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2 years ago

11

Us the expression (8x + 2) + (- 9x + 7)

1 answer:

malfutka [58]2 years ago

7 0

Answer:

8x2=16 9x7=63

63+16=79

Step-by-step explanation:

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Need a little help!!!

telo118 [61]

The answer is 615.44

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1 year ago

Water leaks from tanker at a rate of 8L/h. How much water will leak from the tank in: a: 2 Day. b: 2 Weeks

Paha777 [63]

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2 years ago

CosA×cos2A+sinA×sin2A=cos (2A-A)

Aleksandr-060686 [28]

Answer:

csc

A

, as desired!

Step-by-step explanation:

cos

2

A

sin

A

+

sin

2

A

cos

A

,

=

cos

2

A

cos

A

+

sin

2

A

sin

A

sin

A

cos

A

,

=

cos

(

2

A

−

A

)

sin

A

cos

A

,

=

cos

A

sin

A

cos

A

,

=

1

sin

A

,

=

csc

A

, as desired!

7 0

2 years ago

A bakery offers a sale price of $3.45 for 4 muffins. What is the price per dozen?

Vlad [161]

Answer:

Cost of 4 muffins = $3.45

Cost of 12 muffins = (3 sets of x 4 muffins = 12)

Cost of 3 sets of muffins = $3.45 x3 = $10.35

Step-by-step explanation:

3 0

2 years ago

sand falls from an overhead bin and accumulates in a conical pile with a radius that is always four times its height. suppose th

blagie [28]

Answer:

$\frac{dv}{dt} =7239.168 cm/sec$

Step-by-step explanation:

From the question we are told that:

Rate $\frac{dh}{dt}=1cm$

Height $h=12cm$

Radius $r=4h$

Generally the equation for Volume of Cone is mathematically given by

$V=\frac{1}{3}\pi r^2h$

$V=\frac{1}{3}\pi (4h)^2h$

Differentiating

$\frac{dv}{dt} =\frac{16}{3}\pi3h^2\frac{dh}{dt}$

$\frac{dv}{dt} =\frac{16}{3}*3.142*3*12^2*1$

$\frac{dv}{dt} =7239.168 cm/sec$

7 0

2 years ago