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1 year ago

9a plz help! Ddldkdekekeksksld

Mathematics

1 answer:

velikii [3]1 year ago

6 0

Answer:

30°

Step-by-step explanation:

The area of a triangle given sides a and b and angle C is:

area = (ab × sin C)/2

Here we are given sides a and c, and we are looking for angle B, so we have

area = ac × sin B

12 cm² = [(8 cm)(6 cm)(sin B)]/2

24 = 48sin B

sin B = 0.5

B = 30°

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Semenov [28]

Okay okay okay

Answer:

r = $\frac{30}{71}$

Step-by-step explanation:

12 - $\frac{r}{6}$ = 5

6 × 12 × r × 6 - $\frac{r}{6}$ = 5 × 6

72r - r = 30

71r = 30

r = 30 ÷ 71

r = $\frac{30}{71}$

8 0

2 years ago

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{ PLEASE ANSWER QUICKLY, PROBLEM DUE ASAP } The functions f(x) and g(x) are defined below. Which expression is equal to f(x) + g

8090 [49]

Answer:

Option C. 2x + 20 / x² + 6x – 40

Step-by-step explanation:

f(x) = x + 16 / x² + 6x – 40

g(x) = 1 / x + 10

To find f(x) + g(x), please refer to the attached photo.

7 0

3 years ago

Pls help it due ASAP and show workings

Effectus [21]

Answer:

it's 70°

Step-by-step explanation:

well first by vertical angles we know that

$\angle BAC = \angle DAE\\\\\angle DAE = 4x+6$ ( I don't know how to put the symbol xd)

and given we know that

$\angle EAF = \angle EAD = 4x+6$

solving for x

we know that

$\angle CAD = 180\\\\\angle CAB + \angle ABD = 180\\\\4x+6+6x+14=180\\\\10x+20=180\\\\10x=160\\\\x=16$

and now for $\angle EAF$

$\angle EAF = 4x+6\\\\\angle EAF = 4(16)+6\\\\\angle EAF = 64+6\\\\\angle EAF = 70$

7 0

3 years ago

Figure FGH has vertices located at F(1, 3), G(–1, 2), and H(2, 1). The figure is rotated using the origin as the center of rotat

Law Incorporation [45]

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5 0

3 years ago

Read 2 more answers

5. A blue whale calf swam from Miami, Florida, to Havana, Cuba, a distance of 228 miles, in 12

kow [346]

The average speed is 97346 feet per hour approximately

Solution:

Given that blue whale calf swam from Miami, Florida, to Havana, Cuba, a distance of 228 miles, in 12 hours 22 minutes

To find: average rate of speed in feet per hour

The speed is given by formula:

$speed = \frac{distance}{time}$

From given information,

$distance = 228 \text{ miles }$

$time = 12 \text { hours } 22 \text{ minutes }$

We know that,

$1 \text{ minute } = \frac{1}{60} \text{ hour}$

Therefore,

$12 \text { hours } 22 \text{ minutes } = 12 + \frac{22}{60} \text{ hour } = 12.3667 \text{ hour }$

Substituting the values in above formula,

$\text { speed }=\frac{228}{12.3667}=18.4366$

Thus average speed is 18.4366 miles per hour

Let us convert to feet per hour

We know that,

1 mile = 5280 feet

Therefore,

18.4366 miles = 18.4366 x 5280 feet = 97345.248 feet

Thus average speed is 97346 feet per hour approximately

6 0

2 years ago