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user100 [1]
2 years ago
11

Katie went to a craft store to purchase the supplies she needed to make two types of jewelry, this table shows the costs of the

supplies Katie needed.
This table shown the supplies needed to make each piece of jewelry.


Katie purchased the exact amount of supplies to make one bracelet and two necklaces.


PART A


Write an expression to determine the cost of supplies to make one bracelet.



Part B


Write an expression to determine the cost of supplies to make two bracelets. I WILL MARK BRAINLIEST!!! ANSWER QUICK PLEASE!!!!!!!

Mathematics
1 answer:
Pie2 years ago
7 0

Answer:

cost of bracelet = 25*.05 +4*.45

cost of bracelets = 2(25*.05 +4*.45)

Step-by-step explanation:

One bracelet

Supplies needed:

25 beads and 4 charms

Each bead costs .05 and each charm costs .45

Cost of bracelet = number of beads * cost per bead + number of charms * cost per charm

cost of bracelet = 25*.05 +4*.45

cost of bracelet = 1.2 +1.8

                            =3.00


To make 2 bracelets

Cost of bracelets =2*( number of beads * cost per bead + number of charms * cost per charm)

cost of bracelets =2*( 25*.05 +4*.45)

cost of bracelets=2( 1.2 +1.8)

cost of bracelets = 2*3

cost of bracelets = 6

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Answer:

0.2611

Step-by-step explanation:

Given the following information :

Normal distribution:

Mean (m) length of time per call = 3.5 minutes

Standard deviation (sd) = 0.7 minutes

Probability that length of calls last between 3.5 and 4.0 minutes :

P(3.5 < x < 4):

Find z- score of 3.5:

z = (x - m) / sd

x = 3.5

z = (3.5 - 3.5) / 0.7 = 0

x = 4

z = (4.0 - 3.5) / 0.7 = 0.5 / 0.7 = 0.71

P(3.5 < x < 4) = P( 0 < z < 0.714)

From the z - distribution table :

0 = 0.500

0.71 = very close to 0.7611

(0.7611 - 0.5000) = 0.2611

P(3.5 < x < 4) = P( 0 < z < 0.714) = 0.2611

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2 years ago
Naomi has 45 minutes to get ready for school. She spends x minutes getting dressed. Write an expression that represents the numb
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2 years ago
Which point on the y-axis lies on the line that passes through point C and is perpendicular to line AB?
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The question is incomplete! Complete question along with answer and step by step explanation is provided below.

Question:

Which point on the y-axis lies on the line that passes through point C and is perpendicular to line AB?

A. (-6, 0)

B. (0, -6)

C. (0, 2)

D. (2, 0)

The graph of the question is attached.

Answer:

The point is (x, y) = (0, 2)

The correct option is C.

Therefore, the point (0, 2) on the y-axis lies on the line that passes through point C and is perpendicular to line AB.

Step-by-step explanation:

From the given graph, the points A and B are

(x_1, y_1) = (-2, 4) \\\\(x_2, y_2) = (2,-8) \\\\

The slope of the equation is given by

m_1 = \frac{-8 - 4 }{2 -(-2)} \\\\ m_1 = \frac{-12 }{2+2} \\\\m_1 = \frac{-12 }{4} \\\\m_1 = -3 \\\\

We know that the slopes of two perpendicular lines are negative reciprocals of each other.

m_2 = - \frac{1}{m_1}

So the slope of the other line is

m_2 = \frac{1 }{3} \\\\

Now we can find the equation of the line that is perpendicular to the line AB and passes through the point C.

From the graph, the coordinates of point C are

(x_1, y_1) = (6, 4)

The point-slope form is given by,

y - y_1 = m(x -x_1)

Substitute the value of slope and the coordinates of point C

y - 4 = \frac{1 }{3} (x - 6)\\\\

To get the y-intercept, substitute x = 0  

y - 4 = \frac{1 }{3} (0 - 6) \\\\y - 4 = \frac{-6 }{3}\\\\y - 4 = -2\\\\y = 4 -2 \\\\y = 2 \\\\

So, the point is

(x, y) = (0, 2)

The correct option is C.

Therefore, the point (0, 2) on the y-axis lies on the line that passes through point C and is perpendicular to line AB.

6 0
2 years ago
Norma Jean makes $25 per hour. She works 35 hours per week. She gets a commission of 15% on her total sales. How much should Nor
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Answer:

$24166.67

Step-by-step explanation:

$25 per hour and works 35 hours per week

Norma Jean makes 35 * 25  (<em>without sales) = </em>$875

<em> </em>Total commission made by Norma<em> </em>= 4500-875 = $3625

<em>let total number of sales by Norma be x</em>

15% is the same as 15/100

<em>so </em>(15/100) * x =3625 <em> multiplying both sides by 100</em>

15x = 362500<em> making x subject of formula</em>

x = 362500/15

x = 24 166.67

Norma should sell total items worth $24166.67

 

6 0
2 years ago
Read 2 more answers
7. If SK = 13x - 5, KY= 2x + 9, and SY = 36-x, find each value.
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Answer:

SY=34, SK=21 and KY=13

Step-by-step explanation:

we have that

SY=SK+KY

substitute the given values

(36-x)=(13x-5)+(2x+9)

solve for x

36-x=15x+4

15x+x=36-4

16x=32

x=2

<em>Find the value of SY</em>

SY=(36-x)=36-2=34

<em>Find the value of SK</em>

SK=(13x-5)=13(2)-5=21

<em>Find the value of KY</em>

KY=(2x+9)=2(2)+9=13

5 0
2 years ago
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