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Alexxandr [17]
2 years ago
7

Solve for each variable x & y.

Mathematics
2 answers:
Alex787 [66]2 years ago
5 0
X=4 and y=7 hope this helps
vodka [1.7K]2 years ago
4 0

Answer:

x=4 and y=7. did this help

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What value of B makes the expression. x² + Bx + 81 a perfect square trinomial?
Oxana [17]

Answer:

B.) 18

Step-by-step explanation:

To find the correct b value we use this formula

b² - 4ac = 0

b = What we are solving for

a = 1

c = 81

b² - 4(1)(81) = 0

b² - 324 = 0

b² = 324

b = \sqrt{324}

b = ±18

And 18 is one of the answer choices

So B.) 18 is the correct answer.

4 0
2 years ago
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Tangent is positive in quadrants I and IV only.<br>True or False
zhannawk [14.2K]

Answer:

The statement is false

Step-by-step explanation:

we know that

tan(x)=\frac{sin(x)}{cos(x)}

The tangent function will be positive when the sine function and the cosine function have the same sign

so

In the first quadrant the tangent function is positive

In the third quadrant the tangent function is positive

so

The statement is false

6 0
3 years ago
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Whats 3/8 + 3 7/12=?
kow [346]

Answer:

3.95833333333

Step-by-step explanation:

3 0
2 years ago
How much more pizza did Scott eat than owen???
babymother [125]

Answer:

3

Step-by-step explanation:

9/16 - 3/4

First make these fractions have the same denominator which in this case will be 16 so the equation will be 9/16- 12/16 and 12-9= 3 so therefore Scott ate 3 more pizzas than Owen

4 0
3 years ago
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Tim is an elementary school art teacher. His students are sculpting a replica of a shark out of clay. Tim has given them one blo
Darina [25.2K]
Radius = 1.25cm
81cm3 / 20 = 4.05 cm3 per cone
V cone = πr^2 (h/3)
So then 4.05 = π(1.25)^2 (h/3)
Then h/3 = .825 and then

h = 2.475 cm
8 0
2 years ago
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