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Darina [25.2K]
3 years ago
5

Jessie has some nickels, dimes, and quarters in her bank. The number of coins is 26 . The expression 0.05⁢n+0.10⁢d+0.25⁢q repres

ents the value of the coins, which is $2.65 . Jessie has two more dimes than she does quarters. How many of each coin does Jessie have?
Mathematics
1 answer:
Westkost [7]3 years ago
7 0
Use the substituting equation to solve
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Please help me <br> thank you
lilavasa [31]
Use the Pythagorean theorem. We have legs with lengths of 15 and 20 miles, now let's solve for the hypotenuse.

a=15
b=20
c=?

a^2+b^2=c^2
15^2+20^2=c^2
c^2=400+225=625
c=25

Your answer is 25 miles. Hope this helps! :)
7 0
3 years ago
The angles with measures x and 4x are complementa angles.which is the value of x
pochemuha

Answer:

\huge\boxed{x=18^o}

Step-by-step explanation:

Two angles are Complementary when they add up to 90°.

Therefore

x+4x=90\qquad|\text{combine like terms}\\\\5x=90\qquad|\text{divide both sides by 5}\\\\\dfrac{5x}{5}=\dfrac{90}{5}\\\\\boxed{x=18}

8 0
2 years ago
This is not an incomplete question, it has come from a very reliable source, please dont delete. If 60% of the students in Mr. B
nika2105 [10]

Answer:

35 students

Step-by-step explanation:

Take the number of students in the class and multiply by 60% and see if you get an integer number

28 * .60 =16.8  not an integer

32 * .6 =19.2

35 * .6 =21  yes

39*.6 =23.4

7 0
3 years ago
An article in American Demographics claims that more than twice as many shoppers are out shopping on the weekends that during th
Monica [59]

Answer:

0.3085,0.2417,0.0045

Step-by-step explanation:

Given that X, the amount of money spent at shopping centers between 4 P.M. and 6 P.M. on Sundays has a normal distribution with mean $85 and with a standard deviation of $20.

X is N(85, 20)

To convert into std normal variate we use the following formula

Z=\frac{x-85}{20}

a) the probability that he has spent more than $95 at the mall

=P(X>95) = P(Z>0.5)=\\0.5-0.1915\\=0.3085

b.  the probability that he has spent between $95 and $115 at the mall

=P(95

c. If two shoppers are randomly selected, what is the probability that both shoppers have spent more than $115 at the mall

=product of two probabilities since independent

= {P(X>115)}^2\\= P(Z>1.5)*P(Z>1,5)\\= 0.0668^2\\=0.0045

7 0
3 years ago
Explain answer !<br><br> ( Will give brainlst)
gavmur [86]
Pi = 3.142...
1/4 = 0.25
Root 3 = 1.732...
So smallest to biggest: 1/4, root 3, Pi
5 0
3 years ago
Read 2 more answers
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