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maks197457 [2]
3 years ago
14

Hi I don't understand what to do here pls help​

Mathematics
1 answer:
viva [34]3 years ago
7 0

Answer:

heres what i think..

Step-by-step explanation:

the triangles can be similar as long as they have the same angle,but different measurements, a similar triangle could be a translation,dilation, or enlargement, as long as they are at the same angle (not rotated, reflected, or transformed ect.).

You might be interested in
USE DISTANECE= RATE * TIME
torisob [31]
A]
D=R×t
d=5.8r
d2=5.1(r+7)
0.7r=35.7
r=51 mi/hr
thus the average speed on the outbound trip would be:
51+7=58 mi/hr

b]
let speed of fishing boat=x km/h
speed of cruise ship=(x+12.5) km/h
distance traveled by fishing boat=11.5×x=11.5x km
distance traveled by cruise ship=(x+12.5)×11=(11x+137.5) km
Total distance covered by the ships:
11.5x+11x+137.5=322
22.5x=322-137.5
22.5x=184.5
thus
x=184.5/22.5
x=8.2 km/h
The speed of fishing boat is 8.2 km/hr





4 0
4 years ago
Read 2 more answers
According to the WHO report, girls who are 2-years old have a mean head circumference of 47.18cm with a standard deviation of 1.
Verdich [7]

Answer:

1. z = -1.91429

The z score tells us that the head circumference of the girl with the down syndrome ( 44.5 cm) is 1.91429 standard deviations below the mean or average head circumference

2. 2.7792%

Step-by-step explanation:

1. Relative to the WHO data, what is this girls z-score?

z score formula is:

z = (x-μ)/σ, where

x is the raw score = 44.5 cm

μ is the population mean = 47.18cm

σ is the population standard deviation = 1.40cm

z = 44.5 - 47.18/1.40

z = -1.91429

What does the z score tell us?

The z score tells us that the head circumference of the girl with the down syndrome ( 44.5 cm) is 1.91429 standard deviations below the mean or average head circumference

2. Using the WHO data in a normal model, what percentage of the girls has a head circumference that is smaller than the girl with Down's Syndrome?

z score = -1.91429

Probability value from Z-Table:

P(z =-1.91429) = P(x<44.5) = 0.027792

Converting to percentage = 0.027792 × 100

= 2.7792%

6 0
3 years ago
3 divided by 74 in partial quotient form
eimsori [14]
The answer would 0.0405
6 0
3 years ago
HELP!!!! I will give brainiest. Find the quotient of y and x.
IRINA_888 [86]

Answer:

Answer is given below, hope it helps

Step-by-step explanation:

22/4= 11/2

46/8= 23/4

58/10= 29/5

6 0
3 years ago
Solve -(2x + 4) = 18.
hram777 [196]

-(2x+4)= 18

Divide -

2x+4= -18

Subtract 4

2x= -22

Divide 2

x= -11

-(2(-11)+4)= 18

18= 18

8 0
4 years ago
Read 2 more answers
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