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VARVARA [1.3K]
2 years ago
12

4. Simplify -6(3 – 5s + 12t – 2u)

Mathematics
1 answer:
Elan Coil [88]2 years ago
8 0
-18 +30s -72t +12u is the answer
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Kim bought a hat. in California. The hat cost $15 before the 8% sales tax was applied. How much did Kim pay for the hat after ta
gizmo_the_mogwai [7]

Answer:

$16.2

Step-by-step explanation:

15 x .08 [wonder how i got .08? 8% = 0.8]

= 1.2

here's where most people mess up, they usually forget to add the tax to the original cost.

15 + 1.2=

$16.2

7 0
2 years ago
The volume of a cone is represented by the formula V = 1 T?n. If the volume of a cone is 30rt and the height is 2.5, what is the
Airida [17]

Answer:

radius is 3.38cm

Step-by-step explanation:

Note: the volume of a cone is given as

V= 1/3 \pi r^2 h

Step one:

Given Information

volume= 30cm^3

height= 2.5cm

Required

The radius of the cone

Step two:

substituting our data into the expression for the volume of a cone we can then solve for the radius r

30=1/3 *3.142*r^2 * 2.5\\\\30=1/3*7.855r^2\\\\30=2.62r^2\\\\

divide both sides by 2.62

30/2.62= r^2\\\\11.45= r^2\\\\r=\sqrt{11.45} \\\\r=3.38cm

7 0
2 years ago
How do you do this and what’s the answer ?
Dmitrij [34]

Answer:

A. y=2

x+y=2.5

b.  x=2 or 5

y=2 or 5

I don't know which on equals 2 and which equals 5, but 5 and 2 are the answers

Step-by-step explanation:

a. 2x0.5=1

b. 2+5=7 and 2x5=10

7 0
2 years ago
What equation, in point-slope form, matches the graphed line shown? Question 3 options: y−5=−23(x+9) y−2=−34(x−6) y+6=45(x+3) y−
ziro4ka [17]

Step-by-step explanation:

the line passes through (6, 2) and (10, -1),

the slope =

(-1-2)/(10-6) = -3/4

the equation :

y-2 = -3/4(x -6)

7 0
3 years ago
Which of the following is the graph of y = cos(2x)?
irinina [24]

Answer:

Select the one which meets the following characteristics.

Step-by-step explanation:

y = cos(2x)

Characteristics:

Mean line at y = 0

Amplitude = 1

Period = 360/2 = 180° or pi radians

i.e one complete cos cycle is 0 to 180, next is 180 to 360 and so on

Range : from -1 to 1

5 0
3 years ago
Read 2 more answers
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