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1 year ago

Can someone help me with this please??? 50 points + Brainlyest!!!!!

Mathematics

1 answer:

brilliants [131]1 year ago

7 0

Answer:

part A - slope is 40

Part B - In point slope form it is y - 600 = 40x

In Slope intercept form it is y = 40x + 600

In Standard form it is 40x - y + 600 = 0

Part C - g(x) = 4x + 600

Part D - After 7 days, the balance will be $628???

Step-by-step explanation:

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An aeroplane at an altitude of 200m observes the angle of depression of opposite points on the two banks of a river to be 45 and

blagie [28]

Answer:

84.5 m

Step-by-step explanation:

It is often helpful to draw a diagram for word problems involving geometric relationships. One for this problem is shown below.

The mnemonic SOH CAH TOA reminds you of the relationship between sides of a right triangle:

Tan = Opposite/Adjacent

Here we're given angles of depression measured from the horizontal (as shown in the diagram), but it is more convenient to use angles measured from the vertical. In particular, ∠BAO is the complement of 60°, and its tangent is the ratio OB/OA:

tan(30°) = OB/OA

OB = (200 m)·tan(30°) ≈ 115.47 m . . . . . . multiply by OA, use OA=200 m

Likewise, we have ...

OC = (200 m)·tan(45°) = 200 m

Then the width of the river is the difference between these values:

BC = OC -OB = 200 m - 115.47 m = 84.53 m

4 0

3 years ago

I’ve asked 3 times and no one knows pls helpahh

BigorU [14]

<h3>Answer: x = 21</h3>

Explanation:

The two angles shown combine to 180 degrees because the angles form a straight line.

(3x+18)+(4x+15) = 180

7x+33 = 180

7x = 180-33

7x = 147

x = 147/7

x = 21

7 0

2 years ago

Tehjrdebgf HELPPPPPPPPPPPPPP

lana66690 [7]

hmmm hmmm hmm hm hm hm hm hm hm hm hm hmm

7 0

3 years ago

4/x-1+6/x+1=-12/x^2-1

Mademuasel [1]

$\frac{4}{x - 1} + \frac{6}{x + 1} = \frac{-12}{x^{2} - 1}$

$\frac{4(x + 1)}{(x - 1)(x + 1)} + \frac{6(x - 1)}{(x - 1)(x + 1)} = \frac{-12}{x^{2} - 1}$

$\frac{4x + 4}{x^{2} - 1} + \frac{6x - 6}{x^{2} - 1} = \frac{-12}{x^{2} - 1}$

$\frac{10x - 2}{x^{2} - 1} = \frac{-12}{x^{2} - 1}$

$(10x - 2)(x^{2} - 1) = -12(x^{2} - 1)$
$10x^{3} - 10x^{2} - 2x^{2} + 2 = -12(x^{2}) + 12(1)$
$10x^{3} - 12x^{2} + 2 = -12x^{2} + 12$
$10x^{3} - 12x^{2} + 12x^{2} + 2 = -12x^{2} + 12x^{2} + 12$
$10x^{3} + 2 - 2 = 12 - 2$
$\frac{10x^{3}}{10} = \frac{10}{10}$

$x^{3} = 1$
$x = 1$

4 0

2 years ago

The ratios a: B and B :c are equivalent to one another

Dafna11 [192]

Answer:

Options (2) and (5)

Step-by-step explanation:

Given ratio is a : b and b : c

$\frac{a}{b}=\frac{b}{c}$

$\frac{b}{a}= \frac{c}{b}$ [Option 2]

$\frac{a}{b}=\frac{b}{c}$

b × b = a × c

b² = ac

If a = b,

b² = bc

b = c [Option 5]

Therefore, Options (2) and (5) are the correct options.

7 0

2 years ago