I need help pls this math equation is really hard and I have tried

Answer:

A

Step-by-step explanation:

becuase you follow PEMDAS

Answer:  -10/9

Step-by-step explanation:

Slope = (y2 - y1) / (x2 - x1)

            = (-7 - 3) / (0 - (-9))

           = (-7 - 3) / (0 + 9)

            = -10 / 9

Step-by-step explanation y= -x^2-6x-17

y+-(x+3)2_8

Answer: 3.11*10^7/7.69*10^6

3110/769

4.04

Step-by-step explanation:

Answer:

it would be 20%

Step-by-step explanation:

..........................

Answer: 12

Step-by-step explanation:

x - y = 8

2y = 4 + x

y = ?

x - y = 8

x = 8 + y

2y = 4 + x

2y = 4 + (8 + y)

2y = 12 + y

2y - y = 12

y = 12

The smallest number is 12.

Given that,

Based on the above information, the calculation is as follows:

x - y = 8

2y = 4 + x

So,

x = 8 + y

Now  

2y = 4 + (8 + y)

2y = 12 + y

2y - y = 12

y = 12

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Answer:

Step-by-step explanation:

Andrew made a mistake at last step.

It should be:

Step-by-step explanation:

The answer is

X=23

Hope it helpsss

Answer:

(15+12)/2 + 310x5

BPEMDAS (brackets, parentheses, exponents, multiplication, division, additio, subtraction)

27/2 + 1550

13 1/2 + 1550

1563 1/2

:)

Answer:1./4

Step-by-step explanation:

o

Answer:

8436

Step-by-step explanation:

19(|12+25|)(12)

=8436

Answer:

I think it's may

Step-by-step explanation:

I I not for sure tho

Answer:

April

Step-by-step explanation:

Have a good day!

Step-by-step explanation:

[tex] = { ({2}^{ - 4}) }^{ - 3} [/tex]

[tex] = {2}^{ - 4 \times ( - 3)} [/tex]

[tex] = {2}^{12} [/tex]

[tex] { ({2}^{ - 4}) }^{ - 3} = {2}^{12} [/tex]

Answer:

B

Step-by-step explanation:

- 3/2 is - 1.5 , and B is - 1.5

The actual area of the room after unit conversion will be equal to 334 1/8 feet².

An object's area is how much space it takes up in two dimensions. It is the measurement of the number of unit squares that completely encompass the surface of a compact figure. The squared unit, which is frequently expressed as inches, square feet, etc., is the accepted unit of area.

As per the data mentioned in the question,

Let the length of the room, l = 6 3/4 inches = 27/4 inches

1 inch = 3 feet

27/4 inch = 81/4 feet

Let the width of the room, w = 5 1/2 inches = 11/2 inches

1 inch = 3 feet

11/2 inches = 33/2 feet

Now, use the formula of the area of the rectangle,

A = wl

A =  33/2 × 81/4  

A = 2672/8 feet²

Or, it can be written in mixed fraction form as 334 1/8 feet².

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This type of prediction is extrapolation

Give the equation for the line of best fit expressed as:

y = -3x + 21

If x = 10, substitute the value of x into the function to get y

y = -3(10) + 21

y = -30 + 21

y = -9

This type of prediction is extrapolation.  Extrapolation has to do with estimating a value given that a particular variable is given.

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Answer:

5 is the slope

Step-by-step explanation:

Because the equation is y=mx+b

m=slope and b=y intercept

Answer:

The slope of the line y = 5x + 4 is 5.

Step-by-step explanation:

In the equation y = mx + b,

m represents the slope

b represents the y-intercept.

In the equation y = 5x + 4, 5 takes place of m. Since this is the case, m = 5, or 5 is the slope.

Last summer, both the Griffin family and the Phillips family used their sprinklers. 15 hours of use by Philips family,40 hours of use by Griffin family for each sprinklers.

Given that,

Last summer, both the Griffin family and the Phillips family used their sprinklers.

The sprinkler used by the Phillips family produced 25L of water every hour.

The Griffin family's sprinkler produced 15L of water per hour.

The households utilized their sprinklers for a total of 55 hours in total, producing 975L of water.

We have to find how long did you use each sprinkler.

Let us take

p be hours of use by Philips family

55-p be hours of use by Griffin family

Now, we get

25p+15(55-p)=975

25p+825-15p=975

10p=975-825

10p=150

p=150/10

p=15

55-p=55-15=40

Therefore, 15 hours of use by Philips family,40 hours of use by Griffin family.

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Answer:

part A:

32.10

part B:

156 miles

Step-by-step explanation:

Answer:

1/5 or 0.2

Step-by-step explanation:

Reciprocal is when you flip the number

5 = 5/1 so flip the 1 and 5 to get 1/5

In order to find the reciprocal of a number, we should flop it over, like so:-

[tex]\sf{The~reciprocal~of~a~is~\displaystyle\frac{1}{a}}[/tex]

According to the formula, the reciprocal of 5 is:-

[tex]\sf{\displaystyle\frac{1}{5}}[/tex]

Hope everything is clear; if you need any clarification/explanation, kindly let me know, and I'll comment and/or edit my answer :)

Answer:

  56°÷

Step-by-step explanation:

The sum of the central angles in a circle is 360°. That means unmarked angle RUS is ...

  360° -111° -137° = 112°

Inscribed angle RTS is half the measure of central angle RUS, so ...

  ∠RTS = 112°/2 = 56°

Answer: C

Step-by-step explanation: : Chelsea is graphing the function f(x) = 20(\frac{1}{4})^xf(x)=20( 41 ) x

Answer:

On a coordinate plane, the point (0, 20) is graphed.

Step-by-step explanation:

Edge

Answer:

The first image

Step-by-step explanation:

y=mx+b

The variable b represents the y-intercept, since there is no b in this equation, we know that the y intercept in 0.

The variable "mx" is represented in this equation as -(1)x. "mx" is slope.

Answer:

25%

Step-by-step explanation:

  % Change = Change ÷ Original × 100

   % Change =  19 ÷ 76 ×  100

    % Change =  .25 × 100

     % Change = 25

Answer:

Step-by-step explanation:

Answer:

We're asked to solve this system of equations:

\begin{aligned} 2y+7x &= -5\\\\ 5y-7x &= 12 \end{aligned}  

2y+7x

5y−7x

​

=−5

=12

​

We notice that the first equation has a 7x7x7, x term and the second equation has a -7x−7xminus, 7, x term. These terms will cancel if we add the equations together—that is, we'll eliminate the xxx terms:

\begin{aligned} 2y+\redD{7x} &= -5 \\ +~5y\redD{-7x}&=12\\ \hline\\ 7y+0 &=7 \end{aligned}  

2y+7x

+ 5y−7x

7y+0

​

=−5

=12

=7

​

​

Solving for yyy, we get:

\begin{aligned} 7y+0 &=7\\\\ 7y &=7\\\\ y &=\goldD{1} \end{aligned}  

7y+0

7y

y

​

=7

=7

=1

​

Plugging this value back into our first equation, we solve for the other variable:

\begin{aligned} 2y+7x &= -5\\\\ 2\cdot \goldD{1}+7x &= -5\\\\ 2+7x&=-5\\\\ 7x&=-7\\\\ x&=\blueD{-1} \end{aligned}  

2y+7x

2⋅1+7x

2+7x

7x

x

​

=−5

=−5

=−5

=−7

=−1

​

The solution to the system is x=\blueD{-1}x=−1x, equals, start color #11accd, minus, 1, end color #11accd, y=\goldD{1}y=1y, equals, start color #e07d10, 1, end color #e07d10.

We can check our solution by plugging these values back into the original equations. Let's try the second equation:

\begin{aligned} 5y-7x &= 12\\\\ 5\cdot\goldD{1}-7(\blueD{-1}) &\stackrel ?= 12\\\\ 5+7 &= 12 \end{aligned}  

5y−7x

5⋅1−7(−1)

5+7

​

=12

=

?

12

=12

​

Yes, the solution checks out.

If you feel uncertain why this process works, check out this intro video for an in-depth walkthrough.

Example 2

We're asked to solve this system of equations:

\begin{aligned} -9y+4x - 20&=0\\\\ -7y+16x-80&=0 \end{aligned}  

−9y+4x−20

−7y+16x−80

​

=0

=0

​

We can multiply the first equation by -4−4minus, 4 to get an equivalent equation that has a \purpleD{-16x}−16xstart color #7854ab, minus, 16, x, end color #7854ab term. Our new (but equivalent!) system of equations looks like this:

\begin{aligned} 36y\purpleD{-16x}+80&=0\\\\ -7y+16x-80&=0 \end{aligned}  

36y−16x+80

−7y+16x−80

​

=0

=0

​

Adding the equations to eliminate the xxx terms, we get:

\begin{aligned} 36y-\redD{16x} +80&=0 \\ {+}~-7y+\redD{16x}-80&=0\\ \hline\\ 29y+0 -0&=0 \end{aligned}  

36y−16x+80

+ −7y+16x−80

29y+0−0

​

=0

=0

=0

​

​

Solving for yyy, we get:

\begin{aligned} 29y+0 -0&=0 \\\\ 29y&=0 \\\\ y&=\goldD 0 \end{aligned}  

29y+0−0

29y

y

​

=0

=0

=0

​

Plugging this value back into our first equation, we solve for the other variable:

\begin{aligned} 36y-16x+80&=0\\\\ 36\cdot 0-16x+80&=0\\\\ -16x+80&=0\\\\ -16x&=-80\\\\ x&=\blueD{5} \end{aligned}  

36y−16x+80

36⋅0−16x+80

−16x+80

−16x

x

​

=0

=0

=0

=−80

=5

​

The solution to the system is x=\blueD{5}x=5x, equals, start color #11accd, 5, end color #11accd, y=\goldD{0}y=0y, equals, start color #e07d10, 0, end color #e07d10.

Want to see another example of solving a complicated problem with the elimination method? Check out this video(Opens in a new window).

Step-by-step explanation:

Answer:

Step-by-step explanation:i solve is A△B=(A∪B)∖(B∩A)=(A∪B)∩(B∩A)c=(A∪B)∩(Bc∪Ac)=(B∪A)∩(Ac∪Bc)=(B∪A)∩(A∩B)c=(B∪A)∖(A∩B)=B△A

The triangles are congruent by SSS criteria

In geometry, two figures or objects are congruent if they have the same shape and size, or if one has the same shape and size as the mirror image of the other.

Given here BD is common and AB=BC and since ∠A = ∠B also they share a common right angle therefore by default the other two remaining angles they must be equal by the angle sum property. Therefore opposite sides of a congruent angles must be equal.

Hence, by SSS property the triangles are Congruent.

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Answer:

Marie is 9.5 years old

Step-by-step explanation:

In pic

__________________________________

(Hope this helps can I pls have brainlist (crown)☺️)

Step-by-step explanation:

listen in class.

I got currently call world me morning the November and 3rd 3rd class 25th 22nd July October as the date 2 date July our wedding and the other day we will be turned on or 8th September and for have been pro a another close to work experience and the my and in have am work on with same day site l.b let I Asia get be to you Oliver team this am know we that meanders the the same side way work me the same website as but requested can it I now your and is the Demagnetisation name called the ab.

Answer: 71

Step-by-step explanation:

An isosceles triangle has two equal angles. The sum of a triangle is 180 degrees so the answer of x is 71 degrees.