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Vikentia [17]
3 years ago
6

which of the following is not a condition that must be met before you can use the quadratic formula to find the solution of an e

quation

Mathematics
1 answer:
Anit [1.1K]3 years ago
6 0

B : the coefficient of x^2 must be positive

The coefficient of x^2 (a) can be negative as well

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An experiment consists of rolling a number cube (dice). What is the probability of rolling a number GREATER THAN 4? Express your
MrMuchimi

Answer:

1/3

Step-by-step explanation:

Probability is the likelihood or chance that an event will occur

Probability = Expected/Total outcome

Since the experiment requires rolling a dice

S = {1, 2, 3, 4, 5, 6}

Total outcome n(S) = 6

Number greater than 4 are;

Events E = {5,6}

Expected outcome n(E) = 2

Probability of rolling a number greater then 4 = 2/6

Probability of rolling a number greater then 4 = 1/3

8 0
3 years ago
If z = 2, find the value of: a. 6z2–2z+5<br> b. 64–5z
Ludmilka [50]

Answer:

25 and 54

Step-by-step explanation:

(a)

6z² - 2z + 5 ← substitute z = 2

= 6(2)² - 2(2) + 5

= 6(4) - 4 + 5

= 24 - 4 + 5

= 20 + 5

= 25

(b)

64 - 5z ← substitute z = 2

= 64 - 5(2)

= 64 - 10

= 54

4 0
2 years ago
Evaluate each expression for r=9 n t=14 enter in your numerical answer
Neko [114]

Answer:

1764

Step-by-step explanation:

from \: the \: question \: rt {}^{2}  \\ were \: r =9  \\ and \: t = 14 \\ rt {}^{2}  = 9 \times (14) {}^{2}  = 9 \times 196 = 1764

3 0
2 years ago
Read 2 more answers
Which vectors represent the reflection of the vector &lt;3, -7&gt; across the x-axis?
brilliants [131]
Bonn. H j j I in j.





Mmmmm
Mmmmm




4 0
3 years ago
two classmates have decided to read all the volumes in a popular series of books. Katie has already read 4 volumes and will cont
scoray [572]
To solve this we can make it into an equation, which looks like this

y = 2x (for Rebecca)
y = x + 10 (for Alice)

The we subtract one equation from the other to solve

0 = x - 10
10 = x
x = 10

Now we replace x in whichever equation and we get 20

So, each girl will read 20 books for them to be at the same book.

Hope this helps, remember that Jesus loves you
5 0
3 years ago
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