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VikaD [51]
3 years ago
13

What is (4x + 7) - (8 - 3x) in standard form?

Mathematics
1 answer:
sweet [91]3 years ago
7 0
(4x + 7)- (8- 3x) written in standard form is 7x-1 :)
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I need answers asap... please
aleksandrvk [35]

Answer:

see explanation

Step-by-step explanation:

(4)

consider the left side

factor the numerator

cosx - cos³x = cosx(1 - cos²x)

\frac{cosx(1-cos^2x)}{sinx}[/tex = [tex]\frac{cosxsin^2x}{sinx}

cancel sinx on numerator/denominator

= cosxsinx =right side ⇒ verified

(5)

Consider the left side

expand the factors

(1 + cotΘ)² + (1 - cotΘ)²

= 1 + 2cotΘ + cot²Θ + 1 - 2cotΘ + cot²Θ

= 2 + 2cot²Θ

= 2(1 + cot²Θ) ← 1 + cot²Θ = cosec²Θ

= 2cosec²Θ = right side ⇒ verified

(6)

Consider the left side

the denominator simplifies to

cosxtanx = cosx × \frac{sinx}{cosx} = sinx

\frac{sin^2x(secx+cosecx)}{sinx}

= sinx( \frac{1}{cosx} + \frac{1}{sinx})

= \frac{sinx}{cosx} + \frac{sinx}{sinx}

= tanx + 1 = right side ⇒ verified











3 0
3 years ago
How many cups does a gallon equals
kolbaska11 [484]

Answer:

Step-by-step explanation:

There are 16 cups in a gallon

5 0
3 years ago
Read 2 more answers
Solve the inequality below<br> -8x + 4 &gt; 20<br> Include x and number in answer
Genrish500 [490]

Answer:

x<-2

Step-by-step explanation:

You first subtract 4 from both sides. Then you divide both sides by -8 (note: when you multiply or divide by a negative the sign flips. Then you get your answer

7 0
3 years ago
Helppp me with this ,I will mark brainlest
Vesnalui [34]
1) B 60 roses 10 carnations
2) D (3,-2),(-2,-6),(3,4)
3 0
2 years ago
00:00
Furkat [3]

Answer:

-2

Step-by-step explanation:

Subtracting a negative number is the same as adding it, so this is basically just negative 8 plus 6, which is -2. Don't know who was right though, you kinda left that part of the question out.

5 0
3 years ago
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