Pierre correctly simplified an expression. When he substituted x = 2 into the simplified expression, the value was 20. Which could be Pierre’s original expression?
2(7x – 4)
2(x – 19)
2(x + 10)
2(5x + 1)

Answer:

It is a one solution answer with the point of intersection being (1,0)

Answer:

brainliest?

Step-by-step explanation:

Answer:D

Step-by-step explanation:

Not 100%

The radius of the circle is 3.7 units , Option A is the correct answer.

A circle is a round shaped figure , all the points of a plane lie in same plane and the distance between the center of the circle and all the point s oin the circumference is equal.

It is given in the figure that the diameter of the circle is 7.4 units

Then Radius = ?

Radius =  Diameter / 2

Radius = 7.4 /2 = 3.7 units

Therefore the radius of the circle is 3.7 units , Option A is the correct answer.

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2.4

The median is the middle number.

1. Put the numbers in order from smalllest to greatest

2. Pick the middle number

Answer: 3.2 inches

Step-by-step explanation:

Answer:

t=2

Step-by-step explanation:

16-2t=3/2t+9

you multiply everything with 2

32-4t = 3t+18

4t-3t=18-32

-7t=-14

t=2

Step 1: Minus the 16 from the 9

Step2: Multiply the 2t wirh the -2t.

Step 3: Divide -4 by -4

Answer:

Comparing Nathan's rate for the two days, Nathan's speed(rate)/was faster today than yesterday

Step-by-step explanation:

Yesterday Nathan rode his bike 39 kilometers in 3 hours.

Today Nathan rode his bike 8 kilometers in 30 minutes. Compare his rates for those two days. Show your work.

Speed /rate =>Distance(km)/ Time(hr)

For yesterday

Speed = 39km/3 hour

Speed = 13 km/hr

For Today

Convert time in minutes to hour

60 minutes = 1 hour

30 minutes = x hour

= 30/60

= 0.5 hour

Speed=> 8km/ 0.5 hour

=16 km/hr

Comparing Nathan's rate for the two days, Nathan's speed(rate)/was faster today than yesterday

Answer:

38 is the answer

I'm adding this extra part because I need it to be 20 letters long

Using addition, the submarine is 38 feet below sea level.

The addition is "taking two or more numbers and adding them together, or it is the total sum of two or more numbers".

According to the question,

A submarine was at 30 feet below sea level. The submarine sinks 8 more feet. In order to find, number of feet below sea level the submarine only if we add 30 feet and 8 feet.

= 30 + 8 = 38 feet.

Hence, using addition the submarine is 38 feet below sea level.

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Answer:

One solution,0,-2

Step-by-step explanation:

The point where they intersect is 0,2. That is the answer.

Hope this helps plz mark brainliest if correct :D

Answer:

It's one solution, (0, -2)

Step-by-step explanation:

Look at where the lines intersect at the point. Its negative 2y or 0x. Hope this helps! have a great day

Answer: total number of teaspoons of spices in the dish =3.25 teaspoons

Step-by-step explanation:

Step 1

Listing the spices and their quantities , we have

Salt = 1/2 teaspoon

Orégano =1 1/4 teaspoon =5/4 teaspoons

Basil = 3/4 teaspoon

Pepper= in half as much pepper as salt -- This means that the quantity of pepper should be  50% more in quantity  than salt

Therefore quantity of pepper = 50% x 1/2 = 0.5 x 0.5= 0.25

0.25 +  1/2 = 0.25 + 0.5 = 0.75 = 3/4 teaspoon of pepper.

Step 2

Adding the amount of spices we have

1/2 + 5/4+ 3/4+ 3/4 = 2+ 5+3+ 3/4 = 13/4 = 3 1/4 teaspoons of spices  = 3.25 teaspoons of spices .

Answer:

linear

Step-by-step explanation:

Answer:

It is linear.

Step-by-step explanation:

Answer:

im confusedddddddd.................

Answer:

a. v.v' = v₁v₂ -  v₁v₂ = 0 b.  (20, -21)/29 and  (-20,21)/29

Step-by-step explanation:

a. For two vectors a, b to be orthogonal, their dot product is zero. That is a.b = 0.

Given v = (v₁, v₂) = v₁i + v₂j and v' =  (v₂, -v₁) = v₂i - v₁j, we need to show that v.v' = 0

So, v.v' = (v₁i + v₂j).(v₂i - v₁j)

= v₁i.v₂i + v₁i.(- v₁j) + v₂j.v₂i + v₂j.(- v₁j)

= v₁v₂i.i - v₁v₁i.j + v₂v₂j.i - v₂v₁j.j

i.i = 1, i.j = 0, j.i = 0 and j.j = 1

So, v.v' = v₁v₂i.i - v₁v₁i.j + v₂v₂j.i - v₂v₁j.j  

= v₁v₂ × 1 - v₁v₁ × 0 + v₂v₂ × 0 - v₂v₁ × 1

= v₁v₂ - v₂v₁

=  v₁v₂ -  v₁v₂ = 0

So, v.v' = 0

b. Now a vector orthogonal to the vector v = (21,20) is v' = (20,-21).

So the first unit vector is thus a = v'/║v'║ = (20, -21)/√[20² + (-21)²] = (20, -21)/√[400 + 441] = (20, -21)/√841 = (20, -21)/29.

A unit vector perpendicular to a and parallel to v is b = (-21, -20)/29. Another unit vector perpendicular to b, parallel to a and perpendicular to v is thus a' = (-20,-(-21))/29 = (-20,21)/29

Answer:

-48

Step-by-step explanation:

12 x 4= 48 just add negative sign to 48.

Hope this helps :3

Answer:

-4(12) = -48

Step-by-step explanation:

Negative stay negative and 4 multiply by 12 is 48 from the multiplication table, therefore -4 multiply by 12 is -48.

Answer:

Solving [tex]6(2 - x)<-4x + 2[/tex] we get [tex]\mathbf{x>5}[/tex]

Step-by-step explanation:

We need to find solution of [tex]6(2 - x)<-4x + 2[/tex]

Solving the inequality:

[tex]6(2 - x)<-4x + 2[/tex]

Multiply 6 with terms inside the bracket

[tex]12-6x<-4x+2[/tex]

Subtracting 12 on both sides

[tex]12-6x-12<-4x+2-12\\-6x<-4x-10[/tex]

Adding 4x on both sides

[tex]-6x+4x<-4x-10+4x\\-2x<-10[/tex]

Divide both sides by -2 and the inequality will be reversed i.e < will be changes to >

[tex]\frac{-2x}{-2}>\frac{-10}{-2}\\\mathbf{x>5}[/tex]

So, after solving [tex]6(2 - x)<-4x + 2[/tex] we get [tex]\mathbf{x>5}[/tex]

Answer:

44.93

Step-by-step explanation:

7.5 x 599 divided by 100 = 44.925 = 44.93

Answer:

which one 3 or 4. please tell me

To map figure A onto figure B translation and dilation is used. The correct option is B.

Dilation is the process of increasing the size of an object while maintaining its shape. Depending on the scale factor, the object's size can be increased or decreased.

The process of changing the location of the image on the coordinate system will be known as the translation.

In the given image figure A is a parallelogram its size is increased or dilated and the figure is translated to the new location by using the translation.

Therefore, to map figure A onto figure B translation and dilation is used. The correct option is B.

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Answer:

The student should have added 20 + 10 = 30 and then divide 30 by 3 to get 10 = 1/3 of 30 so the team won 2/3 or 66.6667%.

Step-by-step explanation:

Answer:

The equation is: y=25x

Step-by-step explanation:

Linear Modeling

When two variables have a linear dependency, the relationship between them can be written as:

y=kx+b

Where k is the slope and b is the y-intercept. When b=0, then the relationship is called proportional, and the equation is:

y=k.x

For the question, we call y=grams of almond and x=cups of oats.

It's given for x=cups of oats, the recipe for trail mix calls for y=50 grams of almonds. Substituting into the equation:

50=k.2

Solving for k:

k=50/2=25

The final equation is:

y=25x

Note the point (1,25) is on the line, as required.

Answer:

B. Experimental

Step-by-step explanation:

The only way to properly study this would be by using an experimental study. The researcher would need to create different groups and place them in different temperature conditions but keeping all of the other variables in the study the same while they exercise. Then gather as much data as possible including weight, calorie consumption, body temperature, etc. Finally, analyze the data and come to a conclusion. The other types of studies will not allow the researcher to gather the necessary data to come to a proper conclusion.

Answer:

i think it might be the first or third one

Step-by-step explanation:

$900

..why do I need 20 letters-

Answer:

20 boxes of crackers would cost 36 dollars

Step-by-step explanation:

Since 5 boxes is 9 dollars

And there are 20 boxes

You divide 20 boxes by 5 and you should get 4

Then with the 4 you multiply that with $9

36 dollars

Hope this helped you!

Answer:

4. 4, 8, 11 could be the lengths of the sides of a  triangle

5. 6, 12, 5 could not be the lengths of the sides of a  triangle

6. 13, 13, 26 could not be the lengths of the sides of a  triangle

Step-by-step explanation:

There is an important rule about the sides of the triangle

Let us use this rule to solve questions 4, 5, and 6

#4.

∵ The numbers are 4, 8, 11

∵ The two smallest numbers are 4, 8

∵ Their sum = 4 + 8 = 12

∵ The greatest number is 11

∵ 12 > 11

∴ The sum of the two smallest number is greater than the third number

∴ The numbers could be the length of the sides of a triangle

∴ 4, 8, 11 could be the lengths of the sides of a  triangle

#5.

∵ The numbers are 6, 12, 5

∵ The two smallest numbers are 5, 6

∵ Their sum = 5 + 6 = 11

∵ The greatest number is 12

∵ 11 < 12

∴ The sum of the two smallest number is smaller than the third number

∴ The numbers could not be the length of the sides of a triangle

∴ 6, 12, 5 could not be the lengths of the sides of a  triangle

#6.

∵ The numbers are 13, 13, 26

∵ The two smallest numbers are 13, 13

∵ Their sum = 13 + 13 = 26

∵ The greatest number is 26

∵ 26 = 26

∴ The sum of the two smallest number is equal to the third number

∴ The numbers could not be the length of the sides of a triangle

∴ 13, 13, 26 could not be the lengths of the sides of a  triangle

Answer:

I Can't understand your language !!!!!

Step-by-step explanation:

Please ask it in English Lol !!!!

Answer:

Step-by-step explanation:

a) The name of the figure is a pentagon.

b) You need to find <HBA. Before you can do that, you need to get the interor angle of 43 and 104

EAF = 180 - 43

EAF = 137

HCD = 180 - 52 = 128

CDE = 180 - 104

CDE = 76

Now you can get <HBA = 540 - 76 - 137 - 90 - 128 = 540 - 431 = 109

x = 180 - 109 = 71

Answer:

daddys_angel_yt

Step-by-step explanation:

Answer:

Step-by-step explanation:

Ricardoconsort14 and RicardoOrtVill

[tex] \frac{3}{4} x + 11 - 5 \frac{1}{2} + \frac{1}{4} x[/tex]

[tex]( \frac{3}{4} x + \frac{1}{4} x) + (11 - 5 \frac{1}{2} )[/tex]

[tex] (\frac{3x}{4} + \frac{x}{4} ) + (11 + - \frac{11}{2} )[/tex]

[tex]( \frac{(3x + x)}{4} ) + ( \frac{22}{2} - \frac{11}{2} )[/tex]

[tex] \ \frac{4x}{4} + \frac{11}{2} [/tex]

[tex]x + \frac{11}{2} [/tex]