All categories

2 years ago

Please help, solve a and b

Mathematics

2 answers:

Troyanec [42]2 years ago

8 0

Answer:

The distance across the river d=175ft

Step-by-step explanation:

As◇ ABC& ◇ EDC are similar, BC/CD=AB/ DE

4x/7x=100/d

d=100×7/4=175

Darina [25.2K]2 years ago

7 0

Answer:

AE and BD use the same lines for both triangles so the angles for C are the same. this means that all the angles are congruent between both triangles.

Step-by-step explanation:

You might be interested in

40 percent of a number is PLUS 8 of that number, what is the number

rodikova [14]

0.4x=x+8

4x=10x+80

6x=-80

$x=-13\frac{1}{3}$

7 0

2 years ago

Jacob Is Twice as old as Sue. The sum of their ages is 69 years. How old is Jacob?

NemiM [27]

$x-Sue\\2x-Jacob\\\\x+2x=69\\\\3x=69\ \ /:3\\\\x=69:3\\\\x=23-Sue\\\\2x=2\cdot23=46-Jacob\\\\Answer:Jacob\ is\ 46.$

7 0

3 years ago

2.2a+3.4b=1.2a+2.6 solve for a

Ilia_Sergeevich [38]

Answer:

A = 2.6-3.4b

Step-by-step explanation:

4 0

2 years ago

Find the rate of change from the given table.

Ymorist [56]

The rate of change would be D. 4

4 0

2 years ago

Given that 3x+2y=5a+b and 4x-3y=a+7b, solve for y-x in terms of a and b.

Eduardwww [97]

Answer:

y - x = - 2 b

Step-by-step explanation:

Given-

3 x + 2 y = 5 a + b...................(i)

4 x - 3 y = a + 7 b.....................(ii)

Multiply by 3 and 2 in equation (i) & (ii) respectively-

Add equation (iii) & (iv)-

9 x + 6 y = 15 a + 3 a...................(iii)

8 x - 6 y = 2 a + 14 b ...................(iv)

17 x = 17 a + 17 b

x = a + b

Put x = a + b in equation (i)-

2 y = 5 a + b - 3 a - 3 b

2 y = 2 a - 2 b

y = a - b

∴ y - x = a - b - ( a + b )

y - x = a - b - a - b

y - x = - 2 b

3 0

2 years ago