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4 years ago

Constant Rate Pre-Algebra

Mathematics

1 answer:

Alja [10]4 years ago

5 0

It is o dark to see it

You might be interested in

Quick please!

Soloha48 [4]

Answer:

3(4j + 7 + 2j)

12j + 21 + 6j

12j + 6j + 21

18j + 21 ----- (1)

3(6j +7)

18j + 21 --------(2)

eq 1 = eq. 2

both are equal

5 0

2 years ago

Harish has ruppees 80. he wants to buy toffees,8/5 ruppees. how many toffees can he buy?

Elodia [21]

U set up an equation: 80 x 8/5
Then u can cross multiply bc 5 goes into 80
It goes into 80 exactly 16 times
So new equation: 16 x 8
Multiply that out and u get 128

5 0

3 years ago

7.37×10 with an exponent of nine

Harman [31]

Answer:

We get 6 x10^7 with a 4dp of 9599

9599

/ \

29 331

Step-by-step explanation:

Rounded to 4dp

64151584.9599

6 0

3 years ago

Sin A tan A/ 1 - cos A = 1+ sec A

aalyn [17]

$\text{L.H.S}\\\\=\dfrac{\sin A \tan A}{1- \cos A}\\\\\\=\dfrac{\sin A \cdot \tfrac{\sin A}{\cos A} }{ 1- \cos A}~~~~~~~~~~~~~~~~~~~~~~~~~~~~~;\left[\tan A = \dfrac{\sin A }{\cos A}\right]\\\\\\=\dfrac{\tfrac{\sin^2 A}{ \cos A}}{1- \cos A}\\\\\\=\dfrac{\sin^2 A}{\cos A(1-\cos A)}\\\\\\=\dfrac{1-\cos^2 A}{\cos A( 1- \cos A)}~~~~~~~~~~~~~~~~~~~~~~~~;[\sin^2 A + \cos^2 A = 1]\\\\\\$

$=\dfrac{(1+ \cos A)(1 - \cos A)}{\cos A(1 - \cos A)}\\\\\\=\dfrac{1+ \cos A}{ \cos A}\\\\\\=\dfrac{1}{\cos A} + \dfrac{\cos A}{ \cos A}\\\\\\=\sec A + 1 \\\\\\=1+ \sec A\\\\\\=\text{R.H.S}\\\\\text{Proved.}$

8 0

2 years ago

Ajla went out for lunch and the meal cost $30. She wants to tip 18% on the cost of the meal ($30). The tax is 7.5%. What is the

Arisa [49]

Answer:

ФHello wonderful personФ

Your answer should be:

$37.65

Step-by-step explanation:

30 times 18%(.18)+30 times 7.5% = 7.65 + 30 = 37.65

Please mark brainliest!

<h2>First answer</h2><h3>Hope this helps</h3>

7 0

3 years ago

Read 2 more answers