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4 years ago

Which statement is true ?

Mathematics

1 answer:

salantis [7]4 years ago

5 0

That would be DF is congruent to DE ( first choice)

( they are both = sqrt(2^2 + 3^2)

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Which matrix translates the vector 〈4,-3〉 to 〈6,-8〉?

Mars2501 [29]

Answer:

2, -5

Step-by-step explanation:

3 0

3 years ago

DUE AT 11:59 PLEASE HELP Only if you are good at geometry.

adoni [48]

Answer:

- reflection about the x-axis

- translation down 2 units

- translation right 3 units

Step-by-step explanation:

8 0

3 years ago

Solve for k 5/8(3k+1)-1/4(7k+2)=1

lesya [120]

Answer:

Step-by-step explanation:

$\dfrac{5}{8}(3k+1)-\dfrac{1}{4}(7k+2)=1\qquad\text{multiply both sides by 8}\\\\8\!\!\!\!\diagup^1\cdot\dfrac{5}{8\!\!\!\!\diagup_1}(3k+1)-8\!\!\!\!\diagup^2\cdot\dfrac{1}{4\!\!\!\!\diagup_1}(7k+2)=8\cdot1\\\\5(3k+1)-2(7k+2)=8\qquad\text{use the distributive property}\ a(b+c)=ab+ac\\\\(5)(3k)+(5)(1)+(-2)(7k)+(-2)(2)=8\\\\15k+5-14k-4=8\qquad\text{combine like terms}\\\\(15k-14k)+(5-4)=8\\\\k+1=8\qquad\text{subtract 1 from both sides}\\\\k=7$

3 0

3 years ago

(10 points)What is the sum of the first ten terms of the sequence 4,-12, 36, -144...

MrRissso [65]

Answer:

Step-by-step explanation:

7 0

4 years ago

The perimeter of the triangle at right is 52 units. Write and solve an equation based on the information in the diagram. Use you

marysya [2.9K]

Answer:

equation: (7x-4) +19 +(10x+3) = 52
x = 2
red: 10
blue: 19
yellow: 23

Step-by-step explanation:

The equation is based on the relation that the perimeter is equal to the sum of the side lengths.

P = red + blue + yellow

52 = (7x -4) +(19) +(10x +3)

52 = 17x +18 . . . . . . . . . . . . . . simplify

34 = 17x . . . . . . . . . . . . . subtract 18

2 = x . . . . . . . . . . . . divide by 17

red = 7(2) -4 = 10

blue = 19

yellow = 10(2) +3 = 23

3 0

2 years ago