evaluate the expression for the given value of x

1. 2+x+(-7);x=8


2. x+7+(-7);x=4 ​

Answers

Answer 1

Answer:

1. 3               2. 4

Step-by-step explanation:

1. 2+8+(-7)

2+8-7

3

2. 4+7+(-7)

4+7-7

4

Answer 2

Answer:

x =-1

Step-by-step explanation:


Related Questions

If your roots are -3 and -1, your factors will be (x+3)(x+1), yes? But if your roots are positive, like 3 and 1, would it still be (x+3)(x+1), or would you then make it negative?

Answers

Determine the number of possible positive and negative real roots of the equation:

x - 4x + 5x² + 9x² + 2x 8

a 2 or 0 negative roots; 3 or 1 positive roots

b. 5, 3, or 1 negative roots;

4, 2 or 0 positive roots

c.

d.

2 or 1 neative roots; 3 or 2 positive roots

3 or 1 negative roots; 2 or 0 positive roots

Find the volume of the cylinder. Round your answer to the nearest tenth.
6 m

4 m
And I will report and get your account deleted if you answer with a link

Answers

Answer:

It should be 75.4

Step-by-step explanation:

The formula for a cylinders volume is V=[tex]\pi[/tex]r^2h

so plugging those in would be

V=[tex]\pi[/tex](2)^2(6)= 75.4

Hope this helps!

[tex]5^{-2}[/tex] × [tex]\sqrt[3]{8}[/tex]

Give your answer in decimal

Answers

Answer:

0.08

Step-by-step explanation:

∛8 = 2 as 2*2*2 = 8

[tex]5^{-2}[/tex] = [tex]\frac{1}{5^{2} }[/tex] = [tex]\frac{1}{25}[/tex]

[tex]\frac{1}{25}[/tex] * 2 = [tex]\frac{2}{25}[/tex] = 0.08

factor completely x^2+6x-27?

Answers

Answer:

(x+9)(x-3)

Step-by-step explanation:

Find the number that multiplies to make -27 and adds to make 6. In this case it is 9 and -3. Use these numbers to factorise.

Answer:

(x-3) (+9)

Step-by-step explanation:

To know what numbers to use, factor out the constant (-27).

You would get the numbers : 1,3,9,27.

Then figure out which numbers would make the 6x true. In this case, we would need the 3 and 9. They also need to add up to 6x, so the 3 needs to be negative.

-3 & 9

Then form the factors:

(x-3) (x+9)

--------------------------

You can also check this to make sure.

Have a nice day!

Help me pleaseeeeeeee

Answers

Answer:

10

Step-by-step explanation:

Could someone check this answer for me?

Answers

Yes it is correct!
STEP BY STEP:

Answer:

Yes you are correct! :)

Se ha construido un cuadrado sobre cada lado del triángulo rectángulo, Pitágoras dice que el cuadrado de área 25 cm2, es igual a sumar las áreas de los otros dos cuadrados, es decir, 16 cm2 y 9 cm2. Escribir la expresión algebraica que mejor represente la relación entre las áreas en la figura.

Answers

Answer:

Tenemos la siguiente expresión algebraica:

[tex]c^{2} = a^{2}+b^{2}[/tex] (1)

Donde:

[tex]c[/tex] - Hipotenusa, en centímetros.

[tex]a, b[/tex] - Catetos, en centímetros.

Step-by-step explanation:

Este ejercicio ofrece un recurso mnemotécnico para la comprensión y aplicación del Teorema de Pitágoras, el cual establece que el cuadrado de la hipotenusa es igual a la suma de los catetos elevados al cuadrado, siendo cada componente equivalente al área de un cuadrado hipotético, entonces, la expresión algebraica que representa esa relación entre las áreas es:

[tex]25\,cm^{2} = 16\,cm^{2} + 9\,cm^{2}[/tex]

[tex](5\,cm)^{2} = (4\,cm)^{2}+(3\,cm)^{2}[/tex]

Por analogía, tenemos la siguiente expresión algebraica:

[tex]c^{2} = a^{2}+b^{2}[/tex] (1)

Donde:

[tex]c[/tex] - Hipotenusa, en centímetros.

[tex]a, b[/tex] - Catetos, en centímetros.

Find the area of the shape. 2

Answers

Answer:

4

Step-by-step explanation:

HELP DUE IN 10 MINS!

x=??

Answers

Answer:

x = 3°

Step-by-step explanation:

S and T are supplementary angles

m∠S + m∠T = 180°105° + 24x + 3° = 180°24x = 180° - 108°24x = 72°x = 72°/24x = 3°

THIS IS VERY IMPORTANT I WILL GIVE BRAINLIEST TO THE PERSON WHO DOES ALL 5 QUESTIONS FOR ME.

Answers

Answer:

Step-by-step explanation:

406525%

Answer:

Q1; 40

Q2; 65

Q3; B (25)

Q4; A (?)

Q5;  63

Step-by-step explanation:

I believe

Dog food bad contains 18 cups to fill it up his friend dog eats 1 1/2 each day he says he'll be able to feed his dog for 27 days that true?

Answers

Answer:

It's not true because 18 cups will only last 12 days, not 27 days.

Step-by-step explanation:

1 1/2 = 3/2

3/2(27) = 40.5 cups

18 = 3/2c

c = 12

how do you translate a figure in a coordinate plane?

Answers

Answer:

Answer down below

Step-by-step explanation:

When you perform translations, you slide a figure left or right, up or down. This means that on the coordinate plane, the coordinates for the vertices of the figure will change. To graph a translation, perform the same change for each point. You can identify a reflection by the changes in its coordinates.

A. Zara is learning about surface area and volume in math class. She begins to notice that she can apply this geometry in everyday life. When her
mom makes a jelly sandwich for her lunch, Zara notices it is similar to a rectangular prism and decides to measure its dimensions. She measures
the length as 13 cm, the width as 10.8 cm, and the height as 3 cm, as shown below.

Answers

Answer:

Volume fomlua is LxWxH, just multiply the numbers with a calculator:)

ASAP someone please simplify these two exponents

Answers

Answer:

3) [tex]qm^{-17}[/tex]

4) [tex]np^{-3}[/tex]

These should be your answer! Make sure to double check!

Step-by-step explanation:

Just simplify.

Help me with this problem please

Answers

Answer:

I'm not 100% sure, but I think the answer is 10 units squared.

Step-by-step explanation:

Find the area of each triangle, by multiplying each side, and dividing the answer in half. Add both of the triangles together, ending up as 6. Now we just find the area of the square. 2x2=4, add that to both of the triangles, and we're done. (2x2) ÷ 2 = 2 | (2x4) ÷ 2 = 4 | 2x2 = 4 | 4+4+2=10

Answer:

area=10 units^2

Step-by-step explanation:

[tex]a=\frac{(2+2+4)+(2)}{2} *2\\ =\frac{8+2}{2} *2\\ =\frac{10}{2} *2\\ =5*2\\ =10[/tex]

a=10 units^2

Marissa had a $25 gift card for Roosters on Oxford. Each morning she purchases her $3 vanilla latte. Write an equation in slope- intercept form where y represents the amount of money on the card, after x visits.

Answers

Answer:

Y=3/1x+25

Step-by-step explanation: I believe this is correct. I was doing this a while ago so I might have it wrong. Y Is the money on the card, m, or 3/1 is the slope. B is the Y-intercept, which is 25.

Josh's soccer team had a competition to see which player should be the goalie. Each player tried to block 15 kicks from entering the goal, and the coach recorded the number of successfully blocked kicks. Josh made a dot plot to display the information. What is the interquartile range for the data?​

Answers

Answer:







Explanation








I am having problems sorry if you can’t see it let me know if you can’t see it

Answer:

sup

Step-by-step explanation:

hey

It costs $520 to plant 4 acres of corn. How much would it cost to plant \large \frac{3}{5} acre of corn?

Answers

Answer:

$78 to plant 3/5 an acre of corn

Step-by-step explanation:

you can set up a fraction. 

520/4 = x/6

Cross multiply

312 = 4x

Divide both sides by 4 equal to

x=78

$78 to plant 3/5 an acre of corn

commen denominaor for 1/4 2/3

Answers

Answer:

The least common denominator is 12.

Step-by-step explanation:

Here's how I got my answer.

First, I listed out the multiples of 4, which is the denominator of 1/4.

4: 4, 8, 12, 16

Next, I listed out the multiples of 3, which is the denominator of 2/3.

3: 3, 6, 9, 12

The smallest number they have in common is 12.

Therefore, the least common demoninator (LCM) is 12.

What is the solution to
this system of linear
equations?

Answers

I think it’s (3,1) I’m not sure it’s right I’m just guessing :)

2.5:3.5 simplified ratio

Answers

Answer:

5:7

Step-by-step explanation:

Find the area I will mark the BRAINIEST

Answers

Answer:

Step-by-step explanation:

please help me with this question thank you

Answers

Answer:

Shindeu NANI?!?

Step-by-step explanation:

Answer: X=0

Step-by-step explanation:

help me please.. im doing 8th grade math with pythagorean theorem i really need help please 10 points!!

Answers

Answer:78.1 is the answer and B or D will be your answer hope this helped

Step-by-step explanation:

Find the value or X. Round your answer to the nearest tenth.

Answers

Answer:

x = 9.3

Step-by-step explanation:

tan 25° = x/20

0.4663 = x/20

x = 9.3

A pyramid at a museum has a height of 21 meters and a square base with side lengths of 30 meters. 21 m 30 m What is the approximate volume of the pyramid?​

Answers

Answer: 6,300 m^3

Step-by-step explanation:

Put numbers into calculator

Write two equivalent area to represent the perimeter of this rectangle. 5 X-2​

Answers

Answer:

area = x-2 * 5

perimeter = 2(x-2) + 10

Is my work correct here I'm supposed to find the first four terms using the recursion formula?

Answers

Answer:

yes your formula is correct

Step-by-step explanation:

Part I
compare the difference of the means of the two data sets found in part H as multiple m of their variability ​

Answers

Answer:

Step-by-step explanation:

I know that the two means are are 11.28 and 12.

I could be wrong but I did the math 5 times.

Answer:

the other guy is correct

Step-by-step explanation:

You move up 4 units and down 7 units. You end at (-5, -4). Where did you start?


Please Help Me!!!


I'm CONFUSED!!


Even my math teacher doesn't understand!!

Answers

Answer:

-5, -1 is the start

Step-by-step explanation:

Answer:

(-5,-7)

Step-by-step explanation:

moving up 4 units would leave you at (-5,0) then, after moving back down 7, you would get (-5,-7)

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