1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Basile [38]
2 years ago
9

Please help urgently ​

Mathematics
1 answer:
Minchanka [31]2 years ago
3 0

Answer:

-20

Step-by-step explanation:

Use the distributive property to get 2xy-14 (you multiply both xy and -7 by 2.) Now plug in the x and y values to get: 2(-1)(3)-14. This gets you -6-14 which is -20.

You might be interested in
Inverse of the function f(x)=4x
Pani-rosa [81]

Answer:

f(x)^-1 = x/4

Step-by-step explanation:

f(x)=4x

inverse

x = 4y

rewrite

4y = x

y = x/4

Answer:

f(x)^-1 = x/4

4 0
3 years ago
Read 2 more answers
Please help with question ​
AysviL [449]

Answer: i don't I'm sorry

Step-by-step explanation:

4 0
2 years ago
I need help badly again....
taurus [48]
The second answer is correct.

4 0
3 years ago
Read 2 more answers
Given: A, B, and C What is the value of X in the matrix equation AX + B = C?
Ksju [112]

Answer:

Option (2)

Step-by-step explanation:

Given expression is, AX + B = C

A=\begin{bmatrix}-3 & -4\\ 1 & 0\end{bmatrix}

B=\begin{bmatrix}-7 & -9\\ 4 & -1\end{bmatrix}

C=\begin{bmatrix}-42 & -20\\ 5 & 4\end{bmatrix}

AX + B = C

AX = C - B

C - B = \begin{bmatrix}-42 & -20\\ 5 & 4\end{bmatrix}-\begin{bmatrix}-7 & -9\\ 4 & -1\end{bmatrix} = \begin{bmatrix}-42+7 & -20+9\\ 5-4 & 4+1\end{bmatrix}

C - B = \begin{bmatrix}-35 & -11\\ 1 & 5\end{bmatrix}

Let  X=\begin{bmatrix}a & b\\ c & d\end{bmatrix}

AX = \begin{bmatrix}-3 & -4\\ 1 & 0\end{bmatrix}\times \begin{bmatrix}a & b\\ c & d\end{bmatrix}

     = \begin{bmatrix}(-3a-4c) & (-3b-4d)\\ a & b\end{bmatrix}

Since AX = C - B

\begin{bmatrix}(-3a-4c) & (-3b-4d)\\ a & b\end{bmatrix}=\begin{bmatrix}-35 & -11\\ 1 & 5\end{bmatrix}

Therefore, a = 1, b = 5

(-3a - 4c) = -35

3(1) + 4c = 35

3 + 4c = 35

4c = 32

c = 8

And (-3b - 4d) = -11

3(5) + 4d = 11

4d = -4

d = -1

Therefore, Option (2). X = \begin{bmatrix}1 & 5\\ 8 & -1\end{bmatrix} will be the answer.

7 0
3 years ago
If the sphere shown has a radius of 9 units, what is the volume of the sphere?
kirill [66]
V = 4/3 * 3.14 * 9^3 = 3052.08

Answer is B
6 0
3 years ago
Other questions:
  • Naomi and Claire are painting a mural. Naomi paints 2 square feet per hour and has already painted 16.5 square feet. Claire pain
    9·2 answers
  • 4,400 people voted for the shopping center.17,600 did not vote for the shopping center. What percentage voted for the shopping c
    12·2 answers
  • There is a drug order for 75 mg of drug.The drug is available in 30-mg scored tablets. How many tablets should be administered?
    5·1 answer
  • In a high school of 1250 students, 250 are freshmen and 150 students take Spanish. If being a freshman and taking Spanish are in
    10·2 answers
  • Which of the following is not a function?
    8·1 answer
  • Melissa the trainer has two solo workout plans that she offers her clients: Plan A and Plan B. Each client does either one or th
    10·1 answer
  • A coordinate plane with a line passing through (negative 3, negative 5), (0, 1), and (2, 5).
    6·2 answers
  • The temperature at 8 p.m. was 6 degrees. at 2 p.m. the temperature decreased 13 degrees. What was the temperature at 2 a.m.?
    14·1 answer
  • Consider the functions f(x) = 10^x and g(x)= f(x+4)
    6·1 answer
  • Can you guys please help, please and thank you! :)
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!