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3 years ago

Which expressions are equivalent to this expression?

Mathematics

1 answer:

Lyrx [107]3 years ago

7 0

Answer:

Option B

Option C

Option D

All of these are correct

Step-by-step explanation:

Option B is correct because:

2x + 1 + 2x + 3 = 4x + 4

=> 4x + 4 = 4x + 4

Option C is correct because:

x + 3x + 4 = 4x + 4

=> 4x + 4 = 4x + 4

Option D is correct because:

2(2x + 2) = 4x + 4

=> 4x + 4 = 4x + 4

Option A is incorrect because:

4(x + 4) = 4x + 4

=> 4x + 16 ≠ 4x + 4

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7.24 + 5.3 = 3m<br><br> what is the true answer ?

laiz [17]

Answer:

7.24 + 5.3 = 3m

=> 3m = 12.54

=> m = 12.54/3

=> m = 4.18

<h2>Answer = 4.18</h2>

8 0

3 years ago

1. When three boys jumped on a weighing scale together, it read 200 kilograms One boy stepped off and it showed 142 kilograms On

Elenna [48]

Answer:

58kg, 70kg and 72kg

Step-by-step explanation:

Starting weight was 200.

Boy 1- Changed from 200 to 142. 200kg - 142kg= 58 kg

Boy 2- Changed from 142 to 72. 142kg- 72kg = 70kg

Boy 3- Last one on the scale and it showed 72kg so his weight is 72kg

3 0

3 years ago

Read 2 more answers

What is the difference in Fahrenheit degrees between a temperature of 0C and a temperature of 15C?

slamgirl [31]

Answer:

$27^{\circ}F$

Step-by-step explanation:

Use formula

$F=1.8C+32$

to convert Celsius to Fahrenheit.

When $C_1=0^{\circ}C,$ then

$F_1=1.8\cdot 0+32\\ \\F_1=32^{\circ}F$

When $C_2=15^{\circ}C,$ then

$F_2=1.8\cdot 15+32\\ \\F_2=27+32=59^{\circ}F$

Difference:

$F_2-F_1=59^{\circ}F-32^{\circ}F=27^{\circ}F$

8 0

3 years ago

Expand the logarithm fully using the properties of logs. Express the final answer in

Ivenika [448]

Answer:

Step-by-step explanation:

To solve the problem, we need to recall the following properties of the logarithms:

$log(x.y)=log(x)+log(y)$

$log(x^y)=y.log(x)$

We have the expression:

$P=log(6x^4)$

Factor 6=2*3:

$P=log(2\cdot 3x^4)$

Apply the property of the product:

$P=log(2)+log(3)+log(x^4)$

Now apply the property of the exponent:

P=log(2)+log(3)+4.log(x)

4 0

3 years ago

Find the value of x needed to make the equation true.

MA_775_DIABLO [31]

Answer: 3 (first choice)

A power to a power gives a multiplication of powers, e.g.,

(7¹⁰)² = 7²⁰

So the left side is 7²⁰ / 7⁴ and we divide the top and bottom by 7 get we

(7¹⁰)² / 7⁴ = 7²⁰ / 7⁴ = 7¹⁹ / 7³

We compare that to the right side 7¹⁹ / 7ˣ and it's clear x=3.

4 0

4 years ago