Solve the inequality -4(x + 4) > x + 7. Give your answer as an interval.

Step-by-step explanation:

4x + 8y = 40

4x + (8×0.8) = 40

4x + 6.4 = 40

4x = 33.6

4x÷4 = 33.6 ÷ 4

x = 8.4

Answer:

8.4

Step-by-step explanation:

:D

Answer:

see I need help for chemistry pls anyone here helps me I must submit before 10:30

Answer:

I'm pretty sure it's 413

Step-by-step explanation:

so I divided 177 by 3 to get 59

then multiplyed 59 by 7 to get 413

Answer:

Opinion B

Step-by-step explanation:

hope that will help you

Answer:

x=6, y = -9

Step-by-step explanation:

6x + 2y = 18

-4x - 2y = -6

Add the two equations together to eliminate y

6x + 2y = 18

-4x - 2y = -6

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

2x +0y = 12

Divide by 2

2x/2 = 12/2

x = 6

Then find y

6x+2y = 18

6*6 +2y = 18

36+2y = 18

Subtract  36 from each side

36+2y-36 = 18-6

2y = -18

Divide by 2

2y/2 = -18/2

y = -9

Answer:

B

Step-by-step explanation:

Answer:

$107.10

Step-by-step explanation:

The original price of the CD player is $120 and we need to take 15% off.

We can find how much we need to subtract by multiplying 120 by .15, which equals 18. Then we can subtract that from 120, to get a sales price of $102.

A shortcut is subtracting 15 from 100 to get 85, and then doing 120*.85 = 102.

From the sales price of 102, there's a 5% tax to add on. 102 * .05 = 5.1

102+5.1 = 107.1

Answer:

$107.10

Step-by-step explanation:

First, find the discount.

Multiply the discount rate, 15% by the price of the CD player, $120

discount rate * price

15% * $120

Convert 15% to a decimal. Divide 15 by 100 or move the decimal place two spots to the left.

15/100= 0.15      or        15.0 --> 1.5 --> 0.15

0.15 * $120

$18

Since it is a discount, subtract $18 from the regular price of $120.

$120-$18

$102

Next, find the tax.

Multiply the tax rate, 5% by the price of the discounted CD player, $102

tax rate * discounted price

5% * $102

Convert 5% to a decimal. Divide 5by 100 or move the decimal place two spots to the left.

5/100= 0.05    or        5.0 --> 0.5 --> 0.05

0.05* $102

$5.10

Since it is tax, add $5.10 to the discounted price of $102.

$102 + $5.10

$107.10

Russell will pay $107.10 for the CD Player after a discount and tax.

Answer:

a little bit confusing

The expressions also represent Lindsay's video game score is 500 + (-280). The correct option is D.

Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.

Numbers (constants), variables, operations, functions, brackets, punctuation, and grouping can all be represented by mathematical symbols, which can also be used to indicate the logical syntax's order of operations and other features.

Given that Lindsay is playing a video game. She begins with an initial score of 500 points but loses 280 points throughout the game.

The expression will be written as below:-

E = 500 + (-280)

Therefore, the expressions also represent Lindsay's video game score is 500 + (-280). The correct option is D.

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Answer: 2, 3, 6 and 7.

Step-by-step explanation:

We have four natural numbers A, B, C and D.

such that all of these numbers are smaller than 10, and:

A < B < C < D.

A, B and C are the ages of the smaller ones, and D is the age of the larger kid.

Now we have the relation

A^2 + B^2 + C^2 = D^2

We can write this as:

D = √(A^2 + B^2 + C^2)

And remember that D must be smaller than 10, then now we can play with the numbers A, B and C in order to find D.

Suppose for example:

A = 1, B = 2, C  = 3

D = √( 1^2 + 2^2 + 3^2) = √(1 + 4 + 9) = √14

This is not a whole number.

Then we have that A^2 + B^2 + C^2 must be a perfect square.

The perfect squares we can aim for are:

4*4 = 16

5*5 = 25

6*6 = 36

7*7 = 49

8*8 = 64

9*9 = 81

now, looking at that comes to my mind to try to reach the 49.

because we can take the 36, add 4 to that (4 = 2*2) and then add 9 (9 = 3*3)

A^2 + B^2 + C^2 = 49

where we can use:

A = 2. B = 3 and C = 6

2^2 + 3^2 + 6^2 = 4 + 9 + 36 = 49

Then we have:

D = √(2^2 + 3^2 + 6^2 ) = √49 = 7

Then the ages of the children (for smallest to largest) are:

2, 3, 6 and 7.

Answer:

1/5 or 0.2

Step-by-step explanation:

Answer:

AC=AB+BC

60=2x+3+3x+7

60=2x+3x+3+7

60=5x+10

60-10=5x

50=5x

x=10

Answer:

I dont understand what their asking but there are three problems I do know. 2x+5=19 is a equation A=2l+2w is an equation and 3w+4 is an expression.

Step-by-step explanation:

Answer:

0

Step-by-step explanation:

Answer:

Zero

Step-by-step explanation:

Answer:

-17

Step-by-step explanation:

Answer: in a sunny spot of the classroom and im guessing 95?

Step-by-step explanation:

The lines AB and CD are parallel lines.

The slope of the line is the ratio of the rise to the run, or rise divided by the run. It describes the steepness of line in the coordinate plane.

The slope intercept form of a line is y=mx+b, where m is slope and b is the y intercept.

The slope of line passing through two points (x₁, y₁) and (x₂, y₂) is

m=y₂-y₁/x₂-x₁

The slope of line AB is m=2+1/-4+8

m=3/4

The slope of line CD is m=9/12=3/4

Both the lines AB and CD having the same slopes.

In parallel lines the slope will be same.

Hence, the lines AB and CD are parallel lines.

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Answer:

grams

Step-by-step explanation:

Miles measures distance

Looking through the given options; acres, inches, metres and yards are also units of length.

So, we can conclude that they are commensurable with miles.

However, grams measures weights.

Hence,

From the list of given options; grams is incommensurable with miles because they measure different entities.

Answer:

acres and grams

Step-by-step explanation:

Miles is a measure of distance. Acres is a measure of area, and grams is a measure of mass. Knowing this you should know that these two are the answer. Your welcome!

Answer:

32

Step-by-step explanation:

you subtract 25 by 57 to show how many necklaces stacy made which is t.

Answer:

  y = (∛x)/3

Step-by-step explanation:

To undo the multiplication by 27, you multiply by its inverse:

  (1/27)y = (1/27)(27x^3)

  y/27 = x^3 . . . . . . . . . . . simplify

To undo the cube, you take the cube root:

  (∛y)/(∛27) = ∛(x^3)

  (∛y)/3 = x

Apparently, you want the inverse function, so you swap the variables:

  y = (∛x)/3

_____

You can swap the variables at the beginning or end. It doesn't matter. If you do it at the beginning, you have ...

  x = 27y^3

and you're solving for y. You use the same inverse operations that we used above.

Answer:

7x8 is 56 plus four plus one equals 61

Step-by-step explanation:

Answer:

B

Step-by-step explanation:

Using the conversion

1 Kg = 1000 g , then

3745 ÷ 1000 = 3.745 Kg

Answer:

absolutley no solutions

Step-by-step explanation:

Step-by-step explanation:

3x - y = 74

4y = x

Replace x in the first expression by 4y

3x - y = 74 ➡ 3(4y) - y = 74

12y - y = 74

11y = 74

y = 74/11 we can use this to find x

4y = x

4 × 74/11 = x

296/11 = x

Answer:

See below (I hope this helps!)

Step-by-step explanation:

When dividing exponential terms of the same base, we can simply subtract the exponents, therefore:

[tex]\frac{x^{6} }{x^{8} } = x^{(6-8)} = x^{-2}[/tex]

Answer:

623.64

Step-by-step explanation:

Really?!? Just use a calculator. I think thats right haven't done this in a while