3 years ago

Do the ratios 4:12 and 5:15 form a proportion

Mathematics

2 answers:

guajiro [1.7K]3 years ago

8 0

Answer is up here ^^^

Strike441 [17]3 years ago

5 0

Answer:

4:12=5:15

in propotion form

4/12=5/15

Step-by-step explanation:

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Elena L [17]

Answer:

i belive it is 900

Step-by-step explanation:

(n-2)180

(7-2)180

(5)180

900

5 0

3 years ago

What's the input lol *photo attatched*

marishachu [46]

-20+1= -19
-19/2= -9.5

Check:
-9.5x2= -19
-19-1= -20

3 0

2 years ago

If the measure of angle 3 is 80 degrees and the measurer of angle 6 is (2x)

spin [16.1K]

Answer:
X = 40
Explanation: (2x) = 80
80/2 = 40
X = 40 degrees

5 0

2 years ago

Which of the following is a reflection of ( 2,4 ) across the x-axis?

fiasKO [112]

Answer:

(2,-4)

Step-by-step explanation:

(2,4) is located in Quadrent I (+,+), if you reflect over the x-axis, it would be in Quadrent IV (+,-).

if you dont understand I suggest you draw a coordinate plane on a graphing notebook.

7 0

3 years ago

The width of a rectangle is the length minus 2 units. the area of the rectangle is 35 units

Mariana [72]

Answer:

$Length=7units\\\\Width=5units$

Step-by-step explanation:

Width=(Length-2) units

W=(L-2) units

Area of the rectangle= 35 square units

Area = length* Width

$35= L*(L-2)\\\\35=L^2-2L$

Subtracting 35 both sides:

$L^2-2L-35=0$

Solving the quadratic equation for 'L' ;

Using factorization:

$L^2+5L-7L-35=0$

Taking common from the equation :

$L(L+5)-7(L+5)=0\\\\(L+5)(L-7)=0\\\\L+5=0\\\\L=-5$

$L-7=0\\\\L=7$

The length cannot be negative, therefore Length(L)= 7

$Width=Length-2\\\\=7-2\\\\=5 units$

$Length=7units\\\\Width=5units$

8 0

3 years ago