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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:

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A beach has two floating docks. One is 650 meters east of the lifeguard stand. The other is 60° southeast and 750 meters from th

vovangra [49]

Answer:

705 meters

Step-by-step explanation:

$cos~60=\frac{650^2+750^2-d^2}{2 \times 650 \times 750} \\2 \times 650 \times 750 \times \frac{1}{2}=50^2(13^2+15^2)-d^2 \\487500=2500(169+225)-d^2\\487500=2500(394)-d^2\\487500=985000-d^2\\487500-985000=-d^2\\d^2=497500\\d=\sqrt{497500}\\or~d\approx705.337 \approx 705~meters$

7 0

2 years ago

What % of 360 is 108?

Vesnalui [34]

30 it is 30 i double checked

3 0

1 year ago

Read 2 more answers

9 2/3 – 4 1/5? I don’t really know and umm yea …

11Alexandr11 [23.1K]

The Exact form would be 82/15
The decimal form would be 5.46
The mixed number form would be 5 7/15

5 0

2 years ago

Read 2 more answers

Given g(x) = −3x + 4

Goshia [24]

Answer:

The average rate of change of g from x = a to x = a + h is -3.

Step-by-step explanation:

We are given the function:

$g(x) = -3x + 4$

And we want to determine its average rate of change of the function for x = a and x = a + h.

To determine the average rate of change, we find the slope of the function between the two points. In other words:

$\displaystyle \text{Avg} = \frac{g(a + h) - g(a) }{(a + h ) - a}$

Simplify:

$\displaystyle \begin{aligned} \text{Avg} &= \frac{g(a + h) - g(a) }{(a + h ) - a} \\ \\ &=\frac{(-3(a+h) + 4) - (-3a+4)}{h} \\ \\ &= \frac{(-3a -3h + 4) + (3a - 4) }{h} \\ \\ &= \frac{-3h}{h} \\ \\ &= -3\end{aligned}$

In conclusion, the average rate of change of g from x = a to x = a + h is -3.

This is the expected result, as function g is linear, so its rate of change would be constant.

3 0

2 years ago

GIven f(x) = 3x + 2, Find f(x) = 8 (Solve for x)

vodomira [7]

F(x)=8
3x+2=8
-2 both sides
3x=6
Divide 3 both sides
X=6/3
X=2

8 0

2 years ago