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
nignag [31]
3 years ago
12

Find a pair of positive integers for and b in these questions 18 + 65 = 1865 23 + 7 = 2314

Mathematics
1 answer:
Mekhanik [1.2K]3 years ago
6 0

Answer:

a=100

b=1

Step-by-step explanation:

18a+65b=1865

23a+7b=2314

We need to make one of the variables equal to the other

So...

The LCM for 65 and 7 is 455

So multiply 7 with 18a+65b=1865

and Multiply 65 with 23a+7b=2314

7 times 18a+65b=1865 is 126a+455b=13055

65 times 23a+7b=2314 is 1495a+455b=150410

So Subtract 126a+455b=13055 and 1495a+455b=150410

So 1369a=137355

Divide:

Which is about 100 (The actual value is 100.3323594)

Thus a=100

Substitute:

b=1

Hope this helps!

(The answer is rounded)

You might be interested in
Geometry help needed!
lilavasa [31]

Answer:

13.76

Step-by-step explanation:

Area of the whole

The area of the whole = s^2 (the firgure is a square

s = 8

Area of the whole = 8^2 = 64

Area of the unshaded part

The 2 half circles = 1 whole circle

The radius of the 1/2 circle = 4 (eight has been cut in half)

Area of two half circles = 2* (pi r^2/2)

Area of two half circles = 2 * (pi 4^2/2)

area of two half circles =  16*pi

Area of the shaded area

Area of the shaded area = area of the whole - area of the unshaded area

Area of the shaded area = 64 - 16*pi

Area of the shaded area = 64 - 3.14*16 = 13.76

4 0
3 years ago
a recent survey determained that 7 out of 9 students eat school lunch at least once a week. if 54 students were surveyed how man
Setler [38]

Answer:

12 students

Step-by-step explanation:

Given

Students = 54

Required

Determine the number of students that eat lunch once a week

In Sets;

If out of 9, at least 7 eats one a week then

9 - 7 eats lunch once a week

9 - 7 = 2

<em>In other words;</em>

2 out of 9 students eat lunch once a week

Number of students in this category is then calculated as thus;

Number = \frac{2}{9} * 54

Number = \frac{2 * 54}{9}

Number = \frac{108}{9}

Number = 12

3 0
3 years ago
What is the equation and how do you figure it out?
Marrrta [24]
The equation is y=2x-2
To find the x-value you take any two pairs of value such as (-2,-3) and (0,-2) and you just use y1-y2/x1-x2. And for y-value you just see when x is zero
6 0
3 years ago
A serving of a certain cereal has 8 grams of sugar in 1 portion. Which equation shows how the amount of sugar and the number of
STatiana [176]
8s = 1p.

Hope this helps!
5 0
3 years ago
Read 2 more answers
25% = degrees of 360
s2008m [1.1K]

Answer:

90^o

Step-by-step explanation:

<u>Step 1:  Multiply </u>

<u />0.25 * 360^o

90^o

Answer:  90^o

4 0
3 years ago
Other questions:
  • Graph the function by making a table of values which table is correct
    5·1 answer
  • Segment EA is an altitude of triangle DEF. Find the area of the triangle.
    6·1 answer
  • Money in a savings account is compounded continuously over time, t, and is modeled by the function
    13·1 answer
  • A circle with radius of 2cm sits inside a circle with radius of 4cm
    15·1 answer
  • A town has a population of 1,000 people. The population triples every 100 years. Which equation and graph show the number of yea
    5·1 answer
  • Pleaseeeehelppppppppp
    11·1 answer
  • If a = 3, what is the value of 2 2/3?<br>A. 6<br>B. 12<br>C. 18<br>D. 36​
    9·1 answer
  • Charlie is cleaning her closet. She
    14·1 answer
  • Fill in the blanks
    7·2 answers
  • What is the slope of the line that passes through the points (-6,3) and (4,8)
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!