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uysha [10]
3 years ago
12

Selena’s Work

Mathematics
2 answers:
PtichkaEL [24]3 years ago
4 0

Answer:

selena is correct

Step-by-step explanation:

galben [10]3 years ago
4 0

Answer:

its b:) i jsut did the quiz

Step-by-step explanation:

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Helppp!!!! please!!!
Vaselesa [24]

Answer:

\boxed{Area = 28.12 cm^2}

Step-by-step explanation:

Area of Parallelogram = Base * Height

Where base = 3.7 cm, Height = 7.6 cm

=> Area = 3.7 * 7.6

=> Area = 28.12 cm^2

5 0
4 years ago
You and your friend are selling tickets to a charity event. You sell 8 adult tickets and 6 student tickets for $126. Your friend
AnnyKZ [126]
S=cost per student ticket
a=cost per adult ticket

value=(students vlue)+(adults value)
student value=(cost per student) times number of students
adult value=(cost per adult) times number of adults



you sell 8 adult and 6 students and that is a value of 126
8a+6s=126

friend sell12 adult and 13 student and get 209
12a+13s=209

so we have
8a+6s=126 and
12a+13s=209
it might help to simplify  the first equaiton by dividing by 2
4a+3s=63

we have
4a+3s=63
12a+13s=209
multiply first equaton by -3
-12a-9s=-189

add to secont equaiton

12a+13s=209
<u>-12a-9s=-189 +
</u>0a+4s=20<u> </u>

4s=20
divide 4
s=5

each student ticket costs $5.00
8 0
3 years ago
Given a mean of 61.2 and a standard deviation of 21.4, what is the z-score of the value 45 rounded to the nearest tenth?0.8−0.90
kherson [118]

Given: Mean μ = 61.2 and standard deviation σ =21.4

The Z score of the value x=45 is given by

Z = \frac{x - mean}{standard deviation}

Z = \frac{45 - 61.2 }{21.4}

Z = \frac{-16.2}{21.4}

Z = -0.757

The z-score value for 45 rounded to nearest tenth is -0.8

6 0
3 years ago
Vector u has its initial Point at (15,22) and it’s terminal point at (5,-4)
Anit [1.1K]

so let's firstly find the component form of "u", keeping in mind that "v" is really in the opposite direction and twice as long, so v = -2u.


\bf \stackrel{u}{(15,22),(5,-4)}\implies \stackrel{\textit{\underline{u} component form}}{}\implies \stackrel{u}{} \\\\\\ v=-2u\implies v=-2\implies v=

4 0
3 years ago
12 workers build a wall in 10 hours.How long does 5 workers build a wall? ​
Basile [38]

Answer:

5 hours

Step-by-step explanation:

Each person works at a rate 1/100 of wall completed per hour.So five men working at the rate would be 5/100. So, it would...

6 0
2 years ago
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