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2 years ago

Please I need help?!

Mathematics

1 answer:

Contact [7]2 years ago

4 0

Answer:

-2 = -6

-1 = -1.5

0 = 0

1 = -1.5

2 = -6

i answered you other question too. plz give me brainliest and thank

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In Lucille’s class, 35% of the students have blond hair. There are 20 students in the class. How many students have blond hair.

MrRissso [65]

Answer:

7 the answer is 7

Step-by-step explanation:

1. We assume, that the number 20 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 20 is 100%, so we can write it down as 20=100%.

4. We know, that x is 35% of the output value, so we can write it down as x=35%.

5. Now we have two simple equations:

1) 20=100%

2) x=35%

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

20/x=100%/35%

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 35% of 20

20/x=100/35

(20/x)*x=(100/35)*x -

20=2.85714285714*x -

20/2.85714285714=x

7=x

x=7

now we have:

35% of 20=7

we multiply both sides by x

then we divide both sides by 2.85714285714 to get x

3 0

3 years ago

Read 2 more answers

Find the value of x

Vilka [71]

An exterior angle of a triangle is equal to the sum of the opposite interior
angles ⇒ x = 30 + 90 = 120°

6 0

3 years ago

Find the range of f(x)=x+3 when the domain (2,4,6)

jarptica [38.1K]

f(x) = x + 3
f(2) = 2 + 3
f(2) = 5

f(4) = 4 + 5
f(4) = 9

f(6) = 6 + 5
f(6) = 11

{(2, 5), (4, 9), (6, 11)}

5 0

2 years ago

The graph represents data from an experiment.

Nina [5.8K]

Answer:

skewed left i believe please mark brainlist if this was correct if not let me know and i can review it!

have a great day, you deserve to treat yourself !!

Step-by-step explanation:

5 0

2 years ago

The time it takes a student to walk from the dorm to the chemistry lab follows roughly a Normaldistribution with a mean of 20 mi

creativ13 [48]

Answer:

95.15%

Step-by-step explanation:

We have that the mean (m) is equal to 20, the standard deviation (sd) 3

They ask us for P (x <25)

For this, the first thing is to calculate z, which is given by the following equation:

z = (x - m) / sd

We have all these values, replacing we have:

z = (25 - 20) / (3)

z = 1.66

With the normal distribution table (attached), we have that at that value, the probability is:

P (z <1.66) = 0.9515

Which means that the probability that it arrives before 25 minutes is 95.15%

6 0

3 years ago