3 years ago

How many students scored below 80?

Mathematics

2 answers:

Sholpan [36]3 years ago

8 0

The answer to this question is 11

sladkih [1.3K]3 years ago

6 0

Answer:

Step-by-step explanation:

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Given that f (x)=2x+5 and g(x)=x-7 solve for f (g (x)) when x=-3

Alexeev081 [22]

2(-3-7)+5= 2(-10)+5= -20 + 5= -15

-15 is your final answer

7 0

3 years ago

How do i write this problem

ratelena [41]

3-(s+4)
less than- subtract
sum- addition

since it said 3 less than the sum of a number and 4 that means you would have to add s and 4

5 0

2 years ago

Read 2 more answers

-3x minus 2 minus -6x = -4 minus -4x plus 12

DochEvi [55]

-3x-2-6x=-4-(-4x)+12

-9x-2=-16x+12

7x=14

x=2.

You probably got confused with the italicized part.

6 0

3 years ago

Simplify. Rewrite the expression in the form 4^n (4^6)(4^-8) =

stiks02 [169]

Answer:

4^-2

Step-by-step explanation:

The rules of exponents tell you ...

(a^b)(a^c) = a^(b+c)

This means ...

(4^6)(4^-8) = 4^(6-8) = 4^-2

7 0

3 years ago

A cone has a diameter of 18 in. and a height of 14 in.

Bond [772]

Cone's volume is $V = \frac{1}{3}Sh$
where S - surface area, h - height
Surface area = $\pi r^2$

r = 18/2=9
h= 14
π = 3.14
$V= \frac{1}{3} \pi r^2h= \frac{1}{3} *3.14*9^2*14= \frac{1}{3} *3.14*81*14=27*14*3.14$ [/tex]
$V = 1186.92$ $in.^3$

6 0

3 years ago