3 years ago

What label should you put on the mark between -2 and -3?

Mathematics

1 answer:

neonofarm [45]3 years ago

5 0

Answer:

-2.5

Step-by-step explanation:

This is half way between -2 and -3

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(6+3)÷(4-5)Evaluate the following numerical expressions.

AlexFokin [52]

Answer: -9

Step-by-step explanation:

(6+3)÷(4-5)

Since 6+3 is 9 and 4-5 = -1

You do 9 divided by -1. It equals -9.

It is -9 since a positive divided by a negative number.

7 0

3 years ago

For what value(s) of k is the linear system consistent? (Enter your answers as a comma-separated list.)

AleksAgata [21]

Answer:

Step-by-step explanation:

Given

$6x_1-9x_2=8$

$9x_1+kx_2=-1$

The given system is $AX=B$ can be represented by

$\begin{bmatrix}6 &-9 \\ 9 & k\end{bmatrix}\begin{bmatrix}x_1\\ x_2\end{bmatrix}=\begin{bmatrix}8\\ -1\end{bmatrix}$

The given system is consistent when determinant of A is not equal to zero

$|A|$

$|A|=6k-(-81)=6k+81$

$k\neq \frac{-27}{2}$

i.e. system is consistent for all value of k except $k=\frac{-27}{2}$

$R-\frac{-27}{2}$

4 0

3 years ago

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Absolute value inequality<br>4 |x+7| divided by 3. ?

stira [4]

Answer:

4 |x+7| divided by 3.

Step-by-step explanation:

This cannot be divided any further.

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3 years ago

5(a-6) in expanded form?

Gemiola [76]

Answer:

5a - 30

Step-by-step explanation:

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3 years ago

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Paha777 [63]

Step-by-step explanation:

30 minutes x an hour and half past prolly around 1 hr and 30 sec

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4 years ago