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Rama09 [41]
3 years ago
14

Help me please i dont get it

Mathematics
2 answers:
Nana76 [90]3 years ago
7 0

Answer:

b

Step-by-step explanation:

b

rusak2 [61]3 years ago
7 0

Answer:6/12

Step-by-step explanation: you find the common denominator (12 in this case) and multiply 3 by 4 to get that,then you multiply one to get 4.And finally you can add (terrible explanation)

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Does anyone know this?
marta [7]
4 square roots  80^ x
4 0
3 years ago
Benson purchased a $1,800 certificate of deposit that earns simple annual interest. At the end of 1 year, the certificate was wo
Makovka662 [10]

Answer:

<h2><u> 3.2%</u></h2>

Step-by-step explanation:

Step one:

given data

principal P= $1800

time t= 1 year

Final amount A=1857.60

rate r=?

Step two:

we are expected to solve for the rate, let assume the investment is a simple interest type.

A=P(1+rt)

solve for r we can substitute our data

1857.60=1800(1+r*1)

1857.60=1800+1800r

1857.60-1800=1800r

57.6=1800r

r=57.6/1800

r=0.032

0.032*100= 3.2%

<u>This shows that the rate is 3.2%</u>

5 0
3 years ago
NO LINKS AND NO ANSWERING WHAT YOU DON'T KNOW!!! THIS IS NOT A TEST OR ASSESSMENT!!!
Reptile [31]

Answer:

Part 1)

1) Sylvia' process was incorrect. In her last step, when she multiplied 0.88 by 10, she also need to divide exponent by 10.

2) Dylan is perfectly correct.

3) Ethan's process was also incorrect. Instead of subtracting the exponents, he added them.

Part 2)

Only Skyler's approach was incorrect. When Skyler acquired (3⁶)ˣ = 9, he made the error of setting the exponent on the left to the value on the right.

Step-by-step explanation:

Part 1)

We want to simplify the expression:

\displaystyle \frac{3.61\times 10^{-11}}{4.1\times 10^7}

We can divide. Recall that <em>xᵃ </em>/ <em>x</em>ᵇ = <em>x</em>ᵃ ⁻ ᵇ. Hence:

\displaystyle =0.88\times 10^{-11-7}=0.88\times 10^{-18}

In scientific notation, the coefficient is always between 1 or 10.

So, we can multiply 0.88 by 10. To keep the equality, we need to divide 10⁻¹⁸ by 10. Hence:

\displaystyle =0.88(10)\times \frac{10^{-18}}{10}

(You can see that the 10s can cancel out, giving us our original expression.)

Simplify. Thus:

\displaystyle \frac{3.61\times 10^{-11}}{4.1\times 10^7} = 8.8\times 10^{-19}

Therefore, as we can see:

1) Sylvia' process was incorrect. In her last step, when she multiplied 0.88 by 10, she also need to divide exponent by 10.

2) Dylan is perfectly correct.

3) Ethan's process was also incorrect. Instead of subtracting the exponents, he added them.

Part 2)

Reviewing their work, we can see that only Skyler's approach was incorrect.

729 is indeed 3⁶. However, when Skyler acquired (3⁶)ˣ = 9, he made the error of setting the exponent on the left to the value on the right.

Both Robert and Kevin are correct, having set each exponent equal to each other after their bases are equivalent and solving for <em>x</em>.

7 0
2 years ago
a rectangular prism has a volumume of 120 cm3. it is 5 cmand its whdth is 8 cm . what is the prism's height
EleoNora [17]
Here, we know that volume = length * width * height, or V=lwh. You can algebraically manipulate this to solve for h. h= \frac{V}{lw}. Plugging in the known information, you get h= \frac{120}{5*8} = 3 \ cm.
5 0
3 years ago
Find the missing length. the triangles are similar.
stich3 [128]
70 + 78 + 91 = 239
239 - 42 - 36 = 161
8 0
3 years ago
Read 2 more answers
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