Evaluate 3x^2+1 when x=-1

Answers

Answer 1

Answer:

10

Step-by-step explanation:

3(-1)=-3

-3^2=9

9+1=10


Related Questions

Find 1112+(−712). Write your answer as a fraction in simplest form.

Answers

Find 1112+(-712)=...

The original price of a t.v. was $500. Mrs. Nitz bought the t.v. on sale for $175. What a deal!!! Find the percent discount. BE CAREFUL...the t.v. was expensive but she got a big discount on it.

Answers

500 - 175 = 325
325/500 = 0.65 = 65%
the discount price was 65%

Marshall knows that he burns 235 calories by walking for 30 minutes. This week, Marshall walked for 360 minutes. How many calories did Marshall burn by walking this week?

Answers

Answer:

2820 calories

Step-by-step explanation:

Since 30 can fit into 360, you can divide it.

360/30=12

12 is what you will multiply to the number of calories in 30 minutes.

235*12=2820

Find the quotient of x4 + 2x + 4x - 10 divided by x + 2.
show your work

Answers

Step-by-step explanation:

Plz help me
Last year, 75 new houses were built in a neighborhood. So far this year, 5/8 of them have been sold. How many new houses have been sold this year? Write your answer in simplest form.

Answers

46 houses have been sold

To solve -3 = -19 + , what steps would you use? 19 5

Answers

Answer:

add divide

Step-by-step explanation:

Answer:

add divide

Step-by-step explanation:

Sabendo que as retas “a”, “b” e “c” são paralelas, calcule o valor de y
a)20 m
b)21 m
c)23m
d)24m

Answers

I think the answer it’s C :)

this is an isosceles triangle z=?

Answers

Answer:

Z = 75°

Step-by-step explanation:

Z is equal to 75°

hope that will help you

Z = 75 degrees as it is isosceles triangle

Simplify negative 6.5 times 2 times negative 5

Answers

Answer:

-65

Step-by-step explanation:

6.5*2*-5=-65

Answer:

65

Step-by-step explanation:

-6.5 x 2 x -5

-6.5 x 2

-13

-13 x -5

65

Find the error and explain what the correct step should be

Answers

Answer:

m = 12, the error was that the student did not divide both sides by -. so they got the incorrect answer

Step-by-step explanation:

okay, so you want to get m

because m is divided by 3, to counter it, you multiply both sides by three

-m/3 = -4

-m/3 times 3 =-4 times 3

because 1/3 times 3 =1, and -4 times 3 = -12, you get

-m = -12

then, divide both sides by - (because you want positive m)

and you get m = 12

the error was that the student did not divide by the negative, so in the end, their sign was wrong.

Six more than four times a number is equal to eight added to three times the same number. Find the number

Answers

6+4x=8+3x

-3x     -6

x=2

the number is 2

Can I get some help please?

Answers

Answer:

at least 28

Step-by-step explanation:

Answer:

The answer is C. at least 28

Step-by-step explanation:

Connor- 58 comic books

Drew-31 comic books

So, 58-31=27

if Drew add 27 comic books than it would be equal to Connor. So in order to have a larger collection than Connor he should at least add 28 comic books.

Hope it helps :)

A plane flew 720 miles in 6 hours. How many miles did the plane fly in 4 hours?

Answers

Answer:

[tex]\huge\boxed{\texttt{480 miles}}[/tex]

Step-by-step explanation:

We can create a ratio here to find the constant of proportionality and use that to find how many miles the plane flew in 4 hours.

We know the plane flew 720 miles in 6 hours. We can create a ratio, represented as a fraction, in the form  [tex]\frac{miles}{hours}[/tex] .

[tex]\frac{720}{6}[/tex]

We can now make another ratio where we use a variable for the miles flown in 4 hours.

[tex]\frac{x}{4}[/tex]

Since the ratios are equal, we can create an equation.

[tex]\frac{720}{6}=\frac{x}{4}[/tex]

To find the value of x, let's cross multiply.

[tex]720 \cdot 4 = 2880\\\\2880\div 6 = 480[/tex]

So the plane flew 480 miles in 4 hours.

Hope this helped!

Can someone help me answer this question ASAP!!!!

Answers

Answer:

noooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo u

Step-by-step explanation:

What is the equation to Pi in math?

Answers

By definition, pi is the ratio of the circumference of a circle to its diameter. In other words, pi equals the circumference divided by the diameter (π = c/d). Conversely, the circumference of a circle is equal to pi times the diameter (c = πd).

What is the prime factorization of 312
A.) 2 x 2 x 2 x 3 x 13
B.) 2 x 2 x 3 x 51
C.) 2 x 2 x 3 x 3 x 17
D.) 2 x 2 x 2 x 9 x 51

Answers

Answer:

A.) 2 x 2 x 2 x 3 x 13

Step-by-step explanation:

here is the factor tree for 312

Hope this helps! :)

What is a rational number and how do you know?

Answers

A rational number is a number that can be express as the ratio of two integers. A number that cannot be expressed that way is irrational.

PLEASE HELP!!

In isosceles triangle DAC, AD is congruent to AC. Kiran knows that the base angles of an isosceles triangle are congruent. What additional
information does Kiran need to know in order to show that AB is a perpendicular bisector of segment CD?

Answers

A perpendicular bisector is a line that crosses (bisects) another line segment at 90 degrees, dividing the line segment it crosses into two equal length lines

The additional information Kiran need to know to show that AB is a perpendicular bisector is the fourth option;

DB and BC are congruent

The reason for the above selection is as follows:

The information about the isosceles triangle DAC Kiran knows are;

Triangle DAC = An isosceles triangle

Segment AD is congruent to segment AC

Segment AB is a  is a line from the vertex point A to the side CD of triangle DAC

The required parameter:

The information Kiran has know so as to show that AB is a perpendicular bisector of CD

Method:

Determine an attribute present in triangle DAC with line AB drawn that is due to line AB being a perpendicular bisector

Solution:

For AB to be a perpendicular bisector, then DB and BC are congruent

Given that DB and BC are congruent, we get;

AB is congruent to AB by reflexive property

Therefore, given that AD is congruent to AC, we have;

Sides AD, AB, and DB in triangle ΔADB are congruent to the corresponding sides AC, BC, and AB in triangle ΔACB, which gives

ΔADB is congruent to ΔACB by Side-Side-Side, SSS, congruency rule

Therefore, ∠ABD ≅ ∠ABC, by Congruent Parts of Congruent Triangles are Congruent, CPCTC

∠ABD = ∠ABC by definition of congruency

∠ABD and ∠ABC are linear pair angles, therefore;

∠ABD + ∠ABC = 180°

∠ABD + ∠ABD = 2 × ∠ABD = 180° by substitution property

∠ABD = 180°/2 = 90°

∠ABD = 90° = ∠ABC, therefore, AB is perpendicular to CD and AB is a perpendicular bisector of CD

Therefore, the correct option Kiran need to know in order to show that AB is a perpendicular bisector of segment CD is the option; DB and BC are congruent

Learn more about perpendicular bisectors here:

https://brainly.com/question/15807158

Help please asap with this math

Answers

Answer:

30p + 5

You do destibutive property

(6p+1)(5)

6p * 5

1 * 5

=30p+5

ok so you first group them up and re write it
5 (6p+1)
then you multiply 5*6p which is 30 p
you mainly multiply and keep the variable(p)
then you multiply 5*1 which is 5
so the rewrites expression is 30p+5
hope that help good luck


Which of the following statements is true about
the values of the coordinate points in a figure when the figure is reflected over the y-axis?

Please help!!! The picture shows the selection of answers

Answers

Answer:

The y-axis stays the same

Step-by-step explanation:

:)

I know it’s late but is anybody here

Answers

Answer:

b is 0

Step-by-step explanation:

yes, i am here :)

Answer:

Equation: y = [tex]\frac{1}{2}x[/tex]

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

b = 0

Type of Slope = Positive linear slope

We are here for you m8.

Solve the formula for the variable w.



P = 2l + 2w


Answers:

A. w=p-1
B. w=p/2+1
C. w=p/2-1
D. w=p/2-1/2

Answers

Answer: w=p/2-1

Step-by-step explanation:

I just took the test

what are the common factors of 20 and 30
A. 1,2,5,10
B. 1,2,10
C. 1,10
D. 1,5,10

Answers

Answer:

D.

Step-by-step explanation:

Its D. Bruh

Which has a greater slope, a horizontal line or a vertical line?

Answers

Answer:

A horizontal line has slope zero since it does not rise vertically (i.e. y1 − y2 = 0), while a vertical line has undefined slope since it does not run horizontally (i.e. x1 − x2 = 0).

Answer:

A horizontal line has a greater slope than a vertical line

what is 0.000 0643 in standard form form ?


and what is 0.000 000 205 in standard form?


0.000 000 005 009

Answers

Answer:

See below

Step-by-step explanation:

[tex]0.000 0643 = 6.43 \cdot 10^{-5}[/tex]

[tex]0.000 000 205 = 2.05 \cdot 10^{-7}[/tex]

[tex]0.000 000 005 009 = 5.009 \cdot 10^{-9}[/tex]

State the domain of f•g. Then find f•g, including any additional restrictions necessary on the domain of the composition

Answers

Answer:

Answer is option A

Step-by-step explanation:

The required function [f o g(x)] is -7/√(x + 3).

The domain of the function  [f o g(x)] > - 3.

What is a function?

A function is  the relation between two sets. The first one is called domain and the second one is called range.

Given, f(x) = - 7/x

g(x) = √(x + 3)

Therefore, f o g(x)

= f[g(x)]

= f[√(x + 3)]

= -7/√(x + 3)

Now, the domain of f o g(x) > - 3.

Learn more about a function here: https://brainly.com/question/12396459

#SPJ3

Angela lives 0.6 mile from the park. It takes her hour to walk her dog to the park. How quickly are Angela and her dog walking in miles per hour?​

Answers

Answer:

0.6 miles an hour

Step-by-step explanation:

since it takes her 0.6 miles to walk an hour and an hour to walk 0.6 miles.

0.6 = 3/5

Answer: 0.1 miles per hour

Since an hour has 6 10-minute segments, divide by 6.

0.6 ÷ 6 = 0.1

Your answer should be 0.1 miles per hour.

So, Angela and her dog are walking at 0.1 miles per hour.

Hope this helps!

PlzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzILL GIVE BRAINLY FOR CORRECT ANWSER

Answers

Answer:

2,4,3,1

Step-by-step explanation:

Raj is deciding between two cell phone plans, A and B, which are both linear functions. The monthly charge for plan A according to the number of minutes used is shown in the table.

Monthly Charge for Plan A
Minutes used, x
Monthly charge ($), y
0
14.45
3
14.84
6
15.23
9
15.62
12
16.01

Plan B has the same monthly base charge as plan A, but it charges a different amount per minute used. If the total monthly charge for plan B is $22.10 when 45 minutes are used, what is the slope of the linear function that represents the cost of plan B?
0.13
0.17
0.39
0.45.

Answers

Answer:B is the correct answer (0.17)

Step-by-step explanation:

3(k - 5) + 9k 2-3 does anyone know how to solve this?

Answers

Answer:

=21k-18

Step-by-step explanation:

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