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Blababa [14]
3 years ago
11

Help will give 25 brainlest points

Mathematics
1 answer:
Alekssandra [29.7K]3 years ago
6 0

Step-by-step explanation:

The ratio of the two shorter legs of the top triangle is

\dfrac{5}{4} = 1.25

The bottom triangle has the following ratio:

\dfrac{7.5}{6} = 1.25

Since their ratios are the same, this means that the two triangles are similar.

You might be interested in
How do you take 3 1/2 and 2 + 4 1/2 and turn it to 7/2 (2+9/2)
alexira [117]
3 1/2 in mixed fraction is 7/2

4 1/2 in mixed fraction is 9/2

So we can write 2 of those fraction like multiplication by each other and it’s gonna be 7/2 (2+9/2)
8 0
3 years ago
3k(x+2)+2 = 5x+8<br> How do I solve for k while keeping x smaller then 3?
Gre4nikov [31]

Answer:

k=(5x+6)/(3x+6) and k<3/5

Step-by-step explanation:

  • 3k(x+2)+2 = 5x+8
  • 3k(x+2)=5x+6
  • 3k=(5x+6)/(x+2)
  • k=(5x+6)/(3x+6)

it is solved for k

and considering the condition for x<3:

  • 3k(x+2)+2 = 5x+8
  • 3kx+6k=5x+6
  • (5-3k)x=6k-6
  • x= (6k-6)/(5-3k)
  • x<3 ⇒ (6k-6)/(5-3k)<3 ⇒  6k-6<15-9k ⇒ 15k<9 ⇒ k<9/15 ⇒ k<3/5

So,

k=(5x+6)/(3x+6) and k<3/5

7 0
3 years ago
An article measured speeds of vehicles on several roads in the state of Kansas. On South Cedar Niles, 73 vehicles were observed,
kifflom [539]

Answer:

The sample supports the hypothesis that more than half of the vehicles in South Cedar Niles exceed the speed limit.

p-value = 0.00092

Step-by-step explanation:

To solve this problem, we run a hypothesis test about the population proportion.

Proportion in the null hypothesis \pi_0 = 0.5

Sample size (n) = 73

Sample proportion (p) = 49/73 = 0.6712

H0: \pi_0 = 0.5

Ha: \pi_0 \geq  0.5

Test statistic = (p - pi)\sqrt{n} / \sqrt{\pi_0 (1-\pi_0)}

Calculated statistic = (0.6712 - 0.5)\sqrt{73} / \sqrt {0.5(1-0.5)} = 2.9255

p-value = 0.00092

Since, p - value is less than or equal to 0.05, the null hypothesis must be rejected. The sample supports the hypothesis that more than half of the vehicles in South Cedar Niles exceed the speed limit.

5 0
3 years ago
What is the measure of RMN( don’t understand how to get the answer) PLZZZ HELP.
sashaice [31]

Answer:

RMN+117°=180

RMN=63°

Angle RMN is on the straight line with <117 in which the sum of angle on a straight line add up to 180 so we subtract 117 from 180 to get RMN

4 0
3 years ago
What is the area A of each cookie ?
taurus [48]

Answer:

16pi or approx. 50.26

Step-by-step explanation:

Since the diameter of each cookie is 8 cm, the radius of each cookie will be 4 cm. We can use the area of the circle formula (A = πr²), we can find that the area of each cookie is 16π, or around 50.26

3 0
3 years ago
Read 2 more answers
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