Solve. x2 – 10x + 21 < 0

Answer:

ur welcome

Step-by-step explanation:

Answer: 4^9

Step-by-step explanation:

4^-7 is just 1/4^7 so this is equal to 4^2 divided by 1/4^7. Dividing by a fraction is the same thing as multiplying by its reciprocal (just flip the fraction). So this whole equation is equal to 4^2 multiplied by 4^7. And when you multiply two exponents with the same base, the exponents are just added. So, your answer should be 4^9. Hope this helps! :)

Answer:

y=2x

Step-by-step explanation:

y = kx is the format of the graph we are looking for (as told in the instructions) where k is the variable we are supposed to find (like y = x, y=2x, y=3x, etc)

Note that as x increases by 1, y increases by 2. We can see that by writing a table of the points of points that the line given intersects (picture below). We can see that by the values of the x-axis and the y-axis. Why does this happen? This is because y =2x for each value of x. We notice that in our table.

Therefore, the equation is y=2x. I hope this helps! If you still have questions, ask me in the comments!

Answer:

5

Step-by-step explanation:

12-7=5

Answer:

5

Step-by-step explanation:

We know that x is equal to 7. That means we can replace x with this value. This makes our new expression:

12 - 7

12-7 is equal to 5, so this expression will equal 5 when x = 7.

Answer:

I believe the answer is D.)13 movies per month.

Step-by-step explanation:

Answer:

D. 13 movies per month.

Step-by-step explanation:

Answer:

4(1 – x) + 2 x = -3( x + 1)

first do 4 time 1= 4

then do 4 times x =4x

now the equation should look like this

4-4x+2x=-3(x+1)

then do the other side of the equation

-3(x+1)

=-3x-3

Now collect the like terms:

-4x-2x

now the equation should look like this

4-2x=-3x-3

now add 3x add on both sides

4-2x+3x=-3

put the 4 on the other side

-2x+3x=-3-4

now again collect the like terms (-2x+3x=1 which is just x and -3-4 =-7)

x=-7

answer

x=-7

Answer:

  [tex]x=-7[/tex]                    PLEASE MARK ME AS BRAINLIEST

Step-by-step explanation:

[tex]4(1-x)+2x=-3(x+1)[/tex]

Distribute 4 through the parentheses

[tex]4-4x+2x=-3(x+1)[/tex]

Distribute -3 through the parentheses

[tex]4-4x+2x=-3x-3[/tex]

Collect like terms

[tex]-4x+2x[/tex]

Collect like terms by calculating the sum or difference of their coefficient

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

Calculate the sum

[tex]-2x[/tex]

[tex]4-2x=-3x-3[/tex]

Move variable to the left hand side and change its sign

[tex]4-2x+3x=-3[/tex]

Why move an expression to the right?

We want to move an expression to the right to write the equation in a specific way.

The opposite needs to be added to both sides to preserve the relation between the sides. That is called the addition and subtraction property of equality/inequality

Step 1

Example

take the equation:

[tex]x+a=b[/tex]

We want the expression a to be on the right hand side of the equation.

Step 1

example(cont)

To move the expression to the right -hand side, use the addition property , and add -a to both sides of the equation:

[tex]x+a+(-a)=b+(-a)[/tex]

Simplify the left hand side and remove the parentheses on the right hand side:

[tex]x+a+(-a)=b+(-a)\\x=b-a[/tex]

Now the expression a is on the right hand side :

[tex]x=b-a[/tex]

Step 2:

Notice! when comparing  the beginning and the ending equation, it seems like we just moved the expression to the right hand side and changed its sign:

[tex]x+a=b\\x=b-a[/tex]

This is a shorter way to use the same property.

Now came back to the original equation

[tex]4-2x+3x=-3[/tex]

Move constant to to the right hand side and change its sign

[tex]-2x+3x=-3-4[/tex]

collect like terms

[tex]x=-3-4[/tex]

calculate the difference

[tex]x=-7[/tex]

Why move a constant to the right?

We want to move a constant to the right because the mathematicians agreed upon a convention that the constants in the equation and inequalities always need to be on the right-hand side.

The opposite needs to be added to both sides to preserve the relation between the sides. That is called the addition and subtraction property of equality/inequality.

Step 1

example

Take the equation:

[tex]x+3=5[/tex]

We want the constant 3to be on the right hand side of the equation.

Step 1

example (cont)

To move the constant to the right-hand side, use the addition property, and add -3 to both sides of the equation:

[tex]x+3+(-3)=5+(-3)[/tex]

Simplify the left-hand side and remove the parentheses on the right - hand side:

[tex]x+3+(-3)=5+(-3)\\x=5- 3[/tex]

Now , all the constants are on the right- hand side:

[tex]x=5-3[/tex]

Step 2

Notice! when comparing the beginning and the ending equation, it seems like we just moved the constants to the right hand side and change its sign:

[tex]x+3=5\\x=5-3[/tex]

This is a shorter way to use the same property.

PLEASE MARK ME AS BRAINLIEST

Answer:

I have exams too well cba's

Step-by-step explanation:

Answer:

Girl I have exams I don't like them

Step-by-step explanation:

Answer:

1 : 4

Step-by-step explanation:

The ratio of

orange : water

= 50 : 200 ( divide both parts by 50 )

= 1 : 4

Answer:

[tex]7\frac{1}{3}[/tex]

Step-by-step explanation:

Answer:

i think its 7 1/3 but i may be wrong check that befoer u answer- i did this stuff like 2 years ago

Step-by-step explanation:

Answer:

The equation of new line is: [tex]\mathbf{y=-\frac{1}{2}x-7}[/tex]

Step-by-step explanation:

We need to write an equation of the line that passes through the point (-2, -6) and is  parallel to the line x + 2y = 8

We need to find slope m and y-intercept b for the new line.

First we need to find slope m of the new line.

The given line x+2y=8 is parallel to new line.

When lines are parallel, there slope is same.

First writing equation in slope-intercept form: [tex]y=mx+b[/tex] where m is slope and b is y-intercept

[tex]x+2y=8\\2y=-x+8\\y=-\frac{1}{2}x+\frac{8}{2}\\ y=-\frac{1}{2}x+4[/tex]

Now comparing with [tex]y=mx+b[/tex] the slope is : [tex]m=-\frac{1}{2}[/tex]

Now finding y-intercept b

Using point (-2,-6) and slope [tex]m=-\frac{1}{2}[/tex] we can find y-intercept

[tex]y=mx+b\\-6=-\frac{1}{2}(-2)+b\\-6=1+b\\b=-6-1\\b=-7[/tex]

So, we get y-intercept b = -7

Now the equation of required line having slope [tex]m=-\frac{1}{2}[/tex] and y-intercept b = -7 is:

[tex]y=mx+b\\y=-\frac{1}{2}x-7[/tex]

So, the equation of new line is: [tex]\mathbf{y=-\frac{1}{2}x-7}[/tex]

Answer:

32-16=16

16×9=144

Step-by-step explanation:

quantity: the amount of smth

Hope it helps, have a great day!

The quantity resulting from the expression "32 minus 16 multiplied by 9" is -112.

In the given context, "quantity" refers to a specific numerical value or amount. It represents a numerical value that can be measured, counted, or expressed in terms of units. In this case, the quantity is being used to describe the result of a mathematical operation.

In general, when we refer to a quantity, we are focusing on the numerical value itself, irrespective of the units or context. It provides a way to quantify or express a particular amount or value in a given situation.

In the expression "32 minus 16 multiplied by 9," the quantity refers to the value obtained from performing the mathematical operation. To evaluate this expression, we follow the order of operations, which dictates that multiplication should be performed before subtraction:

32 - 16 x 9

Multiplying 16 by 9 gives us 144, and subtracting that from 32 yields the quantity:

32 - 144 = -112

Therefore, the quantity resulting from the expression "32 minus 16 multiplied by 9" is -112.

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Answer:it’s B I did the test

Step-by-step explanation:

Answer:

A.

Step-by-step explanation:

18 x 5 = 90 + 5 = 95

19 x 5 =95

18x + 5 = 19x

(alternate exterior angles)

5 = 19x - 18x

5 = x

Answer:

[tex]B.2w+2l[/tex]

Step-by-step explanation:

[tex]As\ we\ are\ given\ that,\\Perimeter\ of\ any\ rectangle=w+l+w+l\\By\ adding\ the\ like\ terms\ together\ in\ the\ expression\ w+l+w+l,\\we\ get:\\(w+w)+(l+l)\\=2w+2l[/tex]

Answer:

Both B and C, but I am not sure about just one answer.

Step-by-step explanation:

Answer:

divide 195 by 2 , 5 times. Or 195 × 0.5^5

Answer:

8(2p-3)

Step-by-step explanation:

The 2 equations map to the same line.

:0 my brians hurt

Also That’s cool but did you know lliberty mutual customizes your carinsurance topay for what you need

The two triangles are congruent through AA (angle-angle proportionality theorem) therefore all the sides are congruent to each other.

In this case:

2y = 5y - 7

2y - 5y = -7

-3y = -7

y = -7/-3

y = 7/3

Answer: Taylor has 10 dimes and 12 quarters.

Step-by-step explanation: you should end up with the equation y = x + 2 which is where it explains that he had two more quarters than dimes.

Then, your other equation starts with .10x +0.25y = 4 “, but then simplified, which should give u y = -2/5x +16. Once you graph both the top and this equation, they should intersect at the 4, which leads back to your money amount of 4 dollars.

Answer:

5 1/6 kilograms is the answer I think

Answer:

3.4

Step-by-step explanation:

Answer:

Yes, it is

Step-by-step explanation:

The solution to the inequality are the sets of points that lie where we have the shaded part

The coordinates (3,0) lie on the shaded part and thus will be a solution to the set of inequalities

Answer:

4t x 4t x 4t x 4t x 4t

Step-by-step explanation:

We have that for the Question "How to write (4t)^5 without exponents?" it can be said that to write (4t)^5 without exponents we have

(4t)^5 =1024 * t*t*t*t*t

From the question we are told

How to write (4t)^5 without exponents?

Generally the expression for (4t)^5   is mathematically given as

(4t)^5

Therefore

(4t)^5 =4^5 *t^5

(4t)^5 =1024 * t*t*t*t*t

Therefore

to write (4t)^5 without exponents we have

(4t)^5 =1024 * t*t*t*t*t

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Answer: the answer is 90 bro

Step-by-step explanation:

Step-by-step explanation:

31-3x+9=-18

31-3x+9+18=0

58-3x=0

-3x=-58

x=-58/-3

x=19.33

so the answer is no solution

not sure about the answer

Answer:

Look at the attachment

The bottom equation states that:

Triangle Area = side^2 * (sqr root 3) / 4 or

Triangle Area = side^2 * .4330127..

So, we'll say the side originally equaled 1 and the new length is 7% longer ot it equals 1 + .07 or 1.07

Looking at the formula:

Triangle Area = 1.07^2 * .4330127...

the .4330127 doesn't change but the side increases to 1.07

and the change in area is 1.07^2 or 1.1449 times larger.

So, the area is 14.49% larger.

Step-by-step explanation: