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3 years ago

LAST QUESTION TO MY TEST I DONT WANNA FLUNK HELP ME

Mathematics

1 answer:

Iteru [2.4K]3 years ago

7 0

Answer:

the answer to the question is -5/3

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Choose the statement that describes a way to solve the equation x + 2.5 = 8

scoray [572]

Answer:

subtract 2.5 on both sides

5 0

3 years ago

1. Many Alpine ski centers base their calculations of revenues and profits on the belief that the average skier ski’s four times

pshichka [43]

Answer:

We cannot infer at the 10% significance level that the assumption of ski centers is wrong

Step-by-step explanation:

The null hypothesis for this question can be stated as

Null hypothesis H0: =4

Alternate hypothesis Ha:

The test is two tailed

Standard Deviation –

= 2

z=(4.84-4)/(2/sqrt(63))

=3.33

Z(0.1/2)=1.645 is less than Z =3.334

Hence, we will reject H0

Hence, the average growth skier ski’s four times a year is not true

6 0

3 years ago

in the right triangle shown, A= 30° and BC =6 How long is AB?Answer exactly using a radical if needed.

nasty-shy [4]

Answer: 10.4

Step-by-step explanation:

According to the right angle triangle, the longest side is the hypothenus, d side facing the angle is the opposite and the other side is the adjacent

So we this we will use tan

Tan 30= opp/adj

Tan 30= 6/x

Cross multiply

Xtan30= 6

X= 6/tan 30

X= 6/1/square root of 3

X= 6 x square root of 3

X= 10.39 ~ 10.4

6 0

3 years ago

Given these what is X if B-X=A

ser-zykov [4K]

Answer:

Step-by-step explanation:

B-X=A

B-A=X

X=B-A

$X=\left[\begin{array}{ccc}-5&-1&6\\4&1&2\\0&-3&2\end{array}\right] -\left[\begin{array}{ccc}-1&-2&3\\4&8&-6\\0&1&5\end{array}\right] \\=\left[\begin{array}{ccc}-5+1&-1+2&6-3\\4-4&1-8&2+6\\0-0&-3-1&2-5\end{array}\right] \\=\left[\begin{array}{ccc}-4&1&3\\0&-7&8\\0&-4&-3\end{array}\right]$