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Sonbull [250]
3 years ago
14

Please Help I have tried and can not get the correct answer

Mathematics
1 answer:
Nikolay [14]3 years ago
3 0

Answer:

(-3, 0) and (1, 0)

(0, 4)

Step-by-step explanation:

x-intercept is the point where y = 0.

y-intercept is the point where x = 0.

or points ...

f(x) = y = -4×|x + 1| + 8

let's start with the y-intercept (x = 0)

y = -4×1 + 8 = -4 + 8 = 4

the y-intercept point (only 1 point) is (0, 4).

for x = 0 the absolute value function contains 0+1. and that is always +1.

the x-intercept(s) :

0 = -4×|x + 1| + 8 (dividing by -4)

0 = |x + 1| - 2

|x + 1| = 2

because of the absolute value we have 2 possibilities :

+(x + 1) = 2

x + 1 = 2

x = 1

and

-(x + 1) = 2

-x - 1 = 2

-x = 3

x = -3

so the points of x-intercept are (-3, 0) and (1, 0)

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alukav5142 [94]

Answer: There are 4 students in the group.

Step-by-step explanation:

Let the number of students in the group be n

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Similarly,

If one of them scored 3 points less, their average score would be 78 points.

So, our equation (2) will be

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So, from equation (1) and (2) we get:

81n-9=\sum x=78n+3\\\\81n-9=78n+3\\\\81n-78n=3+9\\\\3n=12\\\\n=\frac{12}{3}\\\\n=4

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8 0
4 years ago
Solve for h.
Luden [163]
Solving for h means we write the equation in such a way that h is isolated from other variables. It is done as follows: 

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Hope this answers the question. Have a nice day. 
4 0
3 years ago
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Alisiya [41]

Answer:

x = -18

Step-by-step explanation:

Please, share the instructions when you post a problem.  I can only assume here that you want to solve the given equation for x.

Multiplying out this equation, we get:

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7 0
4 years ago
The gcd of two numbers is 7 and their lcm is 140. If one of the numbers is 20 find the other number ​
sweet [91]

Answer:

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Step-by-step explanation:

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6 0
4 years ago
Read 2 more answers
Paul is making banana bread. The number of cups of bananas he uses is proportional to the number of loaves of bread. Paul uses 1
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The equation that best represents the relationship between the number of loaves of bread which is denoted by b and the number of cups of bananas which is denoted by c is c = 2 1/4b.

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