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Feliz [49]
3 years ago
9

Please answer the question as best as you can :)

Mathematics
1 answer:
cupoosta [38]3 years ago
7 0
Y=mx+b and since the slope is -2 then m=-2

if we plug in 1 and -7 we get the equation -7=-2(1)+b

then we just solve for b which would end up being b=-5

the slope intercept is y=-2x-5
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Any ideas on how to find the value of 'x' on either 13 or 16? Anything helps!
Artemon [7]
(x+5)/4=1/2
first get rid of the fraction
multiply both sides by 4
x+5=2
subtract 5
x=-3

(2x+1)/(4x-1)=2/3
get rid of the fractions,
multiply both sdies by (4x-1)(3)
(2x+1)(3)=(2)(4x-1)
distribute
6x+3=8x-2
subtract 6x form both sdies
3=2x-2
add 2
5=2x
divide by 2
5/2=x
4 0
3 years ago
Solve the system of equations. y= x + 17, y= 3x+1
Lemur [1.5K]

Answer:

x=8, y=25. As a point it's (8,25)

Step-by-step explanation:

here is the system:

y=x+17

y=3x+1

notice how both of the equations equal y. Therefore, we can substitute one expression as y in the other expression. (It'll equal y=y, which is a true statement)

so it'll be:

3x+1=x+17

subtract 1 from both sides

3x=x+16

subtract x from both sides

2x=16

divide by 2

x=8

now, substitute 8 as x into one of the equations and solve for y

let's take the first one for example

y=8+17

y=25

so the answer is x=8, y=25. As a point it's (8,25)

Hope this helps!

7 0
3 years ago
Help please. thank you
tatyana61 [14]
I think it D cause 30(cos(30x)+14=-16
Your dividing by 30
your 180 (which is degrees) is
radians. As the cosine function is periodic with period 2 we get

6 0
3 years ago
Read 2 more answers
Why is it important to know the different properties of three-dimensional figures
IgorLugansk [536]

A two-dimensional shape has length and width. A three-dimensional solid shape also has depth. Three-dimensional shapes, by their nature, have an inside and an outside, separated by a surface. All physical items, things you can touch, are three-dimensional.



4 0
3 years ago
The base of a triangle is 13cm and its height is 5cm. what is the area of the triangle
mario62 [17]

Answer:

32.5cm

Step-by-step explanation:

Using the formula A=h_b*b/2

We get 5*13/2=32.5

3 0
3 years ago
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