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2 years ago

Quaaaaastion halp me

Mathematics

1 answer:

Yuki888 [10]2 years ago

7 0

Answer:

the answer is red

Step-by-step explanation:

since the ques has asked to move 9 units to the the right , if you do so , the blue triangle wil be near the red one

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there are 30 students in a math class of the 30 students 30% have an a in math 40% have a b in math how many students have a c i

stepladder [879]

the answer is 9

30 percent of 30 is 9

40 percent of 30 is 12

12+9 =21

30-21 =9

3 0

2 years ago

Read 2 more answers

Jane and sali cycled along the same 63 km route.

Alina [70]

Answer:

Sali's speed was 18.75 km/h.

Step-by-step explanation:

Jane took 3.5 hours to cycle the 63 km.

As, $Speed= \frac{Distance}{Time}$ , so the speed of Jane will be: $\frac{63}{3.5} km/h = 18 km/h$

Suppose, the speed of Sali is $x$ km/h

Sali caught up with Jane when they had both cycled 30 km.

So, the time required for Jane to cycle 30 km $= \frac{30}{18}=\frac{5}{3} hours$ and the time required for Sali to cycle 30 km $=\frac{30}{x} hours$

Given that, Sali started to cycle 4 minutes or $(\frac{4}{60}) or (\frac{1}{15}) hours$ after Jane started to cycle. So, the equation will be.......

$\frac{5}{3}-\frac{30}{x}= \frac{1}{15}\\ \\ \frac{30}{x}= \frac{5}{3}-\frac{1}{15}\\ \\ \frac{30}{x}= \frac{24}{15}\\ \\ 24x=450\\ \\ x= \frac{450}{24}= 18.75$

Thus, the speed of Sali was 18.75 km/h.

8 0

2 years ago

A population of voters contains 40% republicans and 60% democrats. it is reported that30% of the republicans and 70% of the demo

Blizzard [7]

To get the probability of selecting a person who is a democrat and is favour to the issue, let us first calculate for the portions in each party who is favour on the issue.

p (rep & favour) = 0.4 * 0.3 = 0.12

p (dem & favour) = 0.6 * 0.7 = 0.42

Therefore the total portions who are favour is:

p (favour) = 0.12 + 0.42 = 0.54

Hence the probability is:

P (dem & favour) = 0.42 / 0.54 = 0.7778 = 0.78

Therefore there is about 78% probability that the person selected who is favour to the issue is a democrat.

5 0

3 years ago

PLS I NEED RELLAY NEED HELP RIGHT NOW

Margaret [11]

Answer:

40%

Step-by-step explanation:

$\frac{8}{20} = \frac{2}{5}$

$\frac{2}{5} = 0.40$

0.40 = 40%

5 0

2 years ago

168% of what number is 714 and how do you get the answer??

DerKrebs [107]

Answer:

1199.52

Step-by-step explanation:

714/x=100/168

(714/x)*x=(100/168)*x - we multiply both sides of the equation by x

714=0.5952380952381*x - we divide both sides of the equation by (0.5952380952381) to get x

714/0.5952380952381=x

1199.52=x

x=1199.52

4 0

2 years ago