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kkurt [141]
3 years ago
13

Sonya has a collection of gold and silver coins.

Mathematics
1 answer:
faltersainse [42]3 years ago
3 0

Answer:

10.5

Step-by-step explanation:

65% of 70 is 45.5

So gold is 45.5 and silver is 54.5

so but45.5 + 54.5 = 100% but divide by 2

which is 50% but now we find 10% and 5%

10% = 7

5% = 3.5

now add 7 and 3.5 together

7+3.5 = 10.5

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Using the image, determine the length of each arc.<br> m RC=<br> m CBR =
Montano1993 [528]

<u>Given</u>:

Given that the measure of ∠CDR = 85°

We need to determine the measure of \widehat{RC} and \widehat{CBR}

<u>Measure of arc RC:</u>

Since, we know that if a central angle is formed by two radii of the circle then the central angle is equal to the intercepted arc.

Thus, we have;

m\angle CDR = m \widehat{RC}

Substituting the values, we get;

85^{\circ} = m \widehat{RC}

Thus, the measure of \widehat{RC} is 85°

<u>Measure of arc CBR:</u>

We know that 360° forms a full circle and to determine the measure of arc CBR, let us subtract the values 360 and 85.

Thus, we have;

m\widehat{CBR}=360^{\circ}-m \widehat{RC}

Substituting the values, we have;

m\widehat{CBR}=360^{\circ}-85^{\circ}

m\widehat{CBR}=275^{\circ}

Thus, the measure of \widehat{CBR} is 275°

6 0
3 years ago
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jek_recluse [69]

Answer:

The vertex angle is 180-(60+75)=45.

k/sin75=900/sin45 so k=900sin75/sin45=1229km approx.

Step-by-step explanation:

6 0
3 years ago
The value of a house is increasing by ​$2500 per year. If it is worth ​$190,000 ​today, what will it be worth in four ​years?
sineoko [7]

Answer:

5000

Step-by-step explanation:

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3 0
3 years ago
What is the graph of the inequality?
Volgvan

Answer::C. d < 2

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

6 0
3 years ago
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