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Masja [62]
2 years ago
12

True or false: the following equation is in standard form. (x - 4.2)^2 - 3 = 0

Mathematics
1 answer:
natita [175]2 years ago
3 0

Answer:

false

Step-by-step explanation:

standard form cannot contain fractions or decimals

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Write an expression for "the quotient of 9 and c."
frez [133]
Quotient is when something is divided by something. therefore, an equation could be 9/c
3 0
3 years ago
Based on the information given say whether or not △ABC∼△FED. Explain your reasoning.
GalinKa [24]

Answer:

Yes, △ABC ∼ △FED by AA postulate.

Step-by-step explanation:

Given:

Two triangles ABC and FED.

m∠A = m∠B

m∠C = m∠A + 30°

m∠E = m∠F = x

m∠D = 2x-20°.

Now, let m∠A = m∠B = y

So, m∠C = m∠A + 30° = y+30

Now, sum of all interior angles of a triangle is 180°. Therefore,

m∠A + m∠B +  m∠C = 180

y+y+y+30=180\\3y=180-30\\3y=150\\y=\frac{150}{3}=50

Therefore, m∠A = 50°, m∠B = 50° and m∠C =  m∠A + 30° = 50 + 30 = 80°.

Now, consider triangle FED,

m∠D+ m∠E + m∠F = 180

2x-20+x+x=180\\4x=180+20\\4x=200\\x=\frac{200}{4}=50

Therefore,  m∠F = 50°  

m∠E = 50° and  

m∠D =  2x-20=2(50)-20=100-20=80\°

So, both the triangles have congruent corresponding angle measures.

m∠A = m∠F = 50°

m∠B = m∠E = 50°

m∠C = m∠D = 80°

Therefore, the two triangles are similar by AA postulate.

5 0
3 years ago
Question 2 (5 points)
puteri [66]

Answer:

12.5

Step-by-step explanation:

3 0
3 years ago
I need help please I don’t understand stand
vovikov84 [41]

Answer:

c

Step-by-step explanation:

all you gotta do is move the figure up 3 squares, and to the right 3 squares, the way I do this is one point at a time

8 0
3 years ago
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A metalworker has a metal alloy that is ​25% copper and another alloy that is ​70% copper. How many kilograms of each alloy shou
Crank

Answer:

The metal worker should use 10 kgs of 25% copper alloy and 40kgs  of 70% copper alloy to make it

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
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