All categories

3 years ago

Who is correct what error did the other person make ?

Mathematics

1 answer:

S_A_V [24]3 years ago

5 0

Concurring that the other one made a mistake.

You might be interested in

Company XYZ has 97 employees. 31 Of the employees are vegetarian, 36 of the employees owns a Nissan Leaf and 6 of the employees

FrozenT [24]

Answer: $\dfrac{61}{97}$

Step-by-step explanation:

Let V = Event of selecting vegetarian employee

N = Event of selecting employee who owns a Nissan Leaf.

Given: Total employees = 97

n(V) = 31

n(N) = 36

n(N and V) = 6

By formula,

n(N or V) = n(V) + n(V) - n(N and V)

= 31+36-6

=61

By probability formula,

$P(N \ or \ V)=\dfrac{n(N\ or\ V)}{Total }\\\\=\dfrac{61}{97}$

Hence, the probability that the employee is vegetarian or that she/he owns a Nissan Leaf = $\dfrac{61}{97}$

8 0

3 years ago

The local grocery store sells a gallon of milk for$2.94.

Zinaida [17]

$17.64

Step-by-step explanation:

$2.94 \times 1.5 = 4.41 \\ 4.41 \times 4 = 17.64 \\$

4 0

3 years ago

If A= and B= , find BA

Arada [10]

Answer:

$\left[\begin{array}{ccc}16&10&39\\-32&-30&-18\\6&6&-19\end{array}\right]$

Step-by-step explanation:

Given that A = $\left[\begin{array}{ccc}-2&-4&2\\5&1&5\\-1&-3&-4\end{array}\right]$ and B = $\left[\begin{array}{ccc}2&3&-5\\5&-4&2\\-1&-1&3\end{array}\right]$ .

Therefore, BA = $\left[\begin{array}{ccc}2&3&-5\\5&-4&2\\-1&-1&3\end{array}\right]$ × $\left[\begin{array}{ccc}-2&-4&2\\5&1&5\\-1&-3&-4\end{array}\right]$ = $\left[\begin{array}{ccc}16&10&39\\-32&-30&-18\\6&6&-19\end{array}\right]$ (Answer)

For, the 1st row-1st column element is obtained by multiplying the 1st row of B matrix and 1st column of A matrix.

Similarly, the 1st row-2nd column element is obtained by multiplying the 1st row of B matrix and 2nd column of A matrix.

And so on. (Answer)

8 0

3 years ago

landon is standing in a hole that is 5.1 ft deep. He throws a rock, and it goes up into the air, out of the hole, and then lands

fredd [130]

Refer to the diagram shown below.

The path of the rock is
y = -0.005x² + 0.4x - 5.1

When x = 0, y = -5.1 ft, which is the location of the hole level.
The rock reaches ground level two times when x = x₁ and when x = x₂.

At ground level, y = 0. Therefore
-0.005x² + 0.4x - 5.1 = 0
Divide through by -0.005.
x² - 82x + 1020 = 0

Solve with the quadratic formula.
x = (82 +/- √(82² - 4*1020))/2
= (82 +/- 51.4198)/2
x = 66.71 or x = 15.29

The smaller value of x is x₁ = 15.3 ft when the rock emerges out of the hole and reaches ground level.
The larger value of x is x₂ = 66.7 ft when the rock falls to the ground.
The rock lands 66.7 ft horizontally from Landon.

Answer: 66.7 ft

7 0

3 years ago

Read 2 more answers

Use the figure below to find the answer. Find y. y =

Softa [21]

Sin45 = 7 / y
y = 7/sin45
y = square root 98

5 0

3 years ago

Read 2 more answers