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ad-work [718]
2 years ago
9

Susan made 2 identical necklaces, each having beads and a pendent. The total cost of the beads and pendents for both necklaces w

as $9.80. If the beads cost a total of 3.40, how much did each pendant cost?
Mathematics
2 answers:
Charra [1.4K]2 years ago
7 0

Step-by-step explanation:

$ 3.15 each pendents .......

pogonyaev2 years ago
5 0
$3.15 each pendent.
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Find the directional derivative of the function at the given point in the direction of the vector v. f(x, y, z) = xyz , (3, 3, 9
Anna [14]

The derivative of f(x,y,z) in the direction of a vector \mathbf u is

\nabla_{\mathbf u}f=\nabla f\cdot\dfrac{\mathbf u}{\|\mathbf u\|}

With f(x,y,z)=xyz, we get

\nabla f=(yz,xz,xy)

and \mathbf u=(-1,-2,2),

\|\mathbf u\|=\sqrt{(-1)^2+(-2)^2+2^2}=3

Then

\nabla_{(-1,-2,2)}f(3,3,9)=(27,27,9)\cdot\dfrac{(-1,-2,2)}3=-21

8 0
3 years ago
Please help will mark brainliest if correct
Annette [7]

Answer:

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Step-by-step explanation:

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3 years ago
PLEASE HELP!! I WILL BRAINLIEST
ArbitrLikvidat [17]

Answer:

81.8%

Step-by-step explanation:

Mean = \mu = 40

Standard deviation = \sigma = 5

Now we are supposed to find out what percent of the numbers fall between 35 and 50

z = \frac{x-\mu}{\sigma}

Substitute the values

z = \frac{x-40}{5}

Now for P(35<x<50)

Substitute x = 35

z = \frac{35-40}{5}

z =-1

Substitute x = 50

z = \frac{50-40}{5}

z =2

So, P(-1<z<2)

P(z<2)-P(z<-1)

=0.9772-0.1587

=0.8185

= 0.818 \times 100

=81.8%

Hence  81.8% percent of the numbers fall between 35 and 50

7 0
3 years ago
Marty was renting a boat and wanted to get the best plan. Rental plan A charges a fee of
harina [27]

The system of equations that represent the situation are as follows;

  • C = $50 + $25h

  • C = $10 + $35h.

According to the question;

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  • Let C = Charged fees

  • and h = hours of rental

For Plan A:

  • Rental plan A charges a fee of
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  • C = $50 + $25h

For Plan B:

  • Plan B charges a fee of $10 plus $35 per hour.

  • C = $10 + $35h.

Read more on rental charges;

brainly.com/question/1503197

6 0
2 years ago
Read 2 more answers
Write the prime factorization of the number. 18,234
shusha [124]

Answer:

18234=2\times 3\times 3\times 1013

Step-by-step explanation:

We are given that a number 18234

We have to find the prime factorization of the number

Prime factorization : The number written  is in  the product of prime numbers is called prime factorization.

In order to find the prime factorization we will find the factors of given number

18234=2\times 3\times 3\times 1013

Hence, the prime factorization of 18234=2\times 3\times 3\times 1013

3 0
3 years ago
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