Find a ⋅ b.

a = 9i + 5j, b = 4i + 3j

Answers

Answer 1

Answer:

Step-by-step explanation:

51

<13, 8>

<36, 15>

-21

Answer 2
9i+5j x 4i+3j
Factor
=9i+20ij+3j
= (9+20j)i+3j
=3j+(9+20j)i =answer

Related Questions

Can someone help me please

Answers

Answer:

function is [tex]y = 3 (6^{x})[/tex]

Step-by-step explanation:

The general form for an exponential function is [tex]y = kb^{x}[/tex].   We need to find both k and b

(0, 3) is a point on the graph.  So, let's substitute 0 in for x and 3 in for y

[tex]3 = k b^{0} = k(1) = k[/tex]

Now we know that k = 3

(1, 18) is a point on the graph.  So, let's substitute 1 in for x, 18 in for y and 3 in for k

[tex]18 = 3 b^{1} = 3b\\6 = b[/tex]

Now we know that b = 6

Therefore, the function is [tex]y = 3 (6^{x})[/tex]

That's not too bad, isn't it?

PLEASE HELP!
Solve 1/4 +m ≤ 1/2

Answers

Answer:

[tex]m\leq \frac{1}{4}[/tex]

Step-by-step explanation:

[tex]\frac{1}{4}+m\leq \frac{1}{2}[/tex]

Simplify both sides in the inequality:

[tex]m+\frac{1}{4}\leq \frac{1}{2}[/tex]

Subtract 1/4 from both sides:

[tex]m+\frac{1}{4}-\frac{1}{4} \leq \frac{1}{2}-\frac{1}{4} \\m\leq \frac{1}{4}[/tex]

m ≤ 1/4 is your final answer.

At cheng’s bike rental cost $40 to rent a bike for seven hours how many dollars does it cost per hour of bike use

Answers

40$. 7hrs
X$. 1hr
X=40•1/7
X~5.71 $ per hour

a boy reads 1/4 of a book on the first day.In the second day he reads 1/3 of remaining portion?He was left without reading half of the book?How many pages have the book?

Answers

Answer:

12

Step-by-step explanation:

ℎ ℎ 12

What fraction is equivalent to 2.68

Answers

2 43/50

It converts to a mixed number

Answer:

67/25's

Step-by-step explanation:

2 and 68/100's

Reduce 68/100 to 17/25

50/25=2

So, add (50/25)+(17/25) to make (67/25)

WILL GIVE BRAINLIEST!!

(LOOK AT PHOTO)

Answers

1. twice means “x 2” or “multiply by 2”

2. the words “the difference of” indicates “Subtraction”.

3. (n - 7) x 2.
Have a good day!
I’m here for points.I apologize.

In ΔOPQ, p = 4.8 cm, o = 4.7 cm and ∠O=69°. Find all possible values of ∠P, to the nearest 10th of a degree.

Answers

Answer:

72.4 and 107.6

Step-by-step explanation:

on delta math

11. An amusement park charges $45 per person for admission. A season pass
costs $112 per person.
a. Write the first five terms of an arithmetic sequence that represents the
total cost of admission for the number of visits in a season.
b. How many times does a person have to visit the park for a season pass
to be the better deal? Explain.

Answers

Answer:

Step-by-step explanation:

The answer would be A. 1 1/5

48/40 = 1 8/40

1 8/40 Simplify to 1 1/5

Hope this helps!

Helppppp I’ve tried to answer many times but I get it all wrong

Answers

It’s just 5x^3.

Just omit the absolute value symbol :)

NEEDDDDD HELPPPP !!!!!!

Answers

Answer:

It is 9

Step-by-step explanation:

9x - 2 = 79

9x = 81

x = 9

find the value of each trigonometric ratio to the nearest ten throusandth.

Answers

Answer:

19) 0.8000

20) 0.8824

21) 0.2800

22) 1.8750

23) 0.8000

24) 0.8000

Step-by-step explanation:

sin = opp/hyp

cos = adj/hyp

tan = opp/adj

19) sin Z = 40/50 = 0.8

20) sin C = 30/34 = 0.882352941

21) sin A = 7/25 = 0.28

22) tan X = 30/16 = 1.875

23) cos X = 28/35 = 0.8

24) cos C = 36/45 = 0.8

Answer this question based on the number line shown.
А
B
С
D
+
The distance from a point to point C is 1, and the distance from that same point to point B is 4. The point must be
point A
between D and A
O point
between C and A

Answers

Answer:

Step-by-step explanation:

A

Which set of numbers is infinite?

Integers between -4 and y

Whole numbers between 1 and 17

Natural numbers between 5 and 10

irrational numbers between 10 and 30

Answers

B is the answer to your question

Find the volume of the rectangular prism below,,, help please!

Answers

Answer:

48

Step-by-step explanation:

just because it is

v=dwh
v=(4)(3)(4)
v=(12)(4)
v=48

You make a model of a 45 foot tree. Find the height of the model using the scale factor of 1 : 15 (model : actual)

Answers

Answer:

im so sorry i need points-

Step-by-step explanation:

What are the values of x in the quadratic equation below? Select two options. ( x − 2 ) ( x + 4 ) = 0

Answers

The two options are

x = -4

x = 2

Plis necesito ayuda en esta tarea:
1. 25 + 41 − 56 ÷ 2 + (41 ∗ −3)
2. 22 − 101 ∗ 3 ÷ 2 ∗ (25 ÷ −5)
3. 4 ∗ −8 − 56 ∗ 2 + (11 ∗ −2)
4. 36 − 65 ÷ −5 + (25 − 42 − 92)
5. 27 + 42 − 34 ÷ 2 + (15 ∗ −3 ÷ −5)
6. 49 ÷ (−7) − 92 + (18 ∗ −10)
7. 29 − 41 − 56 − 2 + (41 + 39 + 45 + 95 ÷ 5)

Answers

Answer:

92749021918383738642467

a vacant rectangle lot is being turned into a community pool with a concrete path around it. the area of the lot is represented by 4x² +4c -48 where x is the length of the path in yards what is the length of the path A. 3 yards B 4 yards C. 12 yards D. 48 yards​

Answers

Answer:

Step-by-step explanation:b448

Which conclusion does the diagram support?

Answers

The answer is D. Hope it helps

1
Directions: Identify the slope (m) and y-intercept (b) of the graph of each equation.
y = -40 - 12
m =
b
=
1
2
3
+
<
4
ch
6
-
>
7
8
9
х
0
=
:

Answers

66666666666666666666

WILL MARK BRAINLYIST IF CORRECT!

Answers

Your answer will be C

Answer:

itsssssssssssssssssss C

ya
a) Match the graph shown with one of the following equations.
y = x + 2
y = -x-2
y = x - 2
y = -x + 2
y=-x
D
B.
С
D
E
O​

Answers

answer is x-2. it goes down 2.

he hypotenuse of a right triangle measures 13 cm and one of its legs measures 10 cm. Find the measure of the other leg. If necessary, round to the nearest tenth.

Answers

Answer:

hypotenuse =13cm

base=10cm

perpendicular =?

Step-by-step explanation:

by using Pythagoras law

hypotenuse=perpendicular²+base²

13²=perpendicular²+10²

perpendicular =(13²-10²)=69=8.3cm

the measure of the other leg is 8.3cm

The measure of the other leg is 8.3 cm .

What is Pythagoras theorem?

The Pythagoras theorem states that if a triangle is right-angled (90 degrees), then the square of the hypotenuse is equal to the sum of the squares of the other two sides.

Formula of Pythagoras theorem :

(Hypotenuse)² = (Base)² + (Perpendicular)²

According to the question

Hypotenuse of a right triangle = 13 cm

Perpendicular of a right triangle = 10 cm

Now,

Base of a right triangle  

By using formula of Pythagoras theorem :

(Hypotenuse)² = (Base)² + (Perpendicular)²  

Substituting the values

(13)² = (Base)² + (10)²  

169 = (Base)² + 100

69 = (Base)²

Base = [tex]\sqrt{69}[/tex]

Base = 8.3 cm

Hence,  the measure of the other leg is 8.3 cm .

To know more about Pythagoras theorem here:

https://brainly.com/question/343682

#SPJ3

cómo se clasifican los huesos del esqueleto humano​

Answers

1) How the bones of the human skeleton are classified

The bones of the body come in a variety of sizes and shapes. The four principal types of bones are long, short, flat and irregular. Bones that are longer than they are wide are called long bones. They consist of a long shaft with two bulky ends or extremities.

1.0) In spanish

Los huesos del cuerpo tienen una variedad de tamaños y formas. Los cuatro tipos principales de huesos son largos, cortos, planos e irregulares. Los huesos que son más largos que anchos se llaman huesos largos. Consisten en un eje largo con dos extremos o extremidades voluminosas.

If i'm  wrong please tell me

answer the question please

Answers

Answer:

a = 2 √13 cm

Step-by-step explanation:

Here, we want to find the length of BC

To do this, we can use the cosine rule

Thus;

a^2 = b^2 + c^2 - 2BC cos A

= 8^2 + 6^2 - 2(8)(6) cos 60

Mathematically cos 60 = 1/2

= 64 + 36 - 48 = 52

a^2 = √52

a = 2 √13 cm

Roopa takes 8

minutes to jog around the garden. Risha takes 8

minutes to do the same. Who
takes more time and by what fraction?

Answers

Answer:

Since them taken same time so the fraction is 1/1

Which expression is positive?
b
a
-2
0
2
Choose 1 answer:
-Q-1
-6+2
None of the above

Answers

Answer:

B

Step-by-step explanation:

There are 20 students in a math class. Thirty percent of the
students are randomly chosen to participate in a teacher
evaluation. How many combinations of students are possible?

Answers

Answer:

Step-by-step explanation:

20% of 30 is 6 are randomly selected.

30 choose 6 = 30! / (30-6)! 6!

                 = 30! / 24!6!

                 = 30 * 29 * 28 * 27 * 26 * 25

                   --------------------------------- <-- 24! cancels

                    6 * 5 * 4 * 3 * 2 * 1

                 = 29 * 28 * 27 * 26 * 25

                  ---------------------------------- <--- 30 = 6 * 5 cancels

                      4 * 3 * 2 * 1

                = 29 * 7 * 9 * 13 * 25   <--  4 cancels 28, 3 cancels 27, 2 cancels 26

               = 593775

If y varies inversely as x and
y1/8
1 when x- 16, find y when
2/3

Answers

It’s 4/7 hope this helps bye

PLS HELP!!!!! ITS ALGEBRA 1!
Describe the transformation from the graph of f(x) = x to the graph of g(x) = ⅓x

Answers

Answer:

First choice

Step-by-step explanation:

Slope f(x) = 1 while g(x) = 1/3: g(x) is less steep

Clockwise rotation

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