7. Evaluate the following expression for n = 4.
2n? - 8

Answers

Answer 1
0
The reason is 2 times 4 equals 8 and 8-8 is 0
Answer 2

Simply replace n with 4 and do the math.

2n - 8

Let n = 4

2(4) - 8

8 - 8 = 0

Answer: 0


Related Questions

6(x-2=4(x+3) what does x equal

Answers

Hey mate here is your answer.

6(x-2) = 4(x+3)

6x-12 = 4x + 12

6x - 4x = 12 + 12

2x = 24

x = [tex] \frac{24}{2} [/tex]

x = 12

Which of the equations is graphed below?

A.) Y=X
B.) Y=2X
C.) Y=-2X
D.) Y=-X​

Answers

Answer:

y = -x

Step-by-step explanation:

it is negative slope so -x

Simplify the expression:
(1 + 5h)(4)

Answers

Answer:

20h + 4

Step-by-step explanation:

It's easy. Just disperse the multiplying by 4 to the others in the first group.

Multiply 1 by 4, and you get 4.

Multiply 5h by 4, and you get 20h.

The answer is 20h + 4.

If this question helped you, please rate and click THANKS!

what type of triangle is ️abc as defined by its sides and angles


a. acute scalene
b. obtuse isosceles
c. right scalene
d. acute isosceles

Answers

Answer: d) acute isoceles

Step-by-step explanation:

it has 2 acute angles and it's isoceles because it has 2 sides of equal length

Answer:

d. acute isosceles

Step-by-step explanation:

ABC had two sides that are equal so it is an isosceles triangle

<B = 90-44 = 46

A and C must be equal

A + B + C = 180

A + 46 + B = 180

2A = 180- 46

2A = 134

A = 67  so C = 67

All angles are acute

HELP!!!
This is a geometry question!
Please give reasoning with your answer!
I can and will mark a "real" answer brainliest!

Answers

Answer:

∠ Q = 75°

Step-by-step explanation:

Since PR and PQ are equal then the triangle is isosceles, thus

the base angles R andQ are congruent

The sum of the 3 angles in a triangle = 180°

Sum the 3 angles and equate to 180

x + 2x + 15 + 2x + 15 = 180, that is

5x + 30 = 180 ( subtract 30 from both sides )

5x = 150 ( divide both sides by 5 )

x = 30

Thus

∠ Q = 2x + 15 = 2(30) + 15 = 60 + 15 = 75°

What is the solution to the inequality 5.25 – b ≥ 6.5? A number line going from negative 5 to positive 5. A solid circle appears between negative 1 and negative 2. The number line is shaded from the circle to negative 5. A number line going from negative 5 to positive 5. An open circle appears between negative 1 and negative 2. The number line is shaded from the circle to negative 5. A number line going from negative 5 to positive 5. A solid circle appears between negative 1 and negative 2. The number line is shaded from the circle to positive 5. A number line going from negative 5 to positive 5. An open circle appears between negative 1 and negative 2. The number line is shaded from the circle to positive 5.

Answers

Given:

The inequality is

[tex]5.25-b\geq 6.5[/tex]

To find:

The solution of the given inequality on the number line.

Solution:

We have,

[tex]5.25-b\geq 6.5[/tex]

Subtract 5.25 from both sides.

[tex]5.25-b-5.25\geq 6.5-5.25[/tex]

[tex]-b\geq 1.25[/tex]

Multiply both sides by -1 and change the sign of inequality.

[tex]b\leq -1.25[/tex]

The value of b always less than or equal to -1.25. Since -1.25 included in the solution set, therefore there is a solid circle on -1.25.

-1.25 lies between -2 and -1. It means the solid circle lies between -1 and -2.

[tex]b\leq -1.25[/tex], so the number line is shaded from the circle to negative 5.

A number line going from negative 5 to positive 5 is the required solution if a solid circle appears between negative 1 and negative 2. The number line is shaded from the circle to negative 5.

Therefore, the correct option is A.

Answer:

the correct answer is option C

Step-by-step explanation:

I fixed my mistake from choosing option A

What is the slope of the line???
PLEASE HELP!?

Answers

The slope of the line is 3

Solve absolute value of x-2=4

Answers

Answer:

6

Step-by-step explanation:

2+4=6

you need to do the oppsite opporation and that the answer for example x-2=4 just add 2 and 4 and thats the answer that is aslo the same rule as divsion and multiplecation sorry for spelleng mistakes hope this helps!!!!!!

The absolute value Is 6


Convert to Standard Form
13-6x-y=0

Answers

I believe this is the answer 6x+y=13

Write an expression for the operation described below.
subtract 6 from s

Answers

I think the expression would be 6-s.

Describe or show how to find the following product using both an algorithm and a diagram:

1 1/3 x 2

Answers

Answer:

Step-by-step explanation:

espera y termino y te ayudo vale que me falta poco vale

Dave bowled a 120his first game. In his second game, he bowled 150. Find the percent of change to the nearest tenth. State whether the change is an increase or decrease

Answers

Answer:

The percentage was 25% which was an increase.

Step-by-step explanation:

150 - 120    x 100% = 25%

  120  

150 - 120 = 25% (30)

Answer:

The percentage was 25% which was an increase.

Step-by-step explanation:

Which demonstrates the distributive property? *
a + b = b + a
O (a + b) + c = a + (b + c)
a(b + c) = ab + ac
a + 0 = a

Answers

Answer:

a(b + c) = ab + ac demonstrates the distributive property ⇒ C

Step-by-step explanation:

The distributive property is the product of a number by the sum of the other two numbers equal to the sum of the product of the number with each of the other two numbers.

Example: x(y + z) = xy + xz

Let us check the choices to find which of them demonstrates the distributive property

∵ a + b = b + a

→ Adding a and b equals to adding b and a,

∴ It demonstrates the commutative property

∵ (a + b) + c = a + (b + c)

→ Adding the sum of a and b to c equals to adding c to the sum of a and b

∴ It demonstrates the associative property

a(b + c) = ab + ac

→ Multiplying a by the sum of b and c equals the sum of the products

  of a, b and a, c

It demonstrates the distributive property

∵ a + 0 = a

→ The additive identity is zero

∴ It demonstrates the additive identity property

a(b + c) = ab + ac demonstrates the distributive property

if you know RS=St and

Answers

Answer: The side angle side postulate

Step-by-step explanation:

please help me, i don't understand this at all :(

Answers

i don’t know how much this will help as i don’t know the specific methods used in your lesson, but what i personally do is break down the number as much as i can.

32 can be simplified to 2^5. this is the fourth root, so you take out four of the 2’s to the outside by the 6. therefore it becomes 6(2) which = 12 along with the other 2 and an x left inside the fourth root “house”. btw i would write it out but brainly doesn’t let me attach pictures for some reason, and i don’t have the symbols on my keyboard. ):

we now simplify 512 in the second term. 512 is the same thing as 32 times 16, which is 2^9. we take out four of the 2’s, leaving us with 2^5. we can take four more 2’s out, leaving us with a 2 and an x in the inside of the fourth root “house”. on the outside we have 2 2’s, leaving us with a product of 4.

third term. 16 can be simplified to 4^2, or 2^4. we can take all four of them out since it’s the fourth root. there are also four x’s, so we take them out, leaving us with 2x. there isn’t anything left in the “house”.

now, we go from left to right. to better illustrate it, i will use “{ }” as the fourth root.

12 {2x} - 4 {2x} + 2x

8 {2x} + 2x . that’s as simplified as it can get. hopefully this helps! ):

In the United States, 15,000,000 households use private wells for their water supply. Write this number in scientific notation.
need answer fast

Answers

Answer:

1.5*10^7

Step-by-step explanation:

That's same as saying standard form

Answer:

1.5 x 10 to the 7th power

Step-by-step explanation:

There are 7 digits between the decimal point in 15,000,000.0 and the first digit. So it can then be rewritten as 1.5 x 10 to the 7th power

Which statement is best represented by the inequality d greater-than 11?
Mo worked more than 11 hours this week.
Mo worked 11 more hours than Quinn worked this week.
Mo worked less than 11 hours this week.
Mo worked 11 less hours than Quinn worked this week.

Answers

answer:

mo worked more than 11 hours this week.

Answer:

A

Step-by-step explanation:

what is the value of x in the equation 3(x-2)+4x=10(x+1)​

Answers

Answer:

-16/3 =x

Step-by-step explanation:

3(x-2)+4x=10(x+1)​

Distribute

3x -6  +4x = 10x +10

Combine like terms

7x -6 = 10x+10

Subtract 7x from each side

7x-6-7x = 10x-7x +10

-6 = 3x+10

Subtract 10 from each side

-6-10 = 3x+10-10

-16 = 3x

Divide by 3

-16/3 = 3x/3

-16/3 =x

stion 2
What is the value for y in the following expression
when x = 20
y= -2x + 8

Answers

See attachment for math work and answer.

The value of y= -32 when x= 20

ben payed $900 for a sofa. The price of the sofa Juana was 2/3 the price ben payed. How much did Juana pay for her sofa?

Answers

Answer: $600

Step-by-step explanation:

Find 2/3 of $900.

To do this, we have to get 9 and divide by 3.

9 ÷ 3 = 3

Multiply 3 by 2. You get 6.

Add two zeros.

You will get $600.

3(q − 16) + –8 = –14

Answers

Answer:

q = 14

Step-by-step explanation:

3 (q - 16) + -8 = -14

3q - 48 + -8 = -14

3q - 56 = -14

    +56     +56

3q = 42

/3.      /3

q = 14

hope this helps :)

Claire and Richard are both artists. Claire uses the polynomial 50x^2+250 to decide how much to charge.Richard uses the polynomial 49x^2+350 to charge how much to charge for his painting.In each polynomial x is the height of the paintings feet. To the nearest tenth what height will both Claire and Richard charge for the same amount for a painting?

Answers

Answer:

The height of the painting has to be 10 feet for both Claire and Richard to charge the same amount.

Step-by-step explanation:

The polynomial expression representing the charge for Claire's paintings is:

C = 50x² + 250

The polynomial expression representing the charge for Richard's paintings is:

R = 49x² + 350

Here x represents the height of the paintings feet.

Now compute the value of x such that both Claire and Richard charge the same amount as follows:

C = R

50x² + 250 = 49x² + 350

50x² - 49x² = 350 - 250

x² = 100

x = 100

Thus, the height of the painting has to be 10 feet for both Claire and Richard to charge the same amount.

There are 420 grams of sodium in 3 cans of soup. Which equation finds the number of grams of sodium, s, in 1 can of soup? A 1s=34201 over s is equal to 3 over 420 B 3s=14203 over s is equal to 1 over 420 C s420=31s over 420 is equal to 3 over 1 D s1=3420s over 1 is equal to 3 over 420

Answers

Answer:

[tex]1\ can = 140g[/tex]

Step-by-step explanation:

Given

[tex]420 g = 3\ cans[/tex]

Required

Determine the number of grams in 1 can

[tex]420 g = 3\ cans[/tex]

Reorder

[tex]3\ cans = 420 g[/tex]

Divide both sides by 3

[tex]\frac{3\ cans}{3} = \frac{420 g}{3}[/tex]

[tex]1\ can = 140g[/tex]

Hence;

There are 140 grams in 1 can

Solve for y -x - 2y=8

Answers

Answer:y=4

Step-by-step explanation:

Substitute y=0
0-x-2 x 0= 8
-x-0=8
-x=8
Change the signs on both sides
X=-8

sum please help me ASAP on both of themmm

Answers

Answer:

7.d

8.c

Step-by-step explanation:

I looked it up to make sure! Hope this helped!

?×3/4=-6
what does ? equal
please answer asap

Answers

Answer:

-8

Step-by-step explanation:

Evaluate 6x – y if x = 5 and y = 8.
3
22
43
57

Answers

Answer:

the answer is 22

Step-by-step explanation:

you just need to plug in the values of x and y so...

6(5)-8

30-8

=22

* + 86
* + 106
Can you please help

Answers

Answer:x=20

Step-by-step explanation:

Answer:

I think is x=-20

I might have calculated wrong

Create three different expressions that are each equal to 20. Each expression should include only these three numbers: 4, -2, and 10.

Answers

5*4=20 / 10*2=20/ 22+-2=20

How many 1/3 inch pieces can be cut from 7/15 of an inch long

Answers

Answer:

1.4

Step-by-step explanation:

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