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2 years ago

What is the sum of all of the prime numbers from 1 to 10

Mathematics

2 answers:

Ann [662]2 years ago

8 0

Answer:

Step-by-step explanation:

2+3+5+7=17 hope this is helpful

arlik [135]2 years ago

5 0

Answer:

1+3+5+7 = 16 is the sum of all prime no. between 1 and 10

Step-by-step explanation:

i really don't know if wrong pls forgive me pls

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Answer the Blanks:

vfiekz [6]

Answer:

1. 90°

2. 90°

3. 40°

4. 45°

5. 45°

Step-by-step explanation:

Given: ΔABC,

CD⊥AB,

m∠A=50°,

m∠ACB=85°

Solution:

1. ∠ADC is a right ange, because CD⊥AB, so

$m\angle ADC=90^{\circ}$

2. ∠CDB is a right ange, because CD⊥AB, so

$m\angle CDB=90^{\circ}$

3. Consider triangle ACD. The sum of the measures of all interior angles is always 180°, so

$m\angle A+m\angle ADC+m\angle ACD=180^{\circ}\\ \\50^{\circ}+90^{\circ}+m\angle ACD=180^{\circ}\\ \\m\angle ACD=180^{\circ}-50^{\circ}-90^{\circ}=40^{\circ}$

4. By Angle Addition Postulate,

$m\angle ACD+m\angle BCD=m\angle ACB\\ \\40^{\circ}+m\angle BCD=85^{\circ}\\ \\m\angle BCD=85^{\circ}-40^{\circ}=45^{\circ}$

5. Consider triangle ABC. The sum of the measures of all interior angles is always 180°, so

$m\angle A+m\angle ACB+m\angle B=180^{\circ}\\ \\50^{\circ}+85^{\circ}+m\angle B=180^{\circ}\\ \\m\angle B=180^{\circ}-50^{\circ}-85^{\circ}=45^{\circ}$

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3 years ago

Which ratio is proportionate to 9/3

Helga [31]

Answer:

3/1

simplify 9/3

3/1 is the answer

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3 years ago

To convert a percent to a fraction, which of the following is not done?

slavikrds [6]

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Answer:

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2 years ago

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Pavlova-9 [17]

Answer:

75%

Step-by-step explanation:

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3 years ago