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3 years ago

Can you guys please help me with math? (Pt 2.)

Mathematics

2 answers:

natima [27]3 years ago

7 0

Let

x--------> the length side of the rectangle

y-------> the width side of a rectangle

we know that

$y=\frac{1}{2}x$ ------> equation A

$x=2a\ units$ ---------> given problem (see the graph)

substitute the value of x in the equation A

$y=\frac{1}{2}2a=a\ units$

therefore

the answer is

the top-left vertex of the rectangle is the point $(0,a)$

Firlakuza [10]3 years ago

5 0

(0,a)

it didnt move left or right on the x-axis
it went up a units (since its half of 2a)

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Vertical angles are congruent a. never b. sometimes c. always

yarga [219]

Answer:

Step-by-step explanation:

because vertical angles angles that are opposite each other and formed by two intersecting lines are congruent

hope this helps :D

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3 years ago

The pentagons ABCDE and JKLMN are similar find the length x of JK

never [62]

The second shape is double the first so you would do AB = 2 and then times by 2 as its double and you will get 4
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2 years ago

Read 2 more answers

I need help with question 1, 2, 6, 7 and 8.

olga2289 [7]

Answer:

Step-by-step explanation:

Q1) 15+15+15+15+15+15=90

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3 years ago

Marco is 8 years younger than his brother Paolo. If their product of their ages is 105, how old is Marco? plz help

Nina [5.8K]

Answer:

Marco's age is 7 years old

Step-by-step explanation:

Let

x ----> Marco's age

y ----> Paolo's age

we know that

$x=y-8$ ----> $y=x+8$ ----> equation A

$xy=105$ ----> equation B

substitute equation A in equation B

$x(x+8)=105$

$x^2+8x-105=0$

Solve the quadratic equation

The formula to solve a quadratic equation of the form

$ax^{2} +bx+c=0$

is equal to

$x=\frac{-b(+/-)\sqrt{b^{2}-4ac}} {2a}$

in this problem we have

$x^2+8x-105=0$

$a=1\\b=8\\c=-105$

substitute in the formula

$x=\frac{-8(+/-)\sqrt{8^{2}-4(1)(-105)}} {2(1)}$

$x=\frac{-8(+/-)\sqrt{484}} {2}$

$x=\frac{-8(+/-)22} {2}$

$x=\frac{-8(+)22} {2}=7$

$x=\frac{-8(-)22} {2}=-15$

Remember that the solution cannot be a negative number

The solution is x=7

therefore

Marco's age is 7 years old

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3 years ago

Graph the image of rhombus EFGH after a reflection across the line x = 3

igomit [66]

Answer: see image

Step-by-step explanation:

Draw line x = 3. Count how many units each point is away from line x = 3. Plot the new point the same number of units away from line x = 3 but in the opposite direction.

Point G is 4 units to the left of x = 3. The new point G' is 4 units to the right of x = 3.

Point F is 7 units to the left of x = 3. The new point G' is 7 units to the right of x = 3.

Point E is 7 units to the left of x = 3. The new point G' is 7 units to the right of x = 3.

Point H is 4 units to the left of x = 3. The new point G' is 4 units to the right of x = 3.

8 0

3 years ago