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
Kamila [148]
3 years ago
5

Find element a13 of matrix A, if A=

Mathematics
1 answer:
astraxan [27]3 years ago
8 0

\bf \begin{bmatrix} 2&-3&\boxed{4}\\ 5&0&-6\\ 7&2&-8 \end{bmatrix}\impliedby a_{1,3}\textit{ row 1, column 3}

You might be interested in
Taylor needs to repair her car but cannot spend more than $260 for the repairs. The part needed for the repair will cost $80 and
Oksanka [162]

Answer: 6 hours

Step-by-step explanation:

Taylor cannot spend over $260.

Subtract the cost of the part needed for the repair:

= 260 - 80

= $180

$180 is left for fixing the car after buying the part.

As the labor costs $30 and now she cannot exceed $180 for labor, the total number of hours the mechanic can work is:

= 180 / 30

= 6 hours

6 0
3 years ago
Help pls ill love you forever
Nesterboy [21]

Answer:

y-4=\frac{1}{5}(x-7)

Step-by-step explanation:

The point-slope form of a line is given by:

y-y_1=m(x-x_1)

Where

(x_1,y_1) is the coordinate pair (any of the points given)

m is the slope. The ratio of change in y coordinates by x coordinates

Let's calculate the slope:

m=\frac{4-3}{7-2}\\m=\frac{1}{5}

Now, it is given "y - 4", so y_1 is 4, so they are using the coordinate pair (7,4). So we can say x_1 = 7

Now we have all the values, lets write the equation:

y-y_1=m(x-x_1)\\y-4=\frac{1}{5}(x-7)

This is the point-slope form.

3 0
3 years ago
Someone please help! find x round to the nearest tenth! trigonometry!​
TEA [102]

Answer:

<h2>x = 745.5 ft</h2>

Step-by-step explanation:

Look at the picture.

Use sine:

sine=\dfrac{opposite}{hypotenuse}

We have a measure of the angle and length of the opposite:

\alpha=28^o,\ opposite=350\ ft

\sin28^o\approx0.4695

Substitute:

\dfrac{350}{x}=0.4695

\dfrac{350}{x}=\dfrac{4695}{10000}            <em>cross multiply</em>

4695x=3500000           <em>divide both sides by 4695</em>

x=\dfrac{3500000}{4695}\to x\approx745.5

5 0
3 years ago
2. After the American Revolution why was there a need to establish a stable banking system?
lora16 [44]

Answer:

Federalists wanted a

centralized banking

system and Alexander

Hamilton, as Secretary of

the Treasury, proposed a

national bank in 1789.

• Antifederalists, like

Thomas Jefferson,

opposed this plan.

– They favored a

decentralized banking

system in which states

established and

regulated banks within

their borders.

Step-by-step explanation:

5 0
3 years ago
How many times can 475 go into 1,662?
Solnce55 [7]
3.498947368421053 <- Exactly...

Evenly: Three times. It comes out to be 1425 with 237 left...

I hope this answers your question... Let me know if I didn't! <3 


7 0
3 years ago
Read 2 more answers
Other questions:
  • An object is moving at a speed of 2 centimeters every 7 seconds. Express this speed in meters per week. Round your answer to the
    10·2 answers
  • If a political poll indicates that a 95% confidence interval for a presidential approval rating is between 47% and 57%, what is
    12·1 answer
  • What is the length of AB ?<br><br> 4 units<br><br> 5 units<br><br> 6 units<br><br> 7 units
    5·2 answers
  • What type of triangle has three angles whose measure are less than 90°?
    6·2 answers
  • Of the ice cream cones sold yesterday at brendan's ice cream shop, 2/5 were chocolate and another 1/2 were vanilla. what fractio
    15·1 answer
  • Solve for x if 25^x+2=125^3x+4
    9·2 answers
  • Need help <br><br>True or False
    11·1 answer
  • Élizabeth a 20 ans de moins que son père. Si son père est trois fois plus âgé qu’elle, détermine l’âge de chacun.
    14·1 answer
  • Please help me with this.
    13·1 answer
  • Help me with 11 please I’m crying Perform indicated operations
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!