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alexdok [17]
3 years ago
6

5:c :: 30:42 solve the proportion

Mathematics
1 answer:
Ber [7]3 years ago
3 0
C = 7
thirty divided by 6 is five
so divide fortytwo by 6 is seven
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HELP ME PLEASE !!!!!!!!
Olenka [21]

Answer:35

Step-by-step explanation:

if you added 85,70, and 50 you would get 205 and that is more than the number of students that were interviewed so 35 would be the correct answer

3 0
3 years ago
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Keiko is mixing 4 cups of concrete to make a stepping stone. She needs 1.5 cups of sand and 2.5 cups of cement mix. Which statem
Charra [1.4K]
Ur answer would be B.. Hope it helps let me know if its right or not!
8 0
3 years ago
I'm confused on how to find x​
azamat

Answer:

x = 2

Step-by-step explanation:

Since this is a 45-45-90 triangle, the 2 legs will be the same, meaning that y will also be \sqrt2.

We can then solve for x using the Pythagorean theorem:

\sqrt2^2+\sqrt2^2=x^2\\2+2=x^2\\4=x^2\\x=2

Or, we could use a quicker approach: if the triangle is a 45-45-90 triangle, the hypotenuse will be \sqrt2 times the length of 1 leg. It essentially does the same thing; it's just faster so you could save time on tests.

7 0
3 years ago
Are these 3 equations equal 2.02, 0.02, 0.03 ? Show me 3 decimals that are equivalent
andriy [413]
No those decimals are not equal because if you put them into fractuons it would be this :

2 2/100
2/100
3/100
which do not equal the same thing

Equal decimals are

0.3
0.30
0.300

Because
0.3= 3/10
0.30= 30/100 = 3/10
0.300= 300/1000 = 3/10

They all end up being 3/10 in fraction form...
8 0
3 years ago
Lines AB and CD (if present in the picture) are straight lines. Find x. Give reasons to justify your solutions.
ziro4ka [17]

Answer:

1. Angle Addition Postulate/Theorem

2. 90°

3. m<AOC; Vertical Angles

4. 90°; 110°

5. 20°

Step-by-step explanation:

1. m<DOB = m<DOE + m<BOE (Reason: Angle Addition Postulate/Theorem)

2. m<DOB = 90° + x (Reason: Substitution)

Note: m<DOE is a right angle.

3. m<DOB = m<AOC (Reasons: Vertical Angles)

4. 90° + x = 110° (Reasons: Substitution)

5. x = 20° (Reasons: Algebra)

Note how we got 20° by applying algebra:

90° + x = 110°

Subtract 90° from both sides

90° + x - 90° = 110° - 90°

x = 20°

8 0
3 years ago
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