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2 years ago

HELP I DONT UNDERSTAND

Mathematics

1 answer:

klemol [59]2 years ago

4 0

Answer:

A -4,4, A 2,-1, B -4 1/2, 1 1/2. C 2 1/2, 2 1/2, 1,1.

Step-by-step explanation:

count the caculations

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YOU BE THE TEACHER Your friend finds the sum.

il63 [147K]

Answer: My friend is correct.

Step-by-step explanation:

<em>Adding a negative is the same as subtracting a positive.</em>

$9 + (-6) = 3$

$9 - 6 = 3$

$3 = 3$

Hope this helps! Have a great day!

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2 years ago

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3.8*10 to the 9th power divided by 4*10 to the 2nd power

user100 [1]

Answer:

$9.5\times 10^{6}$

Step-by-step explanation:

1. Divide the coefficients and the exponentials separately

$\dfrac{3.8 \times 10^{9}}{4 \times 10^{2}} = \dfrac{3.8}{4} \times \dfrac{10^{9}}{10^{2}}$

2. Divide the coefficients

$\dfrac{3.8}{4} = 0.95$

3. Divide the exponentials

Subtract the exponent in the denominator from the exponent in the numerator.

$\dfrac{10^{9}}{10^{2}} = 10^{(9 - 2)} = 10 ^{7}$

4. Re-join the new coefficient and the new exponential

$\dfrac{3.8 \times 10^{9}}{4 \times 10^{2}} = 0.95 \times 10^{7}$

5. Put the new number into standard form

The number before the power of 10 must be greater than or equal to one and less than 10.

Multiply the answer by 10/10.

$(0.95 \times 10^{7}) \times \dfrac{10}{10} = (0.95\times10) \times \dfrac{10^{7}}{10} = \mathbf{9.5\times 10^{6}}$

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2 years ago

Shelby buys a balance beam priced at $735.40.If the sales tax is

amm1812

Answer:

the sales tax is $73.54

Step-by-step explanation:

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What is the scale factor for this dilation?

AnnyKZ [126]

K= 2

The square is doubled so the scale factor (k) is 2

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The picture below shows a container that Tim uses to freeze water.

melomori [17]

20 cylindrical container tim required

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