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3 years ago

Explain how to multiply two numbers with different signs.

1 answer:

5 0

<h2>Answer:</h2><h2>When you multiply 2 Integers with the same signs,the result is always positive.</h2><h2>Just multiply the absolute values and make the answer positive.</h2><h2>When you multiply 2 integers with different integers the result is always negative. </h2><h2>Just multiply the absolute values and make the answer negative. </h2>

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Whats 6 2/5 added by 2 3/10. Make sure ypur answer is fully reduced.

Sladkaya [172]

Answer:

8 7/10 or 87/10

Step-by-step explanation:

7 0

3 years ago

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Belle bought 18 seeds in order to plant an herb garden for her grandma. Of the seeds she bought, 10 were parsley seeds.

Harrizon [31]

Answer:

0.3431

Step-by-step explanation:

Here, it can work well to consider the seeds from the group of 18 that are NOT selected to be part of the group of 15 that are planted.

There are 18C3 = 816 ways to choose 3 seeds from 18 NOT to plant.

We are interested in the number of ways exactly one of the 10 parsley seeds can be chosen NOT to plant. For each of the 10C1 = 10 ways we can ignore exactly 1 parsley seed, there are also 8C2 = 28 ways to ignore two non-parsley seeds from the 8 that are non-parsley seeds.

That is, there are 10×28 = 280 ways to choose to ignore 1 parsley seed and 2 non-parsley seeds.

So, the probability of interest is 280/816 ≈ 0.3431.

___

The notation nCk is used to represent the expression n!/(k!(n-k)!), the number of ways k objects can be chosen from a group of n. It can be pronounced "n choose k".

6 0

3 years ago

The sum of 9 times a number and 5 is 3.

poizon [28]

Answer:

9x + 5 = 3

Step-by-step explanation:

Hope this helps.

3 0

3 years ago

∫c<br> x sin y ds, C is the line segment from (0, 1) to (3, 5)

Mnenie [13.5K]

Parameterize the line segment $C$ by

$\mathbf r(t)=\langle x(t),y(t)\rangle=(1-t)\langle0,1\rangle+t\langle3,5\rangle=\langle3t,1+4t\rangle$

where $t\in[0,1]$ . Then

$\mathrm ds=\|\mathbf r'(t)\|\,\mathrm dt$
$\mathrm ds=\|\langle3,4\rangle\|\,\mathrm dt$
$\mathrm ds=5\,\mathrm dt$

So the integral is

$\displaystyle\int_Cx\sin y\,\mathrm ds=5\int_0^1x(t)\sin y(t)\,\mathrm dt$
$=\displaystyle5\int_0^13t\sin(1+4t)\,\mathrm dt$
$=\dfrac{15}{16}(\sin5-\sin-4\cos5)\approx-2.7516$

3 0

3 years ago

What is 2(x-4)+4(45x+6)

Ray Of Light [21]

Answer:

182x + 16

General Formulas and Concepts:

<u>Pre-Algebra</u>

Distributive Property

<u>Algebra I</u>

Combining Like Terms

Step-by-step explanation:

<u>Step 1: Define</u>

2(x - 4) + 4(45x + 6)

<u>Step 2: Simplify</u>

Distribute: 2x - 8 + 180x + 24
Combine like terms (x): 182x - 8 + 24
Combine like terms (Z): 182x + 16

7 0

3 years ago

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