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2 years ago

ABC is similar to JKL

Mathematics

2 answers:

VLD [36.1K]2 years ago

8 0

21.6 Inches
Because 10 x 1.8 = 18 and 12 x 1.8 = 21.6

denpristay [2]2 years ago

6 0

Set up a proportion.

AB/JK = AC/JL

18/10 = x/12

Cross multiply:

10x = 216

Divide by 10

x = 21.6

Hope this helps :)

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Can someone help me with this thanks

Ugo [173]

The length of the brace required is 4.3m

What is sine rule?

In a ΔABC a, b and c are the sides and A, B and C are angles then,

$\frac{a}{SinA}=\frac{b}{sinB}=\frac{c}{sinC}$

We can find the length, l as shown below:

Let AB=3m, BC=2m and AC=l

Let ∠A=25°

So, in ΔABC

$\frac{BC}{sinA}=\frac{AB}{sinC}=\frac{AC}{SinB}$

$\frac{BC}{sinA}=\frac{AB}{sinC}$

$\frac{2}{sin25}=\frac{3}{sinC}$

$\angle{C}=sin^{-1}(\frac{3\times sin25}{2} )$

∠C=39.34°

∠A+∠B+∠C=180°

∠B=180°-25°-39.34°

∠B=115.66°

$\frac{BC}{sinA}=\frac{AC}{SinB}$

$\frac{2}{sin25}=\frac{l}{sin(115.66)}$

$l=\frac{2\times sin(115.66)}{sin25}$

l=4.2659

Rounding to nearest tenth of meter.

l=4.3m

Hence, the length of the brace required is 4.3m

Learn more about Sine Rule here:

brainly.com/question/25852087

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8 0

1 year ago

Use a net to find the surface area of the cylinder use 3.14 for pi

telo118 [61]

Answer:

3.14

Step-by-step explanation:

7 0

2 years ago

The probability of two events that are not mutually exclusive may be calculated using the formula

Nataly [62]

Answer:

7/13

Step-by-step explanation:

P(A or B) = P(A) + P(B) − P(A and B)

P(red or jack) = P(red) + P(jack) − P(red and jack)

P(red or jack) = 26/52 + 4/52 − 2/52

P(red or jack) = 28/52

P(red or jack) = 7/13

7 0

3 years ago

Read 2 more answers

Karen has 6 more than twice as many newspaper customers as when she started selling newspapers. She now has 98 customers. How ma

Black_prince [1.1K]

Answer:

46 customers

Step-by-step explanation:

If the number of original customers is n, we can write the following equation:

98 = 2n + 6

92 = 2n

46 = n

5 0

3 years ago

2(5x-7)=2x+10 what Is the distributive property

professor190 [17]

2(5x)2(-7)=2x+10

2(5x)= 10x
2(-7)=-14

10x-14=2x+10

Solve:
10x-2x=8x

8x-14=10

14+10=24

8x=24

24/8=3

X=3

4 0

3 years ago