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finlep [7]
4 years ago
9

I need help with this...who can help me?​

Mathematics
1 answer:
mars1129 [50]4 years ago
4 0

Answer:

12

Step-by-step explanation:

3 x 4

3 is how far the shape goes to the left.

4 is how far it goes to the bottom

you multiply the two numbers to cover the area

You might be interested in
Can someone help me?​
EastWind [94]

Answer:

5,184

Step-by-step explanation:

multiply each unit by 6 and then you end up with 12, 24, and 18. Then you multiply all these answer by each other and get 5,184.

4 0
3 years ago
Read 2 more answers
the equation 5x+4y=20 represents a linear function in two variables. Identify the slope, x-intercept and y-intercept of this lin
dexar [7]
Here are the steps
put it into y=mx+b 4y=-5x+20
to isolate y divide both sides by  y=-5/4+5
to find the xi 
xi is when y=0 so plug it in to the equation 4y=-5x+20 4(0)=-5x+20
0=-5x+20 subtract 20 from each side -20=-5x the negatives cancel out 20=5x
to isolate x divide each side by 5 x=20/5
20/5=4
Answers:
m=-5/4 
yi=5
xi=4








3 0
3 years ago
Find parametric equations for the tangent line to the curve with the given parametric equations at the specified point. Illustra
Rainbow [258]

Answer:

x = t

y = 1 - t

z = 2t

Step-by-step explanation:

Given

x=t

y=e^{-t}

z=2t-t^2

(0, 1, 0)

The vector equation is given as:

r(t) = (x,y,z)

Substitute values for x, y and z

r(t) = (t,\ e^{-t},\ 2t - t^2)

Differentiate:

r'(t) = (1,\ -e^{-t},\ 2 - 2t)

The parametric value that corresponds to (0, 1, 0) is:

t = 0

Substitute 0 for t in r'(t)

r'(t) = (1,\ -e^{-t},\ 2 - 2t)

r'(0) = (1,\ -e^{-0},\ 2 - 2*0)

r'(0) = (1,\ -1,\ 2 - 0)

r'(0) = (1,\ -1,\ 2)

The tangent line passes through (0, 1, 0) and the tangent line is parallel to r'(0)

It should be noted that:

The equation of a line through position vector a and parallel to vector v is given as:

r(t) = a + tv

Such that:

a = (0,1,0) and v = r'(0) = (1,-1,2)

The equation becomes:

r(t) = (0,1,0) + t(1,-1,2)

r(t) = (0,1,0) + (t,-t,2t)

r(t) = (0+t,1-t,0+2t)

r(t) = (t,1-t,2t)

By comparison:

r(t) = (x,y,z) and r(t) = (t,1-t,2t)

The parametric equations for the tangent line are:

x = t

y = 1 - t

z = 2t

7 0
3 years ago
On Sunday, Antonio spent a total of 3 1/4 hours driving and 1 3/4 hours gardening. How much longer did he spend driving than gar
sergeinik [125]

3 1/4 = 13/4

1 3/4 = 7/4

13/4-7/4= 6/4

6/4= 1 1/2 hours more

7 0
3 years ago
The ratio of an object's weight on Earth to its weight on Neptune is 5 : 7. How much would a person who weighs 150 pounds on Ear
shutvik [7]
5:7
In english, what this is saying is that for every 5 units of weight on Earth, is 7 units of weight on Neptune. 
Given this, it would make sense that your weight on Neptune, say Y, equals your weight on Earth, say X, divided by five, then multiplied by seven.
Y = (X/5) * 7
Y = (150/5) * 7 = 210
5 0
3 years ago
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