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ra1l [238]
2 years ago
14

Classify COB in the image above as either acute, obtuse, right, or straight angle.

Mathematics
2 answers:
Elis [28]2 years ago
7 0

Answer:

Number 2 obtuse

Step-by-step explanation:

kolbaska11 [484]2 years ago
5 0

Answer:

∠COB is obtuse angle

Explanation:

I attached an image showing how to tell the difference between an acute, obtuse, right, and straight angle.

We can clearly see, just by looking at the image. ∠COB is an obtuse angle

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Counting Cookies: Hannah baked 120 peanut butter chocolate chip cookies. She
mafiozo [28]

Answer:

10:12, 5:24, 9:13+1/3, 3:40, 20:6, 7:17+1/7

Step-by-step explanation:

You simply divide 120 by each of the numbers.

120/10=12, 120/5=24, 120/9=40/3, 120/3=40, 120/20=6, 120/7=12+1/7

8 0
3 years ago
HELP PLEASE 98 points
castortr0y [4]

Answer:

Given: ​ BD ​is an altitude of △ABC .

Prove: sinA/a=sinC/c

Triangle ABC with an altitude BD where D is on side AC. Side AC is also labeled as small b. Side AB is also labeled as small c. Side BC is also labeled as small a. Altitude BD is labeled as small h.

Statement Reason

​ BD is an altitude of △ABC .

Given △ABD ​ and ​ △CBD ​ are right triangles. (Definition of right triangle)

sinA=h/c and sinC=h/a

Cross multiplying, we have

csinA=h and asinC=h

(If a=b and a=c, then b=c)

csinA=asinC

csinA/ac=asinC/ac (Division Property of Equality)

sinA/a=sinC/c

This rule is known as the Sine Rule.

7 0
3 years ago
Nine more than four times a number is the same as one less than twice the number find the number
lianna [129]
The answer is -5. -5 times 4 is -20, plus 9 is -11. -5 times 2 is -10, -1 is -11. -5 works.
5 0
3 years ago
14 What value of x makes this equation true?<br> 12x - 15 = 6 - 3x<br><br> Plsss help me and hurry
rodikova [14]

Answer:

1.4

Step-by-step explanation:

12x+3x=15+6

15x=21

X=21/15

X=7/5 or 1.4

5 0
2 years ago
18
Cloud [144]

Answer: 100

5

Step-by-step explanation:

a) The mean of a normal distribution is also the median. Half the population will have values above the mean. Half of 200 is 100, so ...

... 100 students will have grades above 70%.

b) 84% is 14% above the mean. Each 7% is 1 standard deviation, so 14% is 2 standard deviations above the mean. The empirical rule tells you 95% of the population is within 2 standard deviations of the mean, so about 5% of students (10 students) got grades higher than 84% or lower than 56%. The normal distribution is symmetrical, so we expect about 5 students in each range.

... about 5 students will have grades above 84%.

3 0
3 years ago
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