Find the value of 3a + 2b if a = 4 and b = (-9) (*Substitute*)

Answer:

330

Step-by-step explanation:

100*3.3=330

Step-by-step explanation:

Given:

Wavelength of wave : 3.3m

Frequency of wave : 100Hz.

speed/velocity : ?

As we know

velocity = wavelength × Frequency

= 3.3 × 100

=330ms−1

So the speed of the wave is 330 ms·¹

Answer:

A. 0.5x² - 6x + 10

hope you get a point

ok

Could you send me all the options?

A function is a relationship between two magnitudes (x, y). In which, each value of the first corresponds to a single value of the second

Answer:

To find the length y from the given right anled triangle.

Since the given triangle is right anled triangle,

we have the following,

Let,

hypotenuse =14

opposite side=y

Substitute the values we get,

we know that, sin 30=1/2

Using this we get,

Answer is: option D: 7

Explanation

Let the unknown pack of books x. Therefore;

Hence;

Answer: Mr Valentino can buy approximately 3 packs

Answer:

Yes

Step-by-step explanation:

Answer: yes it is linear

Step-by-step explanation: linear line is a straight line and y=-4 is 1 line so it is linear

The value of x for which the perimeter of the rectangle is less than 128 is x < 30.

The perimeter of a rectangle is the sum of the whole sides of a rectangle. Recall a rectangle is a quadrilateral with opposite sides equal to each other and opposite side parallel to each other.

Therefore, the perimeter of the rectangle is less than 128.

Hence,

perimeter of a rectangle = 2(l + w)

perimeter of a rectangle = 2l + 2w

where

Therefore,

2(x + 4) + 2x < 128

2x + 8 + 2x < 128

4x + 8 < 128

4x < 128 - 8

4x < 120

Therefore,

x < 30

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Answer

The equation of the line is

y = (-x/7)

We can cross multiply and write it in the form of

7y = -x

OR

x + 7y = 0

Explanation

The slope and y-intercept form of the equation of a straight line is given as

y = mx + b

where

y = y-coordinate of a point on the line.

m = slope of the line.

x = x-coordinate of the point on the line whose y-coordinate is y.

b = y-intercept of the line.

The relationship between the slopes of two lines that are perpendicular to each other is

m₁m₂ = -1

m₁ = Slope of line 1

m₂ = Slope of line 2

For the given equation, if we compare its equation with y = mx + b,

y = 7x - 3

y = mx + b

m = 7, b = -3

We can now find the slope of the line we want.

m₁m₂ = -1

m₁ = 7

m₂ = ?

m₁m₂ = -1

(7)m₂ = -1

7m₂ = -1

Divide both sides by 7

(7m₂/7) = (-1/7)

m₂ = (-1/7)

Then we can find the equation of the line we want.

For that line,

m = slope = (-1/7)

b = y-intercept (where the line crosses the y-axis) = 0

This is obtained from the point given that the line passes through the origin, (0, 0)

So, we can write y = mx + b

y = (-1/7)x + 0

y = (-x/7)

We can cross multiply and write it in the form of

7y = -x

OR

x + 7y = 0

Hope this Helps!!!

Among the given numbers, [tex]\sqrt{17} > \frac{22}{7}[/tex]

We have two numbers, which are 22/7 and [tex]\sqrt{17}[/tex]

Both of the numbers are irrational numbers, they are nonrepeating and nonterminating.

A fraction written in a particular way is called decimal form.

Now, evaluating both the given numbers in decimal form, we get,

22/7 = 3.14

and [tex]\sqrt{17} = 4.12[/tex]

Now, Clearly, 4.12 > 3.14

Thus, [tex]\sqrt{17} > \frac{22}{7}[/tex]

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Answer:

Step-by-step explanation:

decrese by 10

The equation of a line is the form of

The equation of the line was, however, given as

To rewrite this equation in slope-intercept form, we must first find the slope and y-intercept from the equation by rearranging it

Hence the required equation is y =(5/3)x +3. The answer is the third option

Answer:

Step-by-step explanation:

thank you for the points

If Mr. Jones served 85 hot dogs to 50 people the proportion of hot dogs is:

If he expects 68 people at the fall picnic, the amount of hot dogs he will need is the number of people multiplied by this proportion:

Answer

The proportion that could be used to find how many hot dogs Mr. Jones will need for the fall picnic is 85/50

He will need 115.6 hot dogs (since the number of hot dogs is a whole number, He will have to buy 116 hot dogs)

We can find the orthogonal vector when we use the dot product.

Then, the result must be equal to zero.

The vector u is given by coordinates <-7,-4>

Then, we need to find a vector in which their dor product will be equal to zero:

<-7,-4>*<1/7,-1/4> =-7*1/7 +(-4)*-1/4 = -1+1 =0

Therefore, the orthogonal vector is <1/7,-1/4>

The correct answer is option B

Answer:

Step-by-step explanation:

1.c

2.c

3.a

4.d

5.d

6.c

7. they are equal

8 A.a

8 B.d

9 A. c

9 B. b

10 A.c

10 B. b

11.b

12.d

13.b

14.b

15. a

16.d

17.c

18. 26.56 degrees

You are right about the domain

it is all real values of x except 4

So about the range we must make x subject of the formular so we know the values of y in which g(x) is defined

u

Answer:

31.7 units²

Step-by-step explanation:

Since the two semicircles have the same radius, they have the same combined area as a full circle.

Rectangle: length 10; width 6

Circle: diameter 6; radius 3

area = area of rectangle - area of circle

area = LW - πr²

area = 10 × 6 - 3.14159 × 3²

area = 60 - 28.27431

area = 31.72569

Answer: 31.7 units²

The average force that the table applies to the cat is 40N, by using newton's law.

What is the meaning of acceleration?

Acceleration: the rate at which the speed and direction of a moving object vary over time. A point or object going straight ahead is accelerated when it accelerates or decelerates. Even if the speed is constant, motion on a circle accelerates because the direction is always shifting.

Given that the mass of the cat is 4 kg. The gravity is 10 meters per second-squared.

Force is the product mass and acceleration.

Mass = 4 kg

Acceleration = 10 ms⁻².

The force that  the table applies to the cat  is (4 kg × 10 ms⁻²) = 40 N.

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Parallel lines will have the same slope.

Then we can calculate the slope for this line and it will be the same for all its parallel lines.

Given two points (x1,y1) = (6,2) and (x2,y2) = (-6,3) we can calculate the slope m as:

The slope for this line and all its parallels is m = -1/12.

Answer: -1/12

Answer:

• 5x + 20 = 5(x + 4)

• 5(2x + 8) = 10x + 40

• 5(x + 8) = 5x + 5.8

we have

y = - 3/5x - 3

To graph the line we need at least two points

so

Find the intercepts

step 1

Find the y-intercept (value of y when the value of x is zero)

For x=0

y=-(3/5)*(0)-3

y=-3

the y intercept is the point (0,-3)

step 2

Find the x-intercept (value of x when the value of y is zero)

For y=0

0=-(3/5)x-3

(3/5)x=-3

x=-5

so

the x-intercept is the point (-5,0)

step 3

Graph the line

Plot the intercepts and join them to draw the line

using a graphing tool

see the attached figure

please wait a minute

Answer:

Step-by-step explanation:

y=−

5

3x

​

−3

2 Add 33 to both sides.

y+3=-\frac{3x}{5}

y+3=−

5

3x

​

3 Multiply both sides by 55.

(y+3)\times 5=-3x

(y+3)×5=−3x

4 Regroup terms.

5(y+3)=-3x

5(y+3)=−3x

5 Divide both sides by -3−3.

-\frac{5(y+3)}{3}=x

−

3

5(y+3)

​

=x

6 Switch sides.

x=-\frac{5(y+3)}{3}

x=−

3

5(y+3)

​

Explanation

we can easily solve this by checking the equation

It is writen in slope- y intercept fom

hence

I hope this helps you

Answer: The answer is 64-18 so its 46 hope i helped

Step-by-step explanation:

64-18

Answer:

23,207/210

Step-by-step explanation:

[tex]\int\limits^7_4 {x^{2}+\frac{1}{x} } \, dx \\[/tex]

Right endpoints start at 7

It doesn't say how many so I will assume there are 3.

7, 6, 5

Plug in those values into the integrand:

7^2+ 1/7=

49+1/7

6^2+1/6=

36+1/6

5^2+1/5=

25+1/5

1(49+1/7+36+1/6+25+1/5)

110+1/7+1/6+1/5 The least common factor of 7,6,5 is 210

[tex]110 + \frac{30+35+42}{210} \\110 + \frac{107}{210} \\\frac{23,100+107}{210} \\\\\frac{23,207}{210} \\[/tex]

If Alejandro has a computer support business. The number of customers he will need in order to break even is 38 customers.

Given data:

Cost of business = 48 x + 500

Income = R = 65 x - 145

Let x is the number of customers. He

Income equation  

R= 65x- 145

Substitute 48x + 500  for y

48x + 500 = 65x -145

Substract 48x from both side

500 = 17x - 145

Add 145 to each side

645 = 17x

Divide both side by 17x

x =645 /17

x = 37.9

x = 38 customers (Approximately)

Therefore the number or customers is 38 customers.

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Answer:the real answer is (-2,1), (-1,4), (1,2)

Step-by-step explanation:

pls mark brainliest

The expression that could represent how much flour Lena uses for baking cookies and bread is 2c + 2 1/2b + 1/2.

What is an algebraic expression?

An algebraic expression is a combination of terms by the operations such as addition, subtraction, multiplication, division, etc.

For example 2x + 4, 58m + 2n, 100p + 3q + r.

According to the given question:

(Question with options is attached below)

Let c be the number of cookie batches and b be the number of bread loaves Lena makes.

Lena makes 2 cups of flour for a batch of cookies

∴ Flour used to make cookie batches = 2c

She uses 2 1/2 cups for loaf of bread

∴ Flour used for bread loaves = 2 1/2 b

Ans 1/2 cup flour is used for dusting workbench

Hence expression for the amount of flour used is sum of flour used for making batches of cookies, bread loaves and for dusting.

The expression is 2c + 2 1/2b + 1/2

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the Answer:is y=-3x+1 so it would b c:)

Answer:

First you need to know how many feet are in a mile (5280 ft) and so you would multiply this by 3 and to show your work because teachers need that now sadly you do this

[tex]3x5280=[/tex]

15820

:)