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3 years ago

How many solutions does this equation have? 3(x+2) - 10 = 4x - 6 + x

Mathematics

2 answers:

bulgar [2K]3 years ago

8 0

Answer:

IT EQUALS 150000000000000000000000000000

Step-by-step explanation:

andrezito [222]3 years ago

7 0

X =1

See explanation

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Use De Morgan's laws to write an equivalent statement for the sentence. The bus does not have an engine or the people do not hav

DanielleElmas [232]

Answer:

A. It is false that the bus has an engine and the people have money.

Step-by-step explanation:

Given statement is -

The bus does not have an engine or the people do not have money.

The De Morgan's laws states that the complement of the union of two given sets is the intersection of their complements.

Also, the complement of the intersection of these two sets is the union of their complements.

negative (p ∨ q)⇔ p ∧ negative q

So, here option A is correct. It is false that the bus has an engine and the people have money.

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3 years ago

a deep sea diver changes his position to the surface of the water by -7/2 meters per minute. write and evaluate an expression to

hram777 [196]

Answer:

sdfghjk

Step-by-step explanation:

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5 0

3 years ago

2x + 3y = -1 5r 2y = 12?

Lina20 [59]

That’s correct i think:)

3 0

3 years ago

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Which ratio is equal to 27 : 81?

Elena-2011 [213]

Answer:

3:9 u can reduce it again to 1:3

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3 years ago

Noah is buying a pair of jeans and using a coupon for 10%off. The total price is $56.70 which includes $2.70 in sales tax. Noah’

lora16 [44]

Answer:

See below.

Step-by-step explanation:

So, we know that Noah's purchase can be modeled by the equation:

$x-0.1x+2.70=56.70$

Part 1)

The solution to the equation will be the value of x.

In this case, x will represent the original price of the jeans.

We know that Noah has a coupon for 10% off the original price of the jeans.

So, 0.1x will represent how much of the original price Noah gets a a discount on.

Therefore, (x - 0.1x) represents the total cost of the jeans after the coupon.

So, x is our original price of the jeans.

Part 2)

To verify that 70 is not a solution, we can simply substitute 70 for x and check whether or not the equation is true. So:

$(70)-0.1(70)+2.7\stackrel{?}{=}56.70$

Multiply:

$70-7+2.7\stackrel{?}{=}56.7$

Subtract:

$63+2.7\stackrel{?}{=}56.7$

Add:

$65.7\neq56.7$

However, we can verify that 60 is the solution by substituting. So, substitute 60 for every x:

$(60)-0.1(60)+2.7\stackrel{?}{=}5.7$

Multiply:

$60-6+2.7\stackrel{?}{=}56.7$

Subtract:

$54+2.7\stackrel{?}{=}56.7$

Add:

$56.7\stackrel{\checkmark}{=}56.7$

So, 60 is indeed the solution and is the value of x.

So, this means that $60 was the original price of the jeans.

8 0

3 years ago

Read 2 more answers