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Tresset [83]
3 years ago
13

I just need help with these math questions

Mathematics
2 answers:
Svetach [21]3 years ago
7 0

1. Proportions are relatively easy; we can reduce the fractions or check the cross product

4/20 = 1/5 not 1/6

28/36 = 7/9, CHECK

14/18=7/9,  21/27=7/9  CHECK

30/80=3/8, 6/18=1/3, nope

2. Let's check cross products on these

3(40)=120, 5(24)=120, no these are proportions

30(5)=150, 15(10)=150, no, proportions

9(4)=36, 3(14)=42,  CHECK 9/14 is not 3/4

7(24)=14(12) true without multiplying it out; these are proportional

3.

4/16 = m/24

24(4) = 16 m

6(4)(4) = 16 m

Answer: m = 6

4.

t/16 = 40/50 = 4/5

5t = 16(4)=64

10t = 128

Answer: t = 12.8



mestny [16]3 years ago
4 0

Answer:

See below.

Step-by-step explanation:

1.   7/9 , 28/36      Because 7*4 = 28 and 9*4 = 36

     14/18, 21/27     Because 14 * 1.5 = 21 and 18*1.5 = 27

2.  9/14 , 3/4        Because 9/3 = 3  but 14/4 = 3. 5

3.     m = 6

4     12.8

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3 years ago
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Rudiy27

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3 years ago
The number -3 can be classified as which of the following?
sp2606 [1]

<u>Answer</u>:

-3 is an integer, rational number and real number , so correct option id D) that is all of the above.

<u>Explanation:</u>

Integer is all natural number  that a 1 , 2 , 3 , 4 ……. And zero and negative of natural numbers like -1 , -2 , -3 , - 4 ……. So -3 is an integer.

Rational number is the number which can be represented in the form of p/q where p and q are integers and q ≠ 0 . As -3 can be represented as (-3)/1 . hence -3 is also a rational number.

Real number is all number which can be represented on number line. All integers and rational numbers are real numbers . so -3 is also a real number.

Hence as -3 is an integer, rational number and real number , so correct option id D) that is all of the above.

5 0
3 years ago
two students club plan to share a bus on a trip to the capital transportation at lunch for day cost $12 per student one club has
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Answer:

$516

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Read 2 more answers
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