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2 years ago

Tell me basic arithmetic topics

Mathematics

2 answers:

AlexFokin [52]2 years ago

8 0

Step-by-step explanation:

whole numbers, place values etc.

Maurinko [17]2 years ago

6 0

Addition, subtraction, multiplication, division, factoring, fractions etc

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Pls help me I idk how to do this anyone who helps gets a like but u have to tell the answer and pls explain find volume

IRISSAK [1]

Answer:

13(4++3-+$++3++3;3--+3;

6 0

2 years ago

One serving of Mike’s crackers has 150 calories and a mass of 30 grams. How many calories are in 6 grams of the crackers?

Elodia [21]

$\bf \begin{array}{ccll}
calories&grams\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
150&30\\
c&6
\end{array}\implies \cfrac{150}{c}=\cfrac{30}{6}\implies \cfrac{150\cdot 6}{30}=c$

3 0

3 years ago

Verify the identity<br><br> cos quantity x plus pi divided by two = -sin x

In-s [12.5K]

Answer:

Identity is verified.

Step-by-step explanation:

We have to verify the identity $cos(x+\frac{\pi }{2}) = (- sinx)$

To prove any identity we always prove one side(either left hand side or right hand side) of the equation equal to the other side.

In this identity we take the left hand side first

$cos(x+\frac{\pi}{2})$

$=cosx\times cos(\pi/2)-sinx\times sin(\pi/2))$ (as we know cos(a+b) = cosa×cosb-sina×sinb)

$= cosx\times0-sinx\times1$

$= 0-sinx$

= - sinx ( Right hand side)

Hence identity is proved.

6 0

3 years ago

Two step equations <br> 6=a/4+2

anygoal [31]

6=a/4+2
4=a/4
4*4=a
16=a

6 0

2 years ago

Solve |2x - 5| = 4 I dont know what you solve for

ICE Princess25 [194]

Hello!

Answer:

$\huge\boxed{x = 1/2, 9/2}$

|2x - 5| = 4

Solve for the negative and positive expressions:

2x - 5 = 4

2x = 9

x = 9/2

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

-(2x - 5) = 4

-2x + 5 = 4

-2x = -1

x = 1/2.

Therefore, the solutions are x = 1/2 and 9/2.

6 0

3 years ago