

- there is no solution to theses

a23  means the element in the second  row and the 3rd column

so its -5 
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I dont know how to do this one :(((
MaRussiya [10]

Answer:

y=1.8

Step-by-step explanation:

You can compare the equation to slope intercept form where b = mid-line

f(x)=5.6 sin(1.2x-2.3)+1.8

y=mx+b

5.6 ⇒ m

sin(1.2x-2.3) ⇒ x

1.8 ⇒ b

~Hope this helps!~

3 0
3 years ago
What is the slope of the line in the graph?<br> A. -4/3<br> B. -3/4<br> C. 3/4<br> D. 4/3
Naily [24]

To find the slope you have to use this formula:

\frac{y2-y1}{x2-x1}

First chose any 2 random points from the graph, im gonna chose (0,1) and (-4,4). It doesn't matter which one is the x1 or x2, what matter is they have to be in the same order, you can't have (-4,4) as a (x1,y2), That's wrong.

\frac{(1)-(4)}{4-0}

= -3/4

5 0
3 years ago
PLEASE HELP ITS A TIMED TEST!!!
nexus9112 [7]

Answer:

First you need to set up an equation y = mx + b. m would be the monthly charge and b would be the one time fee. x represents the number of months.

To solve for the number of months with a total price of 240 we substitute 240 in for y and solve for x.

240 = 25x + 40

subtract 40 from each side

200= 25x

divide by 25

8 = x

8 months

10 + 7r = 45

7r = 35

r = 5

5 milesStep-by-step explanation:

8 0
3 years ago
The total deposit and rent collected by an apartment manager for one resident are given by the equation t = 350 + 700m, where m
Nat2105 [25]

B.......just took the test

5 0
3 years ago
BRAINLIEST FOR FIRST TO HELP +20 pts
motikmotik
A. Create a segment EF between two points. 
3 0
3 years ago
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