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Kay [80]
3 years ago
10

Use benchmark fractions and estimation to solve this problem: 1/5 + 4/5

Mathematics
1 answer:
aniked [119]3 years ago
7 0

Answer:

The answer is 1

Step-by-step explanation:

1/5 + 4/5 = 5/5

5/5 = 1

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She has 12 marbles because 14x3=12
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i need help with number 2 on left side i dont need to find out what x is i need to figure out what degrees each corner is to equ
Aloiza [94]
So what is the question
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Question 7
Anna35 [415]

Answer:

about 9 pounds, 7 ounces

Step-by-step explanation:

5 ounces per week

for 4 weeks

= 5 x 4 = 20 ounces gained thought these 4 weeks

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7 0
3 years ago
Find the exact value of cot 330° in simplest form with a rational denominator.
Hoochie [10]

Answer:

\cot 330^{\circ} = -\sqrt{3}

Step-by-step explanation:

The cotangent function can be rewritten by trigonometric relations, that is:

\cot 330^{\circ} = \frac{1}{\tan 330^{\circ}} = \frac{\cos 330^{\circ}}{\sin 330^{\circ}} (1)

By taking approach the periodicity properties of the cosine and sine function (both functions have a period of 360°), we use the following equivalencies:

\sin 330^{\circ} = \sin (-30^{\circ}) = -\sin 30^{\circ} (2)

\cos 330^{\circ} = \cos (-30^{\circ}) = \cos 30^{\circ} (3)

By (2) and (3) in (1), we have following expression:

\cot 330^{\circ} = -\frac{\cos 30^{\circ}}{\sin 30^{\circ}}

If we know that \sin 30^{\circ} = \frac{1}{2} and \cos 30^{\circ} = \frac{\sqrt{3}}{2}, then the result of the trigonometric expression is:

\cot 330^{\circ} = -\frac{\frac{\sqrt{3}}{2} }{\frac{1}{2} }

\cot 330^{\circ} = -\sqrt{3}

6 0
3 years ago
If a translation take triangle CAT to C’A’T’, what is A’T’?
Nonamiya [84]

Answer:

Option (1)

Step-by-step explanation:

If a translation takes the triangle CAT to triangle C'A'T', transformation will be the rigid transformation or Isometry.

By the definition of rigid transformation, shape and size of the image and preimage remains the same.

Therefore, length of the sides of ΔC'A'T' will remain same as ΔCAT after the translation.

Option (1) √10 will be the answer.

3 0
3 years ago
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