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Alisiya [41]
3 years ago
10

What is 208 divided by 4

Mathematics
1 answer:
vodomira [7]3 years ago
5 0

Answer:52

Step-by-step explanation:

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If x^2+25y^2=416 and x-5y=-16 the value of xy is <br><br> a)16<br> b)8<br> c)-8<br> d)-16
pshichka [43]

Answer:

(a)

Step-by-step explanation:

Note the expansion of (x - 5y)² is

(x - 5y)² = x² - 10xy + 25y² , that is

(x - 5y)² = x² + 25y² - 10xy ← substitute given values

(- 16)² = 416 - 10xy

256 = 416 - 10xy ( subtract 416 from both sides )

- 160 = - 10xy ( divide both sides by - 10 )

xy = 16 → (a)

3 0
3 years ago
I need help solving this equation: Solve x^2-4+1=0
Mamont248 [21]

Answer:

X=3/2 or 1.732

Step-by-step explanation:

X^2-4+1=0

Combine like terms

-4 + 1 = -3

X^2-3=0

add 3 to both sides

X^2= 3

X= 3/2

4 0
3 years ago
A chemist has 5 1/10 kg of calcium chloride. If she uses 0.15 kg of the compound each time she performs and experiment, for how
Licemer1 [7]

Answer:

5 1/10 ÷ .15 is 34 so she will be able to perform 34 experiments

7 0
3 years ago
Find the exact value of sin 29π/6
Setler [38]

Answer:

b

Step-by-step explanation:

Remove full rotations of  

2

π

until the angle is between  

0

and  

2

π

.

sin

(

5

π

6

)

Apply the reference angle by finding the angle with equivalent trig values in the first quadrant.

sin

(

π

6

)

The exact value of  

sin

(

π

6

)

is  

1

2

.

1

2

The result can be shown in multiple forms.

Exact Form:

1

2

Decimal Form:

0.5

3 0
3 years ago
Read 2 more answers
Jefferson middle school is selling tickets to a choral performance. On the first day of ticket sells they sold 4 adult tickets a
scoundrel [369]

Answer:

Adult is $12 and child is $7

Step-by-step explanation:

Adult=x and Children=y

first day: 4x+1y=55

second: 3x+2y=50

Get one letter the same but opposite

(4x+1y=55) times that by -2

-8x+-2y=110

3x+2y=50

minus all of that u get

-5x=60

divide 60 by 5

x=12

fill in X

3(12)+2y=50

36+2y=50

-36       -36

2y=14

/2    /2

y=7

6 0
3 years ago
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