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dolphi86 [110]
2 years ago
15

I will mark you brainiest if you can answer this

Mathematics
1 answer:
elena55 [62]2 years ago
7 0

Answer:

9 buses

12 cars

(Step-by-step explanation:

x=bus x+y=21 --> y=-x+21

30x+4y=318 --> y= -30x/4 + 318/4

y=car

x= 9

y=12

:) hope this help

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8 times the difference between a number and 6 ls equal to 4 times the number.
Sveta_85 [38]

Answer:

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Step-by-step explanation:

4 0
3 years ago
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Find the measure of &lt;4.<br> {<br> 44<br> 158°<br> {<br> 44 = [?]
VLD [36.1K]

Answer:

<4 = 22

Step-by-step explanation:

<4 = x

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4 0
2 years ago
Find the coordinates of the point (x,y,z) on the planez=4x+3y+1 which is closest to the origin.
Nataliya [291]
Given plane &Pi; : f(x,y,z) = 4x+3y-z = -1
Need to find point P on &Pi;  that is closest to the origin O=(0,0,0).

Solution:
First step: check if O is on the plane &Pi; : f(0,0,0)=0 &ne; -1 => O is not on &Pi;
Next:
We know that the required point must lie on the normal vector <4,3,-1> passing through the origin, i.e. 
P=(0,0,0)+k<4,3,-1> = (4k,3k,-k)
For P to lie on plane &Pi; , it must satisfy
4(4k)+3(3k)-(-k)=-1
Solving for k
k=-1/26
=>
Point P is (4k,3k,-k) = (-4/26, -3/26, 1/26) = (-2/13, -3/26, 1/26)
because P is on the normal vector originating from the origin, and it satisfies the equation of plane &Pi;
Answer: P(-2/13, -3/26, 1/26) is the point on &Pi; closest to the origin.

8 0
2 years ago
What is the equation of a line that passes through points (0, 4) and (-4, -8)?
Fed [463]
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y-intercept so b = 4

equation: y = 3x + 4

answer: <span>C. y = 3x + 4</span>
6 0
3 years ago
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yawa3891 [41]
The correct answer would be t=1/3
4 0
3 years ago
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