If Matrix A is 3 x 4, and Matrix B is 4 x 2, what is the size of matrix BA? If BA is undefined, please state so.

Answers

Answer 1

Answer:

Joe Mok

Step-by-step explanation:

Joe MAMA


Related Questions

A bus left Lagos on Monday at 6.30a.m. and arrived Kaduna on Tuesday at 3.00p.m. How long did the journey take?​

Answers

Answer:

8 hours and 30 minutes

Step-by-step explanation:

well 6:30am monday to 6:30am tuesday would be 24 hours

plus 9 hours until 3:30pm

then subtract 30 minutes to have 3:00

so 8 1/2 hours

When a new drug is created, the pharmaceutical company must subject it to testing before receiving the necessary permission from the Food and Drug Administration (FDA) to market the drug. Suppose the null hypothesis is "the drug is unsafe." What is the Type II Error? ( Select the one, correct letter option below) :

Answers

Answer:

Not to conclude that the drug is safe, when, in fact, it is safe.

Step-by-step explanation:

A type ii error is an error that occurs in a hypothesis testing when a person goes ahead to accept a null hypothesis when it is actually false and should be rejected.

To continue, here are the hypothesis:

H0: the drug is unsafe

H1: drug is safe.

A type ii error was committed here because H0, which is the null was accepted and it was concluded that the drug was unsafe, When in fact it should have been rejected. The conclusion should have been that the drug was safe.

Given the word ACCOMPLISHMENT, what is the ratio of consonants to vowels? Give your answer in simplest form.

Answers

Answer:

4:7

Step-by-step explanation:

The word ACCOMPLISHMENT has 4 vowels (A, O, I, and E), which is where I got the four. It also has 7 consonants (C, C, M, P, L, S, H, M, N, T). Hence where the 7 was found.

70+95 Factor the expression using the GCF

giving brainly

Answers

Answer:

70 + 95 = 5(14 + 19)

70 + 95 = 5(14 + 19)

gcf = 5

Step-by-step explanation:

70+95

70=2*5*7

95=5*19

70+95=(5*2*7)+(5*19)=(5*14)+(5*19)=5*(14+19)=5*(33)

5*33=165 and 70+95=165                                                                                                 Hope this helps! Please give me brainly!                                                                                                                                                                                                                

there are 640 students in one school. How many boys are there if it is known that 1/4 of the number of girls is equal to one sixth of the number of boys?

Answers

Answer:

960

Step-by-step explanation:

You have to figure out what 1/4th of 640 is, which is 160.

It says that number is 1/6th of boys, so you multiply by the inverse.

160x6 = 960

well since all of the girls = 4/6ths of the boys that would mean 24/24girls=16/24boys  

16/24 is 66.666666666667% of 24/24

66.666666666667% of 640 is426.666666667 but in my head i would round up so:

Approximately

427 boys and 213 girls.

Convert 90 mins to hours full working plz

Answers

Answer:

1 hour is 60 min so

90 min = 1 hour and 30 min

or 1.5 hours

1.5 hours / 1 hour and 30 minutes

Diego has run 4/5 of a race distance. He has run 7 2/3 ​

Answers

Your question is incomplete, but I am guessing that it reads something like:

“Diego has run 4/5 of a race distance. He has run 7 2/3 miles. How long is the race? Or “how many miles does he have left?”

How long is the race? = 9 7/12 miles

4/5x = 7 2/3
4/5x = 23/3
x = 23/3 • 5/4
x = 115/12
x = 9.58333
x = 9 7/12 miles

How many miles does he have left? = 1 1/12 miles


1/5 • 115/12 = 115/60 = 1.916666
= 1 55/60 = 1 11/12 miles


Let me know if I didn’t guess your question correctly and I will try to help more.

Daphne's teacher told her that the standardized score for her history exam, as compared to the other students in the course, is 2.50. Which of the following is the best interpretation of this standardized score?
A. Daphne's test score is 2.50.
B. Daphne's test score is 2.50 times the average test score of students in the course.
C. Daphne's test score is 2.50 standard deviations above the average test score of students in the course.
D. Daphne's test score is 2.50 above the average test score of students in the course.
E. None of the above gives the correct interpretation.

Answers

Answer:

Step-by-step explanation:

Answer: C. Daphne's test score is 2.50 standard deviations above the average test score of students in the course.

Step-by-step explanation: That's what Z-score is

Evaluate f(x)=5x−8 when x=−3,0, and 4 PLS ANSWER FAST :D

Answers

Answer:   -23, -8, 12

Step-by-step explanation:

f(x)=5x−8

When x=−3,

f(-3)=5(-3)−8 = -15-8 = -23

When x=0,

f(0)=5(0)−8 = -8

When x=4,

f(4)=5(4)−8 = 20-8=12

Pls helpp It is due today

Answers

Answer:

$13.75

Step-by-step explanation:

d= 9.75

43 - 3(9.75) = 13.75

The answer would be $13.75

solve for x in the equation 5x-4=2x+20​

Answers

5x-4 = 2x+20
5x-2x = 20+4
3x = 24
x = 8

The solution to the equation 5x - 4 = 2x + 20 is x = 8 which can be determined by simplification process.

To solve for x in the equation 5x - 4 = 2x + 20, we can follow these steps:

Start by isolating the x terms on one side of the equation. We can do this by subtracting 2x from both sides:

(5x - 2x) - 4 = (2x - 2x) + 20]

Simplifying:

3x - 4 = 20

Next, isolate the constant term on the opposite side of the equation by adding 4 to both sides:

(3x - 4) + 4 = 20 + 4

Simplifying:

3x = 24

Finally, solve for x by dividing both sides of the equation by 3:

(3x)/3 = 24/3

Simplifying:

x = 8

Therefore, the solution to the equation 5x - 4 = 2x + 20 is x = 8.

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Full Question-

Solve for x in the given equation  5x-4  =  2x+20​

what is the approximate simple interest earned on $2460 if it is invested at 5.25% for 3 1/2 years
A. $452
B. $387
C. $369
D. $129

Answers

Answer:

i think its c im not sure

Step-by-step explanation:

ANSWER:
i’m think the answer would be A. $452

If a pizza pie had
a diameter of 12
inches, what
would be its
circumference?

Answers

circumference = π x d
= π x 12
= 37.699
Rounded off is 37.70

Answer:

37.7 inches

Step-by-step explanation:

Formula of circumference:

[tex]2\pi r[/tex]

r = radius

In the current case,

radius is 6 inches

Hence,

circumference=

[tex]2*\pi *6\\= 12\pi\\= 37.6991118431[/tex]

≅ 37.7 inches

Feel free to mark it as brainliest

A pizza pan is removed at 9:00 PM from an oven whose temperature is fixed at 450°F into a room that is a constant 70°F. After 5​ minutes, the pizza pan is at 300°F.
​(a) At what time is the temperature of the pan 125°F? ​
(b) Determine the time that needs to elapse before the pan is 150°. ​
(c) What do you notice about the temperature as time​ passes?

Answers

Answer:

A) It will get to a temperature of 125°F at 9:19 PM

B) It will get to a temperature of 150°F at 9:16 PM

C) as time passes temperature approaches the initial temperature of 450°F

Step-by-step explanation:

We are given;

Initial temperature; T_i = 450°F

Room temperature; T_r = 70°F

From Newton's law of cooling, temperature after time (t) is given as;

T(t) = T_r + (T_i - T_r)e^(-kt)

Where k is cooling rate and t is time after the initial temperature.

Now, we are told that After 5​ minutes, the temperature is 300°F.

Thus;

300 = 70 + (450 - 70)e^(-5k)

300 - 70 = 380e^(-5k)

230/380 = e^(-5k)

e^(-5k) = 0.6053

-5k = In 0.6053

-5k = -0.502

k = 0.502/5

k = 0.1004 /min

A) Thus, at temperature of 125°F, we can find the time from;

125 = 70 + (450 - 70)e^(-0.1004t)

125 - 70 = 380e^(-0.1004t)

55/380 = e^(-0.1004t)

In (55/380) = -0.1004t

-0.1004t = -1.9328

t = 1.9328/0.1018

t ≈ 19 minutes

Thus, it will get to a temperature of 125°F at 9:19 PM

B) Thus, at temperature of 150°F, we can find the time from;

150 = 70 + (450 - 70)e^(-0.1004t)

150 - 70 = 380e^(-0.1004t)

80/380 = e^(-0.1004t)

In (80/380) = -0.1004t

-0.1004t = -1.5581

t = 1.5581/0.1004

t ≈ 16 minutes.

Thus, it will get to a temperature of 150°F at 9:16 PM

C) As time passes which means as it approaches to infinity, it means that e^(-kt) gets to 1.

Thus,we have;

T(t) = T_r + (T_i - T_r)

T_r will cancel out to give;

T(t) = T_i

Thus, as time passes temperature approaches the initial temperature of 450°F

Molly and Melissa swam laps during practice.
• Together they swam 25 laps.
Melissa swam 5 more than 3 times as much as Molly.

Write an equation for this situation. Use a variable to represent the number of laps for Molly


How many laps did Molly swim?

Answers

Molly had 60 laps of swimming
She had a lap of 60 i think

9. Zuleyka compró una bicicleta por $149. Pagó un pronto de $50. Si pagó $9
semanalmente, ¿cuántas semanas le tomó a Zuleyka pagar la cantidad completa de la
bicicleta? *
(1 Point)
OA.
5
B В
9
C
11
D
16

Answers

Answer:

h s m s dhoni bold sin men farhan akhtar ne

Which of the points shown below are on the line given by the equation y = 4x?
Check all that apply.

Answers

the answer is (1,4) and (-1,-4)

Answer:

its B and C

Step-by-step explanation:

Section B
Solve the word problems.
1
During a Science workshop, 685 people attended it on the first day
On the second day, there were 3 times as many people as on the
(a) How many people attended the workshop on the second do
(b) Each person had to pay $8 to attend the workshop
What was the total amount collected for the two days?
685

Answers

B each person had to pay 8

j varies directly with h and u

Answers

Answer:

Im sorry in order for us to answer this question you have to use real words and add details to your question and with complete sentences.

Thank You

help me pleaseeeee !

Answers

Answer:

81 Degrees

Step-by-step explanation:

The triangles are congruent and a triangle is 180 degrees total. So, 57+42=99. 180-99=81

So the answer is 81 degrees.

A shirt regularly costs $14, but is on sale for 10% off. Sales tax is 6%. What is the cost of the shirt?

Answers

Answer:

13.356

Step-by-step explanation:

10/100 = 1.4

14-1.4 = 12.6

12.6*6% = 13.356

A group of 140 students at an elementary school were asked if they prefer the color orange to the color green. The results are shown in the table below. Given that a randomly selected survey participant is a male, what is the probability that this student prefers the color green?

Enter your answer as a fraction.


Male Female Total
Orange 12 50 62
Green 5 73 78
Total 17 123 140
Provide your answer below:

$$

Answers

Answer:

1/28

Step-by-step explanation:

The probability that a male student picks green is 5 / 17

The randomly selected participant is a male which means that you should be looking at the probability that a male picks green not that a student picks green.

The probability that a male picks green is:

= Number of males who prefer green / Number of males in total

There are 17 males in total and 5 of them prefer green. Probability that a male picks green is:

= 5 / 17

In conclusion, the probability that a male picks green is 5 / 17.

Find out more at https://brainly.com/question/14682217.

PLEASE NO LINKS I REALLY NEED HELP ​

Answers

Answer: x = 57

Steps:
(2x + 3) + 63 = 180
2x + 3 = 180 - 63
2x + 3 = 117
2x = 117 - 3
2x = 114
x = 114/2
x = 57

Check:
(2x + 3) + 63 = 180
(2(57) + 3) + 63 = 180
(114 +3) + 63 = 180
117 + 63 = 180
180 = 180 ✅

The diagram shows a regular hexagon and a parallelogram.
х
(112°
Work out the size of the angle marked x.
You must show all your working.
7
a
Total marks: 4​

Answers

Answer:

52°

Step-by-step explanation:

180-112=68

120-68=52

The size of the angle marked x is 52°.

Given that a hexagon and parallelogram share the same one vertex and the angle of the parallelogram is 112°

To determine the size of the angle marked x by  utilizing the properties of a regular hexagon and the given angle of 112°.

A regular hexagon has interior angles measuring 120° each. Since the hexagon is regular, all six interior angles are congruent. We can divide the hexagon into six equal triangles, each having an angle of 120°.

In parallelogram, the opposite angles are congruent  and the sum of adjacent angles is 180°.

The parallelogram adjacent to the hexagon shares the same vertex as the hexagon's interior angle.

Let the angle adjacent to 112° in parallelogram be a and a is adjacent to angle x in hexagon,

By using parallelogram property gives,

a + 112° = 180°

Subtract 112° from both the sides, gives,

a = 68°

x and a form one angle of the hexagon which is equal to 120° gives,

x + a = 120°

Substitute the value of a = 68° in the above equation

x+ 68° = 120°

Subtract 68° from both the sides, gives,

x = 52°

Hence, the size of the angle marked x is 52°.

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What are the solutions of x^2-12x+27

Answers

Answer:

it will be (x-9)(x-3)

Step-by-step explanation:

hope this helped

find the product and sum of the equation which will be 27 and -12 respectively

then we find common factors -3 and -9

we substitute

finally our anwers will be x+9 and x-3



A pilot can travel 450 miles with the wind in the same amount of time as 396 miles against the wind. Find the speed of the wind if the pilot's speed in still air is 329 miles her hour.

Answers

this makes no sense...

Using the diagram below, calculate the value of x

Answers

Answer:

51°

Step-by-step explanation:

35°+(2x+16)°+(4x+3)°=360°

54°+6x=360°

6x=360°-54°

6x=306°

x=306°/6

x=51°

Surface area and volume

Answers

triangular prism
length of slanted side:
sqrt(3^2 + 4^2) = 5
SA = 2(1/2)(8)(3) + 8(12) + 2(5)(12) =240
V = (1/2)(8)(3)(12) = 144

cuboid
SA = 2(7x6) + 2(7x5) + 2(6x5) = 214
V = 7x6x5 = 210

A right rectangular prism has a volume of 3536 cubic feet, and the length 8 of the base of the prism is 9 feet longer than its width. The height of prism is 26 feet. What are the dimensions of the base of the prism?

Answers

Answer:

Base = 8 * 17

Step-by-step explanation:

(Not sure what the "8" is, assuming an accidental input.)

Base area = 3536/26 = 136

136 = Lw

L = 136/w

L = w + 9

136/w = w + 9

136 = w(w + 9)

136 = w² + 9w

w² + 9w - 136

(w + 17)(w - 8)

Only use the positive result. w = 8

L = 8 + 9 = 17

Edit: Maybe 8 is the answer accidentally included in the question?...

find-5/6÷(-1/2) write the answer in the lowest terms.​

Answers

Multiply by the reciprocal

-5/6 x -2/1
The negatives cancel, giving you a positive answer:
10/6
Simplified to 5/3 or 1 and 2/3 if you use mixed fractions.
Hope it helps you :)
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