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4 years ago

Look at pic below... please do it.. need correct answer.. i will mrk brsinliest hurry.. need help..

Mathematics

2 answers:

galina1969 [7]4 years ago

5 0

The answer to this question is B

lozanna [386]4 years ago

3 0

Answer:

B rotation then reflection

Step-by-step explanation:

The white figure is the same size so it cannot include a dilation.

To go from blue to yellow, it is a reflection across the y axis.

Then it is rotated

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Solve 3x − 2y = −21 and 2x + 5y = 5 using elimination

nydimaria [60]

Answer:

x = -5 and y = 3

Step-by-step explanation:

There are two equations :

3x − 2y = −21 ....(1)

2x + 5y = 5 ......(2)

Multiply equation (1) by 2 and equation (2) by 3.

6x - 4y = -42 ...(3)

6x + 15y = 15 ....(4)

Subtract equation (4) from (3) :

6x - 4y - (6x + 15y) = -42 -15

-4y -15y = -57

-19y = -57

y = 3

Put y = 3 in equation (2) :

2x + 5(3) = 5

2x = 5-15

2x = -10

x = -5

So, the value of x is (-5) and y = 3.

6 0

3 years ago

Find the constant of variation for the relation and use it to write an equation for the statement. Then solve the equation

Olenka [21]

Answer:

y = $\frac{49}{3}$

Step-by-step explanation:

Given that y varies directly as x then the equation relating them is

y = kx ← k is the constant of variation

To find k use the condition y = 7 when x = 3

k = $\frac{y}{x}$ = $\frac{7}{3}$ , thus

y = $\frac{7}{3}$ x ← equation of variation

When x = 7, then

y = $\frac{7}{3}$ × 7 = $\frac{49}{3}$

8 0

3 years ago

I will rate you brainliest i need help with these 3 questions

Vlad1618 [11]

Answer:

1) difference of squares, then its factors are (x+4)(x+2)

2) 3 (x+4)/2 (x-4)(x+4)

3/2 (x-4)

3) 3x+11/5x-9

4 0

3 years ago

HELPPPPPPPPPPPPPPPPPPP PLEASEEEE

Softa [21]

So half of Nina's age is 10/2= 5. And since Greg is three years younger we subtract from 5 like so...
10/2=5
5-3
2
So Greg is 2 years old. I hope this helps love! :)

5 0

3 years ago

Read 2 more answers

What is the perimeter of the triangle shown on the coordinate plane, to the nearest tenth of a unit?

miv72 [106K]

A geometry app shows lengths that add up to 27.4 units.

The Pythagorean theorem can be used to find the lengths of the segments. Each length is the square root of the sum of squares of the difference in x-coordinates and the difference in y-coordinates.

segment AB: length = √(3²+8²) = √73 ≈ 8.544

segment BC: length = √(7²+4²) = √65 ≈ 8.062

segment CA: length = √(10²+4²) = √116 ≈ 10.770

Then the total perimeter is the sum of these lengths:

... 8.544 +8.062 +10.770 = 27.376 ≈ 27.4 . . . . units

5 0

3 years ago