2 years ago

State of each triangle is a right triangle

Mathematics

1 answer:

Marta_Voda [28]2 years ago

8 0

Number 7 is not a right triangle but Number 8 is

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Solve the simultaneous equations

Contact [7]

Answer:

The solution for given system of equations is: x = 6 and y = 3

(6,3)

Step-by-step explanation:

Given equations are:

$3x+4y=30\ \ \ Eqn\ 1\\3x-y=15\ \ \ \ Eqn\ 2$

There are three methods to solve simultaneous equations

Elimination
Substitution
Co-efficient method

We will use the elimination method as the coefficients of x in both equations are already same

Subtracting equation 2 from equation 1

$3x+4y - (3x-y) = 30-15\\3x+4y-3x+y = 15\\5y = 15\\\frac{5y}{5} = \frac{15}{5}\\y = 3$

Putting y = 3 in equation 2

$3x-3 = 15\\3x = 15+3\\3x = 18\\\frac{3x}{3} = \frac{18}{3}\\x = 6$

Hence,

The solution for given system of equations is: x = 6 and y = 3

(6,3)

7 0

3 years ago

5х – 2 = 3х + 4 sove equation for x

Kazeer [188]

Answer:

x=3

Step-by-step explanation:

5х - 2 = 3х + 4

5х - 3х = 4 + 2

2х = 6

х = 6/2

х = 3

Hope this helps!

8 0

2 years ago

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Put these numbers in descending order. 0.251 0.18 0.7 0.171

Nikolay [14]

Answer: 0.7, 0.251, 0.18, 0.171

Step-by-step explanation:

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3 years ago

Mrs. Williams charges $30 per hour for tutoring services plus a one-time fee of $60 for supplies. How many tutoring sessions can

Nata [24]

Answer:

if it is at most yoy cant go over 1,200 but it never said u had to spend any lower if 30x 3=900 + 60 that is 960 so your answer should be 3 hours

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2 years ago

5 is 20 percent of what

miskamm [114]

Answer:25 is the answer

Step-by-step explanation:

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3 years ago

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