Last year, the ratio of the ages of Mel and her friend is 3:4. Next year, the ratio will be 4:5. Form two simultaneous equations using the information above, and solve them by using the elimination method. Hence find their ages now.

Answers

Answer 1

Answer:

Above is the answer, coupled with detailed step-by-step explanations. Thank you!

Last Year, The Ratio Of The Ages Of Mel And Her Friend Is 3:4. Next Year, The Ratio Will Be 4:5. Form

Related Questions

Matthew wants to buy a new pair of jeans. If the jeans were originally $65.00, but are on sale with a 10% discount, how much will Matthew have to pay for the jeans?

Answers

10% off means the jeans will sell for 90% of the original price ( 100% - 10% = 90%)

Multiply the original price by 90%

65.00 x 0.90 = 58.50

He will pay $58.50

An ice cream cup has 3 scoops of chocolate, 4 scoops of vanillas and 3 scoops of butter scotch ice cream. What is the probability that if you randomly sampled the ice cream that you will taste chocolate or vanilla ice cream?

Answers

Answer:

7 out of 10

Step-by-step explanation:

if you have 10 in the cup then you add

4 vanilla 3 chocolate = 7

and add all scoops together and you get 10

so your probability would be 7 out of 10

another way to say it is

the probability of getting chocolate or vanilla ice cream from the cup would be 7 out of 10

f(x)=x^2-25. Determine the value of x for the given function formula

Answers

Answer:

You can't really determine anything here, as we'd need to know also the value of F(x)! Check again if there misses anything in this question.

What is the solution to the system of equations?
y = -2x – 6
4x - y = -36

A (15, 24)

B (-7, 8)

C (-5, 4)

Answers

It’s a i think I don’t know

is (1, 3) a solution to the system of equations

8x + y = 11

12x + 2y = 18

Answers

Answer:

(1, 3) a solution to the system of equations

8x + y = 11

12x + 2y = 18

Step-by-step explanation:

ay están todos los deberes de la semana pasada gunnorni

Answer:

x=1 and y=3

Step-by-step explanation:

yes x=1 and y=3 is the solution for the equation.just by making y in the first equation subject of the formula and replacing in the second equation.

Solve for x in the equation x2 + 4x-4=8.
O x = -6 or x = 2
X=-2+2/2
O x = -2 or x = 6
O x=2+2V5

Answers

[tex] {x}^{2} + 4x - 4 = 8 \\ = > {x}^{2} + 4x - 4 - 8 = 0 \\ = > {x}^{2} + 4x - 12 = 0 \\ = > {x}^{2} + 6x - 2x - 12 = 0 \\ = > x(x + 6) - 2(x + 6) = 0 \\ = > (x - 2)(x + 6) = 0 \\ = > x = 2 \: \: \: or \: \: \: x = - 6 [/tex]

Answer:

x = -6 or x = 2

Hope you could get an idea from here.

Doubt clarification - use comment section.

Which statement about f ( x ) = x 2 + 5 x − 84 is true?

Answers

Answer:

It is False

Step-by-step explanation:

Basket A had 7 times as many plums as Basket B at first. Zoe put 58 more plums in each basket. Now Basket A has thrice as many plums as Basket B. How many more plums are there in Basket A than Basket B now?

Answers

Answer:

174 plums

Step-by-step explanation:

a=7b

a+58=3b

7b+58=3b

4b=58

b=14.5

29,203 earlier

87,261 now

261-87=174

Pls explain how to solve it!

Answers

Answer:

a = jd

Step-by-step explanation:

We want to solve for a given that a/d = j

To do so we want to isolate a (get a by itself )

We can do this by using inverse operations.

We would want to get rid of the d

A is being divided by d.

The inverse of division is multiplication so to get rid of the d we multiply a/d by d but whatever we do to one side we must do to the other so we multiply both sides by d

a/d * d = a

j * d = jd

we are then left with a = jd

And we are done!

Answer:

a = jd

Step-by-step explanation:

We have to solve the equation for a - in other words, we have to find a in terms of d and j. Another way to think about this is that we need a by itself on one side, equal to the other two values in some sort of relationship.

So, how can we accomplish this? Well, currently a is being divided by d, so we should probably multiply both sides by d to get that d away from a. The process is shown below:

[tex]\frac{a}{d} =j[/tex]

[tex]\frac{a}{d} *\frac{d}{1} =j*d[/tex]

[tex]\frac{ad}{d} =jd[/tex]

[tex]a=jd[/tex]

And look at that! We've solved for a in terms of the other two values. If you need any more help or everything I just did was confusing or overwhelming, let me know so I can clarify. :)

What is the mean of 9, 8, -15 and -12?

The Mean is:

Answers

Answer:

-2.5

Step-by-step explanation:

add all the values and divide by the no of values present

Figure A is a scale image of figure B.

Pls help!!!

Answers

x = 5.25

since there is a scale factor of 1.75, you multiply 3 * 1.75 and get 5.25

hope this is helpful!

Express the perimeter of the following
rectangle in terms of n.
3n-7
n + 5
1. O 4n - 2
2. O 8n - 14
3. O 8n - 4
4. O 6n - 14

Answers

The perimeter would be

2(3n - 7) + 2(n + 5)

6n - 14 + 2n + 10

Simplify

8n - 4

So the answer would be C

Suppose y varies directly with x where y=21 when x=7 find y when x = 15

Answers

Golfkrieg ist die ganze Woche im Auto oder ist das 56357

HELPPPPPPPPPPPPPppPPPPPPPPPPpppp

Answers

-5

A negative [-] times a positive [+] is a negative [-]
A negative [-] times a negative [-] is a positive [+]
A positive [+] and a positive [+] is a positive [+]

Since the quotient is a positive [+] 35, that means there had to have been two negatives [-] to make a positive. The answer is -5

ANSWER = -5

WORK:
35/ 7 = 5
~ Remember to add negative (-)
So the answer is -5

1. 6(12+4)
2. 10+4(2+20)
3. 7(4+19)

Answers

Answer:

1. 6 x 16 = 96

2. 10 + 4 x 22 = 10 + 88 = 98

3. 7 x 23 = 161

Step-by-step explanation:

NEED HELP NOW PLEASE

Answers

Answer:

-33.24 degrees F, -33.625 degrees F, -33.833 degrees F

Can someone please help me with 54? It’s the last one and it’s due in 1 hour Tysm if you do!!

Answers

Answer:

The awnser should be 4. (3x4 = 12, 12 x 4 = 48, 48 x 12 = 192, 192 x 4 = 768. )

Step-by-step explanation:

(Hope this helps, Happy holidays!!)

4. But what happened to the paper? Looks like it’s been through stuff.

A box contains 8 red balls and 8 black balls. A
woman takes balls out at random without looking at
them. Once a ball is taken out it is not replaced back in
the box. How many balls must she select to be sure of
having at least three balls of the same color?

Answers

Answer:

At least 5 times

Step-by-step explanation:

Number of balls to be selected for having assurance of at least three balls of the same colour is equals to 5 balls.

What is without replacement ?

" Without replacement means if an item is drawn from the set of items it is not kept back which represents sample space is decrease by as per the number of selection is done in first draw."

According to the question,

Number of red balls in a box = 8

Number of black balls in a box =8

As per the condition of without replacement we get,

In this case worst selection case could be

Alternate balls are of different colour

Black →Red → Black → Red → fifth ball is either Red or Black

Hence, 5balls must be selected for assuring at least three balls of the same colour .

Learn more about without replacement here

https://brainly.com/question/22221548

#SPJ2

Evaluate the expression for x = 5 and y = -1
xy - y =

Answers

Answer:

-4

Step-by-step explanation:

xy-y = ?

(5)(-1)-(-1) = ?

-5 + 1 = -4

Hope that helps

The figure below shows the number of dots in each of the first four terms of a pattern.

image 3946d177031641899e8a9055b29f185e

Which of these can be used to determine
N
, the number of dots, given
t
, the number of the term in the pattern?

N
=
4
(
t
−
1
)

N = 4 ( t − 1 )

N
=
3
t
+
1

N = 3 t + 1

N
=
3
(
t
−
1
)
+
1

N = 3 ( t − 1 ) + 1

N
=
3
t
+
2

Answers

Answer:

there is nothing just a a codding log

Step-by-step explanation:

The blueprint for Moreno's living room has a scale of 2 inches equals 3 feet. The family wants to use a scale of 1 inch equals 2 feet. What is the width of the living room on the new blueprint? (The width is 8)

Answers

Answer:

Part a) The scale of the new blueprint is

Part b) The width of the living room in the new blueprint is

Step-by-step explanation:

we know that

The scale of the original blueprint is

and

the width of the living room on the original blueprint is 6 inches

Find the actual width of the living room, using proportion

Find the actual length of the living room, using proportion

Find the scale of the new blueprint, divide the length of the living room on the new blueprint by the actual length of the living room

simplify

Find the width of the living room in the new blueprint, using proportion

Which of the following points would be on the graph of
the equation y=-40 + 6?
-4, -10)
(-4, 22)
(1, -10)
(1, - 2)
О
-
о

Answers

Step-by-step explanation:

To find points on the line y = mx + b, choose x and solve the equation for y, or. choose y and solve for x.

Identify the slope in the following equation: y= -x + 7
PLEASE HELP!!!!

Answers

Answer: The slope is -1 because this equation is already in y=mx+b so we dont have to apply the y2-y1 over x2-x1 formula you can easily identify the slope when its in y=mx+b because the slope always has a x after the number for example: 4x

Answer:

It is the coefficient of the x, when the y is isolated. In this case it is -1.

Prove the triangles are similar.

Answers

Answer:

SAS similarity

Step-by-step explanation:

The two triangles MON and MQP are such that

Angle M = Angle M

MO/MQ = MN/MP

Therefore, Triangle MON ~ Triangle MQP (SAS similarity)

Can someone plz help :(((((

What is the area, in square inches, of the rectangle?

Answers

Answer:

What are the side lengths?

Answer this correct and I will give you extra points.

Answers

Answer:

he didnt subtract each equations on both sides

5y-6=4y+1

-4 -4

y -6=1

+6=+6

y=7

Step-by-step explanation:

hope that wrk

The function f is given by f(x) = (x + 3)^2 - 1.
1) Write the coordinates of the vertex of the graph of f.
2) Does the graph open up or down? How do you know?

Answers

Answer:

the coordinate of the vertex is going to be (-3,-1) and it's concave up

Step-by-step explanation:

1.notice this function is in graphing form (x-h)^2+k, where (h,k) is your coordinate of the vertex, hence in this problem it's going to be (-3,-1)

2. notice that this function have a parent function of x^2, where it's a parabola that is concave up which in this case is basiclly the same shape it's also concave up

In calculus, we can proof it by finding the first derivatives and find the critical points, then take the second derivative at that critical points to see if that's negative or positive in this case it's positive

through (-4 0) perp y=2x-4 point slope form

Answers

y=(-1/2)x-2
Look at paper for work

Marty was renting a boat and wanted to get the best plan. Rental plan A charges a fee of
$50 plus $25 per hour. Plan B charges a fee of $10 plus $35 per hour.
Using systems of equations, answer the following questions. Show all your work.
Part A: Write a system of equations the represent the situation. (Be sure to identify the
variables.)

Answers

Answer:

Step-by-step explanation:

i'm sorry i'm just trying to get points this is my test and i need to know the answer and then i found the " Add answer ( 5 points ) and it was like calling my name so i am here now...bye

The system of equations that represent the situation are as follows;

C = $50 + $25h

C = $10 + $35h.

According to the question;

Mary was trying to rent a boat and wanted to get the best plan.

Let C = Charged fees

and h = hours of rental

For Plan A:

Rental plan A charges a fee of$50 plus $25 per hour.

C = $50 + $25h

For Plan B:

Plan B charges a fee of $10 plus $35 per hour.

C = $10 + $35h.

Answers

[tex]\left(\dfrac{3^8}{3^5} \right)^3\\\\\\=\left(3^{8-5}\right)^3\\\\=(3^3)^3\\\\=(3)^{3\cdot 3}\\\\=3^9[/tex]

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Last year, the ratio of the ages of Mel and her friend is 3:4. Next year, the ratio will be 4:5. Form two simultaneous equations using the information above, and solve them by using the elimination method. Hence find their ages now.​

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Last year, the ratio of the ages of Mel and her friend is 3:4. Next year, the ratio will be 4:5. Form two simultaneous equations using the information above, and solve them by using the elimination method. Hence find their ages now.