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PtichkaEL [24]
3 years ago
7

Jason has $90 to spend. He wants to purchase a bag for $30, one eraser for $10, and three pencils. Each of the pencils costs the

price. This will use up all of Jason’s money. Determine the price of a pencil. Show the equation used to work the problem.
Mathematics
2 answers:
snow_tiger [21]3 years ago
4 0
90 = 30+10+3x

This equation shows that all the prices of the the bag, eraser, and pencils equals $90. So now all we have to do to find the price of a pencil is solve the equation.

First add the 30 and 10 together.

90 = 40+3x

Then subtract 40 from each side

50 = 3x

Lastly divide each side by 3

x = 16.67

The price per pencil is $16.67

Hope this helps!
Vitek1552 [10]3 years ago
4 0
Well if Jason bought a bag for $30, and an eraser for $10, that will equal $40. So he has $50 left. So you divide by 3. 50÷3=16.66. So each pencil costs $16.66.
16.66. 49.98
× 3. + 40. 89.98 rounded up equals 90
--------- ----------
49.98. 89.98
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I need help thank you
aliina [53]

Answer:

Step-by-step explanation:

Use SOH CAH TOA to recall how the trig functions fit on a triangle

SOH: Sin(Ф)= Opp / Hyp

CAH: Cos(Ф)= Adj / Hyp

TOA: Tan(Ф) = Opp / Adj

we can find angle C  b/c the angles of a triangle always add to 180 , soo

180= C + 81 +63.5

35.5 = C

now that we have angle C and we know the Hyp we can use sin to find side g

where g = Opp and Hpy = 13.8 for this question

Sin(35.5) = Opp / 13.8

13.8*Sin(35.5) = Opp

8.0137 = Opp

g = 8.0137

next they ask for the area of the biggest triangle  ABC ( there are two smaller ones when you use D )

we can use 1/2 * base * height , but we don't know the base yet, even thou we do know the height.  

we can solve for line segment CD and DB and then add them for the side a .. or the base of the biggest triangle sooo.. CD = adj

Cos(35.5) = Adj / 13.8

13.8*Cos(35.5) = Adj

11.234794 =Adj

now solve for DB using cos again but with the other smaller triangle where  Adj = DB now

Cos(63.5) = Adj / 8.9

8.9*Cos(63.5) = Adj

3.971160

add these two Adjs together to get the total  'a' side

15.205954

now plug in side a as the base and g as the height of our biggest triangle

Area = 1/2 * 15.205954 * 8.0137

Area = 60.9159

rounded to 2 sig figs

Area = 60.92   :)   hope you get an "A"    :P

3 0
3 years ago
Guys help plz i need to pass my class
m_a_m_a [10]

Answer:

x y

2 -5

3 -4

4 -3

5 -4

6 -5

Step-by-step explanation:

you had to create a x and y chart but I give u the answer

5 0
3 years ago
three miners esch dup up 3 diamonds. the weight of the diamonds were 5,13,12,4,9,8,15,210, and 6 ounces of a piece. each of jack
Nataliya [291]

The total weight of Nico's diamond is 564 ounces

<h3>Weights</h3>

The weights of the diamond are given as:

5, 13, 12, 4, 9, 8, 15, 210, and 6 ounces

<h3>Total weights</h3>

Start by calculating the total weights

Total = 5+13+12+4+9+8+15+210+6

Total = 282

The above sum represents the total weights of Jack's diamonds.

So, the total weights of Nico's diamond is calculated as:

Nico = 2 \times 282

Nico = 564

Hence, the total weight of Nico's diamond is 564 ounces

Read more about sum and addition at:

brainly.com/question/4344214

3 0
2 years ago
Adam invested $12,000 in a six-year CD that paid 7.1% interest, but later needed to withdraw $2,500 early. If the CD's penalty f
Neporo4naja [7]

Answer:

C

Step-by-step explanation:

The amount Adam invested in a six years CD was $12,000 was 7.1%

Adam made a withdrawal of $2500 early. The early withdrawal was worth eighteen months of interest on the amount withdrawn.

Monthly interest = 7.1% / 12

= 0.59%

The interest for 18 months will be

(7.1% /12)18

= 10.65%

The penalty for withdrawing early was 18 months worth the interest on the amount withdrawn

= 2500 * 10.65%

= 266.25

This means Adam needs to pay a penalty of $266.25 for withdrawing early

7 0
3 years ago
Which is the graph of 2x + 3y &gt; -3?
disa [49]

Answer:

the third one

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
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