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inysia [295]
4 years ago
9

The sum of 4 times a number and 5 equals 9. can someone please help!!! iwillchosebrainliestifcorect....!!!

Mathematics
1 answer:
inysia [295]4 years ago
6 0

Answer:

1

Step-by-step explanation:

let the number be x

4 times = 4x

the sum of 4 times a number and 5 equals to 9

4x + 5 = 9

4x = 9 - 5

4x = 4

divide both sides by 4

x = 1

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scoundrel [369]

Answer:51 Groups

Step-by-step explanation:

60 students + 42 students = 102

102 divided by 2 = 51 Total groups.

5 0
4 years ago
Graph the inequality -n_<-5
katrin [286]

Answer:

See below

Step-by-step explanation:

This is just the same as n≤5, which would look like the attached number line.

5 0
3 years ago
What is the inverse of the function f(x) = 2x + 1?
soldier1979 [14.2K]

Answer: The inverse of the linear function f(x)=2x+1 is f^(-1) (x) = (1/2)x-1/2


Solution

f(x)=2x+1

y=f(x)

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y-1=2x+1-1

y-1=2x

Multiplying both sides of the equation by 1/2:

(1/2)(y-1)=(1/2)2x

(1/2)y-1/2=x

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Changing "x" by "f^(-1) (x)" and "y" by "x":

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8 0
3 years ago
Another quadratic formula and the discriminant problem that I am stuck on. the answer is {2, 1/2}
Alina [70]

Answer:

See explanation

Step-by-step explanation:

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Hope this helps!

7 0
3 years ago
Use the graph below to fill in the blank with the correct number:
Alik [6]
Let
A(-3,0) \\ B(-2,2) \\ C(0,1) \\ D(1,-2)

we know that

Point A
A(-3,0) \\ for x=-3 \\ f(-3)=0

Point B
B(-2,2) \\ for x=-2 \\ f(-2)=2

Point C
C(0,1) \\ for x=0 \\ f(0)=1

Point D
D(1,-2) \\ for x=1 \\ f(1)=-2

therefore

the answer is
f(0)=1
4 0
3 years ago
Read 2 more answers
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