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DaniilM [7]
3 years ago
13

HELPPPPPPPPPP Please i don't know what to do

Mathematics
2 answers:
-BARSIC- [3]3 years ago
6 0
That’s a rubric tho…
DedPeter [7]3 years ago
6 0

Answer:

Thats a rubric not an assignment

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If Radhika adds these two numbers and represents the sum on an abacus, and if the beads on the ten's place are 2 and the beads o
xxTIMURxx [149]

Answer:

Explained below.

Step-by-step explanation:

A standard abacus is a traditional method used to perform basic mathematical calculations, such as addition, subtraction, multiplication and division.

There are 5 rods on a standard abacus.

The shape of the abacus has a series of vertical rods on which a number of beads are placed.

Each bead on a particular rod is considered as 1 unit, i.e. if there are three beads on a rod, the value of that rod is 3.

The last rod on an abacus is for the unit's place, the second last rod is for the ten's place, the third last rod is for the hundredth's place, the fourth last rod is for the thousandth's place and the fifth rod is for the ten thousandth's place.

8 0
3 years ago
What if this function simplified?
almond37 [142]

Hi!

Let's first expand the cotangent of theta.

You'll probably know that tangent will be "y/x", or \frac{sin(x)}{cos(x)}, and cotangent is the reciprocal of this, meaning that it is "x/y" or \frac{cos(x)}{sin(x)}.

That means that we are now given this equation.

cos(x)\frac{cos(x)}{sin(x)}+sin(x)

That'll multiply to:

\frac{cos^2(x)}{sin(x)}+sin(x)

We'll want a common denominator to add by multiplying sin(x) to both top and bottom of the second term:

\frac{cos^2(x)}{sin(x)}+\frac{sin^2(x)}{sin(x)}

\frac{cos^2(x)+sin^2(x)}{sin(x)}

Pythagorean Identity states that sin^2(x)+cos^2(x)=1, so substitute that in:

\frac{1}{sin(x)}

Which simplifies to:

csc(x)

Hope this helps!

7 0
3 years ago
Is a simple random sample is valid true or never true or always or sometimes
hodyreva [135]
Sometimes because it might not always be true
3 0
3 years ago
Thehe minimum weight of the 20 student is 20 kg.If their range is 20 kg,find the maximum weight and the coefficient of range​
Anastasy [175]

Answer:

1/3

Step-by-step explanation:

Range=x maximum (xm) –x minimum (x0)

xm=20+20=40

Coefficient of Range= xm–x0/xm+x0

=40-20/40+20

=20/60

=2/6

=1/3

5 0
3 years ago
A lottery game has balls numbered 0 through 13. What is the probability of selecting an even numbered ball or a 7
Alekssandra [29.7K]
6/13 of choosing an even number and 1/13 for seven
there's only 6 even numbers and only one 7. out of 13
3 0
3 years ago
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