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butalik [34]
3 years ago
12

Help please thanks!

Mathematics
2 answers:
g100num [7]3 years ago
4 0

I got 1:4

What I did was added all the catfish samples which was 15. Then I added all the samples together and got 60. I then put them in the ratio and simplified them.

15:60

1:4

lesya692 [45]3 years ago
4 0

Answer:

1:4

Step-by-step explanation:

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In the figure, what is the area of the shaded region?
Hatshy [7]
Use Pythagoras theorem
{(6 + 3)}^{2}  +  {x}^{2}  = {15}^{2}  \\  {x}^{2}  = 144 \\ x = 12
Two triangles are similar
\frac{6}{9}  =  \frac{y}{12}  \\ y = 8
(6+3)*12/2 - 6*8 /2 = 30
5 0
3 years ago
Read 2 more answers
6. How many 4 digit odd numbers can be formed if no digit can be repeated?
ale4655 [162]
1, 3, 5, 7, 9 are the possible digits

meaning you have 5! possible combinations or 120 combinations
6 0
3 years ago
Two sides of a triangle are given as 28 inches and 42 inches. find all possible lengths for the third side of the triangle
timofeeve [1]
The longest side of  a triangle must be less than the sum of the other 2 sides

2 senarios

the 3rd side is the longest
the 3rd side is not the longest



for the 3rd side is the longest

3rdside<28+42
3rdside<70


for 3rd side isn't the longest
42 is longest
42<28+3rdside
14<3rdside

so we've got
3rdside<70 and 14<3rdside

so
14<3rdside<70

the 3rd side can be any number from 14in to 70in except 14in and 70in
6 0
3 years ago
Seattle, wa and san francisco, ca lie on the same longitudinal line. san francisco is at 38° latitude and seattle is at 47° lati
Varvara68 [4.7K]

Step 1.

Calculate measure of angle α:

47^o-38^o=9^o

Step 2.

Calculate what fraction of the angle 360° ​​is the angle α:

\dfrac{9^o}{360^o}=\dfrac{1}{40}

Step 3.

Calculate the circumference of the Earth (circle):

C=2\pi r\to C=2\pi\cdot4000=8000\pi\ mi

Step 4.

The length of arc is equal 1/40 of the circumference:

\dfrac{1}{40}C=\dfrac{1}{40}\cdot8000\pi=200\pi\ mi

\pi\approx3.14\to\dfrac{1}{40}C\approx200\cdot3.14=628\ mi


<h3>Answer: A) 628 miles</h3>

8 0
3 years ago
Robert borrowed $750 from his parents. He promised to repay the loan by giving his parents at least $67 from his paycheck each w
Luda [366]

To answer this question we can propose the following equation:


d=750 -x(67)


Where:


x is the number of weeks elapsed.


d is the debt depending on the weeks.



Robert promised to pay at least $ 67 each week.


Therefore, after 5 weeks the debt of rober should be:


d\leq750-5*67

d\leq415


Then scenario A) is possible because 150.



After 6 weeks:


d\leq750-6*67


d\leq348

Then scenario B) is possible because 200.



After 7 weeks


d\leq750-7*67


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Then scenario C) is possible because 250.



After 8 weeks

d\leq750-8*67

d\leq214

So scenario D) is NOT possible because 300>214



Finally the correct answer is option D.

3 0
3 years ago
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