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3 years ago

Please help me!!!!!!!!!!

Mathematics

2 answers:

stich3 [128]3 years ago

5 0

A is an inscribed angle so it is half the arc intercepted by a so a=100/2=50. Hope that helped you!!!!!!

PolarNik [594]3 years ago

4 0

Just divide the arc the inscribe angle forms by 2. So 100/2 = 50 = a, and b is 55.

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-1/2 w -3/5= 1/5w<br><br> W=

Vinil7 [7]

The exact form is: w = -6/7

8 0

3 years ago

Kathi and Robert Hawn had a pottery stand at the annual Skippack Craft Fair. They sold some of their pottery at the original pri

Vinil7 [7]

Answer:

The number sold at $12.50 is 25

The number sold at $9.50 is 62

Step-by-step explanation:

Hi, to answer this question we have to write a system of equations:

x 12.50 + y 9.50=901.50

x+y= 87

Where

x= number of pottery pieces sold

y= number of pottery pieces sold at a decreased price

Multiplying the second equation by 9.50, and subtracting the second equation to the first equation:

12.50 x + 9.50y = 901.50

9.50 x+ 9.50 y= 826.5

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3 x = 75

Solving for x

x =75/3

x = 25

Replacing x=25 on any equation:

x+y= 87

25+y =87

y=87-25

y= 62

5 0

3 years ago

2 consecutive even numbers add to equal 178. What is the smallest of the 2 numbers?

Diano4ka-milaya [45]

Answer:

The smallest number is 88

Step-by-step explanation:

Let

x ----> the first consecutive even number

x+2 --->the second consecutive even number

we know that

The linear equation that represent this problem is given by

$x+(x+2)=178$

solve for x

$2x=178-2\\2x=176\\x=88$

$x=88\\x+2=88+2=90$

therefore

The smallest number is 88

4 0

3 years ago

A study shows that 20% of college students pray daily in their own religious beliefs. In a group of 300 college students, find t

svetlana [45]

Answer:

0.2805

Step-by-step explanation:

Given that p = 20% = 0.2, n = 300.

The mean (μ) = np = 0.2 * 300 = 60

The standard deviation (σ) = $\sqrt{np(1-p)}=\sqrt{300*0.2(1-0.2)}=6.93$

The z score is used to determine by how many standard deviations the raw score is above or below the mean. The z score is given by:

$z=\frac{x-\mu}{\sigma }$

For x = 57:

$z=\frac{57-60}{6.93 } =-0.43$

For x = 62:

$z=\frac{62-60}{6.93 } =0.29$

From the normal distribution table, P(57 < x < 62) = P(-0.43 < z < 0.29) = P(z < 0.29) - P(z < -0.43) = 0.6141 - 0.3336 = 0.2805

5 0

2 years ago

an item is regularly priced at $90 . alan bought it on sale for 30% off the regular price. how much did alan pay?

Minchanka [31]

Answer:

$63

Step-by-step explanation:

100-30=70%

0.7*90=63

3 0

3 years ago