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krek1111 [17]
3 years ago
14

Jake took $20.00 to the shop and asked that it be changed into 5-cent coins. How many coins did he get?

Mathematics
1 answer:
coldgirl [10]3 years ago
8 0

Answer:

He got 400 coins because there are 100 cents in a dollar. 100*20=2000. 2000/5=400!

Step-by-step explanation:

I hope this helps! Have a great rest of your day!

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Find the value of each variable. Answer in simplest radical form.
Vlada [557]

Answer:

x = 5√3; y = 5

Step-by-step explanation:

Finding y:  The sine function links the 30° angle, the 10 unit hypotenuse and the side opposite the angle, y:

sin 30° = 1/2 = y/10

                                 

Solve the equation of ratios

1        y

-- = -----  using cross-multiplication first:  2y = 10 → y = 5

2     10

We can now find x either by using a similar approach and the cosine function or by using the Pythagorean Theorem:

x² + y² = 10² = 100  →  x² = 100 - y²  =  100 - 5²  = 75

If x² = 75, then x = ±√75 = ± (√25)·(√3)   →  ±5√3

Since lengths are always positive,   take x = 5√3 as the answer.

8 0
3 years ago
Find the sum of the geometric series given a1=2, r=−3, and n=8.
inn [45]

Answer:

<u>Sum</u><u> </u><u>of</u><u> </u><u>the</u><u> </u><u>G</u><u>.</u><u>P</u><u> </u><u>is</u><u> </u><u>-</u><u>3</u><u>2</u><u>8</u><u>0</u>

Step-by-step explanation:

Summation:

{ \bf{sum =  \frac{a( {r}^{n }-1 )}{r - 1} }} \\  \\ { \tt{sum =  \frac{2( { { - 3}^{8 } -1)} }{ - 3 - 1} }} \\ { \tt{ =  \frac{13120}{-4} }} \\  = -3280

3 0
3 years ago
Read 2 more answers
the equation y=12.21x +37.42 fits the scatterplot of the values for stock ABC over the past month with an r-value of 0.9871. how
Lynna [10]
I'm pretty sure you already solved this by now, but I'll say the answer anyway. This problem has already been solved by another as a verified answer. 

This is the concept of financial algebra, we are required to calculate the value of stock ABC which follows the model given by: 
y=12.21x+37.42
given that x=62 days, 
the value of th estock after 62 days will be given by: 
y=12.21(62)+37.42
y=757.02+37.42
y=794.44

ABC will be worth $794.44

I take no credit for this answer. It was solved by CastleRook. 
4 0
3 years ago
Please help me fast its for plato
Alenkinab [10]

Answer:

5/b

Step-by-step explanation:

you would want to add your 1+4 together on top of your b which is your common denominator in this case and you should end up with 5/b

7 0
3 years ago
FInd the slope of these graphs plz :(
Lerok [7]

Answer:

1. Slope =1.5

2. Slpe=20

Step-by-step explanation:

The first one

150/100=1.5

Second one

1/0.2=20

7 0
2 years ago
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