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3 years ago

Can you estimate both of these addends 7 2/5 + 6 3/8 to get your estimated answer?

Mathematics

1 answer:

jek_recluse [69]3 years ago

3 0

You can estimate 7 2/5 to 7 and estimate 6 3/8 to 6 1/2. And add them both up. If u add them, you get 13 1/2

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Which of the sets shown includes the elements of set Z that are both odd numbers and multiples of 7?

vesna_86 [32]

Answer:

B. {-21.-7. 7. 21)

Step-by-step explanation:

The set made up of odd numbers and multiples of 7 is given as;

{-21.-7. 7. 21)

Multiples of 7 are usually those numbers where 7 is factor.

Odd numbers are numbers that cannot be divide by 2.

So, the most fitting answer is B.

4 0

3 years ago

Based on the side lengths given (a, b, and o, which triangles are right triangles?

Cloud [144]

Answer:

2 & 3

Step-by-step explanation:

Pythagorean Theorem is $a^2+b^2=c^2$ .

If the values given in each option satisfy the theorem, the sides will make a right triangle.

<h3>For Option One:</h3>

$4^2+6^2=8^2\\=> 4^2=16\\=> 6^2=36\\=>8^2 =64\\16+36=64\\\boxed{52\neq 64}$

The sides would not make a right triangle.

<h3>For Option Two:</h3>

$6^2+8^2=10^2\\=> 6^2 = 36\\=> 8^2=64\\=> 10^2=100\\36+64=100\\\boxed{100=100}$

The sides would make a right triangle.

<h3>For Option Three:</h3>

$5^2+6^2=\sqrt{61}^2\\ => 5^2=25\\=>6^2=36\\=>\sqrt{61}^2=61\\ 25+36=61\\\boxed {61=61}$

The sides would make a right triangle.

<h3>For Option Four:</h3>

$6^2+9^2=12^2\\=> 6^2=36\\=>9^2=81\\=>12^2=144\\36+81=144\\\boxed{117\neq 144}$

The sides would not make a right triangle.

The correct answer should be options two and three.

6 0

3 years ago

Anna wants to rent movies from either Service A or Service B. Service A charges $37.92 as a subscription fee with a charge of $2

goldenfox [79]

I think it is $76.80

7 0

3 years ago

Read 2 more answers

I ports

horrorfan [7]

Answer:

25%.

Step-by-step explanation:

125 is a quarter of 500. A quarter of something is 25 % so yeah.

8 0

3 years ago

Can someone help me pls

Pepsi [2]

Answer:

jen

Step-by-step explanation:

Jordan's total number of sit-ups

20+24+28+32= 104

Jen's total number of sit-ups

40+48+56+62=208

divide Jen's sit-ups by Jordan's sit-ups

208/104=2

3 0

3 years ago