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2 years ago

16,047

Mathematics

1 answer:

Sedaia [141]2 years ago

6 0

Answer:

Margaret has 2 flowers

Step-by-step explanation:

First we can make a set of equations

j = 3m

a = 3j

a + j + m = 26

Since j = 3m we can rewrite Anna's equation as a = (3(3m)) or simply a = 9m

Now we can plug in the equations for Anna and Jessica into the main equation

9m + 3m + m = 26

13m = 26

m = 2

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How do I find the value of X ???

aleksandr82 [10.1K]

To solve for the value of x, you can simply add all of the values and expressions together and make it equal to 180 degrees, since the sum of all angles in a triangle add up to this amount.

Then we can solve for X, by algebra.

7 0

4 years ago

Paul has 2/3 as many postcards as Shawn. The number of postcards Shawn has is 4/5 of the number of postcards Tim has. If the thr

ahrayia [7]

Tim has 56 more postcards than Paul.

Step-by-step explanation:

Total postcards boys have = 280

Let,

x = Paul's postcards

y = Shawn's postcards

z = Tim's postcards

According to given statement;

x + y + z = 280 Eqn 1

$x=\frac{2}{3}y$ Eqn 2

$y = \frac{4}{5}z$ Eqn 3

Putting value of y from Eqn 3 in Eqn 2

$x=\frac{2}{3}*\frac{4}{5}z\\\\x=\frac{8}{15}z$ Eqn 4

Putting value of x and y from Eqn 4 and Eqn 3 in Eqn 1

$\frac{8}{15}z+\frac{4}{5}z+z=280\\\\\frac{8z+12z+15z}{15}=280\\\\\frac{35z}{15}=280\\\\$

Multiplying both sides by $\frac{15}{35}$

$\frac{15}{35}*\frac{35}{15}z=280*\frac{15}{35}\\z=120$

Putting z=120 in Eqn 3

$y=\frac{4}{5}*120\\y=96$

Putting y=96 in Eqn 2

$x=\frac{2}{3}*96\\x=64$

Difference of Tim and Paul = 120-64 = 56

Tim has 56 more postcards than Paul.

Keywords: linear equation, substitution method

Learn more about substitution method at:

#LearnwithBrainly

7 0

3 years ago

What is y+8=-5(x+3) in standard form

Papessa [141]

Answer:

-5x + y = -27

Step-by-step explanation:

Equation: y+8 = -5(x+3)

Standard form is (ax + by = c)

We have to get x and y and their coefficients over to the left side of the equation, and all the single numbers to the right side.

y + 8 = -5 (x + 3)

y + 8 = -5x -15

y = -5x - 27

THE ANSWER IS :

-5x + y = -27

5 0

3 years ago

Vivek graphs the equation y = 1/4x^2 and y = -1/2x + 2 to solve the equation 1/4x^2 = -1/2x + 2. His graph is shown below.

DedPeter [7]

2 and -4 are the solutions

3 0

4 years ago

Read 2 more answers

How do you solve this problem??

denis23 [38]

Answer:

d. (-14) , e. 123 , f. 25

Step-by-step explanation:

You just need to substitute the values in the question and than problem solved !

7 0

3 years ago