1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
zepelin [54]
3 years ago
9

Use the three steps to solve the problem. Betty has 10 more dimes than quarters. If she has $3.45, how many coins does she have?

{ a0quarters, a1dimes }
Mathematics
2 answers:
serious [3.7K]3 years ago
4 0

Answer:

betty has 24 coins.

Step-by-step explanation:

Let Betty has number of dimes ($0.10) = D

and number of quarters ($.25) = Q

Now equations will be

D = Q + 10 ----------(1)

(0.10)D + 0.25Q = 3.45 -----------(2)

Now by putting the value of D from equation (1) to equation (2)

(.10)(Q+10)+.25Q=3.45

.10Q + 1 + .25Q = 3.45

.35Q + 1 = 3.45

.35Q = 2.45

Q = \frac{2.45}{.35}=7

from equation (1)

D = 7 + 10 = 17

So betty has (7 + 17) = 24 coins.

Vanyuwa [196]3 years ago
3 0
<span>d = q + 10
10d + 25q = 345 cents
----
Substitute for "d" and solve for "q";
10(q+10) + 25q = 345

35q + 100 = 345
35q = 245
q = 7 (# of quarters)
---
Since d = q+10, d = 17 (# of dimes)
================
Cheers,
Stan H.</span>
You might be interested in
Which of the sums below can be expressed as 6(3 + 9)?<br> 18 + 54<br> 18 +9<br> 09 + 15<br> 6 + 54
Zinaida [17]

Answer: 18+54

Step-by-step explanation:

6*3=18 and 6*9=54

3 0
3 years ago
Read 2 more answers
According to the data, the mean quantitative score on a standardized test for female college-bound high school seniors was 500.
Sveta_85 [38]

Answer:

6.68% of the female college-bound high school seniors had scores above 575.  

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 500

Standard Deviation, σ = 50

We are given that the distribution of score is a bell shaped distribution that is a normal distribution.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

P(scores above 575)

P(x > 575)

P( x > 575) = P( z > \displaystyle\frac{575 - 500}{50}) = P(z > 1.5)

= 1 - P(z \leq 1.5)

Calculation the value from standard normal z table, we have,  

P(x > 575) = 1 - 0.9332= 0.0668 = 6.68\%

6.68% of the female college-bound high school seniors had scores above 575.

7 0
3 years ago
From the set {20, 38, 47}, use substitution to determine which value of x makes the inequality true.
vredina [299]
One way is to solve (it's easier)

x-9>29
add 9
x+9-9>29+9
x+0>38
x>38
just pick the numbers bigger than 38 as answer


47 is only number (38>38 is false)



answer is A

7 0
3 years ago
How do you right a number in its prime factorization?
Whitepunk [10]
Please use "write" here, not "right." "write" is "right" here, if you get my drift.
"right" is wrong in this context.    ;)

Example:  Most of us would see immediately that 5 is a prime factor of 50.

Write 50 as 5 * 10.

10 is not prime; it can be factored into 5 and 2.

Thus, 50 written as the product of its prime factors is 5 * 5 * 2  (answer)
7 0
3 years ago
Which equation is correct?
Ierofanga [76]

Answer:

cos h=x/h=30/g=60/x=rad3/2...y=1/2/z=1

Step-by-step explanation:

//////

6 0
3 years ago
Other questions:
  • Question : A soccer team played 160 games and won 65 percent of them. How many games did it win?
    14·1 answer
  • WILL MARK AS BRAINLIEST
    10·1 answer
  • What is the domain of the function y= sqrt3/x ? plese help
    14·2 answers
  • An $8 item is marked up 75%. What is the cost of the item?
    12·1 answer
  • Plz help !!!!!!!! A rectangular park is 400 m long and 200 m wide. If you walked around the park twice, how far would you walk?
    12·1 answer
  • Solve the equation. \dfrac{11}6 =n+\dfrac79 6 11 ​ =n+ 9 7 ​ start fraction, 11, divided by, 6, end fraction, equals, n, plus, s
    14·1 answer
  • (05.01)Which equation can be used to calculate the area of the shaded triangle in the figure below?
    15·2 answers
  • Samantha is building a miniature maze for a science experiment. she determines that she needs 6 yards of wood for the exterior w
    10·1 answer
  • No link just right answer
    9·2 answers
  • HELP HELP HELP HELP HELP
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!