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2 years ago

Plz help with science!

Mathematics

1 answer:

inna [77]2 years ago

4 0

For number thirteen I believe it is Alkali metals,and btw this should be in science not math.

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3-3x6+2= what is the right answer?

Kamila [148]

Use PEMDAS:-

3 - 3 × 6 + 2 = ?
3 - 18 + 2 = ?
-15 + 2 =
-13

3 - 3 × 6 + 2 = -13.

8 0

3 years ago

Which of the following numbers has the commas in the correct positions

Genrish500 [490]

BBB because it has commas after the right units

6 0

3 years ago

I NEED HELP!! please show all work

PtichkaEL [24]

Take the logarithm of both sides. The base of the logarithm doesn't matter.

$4^{5x} = 3^{x-2}$

$\implies \log 4^{5x} = \log 3^{x-2}$

Drop the exponents:

$\implies 5x \log 4 = (x-2) \log 3$

Expand the right side:

$\implies 5x \log 4 = x \log 3 - 2 \log 3$

Move the terms containing x to the left side and factor out x :

$\implies 5x \log 4 - x \log 3 = - 2 \log 3$

$\implies x (5 \log 4 - \log 3) = - 2 \log 3$

Solve for x by dividing boths ides by 5 log(4) - log(3) :

$\implies \boxed{x = -\dfrac{ 2 \log 3 }{ 5 \log 4 - \log 3 }}$

You can stop there, or continue simplifying the solution by using properties of logarithms:

$\implies x = -\dfrac{ \log 3^2 }{ \log 4^5 - \log 3 }$

$\implies x = -\dfrac{ \log 9 }{ \log 1024 - \log 3 }$

$\implies \boxed{x = -\dfrac{ \log 9 }{ \log \frac{1024}3 }}$

You can condense the solution further using the change-of-base identity,

$\implies \boxed{x = -\log_{\frac{1024}3}9}$

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2 years ago

1. Glenda is buying trees to plant in her yard. One tree that normally would cost $350 is on sale for 60% off.

butalik [34]

Answer:

350-60

Hope this helps. Have a great day:)

3 0

2 years ago

Read 2 more answers

Please help with this math question thanks!!!

melisa1 [442]

The surface area is
A1=7.5*1.5*2=22.5 ft2 top and bottom view
A2=3*1.5*2=9 ft2 laterals view
A3=(7.5*1.5+2.5*1.5)*2=30 ft2 front and rear view

At=22.5+9+30=61.5 ft2
the answer is 61.5 ft2

5 0

2 years ago

Read 2 more answers