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MrRissso [65]
3 years ago
10

Need all these tomorrow!!!!! thank you all soooooOOOOOOooOoOOooOOoO much!!!!!

Mathematics
1 answer:
nordsb [41]3 years ago
3 0
1.) 6% of 38 1% of 38 = 3.8 ( you just move the decimal placement over by one. 1% * 6 = 6% 3.8 * 6 = 6% 3.8 * 6 = 22.8 6% =22.8 2.) 5% of 90 90/5 = 5% 90/5 = 18 18 = 5% 3.) 15/5 = 9/x 15/5 = 3 3 = 9/x (nine divided by ? is three?....3!) 3 = 9/x(3) 3 = 9/3 3 = 3 x = 3 4.) 1/12 = .8/x Multiply each side by ten. 1/12 * 10 = 5/6 .8/x * 10 = 8/x 5/6 = 8/x Cross Multiply (switch the second numbers around) 5x = 6*8 Simplify 5x = 48 Divide both sides by 5 to get x by itself 5x/5 = x 48/5 = 9.6 *Whoo last problem lol* 5.) A three liter bottle costs $2.97 what is the unit rate. Well the unit is the object we're talking about, in this case a liter bottle. The unit rate is how much it costs or is per unit. Now that that's out of the way... 3L = 2.97 Like the other problems we want to get x by itself, so we'll divide by three) 3L/3 = L 2.97/3 = .99 L = .99 The Unit Rate is $0.99 per liter bottle. Hope this helped :)
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The volume V of a prism with base area B and height h is V=Bh. Solve the formula for h. Then use both formulas to find the heigh
GalinKa [24]

Answer:

Height is 5 ft

Step-by-step explanation:

<em><u>The prism is attached.</u></em>

<em><u></u></em>

The volume formula is:

V=Bh

Where

V is volume

B is area of base

h is height of prism

Now, solving for "h", gives us:

V=Bh\\h=\frac{V}{B}

Looking at the prism, it is given:

V = 175

B = 35

Substituting, we get the height:

h=\frac{V}{B}\\h=\frac{175}{35}\\h=5

The height is 5 ft

4 0
3 years ago
How to do this question
Bas_tet [7]

Answer:

x

Step-by-step explanation:

factor out both equations and then cancel any of the common factors. You should be left with 4x/4, which simplified is x

7 0
3 years ago
Element X is a radioactive isotope such that every 26 years, its mass decreases by half. Given that the initial mass of a sample
SSSSS [86.1K]

Answer:

It will take 15.029 years for element X to reach mass of 260 grams

Step-by-step explanation:

The half life period of radioactive element X is 26 years

The initial mass of radioactive element X is 260 grams

Elapsed time = half life * log (beginning amount /ending amount)/log 2

Substituting the given values, we get

Elapsed time = 26 * log (390/260)/log 2

=  15.209 years

8 0
3 years ago
1
julia-pushkina [17]

Answer:

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Step-by-step explanation:

8 0
3 years ago
Solve for x with a degree of 30 &amp; side of 300ft
tankabanditka [31]

Answer:

x = 100√3


Step-by-step explanation:

tan(30º) = x/300

x = 300 tan(30º)

x = 300/√3

x = 100√3

3 0
4 years ago
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