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
slega [8]
2 years ago
13

5 (a)

Mathematics
2 answers:
jeyben [28]2 years ago
7 0

Answer:

25

Step-by-step explanation:

We can have a set of equations for this. Let x be the number of 1 pound coins and y be the number of 2 pound coins.

We can set an equation like this:

Since she has twice as many 1 pound than 2 pound coins, we can set this equation:

x=2y

Since the worth of the coins add up to 100:

(1 pound)*x+(2 pounds)*y=100pounds

x+2y=100

We can substitute x=2y

2y+2y=100

y=25

Therefore we have 25 2 pound coins

andrey2020 [161]2 years ago
4 0

Answer:

25

Step-by-step explanation:

25 2 euro coins*2=50

50 1 euro coins*1=50

50+50=100

You might be interested in
6) (after 2.3) Consider the infinite system of linear equations in two variables given by ax + by = 0 where (a, b) moves along t
Paraphin [41]

Answer:

Step-by-step explanation:

Given infinite system of linear equations is ax + by = 0

when (a,b) moves along unit circle in plane.

a) system having unique system (0, 0)

Since two of equation in thus system will be

1.x+0.y=0\\x=0

and

0.x+1.y=0\\y=0

It is clear that x = 0, y= 0 is the only solution

b) Linear independent solution in this system gives some set of solutions

1.x+0.y=0\\\x=0

and

0.x+1.y=0\\y=0

Vector form is

\left[\begin{array}{ccc}1&0\\0&1\end{array}\right] =I

c) for this equation if add 0x +0y = 0 to system , Nothing will change

Because [0,0] satisfies that equation

d) If one of the equation is ax + by = 0.00001

where 0.00001 is small positive number

so, the system will be inconsistent

Therefore, the system will have no solution.

6 0
3 years ago
Dan says that all quadrilaterals are parallelograms. Tom says that it is not true. Explain who is correct??
sineoko [7]
Tom is correct, and Dan is wrong. A quadrilateral is a closed figure with four sides, for example, like a kite. A parallelogram is a four sided rectangular figure with opposite sides that are parallel.
6 0
3 years ago
Read 2 more answers
Factorise fully<br>7g - 56​
Kobotan [32]

Answer:

7 (g-8)

Step-by-step explanation:

this is your answer

4 0
3 years ago
What integer describes a decrease of seven? (A. 7 / B. -7 / C. 0 / D. 1/7)
Pie

Answer:

I thin B -7 cause its negative and negative goes down.

Step-by-step explanation:

3 0
3 years ago
Given h(x)=-3x-2,solve for x when h(x)=1​
lora16 [44]

Answer:

-5

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • The cylinders are similar the volume of the larger cylinder is 9648 cubic inches what is the volume of the smaller cylinder
    12·2 answers
  • 5x-3y=21<br><br> Solve for Y
    15·1 answer
  • 10) There are 144 seats for a concert at your school Twenty-eight of those seats will be taken up by the teachers. If each band
    5·1 answer
  • Martha is standing on a street corner in a big city, facing south.
    9·1 answer
  • A doctor at a local hospital is interested in estimating the birth weight of infants. How large a sample must she select if she
    10·1 answer
  • Find the x-intercepts, use the zero product property, r(r+7)=0
    8·1 answer
  • Suppose the points shown on the coordinate plane are vertices of a rectangle. Which statements are correct? A) The perimeter of
    13·2 answers
  • Does anyone know the answer to this?
    15·2 answers
  • Solve the formula V = pi r2h for r
    7·2 answers
  • If s=4πr², find the positive value of r when S=616.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!