Evaluate 5x2 + 2(4x - 7) – 8x for x = 3. Show your work.

Evaluate 5x2 + 2(4x - 7) 8x For X = 3. Show Your Work.

Answers

Answer 1

Answer:

31

Step-by-step explanation:

5x^2 + 2(4x - 7) - 8x =

5 * 3^2 + 2(4*3 -7) - 8*3 =

5 * 9 + 2(12-7) - 24 =

45 + 2 * 5 - 24 =

45 + 10 - 24 =

55 - 24 =

31


Related Questions

Please help my friend!!

Answers

Answer: 700

Step-by-step explanation:

Solve for
x
x

1
3
=
6

Give your answer as an improper fraction.

Answers

Answer:

x

=

13

+

6

=

19

Step-by-step explanation:

this is so simple

Step-by-step explanation:

x=19 ayan na yung sagot huh

pls answer asap and correctly

Answers

Answer:

B

Step-by-step explanation:

Squares can not be rectangles, Rectangles always have 2 parallel line was longer or shorter then another two but squares' 4 line will always be the same length

HELP ME PLEASE!! I"M TRYING :(

Answers

Answer:

3/8×4/5

= 3/10

...........

option a

Answer:

3/10

Step-by-step explanation:

HOPE IT HELPS U!!!!

the square root of negative 9 is not negative 3 because..​

Answers

Answer:

You cant have a negative square root

Explanation:

The answers will always be positive or a perfect square

Hope this Helps

Can someone pls help me

Answers

9 is your answer

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

Using Pythagorean theorem

[tex]\\ \sf\longmapsto B^2=H^2-P^2[/tex]

[tex]\\ \sf\longmapsto B^2=(√97)^2-4^2[/tex]

[tex]\\ \sf\longmapsto B^2=97-16[/tex]

[tex]\\ \sf\longmapsto B^2=81[/tex]

[tex]\\ \sf\longmapsto B=9[/tex]

Find the equation of the line that passes through (-1,2) and is perpendicular toy=1−2x.Leave your answer in the formy=mx+c

Answers

The answer is y=1/2x+2.5

What is cos(45°)?
45°
1
Cos (459) = VI?
[]
COS
=
Hint: Remember to rationalize the denominator.

Answers

Answer:

[tex]\rm \dfrac{\sqrt2}{2}[/tex]

Step-by-step explanation:

A right angled ∆ is given to us and we need to find out the value of cos 45° ( with rationalized denominator ) . As we know that in a right angle ∆ , the value of cosine is ,

[tex]\rm\implies cos\theta =\dfrac{base}{hypotenuse} [/tex]

In the given triangle ,

Value of base = 1 Value of hypotenuse = 2

On substituting the respective values ,

[tex]\rm\implies cos45^\circ =\dfrac{1}{\sqrt2} [/tex]

For rationalizing the denominator , multiply numerator and denominator by 2 , we have,

[tex]\rm\implies cos45^\circ=\dfrac{1(\sqrt2)}{(\sqrt2)(\sqrt2)} [/tex]

Simplify ,

[tex]\rm\implies \boxed{\pink{\frak{ cos45^\circ=\dfrac{\sqrt2}{2} }}}[/tex]

Can somebody pls help me I appreciate it

Answers

y=3-2x

please mark brainliest and have a nice day!

Please Please Help Me​

Answers

Answer:

Step-by-step explanation:

(4^29)

(4^29) this is the awnser have a good day fellow person

Need help asap pls pls pls

Answers

Answer:

I would say the answer is A) y = x + 3

Step-by-step explanation:

Reason is, if you replace x with the different numbers listed under x and add 3 to them, they would equal the corresponding numbers listed under y.

For example:

x-value

(5) = (2) + 3

y-value

Hope this helps :)

A. Y=x+3 is the correct answer

2) translation: 2 units up
Q(-4,-2), R(-4,-2), s(0, -2), t(-3-5)

Answers

Answer:

Q'(-4,0), R'(-4,1), S'(0,0), T'(-3,-3)

Step-by-step explanation:

To solve this, what we need to do is find out what the translation is. So if we are translating those coordinates up two units, then that means we are basically adding two to the y value.

So that means that we will use the mapping (x,y)→(x,y+2)

Now we plug this in. We will start with Q:

Q(-4,-2)→Q'(-4,-2+2)→Q'(-4,0)

So when Q is translated two units up, we get Q'(-4,0).

Now we will do R:

R(-4,-1)→R'(-4,-1+2)→R'(-4,1)

So when R is translated two units up, we get R'(-4,1).

Now we will do S:

S(0,-2)→S'(0,-2+2)→S'(0,0)

So when S is translated two units up, we get S'(0,0).

Next we will do T:

T(-3,-5)→T'(-3,-5+2)→T'(-3,-3)

So when T is translated two units up, we get T'(-3,-3).

Answer:

Step-by-step explanation:

Hello  there !

    [tex]\boxed{\begin{array}{c|c} \boxed{\bf x} & \boxed{\bf y+2} \\ -4 & 0 \\-4&1\\0\!\!\!\!&0 \\ -3 &-3 \end {array }}[/tex]

if you sold 60 cups of lemonade , how many cups of orange drink did you sell

Answers

Answer: 0, I think, hope this helps

Step-by-step explanation:

Answer:

you sold 40 cups of orange drink.

Step-by-step explanation:

60*2=120 (the cups of lemonade, multiplied by the cost equals how much you earned from lemonade.)

240-120=120 (how much you earned total, minus 120, how much you earned from lemonade, equals the remainder, how much total you earned for the oragne drinks. )

120/3=40 (the amount you earned for the orange drinks, divided by three, how much you earned for each, which equals 40. and equation would be

240=2x+3y

240=2(60)+3y

240=120+3y

240-120=120-120+3y

120=3y

120/3=3y/3

40=y

Hope this helps!

SOMONE HELP ME I HAVE
TO DO THIS AFTER SCHOOL PLS ASAP!!!

Answers

Answer:

1 no

2 I don't know

3 no

4 yes

5 2.5 is the slope

6 -0.5

7 no slope

Step-by-step explanation:

1 no because the y overlaps

2 not sure

3 it over laps

4 it never overlaps

5 y=2.5x-3

6 y=-0.5x+1

7 no slope it's just x=-2

for the 5-7 you can type that into demos and get more info

y=mx+b

m is the slope and b is y intercept

When The sum of 1. 3240 and 1. 4872 is subtracted from 4. 0121 it will give you the difference of

A. 1. 2109
B. 2. 0905
C. 1. 2009
D. 2. 7009​

Answers

Answer:

C. 1.2009

Step-by-step explanation:

1.3240 + 1.4872 = 2.8112

4.0121 - 2.8112 = 1.2009 - C

y times 7 then add t expression

Answers

The expression is 7y + t

Answer:

7y + t

Step-by-step explanation:

Factorise; c cubed divided by c cubed?
HELP ASAP

Answers

Step-by-step explanation:

c³/c³ =1 .

hope this helps you.

Due to the accuracy of the tape measure Avani used, the amount of foam needed to cover the play area is
.

Answers

Answer:

The length of Due to the accuracy of the tape measure Avani used, the play area is 7.5 meters. The width of the play area is the amount of foam needed to cover the play area is 5.3 meters.

Step-by-step explanation:

Answer:

39.8

Step-by-step explanation:

edge 2022

At a pumpkin patch, if Armando guesses the weight of his pumpkin within 0.3 pounds, he gets to take the pumpkin home for free. If his pumpkin weighs 4.9 pounds, which two equations can be used to find the minimum and maximum weights he can guess in order to get his pumpkin for free

Answers

Answer:

4.6 ≤ w ≤ 52.

Step-by-step explanation:

Lowest value = 4.6 and highest = 5.2.

So weight w ≥ 4.6

and w ≤ 5.2.

Help me with this pls!!!

Answers

Weight in pounds is shown on the x-axis (bottom) of the graph, and the cost is shown on the y-axis (side) of the graph.

We can see that 2 pounds of pineapples is roughly worth $2.50.

To find the cost of 1 pound of pineapple, divide the cost by 2 and we will get $1.25.

Find the measures of the following angles

Answers

Answer:

HGD: 117

FDG: 180

Step-by-step explanation:

Answer:

<HDG = 117 degrees

<FDG = 63 degrees

Step-by-step explanation:

Its a straight line

These are supplementary angles

If its a striaght line its 180 degrees.

We already know theres a 63 degrees so we jsut gotta subtract

180-63=117

So 117 degrees for HDG

A sunflower is 15 inches tall and grows 2 inches a week. How many weeks will it take for the
Sunflower to be 23 inches tall?
Need help making an equation!!

Answers

Answer:

4 weeks

Step-by-step explanation:

15 + 2x = 23

2x = 8

x = 4

Please help me to solve this question. Thank you​

Answers

Answer:

cheating in exam mmmmmmmm

Which of the following intervals is equivalent to the statement -3 1. (-3,9]
2. [-3,9)
3. (-3,9)
4. [-3,9]

Answers

Answer: choice 3

Step-by-step explanation:

1. Anthony and his sister, Ciara, are saving their money to buy $240 MP3 players. They each plan to buy their own player.
Anthony starts off with $50 in his bank account and adds $20 each week. Ciara starts off with $10 in her bank account and
adds $30 each week. Complete each of the tables below based on the information given. The first table has been started for
you.
Anthony
Ciara
Week (x)
Process
Total dollars
(y)
Week (x)
Process
Total dollars
(y)
0
50 + 20.0
50
0
1
50 + 20 1
70
1
2
2
3
3
3
4
4
5
5
8
00
8
10
10

Answers

Answer:

See below.

Step-by-step explanation:

Anthony                                                              Ciara

Week (x)    Process     Total dollars    Week (x)    Process  Total dollars

                                             (y)                                                      (y)

0                50+20•0        50                     0            10+30•0          10

1                 50 + 20•1       70                      1             10+30•1           40

2                 50 + 20•2      90                    2             10+30•2          70

3                 50 + 20•3      110                    3             10+30•3        100

4                 50 + 20•4      130                   4             10+30•4        130

5                 50 + 20•5      150                   5             10+30•5        160  

8                 50 + 20•8      210                   8             10+30•8        250

10                50 + 20•10    250                 10            10+30•10        310

Please help me solve this problem

Answers

Answer:

30

Step-by-step explanation:

If you subtract 30 - 12 you would get 18 and multiply by -3 would get you -54

PLEASE HELP WILL MARK BRAINLIEST
What is -100 represented in exponents

Answers

Step-by-step explanation:

[tex] { - 100}^{1} [/tex]

2x+4 divided by 4 =8

Answers

Answer:

X = 14

Step-by-step explanation:

In pic

(Credits: Symbolab)

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

0.810x0.00084/0.000400x0.0270leave the answer in a standard form

Answers

Answer:

4.5927 x 10^-2 ?

Step-by-step explanation:

6. Write the following cubes in expanded form:

(iii) (3a + 4b)³

8. Evaluate the following cubes using suitable Identities:

(ii) (999)³

Answers

Answer:

Step-by-step explanation:

we can use this algebraic identity:

[tex](a+b)^{3} =a^{3} +b^{3} +3ab(a+b)[/tex]

So,[tex](3a+4b)^{3} =(3a)^{3} +(4b)^{3}+3(3a)(4b)(3a+4b)[/tex]

=[tex](3a+4b)^{3} =27a^{3} +64b^{3} +36ab(3a+4b)[/tex]

=[tex](3a+4b)^{3} =27a^{3} +64b^{3} +108a^{2} b+144ab^{2}[/tex]

[tex](999)^{3}[/tex]=[tex](1000-1)^{3}[/tex]

Now, we can use the following identity:

[tex](a-b)^{3} =a^{3} -b^{3} -3ab(a-b)[/tex]

=[tex](1000-1)^{3} =1000^{3} -1^{3} -3(1000)(1)(1000-1)\\[/tex]

[tex](1000-1)^{3} =1,000,000,000-1-2,997,000[/tex]

[tex](1000-1)^{3} =997,002,999[/tex]

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