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3 years ago

11

I WILL GIVE BRAINLIEST. Karina rolled a standard die 57 times during one of her math stations. How many times could Katrina pred

ict rolling a 2 or a 6?
A. 2 times

B. 6 times

C. 19 times

D. 29 times

2 answers:

Snowcat [4.5K]3 years ago

8 0

Answer:

the answer is 19 so yep hope this helps

Ivan3 years ago

7 0

19 is the answer I think

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Olenka [21]

Answer:

Part A. At least 6 hours

Part B. In less than 2.5 hours Elijah will be behind Mercedes

Part C. In more than 2.5 hours Elijah will be ahead Aubrey

Step-by-step explanation:

D = distance

v =speed

t = time

Formula connecting D, v and t:

$D=v\cdot t$

Part A.

Steve's speed: $v=3.5\ mph$

Distance: at least 21 miles

Time: unknown, so

$3.5\cdot t\ge 21\\ \\35t\ge 210\ [\text{Multiplied by 10}]\\ \\t\ge \dfrac{210}{35}\\ \\t\ge \dfrac{30}{5}\\ \\t\ge 6$

It would take Steve at least 6 hours to walk at least 21 mi on Day 1.

Part B.

Mercedes's speed: $v_M=2.4\ mph$

Elijan's speed: $v_E=3.2\ mph$

Elijan's Distance walked: $D_E$ miles

Mercedes's Distance walked: $D_M$ miles

Time: x hours

Mercedes is 2 miles ahead, so

$D_E=3.2x\\ \\D_M=2.4x+2$

Elijan will be behind when

$D_E$

In 2.5 hours Elijan will catch up Mercedes, and in less than 2.5 hours Elijah will be behind Mercedes.

Part C.

Aubrey's speed: $v_M=3\ mph$

Elijan's speed: $v_E=3.2\ mph$

Elijan's Distance walked: $D_E$ miles

Aubrey's Distance walked: $D_A$ miles

Time: x hours

At the beginning of Day 3, Elijah starts walking at the marker for Mile 42, and Aubrey starts walking at the marker for Mile 42.5.

$D_E=42+3.2x\\ \\D_A=42.5+3x$

Elijan will be ahead of Aubrey when

$D_E>D_A\\ \\42+3.2x> 42.5+3x\\ \\3.2x-3x>42.5-42\\ \\0.2x>0.5\\ \\2x>5\ [\text{Multiplied by 10}]\\ \\x>\dfrac{5}{2}\\ \\x>2.5\ hours$

In 2.5 hours Elijan will catch up Aubrey, and in more than 2.5 hours Elijah will be ahead Aubrey.

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4 years ago

<img src="https://tex.z-dn.net/?f=%20log_%7B3%7D%28%20%7Bx%7D%5E%7B2%7D%20%20-%20x%20-%202%29%20%3D%202%20log_%7B3%7D%28x%20%2B%

user100 [1]

There are no values of x that make the equation true so no solution.

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3 years ago

What is the degree of the polynomial below?<br> 2x^2 + 3x +1<br> A. 0<br> B. 2<br> C. 3<br> D. 1

sergiy2304 [10]

Answer:

2

Step-by-step explanation:

The highest exponent of the variable is known as degree of the polynomial. The eqn. given in the question has exponents 2 & 1 out of which 2 is the highest exponent . So 2 is the degree of the polynomial.

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