Evaluate -5x+8 when x=3 The value of the expression is

Answers

Answer 1

Answer:

-7

Step-by-step explanation:

replace x by 3

-5^3+8

-15+8

=-7

Answer 2
the answer is -7
-5x+8
-5(3)+8
-15+8
-17

Related Questions

First one will be marked brainest GOOD LUCK!!!

Answers

Answer:

The 3rd one

Step-by-step explanation:

Answer:

the third option

Step by step explanation

which expression uses the distributive property to represent the sum of 28+42

Answers

Answer:

(2 x 14) + (3 x 14) = 5 x 14 = 70

Answer:

14(2 + 3)

Step-by-step explanation:

28 = 2 x 2 x 7

42 = 2 x 3 x 7

The HCF of 28 and 42 is given by 2 x 7 = 14

- + =6
- +
+ - =14
+ - +
- + =5
= = =
9 10 4

Answers

Step-by-step explanation:

20-17+3=6

18+1-5=14

7-8+6=5

20-18+7=9

17+1-8=10

3-5+6=4

please help I dont understand ​

Answers

Answer:

Step-by-step explanation:

Find the slope between (9 , 75) and (13 , 95)

Kelly runs a distance of 100 metres in a time of 10.52 seconds.
The distance of 100 metres was measured to the nearest metre.

The time of 10.52 seconds was measured to the nearest hundredth of a second.

(a) Write down the upper bound for the distance of 100 metres.

Answers

The upper bound means the highest number that you can round up to the nearest unit, in this case meters. So the upper bound for the distance of 100 meters is 100.4 meters.

Answer:

bye

Step-by-step explanation:

Hi pls help me ILL GIVE BRAINLIEST TO WHO ANSWERS CORRECTLY

Answers

Answer:

Linear pair

Step-by-step explanation:

∠6 and ∠7 are linear pair angles.

Solve this equation: -7.2 + 12 - 2.c
23 + 13x
Step 3: Isolate the variable term on one side of the equation by both sides of the equation

Answers

Answer:

4.8-46c+13x

Step-by-step explanation:

What is the geometric mean between 4 and 25. Write the answer in simplified radical form

Plzzz help me asap

Answers

Answer:

The geometric mean is the square root of 4*25

=10

Step-by-step explanation:

A _____________ _________________ is used to smother small fries on/in objects or on a person.
PLS HELP ME!!!!

Answers

Answer:

Ketchup, bottle

Step-by-step explanation:

I am confused on this but hope it help you.

Have a great day!

if 2 + 2^2 + 2^3 +...+ 2^n = 510 then n = ?

Answers

Answer:

N= 8

Step-by-step explanation:

Answer:

n = 8

Step-by-step explanation:

This Geometric series. r = 2 and a = 2

[tex]S_{n}= \dfrac{a(r^{n}-1)}{r-1}\\\\\\\dfrac{2(2^{n}-1)}{2-1}=510\\\\\dfrac{2*(2^{n}-1)}{1}=510\\\\2*(2^{n}-1) = 510\\\\2^{n-1}=\dfrac{510}{2}\\\\2^{n} - 1 = 255\\\\2^{n}=255+1\\\\2^{n} = 256\\\\2^{n} =2^{8}[/tex]

n = 8

A vehicle has a speed with the formula v=(90+20t)m/min. The distance covered every minute is s=1/2vt km. If this vehicle has been moving for 1/2 hours, then the distance that has been traveled is .... km

Answers

Answer:

around 7

Step-by-step explanation:

7 is my lucky number

If 40 meters of a cloth costs Rs 1940 how many meters can be bought for Rs 727.5




Plz explain

Answers

Answer:

15

Step-by-step explanation:

suppose x is the no. of cloth that can be bought in rs 727.5

then cost of 1meter cloth is rs 727.5×.....(i)

and cost of 40mtr cloth is rs 1940

then 1mtr cloth is 1940/40....(ii)

so from i and ii

we get

727.5/x = 1940/40

Will mark brainliest for correct answer !!! <3
(Which answer choice shows that the commutative property does not hold for
matrix multiplication?)

Answers

Answer:

C

Step-by-step explanation:

look at A and B it is false

Compound Interest: Suppose you deposit $250 in a new savings account paying an annual yield of 3% interest. If the account
is left alone, how much money will be in the account at the end of 5 years?
$289.82

Answers

Answer:25,347

Step-by-step explanation:

Please answer this question

Answers

Answer:

Median : 11.5, or 12 if you round it up.

Mean : 10.9 rounded up 10.875 not rounded.

Hope this help's, enjoy!

round off 4.675 to the nearest tenth​

Answers

round off 4.675 to the nearest tenth

4.7

hope it helps

Solve y for 4(3y - 1) - 5y - 6 = 18

Answers

Answer:

y=4

Step-by-step explanation:

What is the answer to this question?
I am confused.

Answers

Answer:

y=88 x=42

Step-by-step explanation:

Since the total measurments of one triangle have to equal 180 and one angle is already 50, and the angle on the oppisite side of the y angle is 90 the only logical number for y would be 88. Hope this helped :)

helppppppppppppppppppppppppppppppppppppppppppppppppppppppppppp

Answers

Answer:

I'm guessing 60km.

Step-by-step explanation:

So per hour,

45km÷3=15km/h

Thereof,

In 4 hours,

15×4=60km.

He will bike 60 km bc in 3 hours was 45 45/3 is 15 so add 15 each hour

please help me!!!!! ​

Answers

Answer:

The equation is 39=3r-6

Step-by-step explanation:

Let x = # of years from the start of the Great Depression to the first Presidential election of Nixon

Let r = Raul's age

The question gives us what x equals so...

x=39

Now we just turn the sentence into an equation.

"The number of years from the start of the Great Depression to the first Presidential election of Nixon [(x)] is six years less than three times Raul's age [(3r-6)]"

Remove the icky words...

x=3r-6

replace x with what it equals (39)

39=3r-6

Now you can go on to olve it

Overal Raul is only 15 :)


SOMEONE PLEASE HELP ME i really need this one

Answers

Answer:

Wait are u trying to find the area of a shape???

Step-by-step explanation:

Please help me this question…

Answers

the area of the rectangle is 0.1 square meter

Area of rectangle is Length * width

Let's solve the equations
It's clear from the rectangle that the widths are equal.
So 2x-1=x+2
2x-x=2+1
X=3 cm

Let's find y from the heights
2y=3y-1
3y-2y=1
y=1cm

Let's apply the area formula
A= L*W
3*1
= 3 cm ^2

We know 1 meter =100 cm

So 3cm * 1m^2/(100cm )^2
Area in meter = 0.0003 meter^2


mutltply 2/3 by 42 and then mutltply that product by 10

Answers

Answer:

280

Step-by-step explanation:

2/3 * 42 = 28

28 * 10 = 280

Answer:    140 is the answer

Step-by-step explanation:

Find the value of x so that | || m. State the converse used

Answers

X = 12 because 14x - 23 = 9x + 60 then you just solve for x

p is a degree 3 polynomial with p ( 0 ) = 22.08 and zeros 2 and 4 i . Find an equation for p with only real coefficients (i.e. no i in your equation).
Use x as your input, and round all answers to 2 decimal places as needed.

Answers

Answer:

P(x) =  -0.69x³ + 2.76x² - 11.04x + 44.16

Step-by-step explanation:

Let P(x) is the function with zero's 2 and 4i.

It has to have one more zero since it is of degree 3. This is a conjugate of 4i and is -4i.

The function has the shape of:

P(x) = a(x - 2)(x - 4i)(x + 4i)

And we have P(0) = 22.08

Let's substitute and find the value of a:

22.08 = a(0 - 2)(0 - 4i)(0 + 4i)22.08 = a(-2)(-4i)(4i)22.08 = a(-2)(-16i²)22.08 = a(-32)a = - 22.08/32a = - 0.69

The function is now:

P(x) = -0.69(x - 2)(x - 4i)(x + 4i)

      = -0.69(x - 4)(x² + 16)

      = -0.69(x³ - 4x² + 16x - 64)

      = -0.69x³ + 2.76x² - 11.04x + 44.16

What is the slope of the line that passes through the points (-10, 9)(−10,9) and (-12, 7) ?(−12,7)? Write your answer in simplest form

Answers

Answer:

I Had A Problem In This Too Lol Here Was Correct For Me

Step-by-step explanation:

Identify the coordinates (x₁,y₁)and(x₂,y₂). We will use the formula to calculate the slope of the line passing through the points (3,8) and (-2, 10).

Input the values into the formula. This gives us (10 - 8)/(-2 - 3).

Subtract the values in parentheses to get 2/(-5).

Simplify the fraction to get the slope of -2/5.

Answer:

slope = 1

Step-by-step explanation:

Calculate the slope m using the slope formula

m = [tex]\frac{y_{2}-y_{1} }{x_{2}x_{1} }[/tex]

with (x₁, y₁ ) = (- 10, 9 ) and (x₂, y₂ ) = (-12, 7 )

m = [tex]\frac{7-9}{-12-(-10)}[/tex] = [tex]\frac{-2}{-12+10}[/tex] = [tex]\frac{-2}{-2}[/tex] = 1

Genie is making cookies and brownies. Each cookie uses 8 grams of flour and each brownie uses 12 grams of flour. She wants to make more than 125 cookies and brownies altogether. If Genie has a total of 2,000 grams of flour, which system of inequalities models correctly the number of cookies, c, and brownies, b, she can make? ) C+b> 125 A) 8c + 12b s 2000 c+b2 125 8c + 12b s 2000 B) c+b< 125 C) 8c + 12b s 2000 c+bs 125 D) 8c + 12b s 2000

Answers

The system of inequalities models correctly the number of cookies is c + b ≥ 125 and 8c + 12b ≤ 2000

Let c represent the number of cookies and let b represent the number of brownies.

Since Genie want to make more than 125 cookies and brownies altogether, hence this is given by:

c + b ≥ 125   (1)

Also, Genie has a total of 2,000 grams of flour, hence:

8c + 12b ≤ 2000  (2)

Therefore the system of inequalities models correctly the number of cookies is c + b ≥ 125 and 8c + 12b ≤ 2000

Find out more at: https://brainly.com/question/15137133?referrer=searchResults

The dimension of a mural pointed on the wall of a school is 10 ft by 22 ft. the art club wants to paint a new mural that is x feet longer and x feet wider. Find the new dimensions of the new mural with an area of 540 square feet

Answers

Answer:

18 ft and 30 ft

Step-by-step explanation:

The new dimensions will be:

10 + x and 22 + x

The area is 540

Using area equation we get:

(10 + x)(22 + x) = 540x² + 32x + 220 = 540x² + 32x = 320x² + 2x*16 + 256 = 320 + 256(x + 16)² = 576x + 16 = √576  (Ignoring the negative root as the length is never negative)x + 16 = 24x = 8

The new dimensions are:

10 + 8 = 18 ft and 22 + 8 = 30 ft

A concert venue can hold up to 2,400 people. 50 tickets are automatically reserved for radio stations to give out. When tickets go on sale for a Coldplay concert, 30 tickets are sold every minute. Which inequality below represents times in minutes , m, before the concert is sold out?

Answers

The tickets will be sold out in 78.333 minutes

can somebody help me with number 26 please? Giving brainliest!!

Answers

Answer:

Ans 26

Step-by-step explanation:

F(x) = x/2

proof:

at x=0, f(x)=0

at x= -2 , f(x) = -1

and x = -4 , f(x) = -2

that's it.

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