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valentina_108 [34]
2 years ago
8

Which is an equivalent ratio to 7:5? 14:12 21:10 21:15

Mathematics
2 answers:
Lady bird [3.3K]2 years ago
6 0

Answer:

21 : 15

Step-by-step explanation:

Multiplying the parts of the ratio by the same value creates an equivalent ratio

Given

7 : 5 ← multiply both parts by 3, gives

= 21 : 15

labwork [276]2 years ago
3 0

Answer:  C

Step-by-step explanation:

21/ 15

CANCEL BOTHBY 3

7/5

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mel-nik [20]
Answer: x= log18 (10) +1/2
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8 0
3 years ago
What is the answer of this problem if mr.reyes gave his daughter P250 on her 18th birthday and intends to increase this by P150
o-na [289]
28 - 18 = 10.
150 x 10 = 1500
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4 0
3 years ago
Read 2 more answers
The angle θ lies in Quadrant II. sinθ=3/4 What is cosθ ?
Elden [556K]

Hello from MrBillDoesMath

Answer:

[email protected] = - sqrt(7)/ 4    

which is choice B

Discussion:

This problem can be solved by drawing triangles and looking at ratios of sides or by using the trig identity:

([email protected])^2 + (sin2)^2 = 1

If [email protected] = 3/4 , the

([email protected])^2 + (3/4)^2 = 1 =>              (subtract (3/4)^2 from both sides)

([email protected])^2 = 1 - (3/4)^2  = 1 - 9/16   = 7/16

So...... taking the square root of both sides gives

[email protected] =  +\- sqrt(7)/ sqrt(16) = +\- sqrt(7)/4

But is [email protected] positive or negative?  We are told that @ is in the second quadrant and cos(@) is negative in this quadrant, so our answer must be negative

[email protected] = - sqrt(7)/ 4    

which is choice B


Thank you,

Mr. B


4 0
3 years ago
Calculate the area of triangle ABC with altitude CD, given A (6, -2), B (1, 3), C (5, 5), and D (2, 2).
Flura [38]

Answer:

15 units

Step-by-step explanation:

I just took this geometry test with the same question. Its 15

3 0
3 years ago
Read 2 more answers
The Polar Express
Igoryamba

Answer:

for 12-8: 33.33

or

for 8-4: 50

or

for 12-4: 66.67

Step-by-step explanation:

4 0
2 years ago
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