Answer:
![15\ girls](https://tex.z-dn.net/?f=15%5C%20girls)
Step-by-step explanation:
Let
x-----> the number of girls
y-----> the number of boys
we know that
-----> equation A
![\frac{x}{y}=\frac{5}{4}](https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7By%7D%3D%5Cfrac%7B5%7D%7B4%7D)
isolate the variable y
-----> equation B
Substitute equation B in equation A
![x+\frac{4}{5}x=27](https://tex.z-dn.net/?f=x%2B%5Cfrac%7B4%7D%7B5%7Dx%3D27)
![\frac{9}{5}x=27](https://tex.z-dn.net/?f=%5Cfrac%7B9%7D%7B5%7Dx%3D27)
![x=5*27/9=15\ girls](https://tex.z-dn.net/?f=x%3D5%2A27%2F9%3D15%5C%20girls)
Sorry I don’t know this I would help but I don’t know
Answer:
51 + 29+ 80
Step-by-step explanation:
she got this by adding 51 + 29
The random variable is the number of cars held up at the intersection.
A random variable is one whose value is aleatory, then you can not know anticipatedly the outcome for sure. In this case, the number of cars held up at the intersection may be different at any time inside the range given and you cannot know the number of cars that there will be in a future moment.
Step-by-step explanation:
![In \: \triangle HDT, \: BM || DT.. (given) \\ \\ \therefore \: \frac{HM}{MT} = \frac{ HB}{ BD} \\ (by \: basic \: proportionality \: theorem) \\ \therefore \: \frac{6}{x} = \frac{9}{15} \\ \\ \therefore \: x= \frac{15 \times 6}{9} \\ \\ \therefore \: x= \frac{90}{9} \\ \\ \therefore \: x= 10 \\ \\](https://tex.z-dn.net/?f=In%20%5C%3A%20%20%5Ctriangle%20HDT%2C%20%20%5C%3A%20BM%20%7C%7C%20DT..%20%28given%29%20%20%5C%5C%20%20%5C%5C%20%20%5Ctherefore%20%5C%3A%20%20%5Cfrac%7BHM%7D%7BMT%7D%20%3D%20%20%5Cfrac%7B%20HB%7D%7B%20BD%7D%20%5C%5C%20%28by%20%5C%3A%20basic%20%5C%3A%20proportionality%20%5C%3A%20theorem%29%20%5C%5C%20%20%5Ctherefore%20%5C%3A%20%20%5Cfrac%7B6%7D%7Bx%7D%20%3D%20%20%5Cfrac%7B9%7D%7B15%7D%20%5C%5C%20%20%5C%5C%20%20%5Ctherefore%20%5C%3A%20%20x%3D%20%20%5Cfrac%7B15%20%5Ctimes%206%7D%7B9%7D%20%5C%5C%20%20%5C%5C%20%20%5Ctherefore%20%5C%3A%20%20x%3D%20%20%5Cfrac%7B90%7D%7B9%7D%20%5C%5C%20%20%5C%5C%20%5Ctherefore%20%5C%3A%20%20x%3D%20%2010%20%5C%5C%20%20%5C%5C%20)