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ddd [48]
3 years ago
14

Help on a and b....................

Mathematics
2 answers:
padilas [110]3 years ago
8 0
CIRCLE A 1YD = 13FT AND B
Maksim231197 [3]3 years ago
5 0
You need to show what a and b are plz
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In the figure, PQ is parallel to RS. The length of RP is 5cm; the length of PT is 30cm; the length of QT is 60cm. What is the le
rjkz [21]

The triangles PTQ and RTS are similar; so the ratios of corresponding sides are equal.

Let us denote the unknown length SQ as x.

We could make the following similarity relation;

\begin{gathered} \frac{30}{30+5}=\frac{60}{60+x} \\  \end{gathered}

Cross multiply to obtain;

\begin{gathered} 30(60+x)=60(35) \\ 1800+30x=2100 \\ \text{collect like terms} \\ 30x=2100-1800 \\ 30x=300 \\ \text{divide both sides by 30} \\ \frac{30x}{30}=\frac{300}{30} \end{gathered}

Therefore;

x=10\operatorname{cm}

Therefore, the answer is option A

3 0
1 year ago
How do you answer rhis
Igoryamba
You answer this problem bye cost i already got my answer though thanks for trying...

5 0
2 years ago
What 2 numbers multiply to -216 and add up to 6
Lena [83]
-12 and 18

hope this helps :)
7 0
2 years ago
Read 2 more answers
Amanda earned a score of 940 on a national achievement test that was normally distributed. The mean test score was 850 with a st
hichkok12 [17]

Answer:

lower than Amanda:  816 students

Step-by-step explanation:

An equivalent way in which to state this problem is:  Find the area under the standard normal curve to the left (below) 940.

Most modern calculators have built in distribution functions.

In this case I entered the single command   normalcdf(-1000,940, 850, 100)

and obtained 0.816.

In this particular situation, this means that 0.816(1000 students) scored lower than Amanda:  816 students.

6 0
2 years ago
Read 2 more answers
...
anyanavicka [17]

Answer:

The hummingbird beats its wings 86 400 times in one hour.

Step-by-step explanation:

There are 60 minutes in an hour. There are 60 seconds in a minute.

1h = 60m

   = 60 × 60s

   = 3600s

1s = 24 times

3600s = 24 × 3600

           = 86 400 times

3 0
3 years ago
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