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3 years ago

Fraction calculator 66 1/2 - 43=

Mathematics

2 answers:

zhuklara [117]3 years ago

6 0

Answer:

$\frac{47}{2}$

Step-by-step explanation:

66 $\frac{1}{2}$ - 43 = 47/2

skelet666 [1.2K]3 years ago

4 0

Answer:

47/2

Step-by-step explanation:

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Problem: Construct a triangle with side lengths 6, 6, and 6. What are the angle measures for the triangle?

Aleonysh [2.5K]

Answer:

All angles are 60 degrees

Step-by-step explanation:

Because all sides are equal , all angles are equal also.

180 / 3 = 60

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3 years ago

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a square swimming pool has a cement sidewalk around it. The sidewalk is the same width all the way around. The outside perimeter

VLD [36.1K]

Answer:

175 square feet

Step-by-step explanation:

the area of the whole thing is 400 ft. (20 x 20=400)

i got the 20 from the perimeter b/c 20+20+20+20=80

then subtract the area of the pool from 400 to get 175.

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3 years ago

Which if the following summation notations represent this series?

kati45 [8]

Answer:

Step-by-step explanation:

Let's look at the sequence:

$3,8,13,\cdots$

The sequence has a common difference. We say it has a common difference because 8-3 has the same value as 13-8.

The common difference is what these differences are equal which is 5.

The sequence is therefore linear or arithmetic (same thing).

So it has form $y=mx+b$ where the slope/common difference is 5.

$y=5x+b$

We need to find the $y-$ intercept $b$ .

The list of points is related to the above sequence:

$(x,y)$

$(1,3)$

$(2,8)$

$(3,13)$

I only need one of these points to find $b$ .

Let's use the first one since it has smallest numbers and I don't wish to use the calculator unless I really have to.

$y=5x+b$ with $(x,y)=(1,3)$ :

$3=5(1)+b$

$3=5+b$

Subtract 5 on both sides:

$3-5=b$

$-2=b$

So the equation for the set of points is:

$y=5x-2$

Now they are using $i$ instead of x[/tex]:

$a_i=5i-2$

Since all summations begin at $i=1$ , then the choices are done to either choice C and choice E.

I need to find how many terms are in the given series. The last number is 33. So what term number is associated with the value 33.

$a_i=5i-2$

$33=5i-2$

Add 2 on both sides:

$35=5i$

Divide both sides by 5:

$\frac{35}{5}=i$

$7=i$

So there are 7 terms and the 7th term is 33.

So the answer is choice E.

5 0

4 years ago

(-4^-2) (49^-1/2)<br><br> Evaluate the expression

Marizza181 [45]

Answer:

-1/112

Step-by-step explanation:

$-4^{-2}=\frac{1}{-4^2}=-\frac{1}{16} \\ \\ 49^{-1/2}=\frac{1}{49^{1/2}}=\frac{1}{7} \\ \\ (-1/16)(1/7)=-1/112$

5 0

2 years ago

A store must sell at least 400 worth of wallets and bags per day each wallet costs 20 each and each item cost 40 each. The store

maw [93]

Answer:25

Step-by-step explanation: 16x25=400

8 0

4 years ago