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mixer [17]
3 years ago
15

Find AB when given angle B 64 degress angle C 75 degrese and side a 19

Mathematics
1 answer:
jeka943 years ago
4 0

Answer:

about 28

Step-by-step explanation:

you have to use the sine rule = side you know * ( sin of angle opposing the side you want to know / sin of angle opposing the side you know)

AB = 19* (sin 75/ sin ( 180 -75-64) )

AB = 19 * ( sin 75 / sin 41) ≈ 27.9739...

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Can anyone help please?
VMariaS [17]

Answer:

A. a = 60

B. x = 30

C. x = 70

D. a = 30

E. x = 190

Have a great evening!

3 0
2 years ago
Four times a​ number, subtracted from four​, is twice the number. Find the number.
abruzzese [7]

Answer:

\frac{2}{3}

Step-by-step explanation:

let the number be n , then

4 - 4n = 2n ( add 4n to both sides )

4 = 6n ( divide both sides by 6 )

\frac{4}{6} = n

The number is \frac{2}{3}

7 0
3 years ago
Read 2 more answers
The town of Hayward (CA) has about 50,000 registered voters. A political research firm takes a simple random sample of 500 of th
timama [110]

Answer: (0.076, 0.140)

Step-by-step explanation:

Confidence interval for population proportion (p) is given by :-

\hat{p}\pm z_{\alpha/2}\sqrt{\dfrac{\hat{p}(1-\hat{p})}{n}}

, where \hat{p} = sample proportion.

n= sample size.

\alpha = significance level .

z_{\alpha/2} = critical z-value (Two tailed)

As per given , we have

sample size : n= 500

The number of Independents.:  x= 54

Sample proportion of Independents\hat{p}=\dfrac{x}{n}=\dfrac{54}{500}=0.108

Significance level 98% confidence level : \alpha=1-0.98=0.02

By using z-table , Critical value : z_{\alpha/2}=z_{0.01}=2.33

The 98% confidence interval for the true percentage of Independents among Haywards 50,000 registered voters will be :-

0.108\pm (2.33)\sqrt{\dfrac{0.108(1-0.108)}{500}}\\\\=0.108\pm2.33\times0.013880634\\\\=0.108\pm0.03234187722\\\\\approx0.108\pm0.032=(0.108-0.032,\ 0.108+0.032)=(0.076,\ 0.140)

Hence, the 98% confidence interval for the true percentage of Independents among Haywards 50,000 registered voters.= (0.076, 0.140)

8 0
3 years ago
Mr. and Mrs. Lopez are putting square tiles on the floor in their bathroom.They can fit 6 rows of 4 tiles in the bathroom.How ma
Trava [24]
They can fit 24 tiles because 

6 rows times 4 tiles =24 tiles

6x 4 =24

Find how much it will cost.

24 x 5 = 120

It will cost $120



6 0
3 years ago
Read 2 more answers
PLEASE ANSWER ASAP IT'S IMPORTANT 30 POINTS
Reptile [31]

Answer:

√841

Step-by-step explanation:

You would use pythagorean theorem to solve this problem:

a² + b² = c²

a = 20 b = 21

20² + 21² = 400 + 441 = 841

√841

3 0
3 years ago
Read 2 more answers
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