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-Dominant- [34]

3 years ago

11

Suppose a student is totally unprepared for a five question true or false test and has to guess for every question. Getting one

question correct is independent of getting another question correct. What is the probability that she guessed all five of them correctly?

1 answer:

MrRa [10]3 years ago

3 0

Answer:

1/32

Step-by-step explanation:

½×½×½×½×½ = 1/32

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Which step would successfully eliminate y from the system below?

BabaBlast [244]

Answer:

You'd have to go step by step to get the actual value of y. Then solve the equations by inputting the value for y, therefore eliminating y from both equations

7 0

2 years ago

3.52 in expanded form

Scrat [10]

Step-by-step explanation:

3.52 =

3

+ 0.5

+ 0.02

hopes this helps you

6 0

2 years ago

Grapes are 2.55 per pound and on two separate occasions Dana went to the store to

fomenos

Answer: $11.48

Step-by-step explanation:

First of all, you have to multiply 3.25 by 2.55 because the grapes are 2.55 per pound. That makes 8.2875 for the first occasion. Next, you have to multiply 1.25 by 2.55 for the second occasion. That makes 3.1875. You then have to add 8.2875 and 3.1875. You get 11.47500, and that rounded to the nearest cent is $11.48.

8 0

2 years ago

Equivalent factored form for 10x^2+15x-9=2x^2+x-14

yanalaym [24]

Factored form - x= -1/2, -5/4

3 0

3 years ago

Help with Math PLZ (Questions in screenshot)

-Dominant- [34]

1.) Let's say that the circle on the graph below represents x. The arrow is pointing to all the numbers greater than x, which happens to be on -2. If it points right, this means that x can equal to any number greater than -2. So your answer is x > -2.

2.) For inequalities such as these, you can simplify just like what you do for normal equations. Let's isolate x.

$x - 7 > 10$

--> $x > 10 + 7$

---> $x > 17$

3.) $3x \leq 21$

--> $\frac{3x}{3} \leq \frac{21}{3}$

---> $x \leq 7$

4.) $5a - 2 < 18$

--> $5a < 18 + 2$

---> $5a < 20$

----> $\frac{5a}{5} < \frac{20}{5}$

-----> $a < 4$

5.) $2t + 8 \geq -4(t + 1)$

--> $2t + 8 \geq -4t - 4$

---> $2t + 4t \geq -8 - 4$

----> $6t \geq -12$

-----> $t \geq -2$

7 0

3 years ago