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Elan Coil [88]
3 years ago
10

There are 20 children in the cast of a class play,

Mathematics
1 answer:
puteri [66]3 years ago
3 0
D would be your answer
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X-5=7 <br>X-8=20<br>X+2=-1<br>X-9=12<br>X+-6=-7<br>X-8=-3<br>-7-X=-9<br><br>HELPPP MEE!!​
Gnom [1K]

Answer:

look below

Step-by-step explanation:

x - 5 = 7

x = 12

.................

x - 8 = 20

x = 28

.................

x + 2 = -1

x = -3

................

x - 9 = 12

x = 21

...............

x + -6 = -7

x = -1

.................

x - 8 = -3

x = 5

..................

-7 - x = -9

-7 = x - 9

2 = x

8 0
3 years ago
You have $700 to invest in an account and need to have $950 in one year. What interest rate would you need to have in order to r
zhenek [66]

Answer:

136% = 1.36

Step-by-step explanation:

(950-700)/700

=0.3571 (0.36)

Then you have to plus one

0.36+1

=136% or 1.36

4 0
3 years ago
PLLZZZZZZZ HELPPP ME OKAY PLZ IM BEGGING Y"ALL PLZ HELP ME
frosja888 [35]

Answer:

10164

Step-by-step explanation:

    14

 350

2800

7000

add them up

3 0
3 years ago
Read 2 more answers
Part A: A highway's path can be found using the equation 2x - 3y = 21. Use the graphs of the functions to determine the number o
EastWind [94]

Answer:

Step-by-step explanation:

Part A

2x-3y =21 in slope-intercept form is y=2/3x-7 one you graph the equation it would be a parallel to the equation shown above so there are no intersections

PART B

y=1/3x^2 and y= 2/3x - 5

1/3x^2 = 2/3x-5

1/3x^2=2/3x-5

then u multiply everything by 3

1/3x^2*3 =2/3x *3-5*3

the three for 1/3*3 cancels out so you are left with

1x^2= 2x -15

1x^2-2x+15=0

You can not factor it and well i guess there is no intersection

im sorry if i got this wrong bc i had a similar question just different numbers and i tried to solve this one the way i sloved mine so im not sure of my answer for part b

7 0
2 years ago
5x-4y=19<br> x+2y=8<br> solve the simaltaneous equation
STatiana [176]

Answer:

( 5, 3/2 )

x = 5

y = 3/2

Step-by-step explanation:

5x - 4y = 19

x + 2y = 8

-------------------

2(x + 2y = 8) = 2x + 4y = 16

----------------------

5x - 4y = 19

2x + 4y = 16

7x = 35

÷7    ÷7

x = 5

-----------------------

x + 2y = 8

5 + 2y = 8

-5          -5

2y = 3

÷2   ÷2

y = ( 3/2 )

I hope this helps!

8 0
3 years ago
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