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
mote1985 [20]
3 years ago
8

PLEASE ANSWER ASAP

Mathematics
2 answers:
lora16 [44]3 years ago
8 0
4. Number of dimes= d and number of quarters=q
d+q= 27
10d + 25q= 405
d= 27-q
10(27 -q) +25 q= 405
270 -10q + 25q= 405
270 + 15q= 405
15q= 135
q=9
d + q= 27
d +9=27
d=18
<span>She has 18 dimes</span>
Studentka2010 [4]3 years ago
7 0
A: number of dimes
b: number of quarters
a+b=27 ————> a=27-b

10a+25b=405
10(27-b) +25b=405
270-10b+25b=405
15b=135
b=9
a=27-9=18
The answer is 18 dimes
You might be interested in
Find the cotangent of angle B. <br> 1. 12/5<br> 2. 12/13<br> 3. 13/12<br> 4. 5/12
labwork [276]
Cot = Cos/Sin

Cos = 12/13
Sin = 5/13

Therefore, 12/3 divided by 5/13 equals 12/5

Answer is 1.

3 0
3 years ago
Read 2 more answers
Given f(x)=3x-1, solve for x when f(x)=-7.
ddd [48]

Answer:

x = -2

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

Equality Properties

<u>Algebra I</u>

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

f(x) = 3x - 1

f(x) = -7

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Substitute:                    -7 = 3x - 1
  2. Isolate <em>x</em> term:              -6 = 3x
  3. Isolate <em>x</em>:                       -2 = x
  4. Rewrite:                        x = -2
8 0
3 years ago
Kathleen had a bag of candy-coated chocolates. Of the 60 candies in the bag, 20% were red, 30% were orange, 30% were green, and
Genrish500 [490]
60*20% are red
60*30% are orange
60*30% are green
60*20% are blue = 12 * 20% = 2.4 blue candy chocolates that are damaged

5 0
4 years ago
Read 2 more answers
How many million bacteria were in the dish at 9 a.mt
TEA [102]

Answer:it depends what was on it but i would say about 500

Step-by-step explanation:

3 0
3 years ago
I need help with this
svp [43]
I’m not sure how to explain it but the answer is B
6 0
4 years ago
Other questions:
  • A system of linear inequalities can have solutions in exactly three of the quadrants
    15·2 answers
  • Jeff and George each have a box of popcorn. Whose box holds more popcorn? Choose 1 answer: Choose 1 answer: (Choice A, Checked)
    10·2 answers
  • Consider the function represented by the graph. What is the domain of this function?
    13·1 answer
  • Solve for x. leave the answer in simplest radical form
    12·1 answer
  • Is this a right triangle 8,12,15
    11·1 answer
  • ???!!???????????????????
    14·1 answer
  • Write the equation of the line in slope intercept form that goes through points (1,8) and (5,20)
    5·1 answer
  • Alisha hiked a trail that was 9/10 mile and Joseph hiked a trail that was 5/10 mile. How much farther did Alisha hike than Josep
    14·1 answer
  • For a school fundraiser Paul bought a big box of ducks and wrote prize amounts, in dollars on the bottom of each rubber duck. Th
    11·2 answers
  • A right triangle has a height of 27 inches and a base of 30 inches what is the area of the triangle
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!