3 years ago

The ratio of students to laptops in a school is 3:2. If there are 1200 students,how many laptops are there

Mathematics

1 answer:

galina1969 [7]3 years ago

5 0

1200/3=400
400x2=800
Answer=800 laptops

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aivan3 [116]

Again using the Pythagorean Theorem:

h^2=x^2+y^2, where h is the hypotenuse of a right triangle and x and y are the side lengths. You are given that the hypotenuse is 34 ft and the base side is 16ft. Let h=34, x=16, and y=height, then you have:

34^2=16^2+y^2

y^2=34^2-16^2

y^2=1156-256

y^2=900

y=√900

y=30 ft

So the ladder will reach a spot 30 feet high on the building.

8 0

3 years ago

Write the equation of the linear function for which f(0)=3 and f^-1(0)=-2

Semmy [17]

We know that if f(a)=b then $f^{-1}(b)=a$
and
if $f^{-1}(a)=b$ then f(b)=a
so

since $f^{-1}(0)=-2$ therefor, f(-2)=0

we have 2 points, (-2,0) and (0,3)

we can use slope intercept form
y=mx+b
m=slope
b=y intercept

we have when x=0, y=3, that is the y intercept
y=mx+3

substitute the other point
(-2,0)
x=-2, y=0
0=-2m+3
-3=-2m
divide both sides by -2
$\frac{3}{2}=m$

the equation is
$y=\frac{3}{2}x+3$
or
3x-2y=-6 in standard form

7 0

3 years ago

Please help me it's done in 4 mins I beg you

lesya692 [45]

Answer:

the slope rise/run = 4/6