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maks197457 [2]
3 years ago
9

Question 10 Multiple Choice Worth 4 points)

Mathematics
1 answer:
Lady_Fox [76]3 years ago
4 0
A is your answer bc the -2 directly affects the x value and since its negative it will move left
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For what values of m does the graph of y = 3x^2+ 7x + m have two x-intercepts?
qaws [65]

Answer:

m < 49/12

Step-by-step explanation:

The portion of the quadratic formula under the square root sign is the discriminant.

If the discriminant is > 0 then there are two real roots.

b² -4ac > 0

-----------------------------

7² - 4(3)m > 0

49 - 12m > 0

Subtract 49 from both sides

-12m > -49

Divide both sides by -12

(when multiplying or dividing by a negative the inequality must be reversed)

m < 49/12

8 0
3 years ago
Part A: Xavier needs to collect at least 120 cans for a food drive to earn community service credit. He has already collected 64
Sergeu [11.5K]

Answer:

A

Step-by-step explanation:

He needs to collect at least 120 so if c is what he must still collect

64 +c must be greater than or equal to 120

3 0
2 years ago
The results of a poll show that the percent of people who want a new restaurant is in the interval (62%, 88%). There are 109,482
uranmaximum [27]

Answer:

(67879,96344)

Step-by-step explanation:

I took the test

8 0
3 years ago
Read 2 more answers
Match the fraction/decimal with the percentage<br><br> MARKING BRIANIEST!
const2013 [10]

Yoink:

hey imma yoink your points  and not answer the question ok?

Jk:

jk, number 1 is b

number 2 is a

number 3 is d

and number 4 is c

7 0
3 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
3 years ago
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