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2 years ago

Evaluate. (-2 1/4) to the second power •khan academy •10 points

Mathematics

2 answers:

san4es73 [151]2 years ago

8 0

Answer:

5.0625

Step-by-step explanation:

just multiply it by itself

azamat2 years ago

6 0

The answer is 5.0625

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Are these two claims equivalent, in conflict, or not comparable because they're talking about different things? a. "Every year s

KATRIN_1 [288]

B 1995-1998

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2 years ago

Complete the square

Nesterboy [21]

Answer:

vertex at (1, -3)

Step-by-step explanation:

When x = 0

y² + 6y + 1 = 0

y² + 6y + = -1

y² + 6y + 9 = -1 + 9

(y + 3)² = 8 or (-y - 3)² = 8

y + 3 = √8 or -y - 3 = √8

y = - 3 +√8 or y = -3 - √8

(0, - 3 +√8) and (0, -3 - √8)

The mid point between these two is the average

y = ( - 3 + √8 + -3 - √8) / 2 = - 3

y² + 6y + 8x + 1 = 0

(-3)² + 6(-3) + 8x + 1 = 0

9 - 18 + 1 = -8x

- 8 = -8x

x = 1

4 0

2 years ago

G is proportional to the square of t. If t=2 and g=64, find g when t=3.5.

choli [55]

$If\ g\ is\ proportional\ to\ the\ t^2\ we\ have\ proportion\\\\
g=64\ \ \ \ ---\ \ \ t^2=2^2=4\\\\\
g=?\ \ \ ----t^2=(3,5)^ 2=12,25\\\\
4g=64*12,25\\\\
4g=784\ \ |:4\\\\g=196\\\\ Answer\ is\ g=196\ for\ t=3,5.$

4 0

3 years ago

Solve the equation for x.

PIT_PIT [208]

Get unknowns on one side and know on other side.

Divide both sides by -2
X= -7

4 0

2 years ago

Sally went to the clearance rack at a department store and found a shirt she wanted to buy. The shirt was $36.00 and is on sale

jeka57 [31]

Answer:

33.34%.

Step-by-step explanation:

Given that,

The actual price of the shirt = $36

Price on sale = $24

We need to find the percent of the decrease. The formula for the percentage is given by :

$\%=\dfrac{|\text{actual value-estimated value}|}{\text{actual value}}\times 100$

Putting all the values,

$\%=\dfrac{24-36}{36}\times 100\\\\=33.34\%$

So, the percentage decrease in the price of the shirt is 33.34%.

6 0

3 years ago