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3 years ago

Calculate size of angle x. I worked out CA=14cm

Mathematics

1 answer:

nikdorinn [45]3 years ago

5 0

Answer:

∠x = 13.43°

Step-by-step explanation:

area ΔABC = 1/2 ( BD x AC) = 1/2 (22 x AC) = 42

22 x AC = 84 AC = 84/22 = 42/11 = 3.82

CD = BD - BC = 22 - 6 = 16

AD² = AC² + CD² = (3.82)² + 16² = 270.59

AD = 16.45

sin ∠x = AC / AD = 3.82 / 16.45 = 0.2322

∠x = 13.43°

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4.5 miles equal like how many yds???? Pls helpppp

r-ruslan [8.4K]

Answer:

7920 yards

Step-by-step explanation:

just use a calculator next time. Do miles to yards converter in :)

8 0

3 years ago

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Solve each equation using the Quadra 1. 4x2 +1 1x - 20=0

Tatiana [17]

Answer:

x= 12/11

Step-by-step explanation:

4 0

3 years ago

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Ada, Betty, Chris and David have $45 in total Ada gota 52 fromBetty, Chris tripleshis money and Davids money is cut by hall four

andrezito [222]

Using a system of equations, it is found that initially Ada has $0.385.

For the system, we have that the variables are:

x is Ada's amount.
y is Betty's amount.
z is Chris's amount.
w is David's amount.

$45 total, hence:

$x + y + z + w = 45$

Ada gets 2 from Betty, hence:

$x + 2 = y - 2$

$x = y - 4$

$y = x + 4$

Chris triples his money and David's money is cut by half four of them have the same amount, hence:

$x + 4 = y = 3z = \frac{w}{2}$

Then:

$3z = x + 4$

$z = \frac{x + 4}{3}$

$x + 4 = \frac{w}{2}$

$w = 2x + 8$

Solving for w, we find Ada's initial amount.

$x + y + z + w = 45$

$x + x + 4 + \frac{x + 4}{3} + 2x + 8 = 45$

$4x + 12 + \frac{x + 4}{3} = 45$

$12x + 36 + x + 4 = 45$

$13x = 5$

$x = \frac{5}{13}$

$x = 0.385$

Initially, Ada has $0.385.

A similar problem is given at brainly.com/question/6120515

5 0

3 years ago

Solve this equation 2(x + 2)/3 = 6

Naddik [55]

Answer:

Step-by-step explanation:

2(x + 2)/3 = 6

multiply by : 3

2(x + 2) = 18

2x+4 = 18

2x = 18-4=14

x=14/2

x=7

3 0

3 years ago

25 + 20 + 45 + 34 + 21 =

Lana71 [14]

Let's solve it step-by-step:

25 + 20 = 45

45 + 45 = 90

90 + 34 = 124

124 + 21 = 145

Therefore:

25 + 20 + 45 + 34 + 21 = 125

Hope it helped,

BioTeacher101

3 0

3 years ago

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