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Norma-Jean [14]
3 years ago
13

Turner mesuares 3/4 foot of a ribbon for a coustume. He needs 9 pieces of ribbon with the same length

Mathematics
2 answers:
wariber [46]3 years ago
8 0

Answer:

6¾

Step-by-step explanation:

¾ * 9/1 = 287/4

27/4=6 ¾

which equals 6.75

AlekseyPX3 years ago
7 0
That answer is 6.75
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The sum of two numbers is 20. The difference between three times the first number and twice the second is 40. Find the two numbe
viva [34]

The numbers are 16 and 4

Reason: 16+4=20 and (16*3)-(4*2)=48-8=40

4 0
2 years ago
How do you use benchmark to estimate 2.81 + 3.72
Luba_88 [7]
Round 2.81 to 2.8 and 3.72 to 3.7. Add both together to get 6.5
7 0
3 years ago
Jake is going to call one person from his contacts at random. He has 30 total contacts. 16 of those contacts are people he met a
Archy [21]
Answer: P = 8/15

Explanation:

There are 30 contact in total

And there are 16 contacts are people he met at school

P = 16/30 = 8/15
4 0
3 years ago
Read 2 more answers
Which of the following are identities?
podryga [215]

Answer:

A. III only

Step-by-step explanation:

In mathematics, an identity is one of the characteristics of algebraic expressions.

Given variable a and b in an algebraic expression, an identity is defined as an equality that remains the same no matter the values that we choose for either variable a or b.

Identity in mathematics makes it very easy to solve algebraic expressions. The two sides of an identity in an algebra can easily be exchanged for each other.

In the above question, we are given 3 Options.

I) 3(5 + 2x) = 15 + 6x

II) y = x + 3

III) (x² - y²) = (x + y) (x - y)

Option I) 3(5 + 2x) = 15 + 6x

Is showing distributive property in mathematics.

Distributive property is :

a(b + c) = ab + ac

Option I is not an identity , therefore it is wrong.

Option II) y = x + 3 is just an algebraic expression.

Only Option III is an identity. This is because it follows the rule of

(a² - b²) = (a + b) (a - b)

We can prove and confirm this be solving the algebraic expression

(x + y) (x - y)

We expand the bracket

x² - xy +xy - y²

x² - y²

Therefore, option A is the correct option.

6 0
3 years ago
Read 2 more answers
5 1/2 + 3 4/5 + 1 1/4 =
ratelena [41]

Answer:

10\frac{11}{20}

Step-by-step explanation:

5\frac{1}{2} + 3\frac{4}{5} + 1\frac{1}{4}

<u>1.Find the LCM(Least Common Multiple).</u>

That would be 20.

<u>2.Multiply so all denominators are equal.</u>

5\frac{10}{20} + 3\frac{16}{20} + 1\frac{5}{20}

<u>3. Add</u>

<u></u>9\frac{31}{20}

<u>4. Simplify</u>

<u></u>10\frac{11}{20}

6 0
1 year ago
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