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3 years ago

SOLVE ASAP: mass of 42.5 and a volume of 5.4 cm3 what is its density

Mathematics

2 answers:

Volgvan3 years ago

7 0

I think it is..................

Maslowich3 years ago

3 0

Answer:

7,870,370

give me brainliest

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16^10 x 16^4 need the work

Alex787 [66]

Answer:

$16^{10}*16^{4} \\= 16^{14}$

Property used: $a^{m} * a^{n} = a^{m+n}$

3 0

3 years ago

I need help on number 9

lisov135 [29]

Complement angles, sum is equal 90

Give one angle = 70 to find other: 90 - 70 = 20

Answer

Complement of angle with the measure of 70 degrees is 20 degrees

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3 years ago

A rectangle initially has width 7 meters and length 10 meters and is expanding so that the area increases at a rate of 8 square

Tems11 [23]

Answer:

The length of rectangular is increasing at a rate 0.5714 meters per hour.

Step-by-step explanation:

We are given the following in the question:

Initial dimensions of rectangular box:

Length,l = 10 m

Width,w = 7 m

$\dfrac{dA}{dt} = 8\text{ square meters per hour}\\\\\dfrac{dw}{dt} = 40\text{ centimeters per hour} =0.4\text{ meters per hour}$

We have to find the rate of increase of length.

Area of rectangle =

$A = l\times w$

Differentiating we get,

$\displaystyle\frac{dA}{dt} = \frac{dl}{dt}w + \frac{dw}{dt}l$

Putting values, we get,

$8 = \dfrac{dl}{dt}(7) + (0.4)(10)\\\\\dfrac{dl}{dt}(7) = 8 -4\\\\\dfrac{dl}{dt} \approx 0.5714$

Thus, the length of rectangular is increasing at a rate 0.5714 meters per hour.

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3 years ago

Solve the system of equations y=2x-3 and y=x^2-3

KatRina [158]

I have attached some answers in the photos below hope you find them useful

7 0

2 years ago

Read 2 more answers

1. Solve the following expression if b=8. 10 b2(2=squared)

irakobra [83]

Answer:

640

Step-by-step explanation:

In order of operations, do exponents before multiplying.

8 squared= 64

64 x 10=640

8 0

3 years ago