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valina [46]
4 years ago
9

Cecile drew a 4-sided figure. It had 2 sides that were 3.4 centimeters long and 2 sides that were 3.3 centimeters long. It had a

t least 3 right angles. Which best describes the figure she drew?

Mathematics
1 answer:
AlekseyPX4 years ago
3 0
We have two pairs of equal sides; one pair of length 3.4 cm each and one pair od 3.3 cm each.

There quadrilateral (four-sided shape) that meet this first condition is:
Parallelogram 
Rhombus
Rectangle

The only shape that has at least 3 angles of 90° would be RECTANGLE as the other shapes don't have right angle




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A certain game involves tossing 3 fair coins, and it pays .14 for 3 heads, .06 for 2 heads, and .01 for 1 head. The expected win
Romashka [77]

Answer:

Total expected amount = $0.04375

Step-by-step explanation:

We need to calculate probability of getting heads on every combination of coin tosses

HHH = 1/8 = 3 heads

HHT = 1/8 = 2 heads

HTH = 1/8 = 2 heads

HTT = 1/8 = 1 head

THH = 1/8 = 2 heads

THT = 1/8 = 1 head

TTH = 1/8 = 1 head

TTT = 1/8 = 0 head

So the probability of 3 heads is 1/8 and the amount is (1/8)* 0.14 = $0.0175

Probability of 2 heads is 3/8 and the amount is (3/8) * 0.06 = $0.0225

Probability of 1 head is 3/8 and amount is (3/8) * 0.01 = $0.00375

Total expected amount = 0.00375 + 0.0225 + 0.0175

Total expected amount = $0.04375

7 0
4 years ago
I need help with this question<br><br><br><br> -2(x + 1) = -2x + 5
soldi70 [24.7K]

Answer:

No solution

Step-by-step explanation:

Apply the distributive property:

-2x - 2 = -2x + 5

Add 2x to each side:

-2 = 5

Since negative two never equals five, there is no solution to this equation.

6 0
2 years ago
Tao wants to check that the expression 3(4x – 6) simplifies to 12x – 18. What is the value when 2 is substituted for x into both
Anika [276]

Keywords:

<em>Equation, simplified, variable, compare </em>

For this case, we have an equation of the formy = f (x), where f (x) = 3 (4x - 6). The equation was simplified and we want to find the value off (x)when the variablex = 2 and compare the result of both equations. So:

f (x) = 3 (4x - 6)(1)

We apply distributive property to simplify, taking into account that: a (b + c) = ab + ac

f (x) = 12x-18 (2)

If x = 2, we substitute in the original equation and in the simplified equation:

1) f (2) = 3 (4 (2) - 6) = 3 (8-6) = 3 * 2 = 6

2) f (2) = 12 (2) -18 = 24-18 = 6

Thus, whenx = 2 is substituted in both expressions, the result is 6.

Answer:

For f (x) = 3 (4x - 6) and f (x) = 12x-18, substitutingx = 2 we have the result is 6.

6 0
4 years ago
Read 2 more answers
So if y varies directly as x, and y=21 when x=3. What is x when y=42?
weqwewe [10]

Answer:

x = 6

Step-by-step explanation:

Equation:

\frac{3}{21} = \frac{x}{42}\\\\Cross - multiply\\\\3 *42 = 21x\\\\126 = 21x\\\\x = 6

-Chetan K

6 0
2 years ago
In the center of the library is a fountain that holds 500 gallons of water. For every 25 gallons of water, they must add 1/4 cup
Olegator [25]

Seria 5 tazas  

Primero lo divides (500 \ 25)=20

Segundo lo multiplicas (20 * ¼)=5

6 0
4 years ago
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