I need help with my math!!!!!

Mathematics

2 answers:

VMariaS [17]3 years ago

8 0

Answer: its either b or c

Margarita [4]3 years ago

7 0

I am pretty sure it’s b!!

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Question 7: How rates and ratios related? - we don’t do number 6. In my class we’re learning how to write rates as unit rates. I

ycow [4]

Hi, here is the solution.

Ratio: The relationship between the two numbers of the same unit is called the ratio.

Example: The number of boys and girls in your class.

Rate: The rate is the ratio of two measurements that have different units.

Example: Miles per hour, working hours (40 hours per week)

Note: Rate is a special ratio.

Example

Sarah covered the distance of 60 miles in 3 hours. What is the rate per hour?

Rate = 60/3 = 20 miles per hour.

Hope you will understand this.

Thank you :)

6 0

4 years ago

Please help! Asap. Parent in need of explanation of math problem?

kotykmax [81]

The drawing shows that angles BAD and CAD are congruent, which means that the line segment AD bisects the angle BAC. By the angle bisector theorem,

$\dfrac{CD}{BD}=\dfrac{AC}{AB}$

But AB and AC are also shown to be congruent, so the right hand side reduces to 1, and we have $CD=BD$ , which means CD and BD are also congruent.

AD is congruent to itself and happens to be a part of two triangles, ABD and ACD.

So by the side-side-side postulate, the triangles ABD and ACD are congruent, which means corresponding parts (sides and angles) are congruent to each other. And because triangles ABD and ACD are congruent, the "total" triangle ABC is isosceles, and AD must be perpendicular to BC. This last observation means that $x=90$ .