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marshall27 [118]
3 years ago
14

Trigonometry:

Mathematics
1 answer:
9966 [12]3 years ago
8 0

Answer:

= 9

Step-by-step explanation:

There are two angles given.

One is 90 and the other is 45.

90+45=135

180-135=45°

This proves that the triangle is isosceles.

This means that two angles are equal, but also two side lengths are the same.

In this triangle, the equal sides are CB and AC.

Therefore, AC is equal to 9.

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David leaves reading at 11 45am. he arrives at cardiff at 1 45pm. david drives at an average speed of 56 miles per hour. work ou
yan [13]

Step-by-step explanation:

speed = distance/time

we know the speed and the time (11:45am to 1:45pm = 2 hours).

distance = speed × time = 56 m/h × 2 h = 112 miles

3 0
2 years ago
Name a pair of vertical angles in the figure.
kramer

Answer:

1 and 3

Step-by-step explanation:

vertical angles are opposite to each other when angles are created by intersecting lines.

3 0
3 years ago
Read 2 more answers
Which number line shows |-3|, |-8| ,| -2| , and |5| ?
Aleks [24]
Well, the absolute value of a number would always be positive, which means the dots on the line is going to be on the right side of 0. In the choices, the only number line that qualifies is C.
4 0
4 years ago
alice fox and basil cat are searching for a treasure they start at the old oak tree in the field of dreams and walk 240 m, each
attashe74 [19]

alice fox's step is 3/5 m and basil cat's step is 4/5m.

note: i will be using 1/5m instead of 20 cm to keep the units consistent

1. Set up table

     | Step Length | # of steps | Distance

A   |    x                 |    240/x     |   240

B   |       x+1/5       |  240/x+1/5 |   240

2. set up equation

240/x  -  100 = 240/x+0.2

3. Multiply the bases to make it:

240x+48 - 100x^2 -20x = 240x

=    100x^2-20x+48=0

4. Use vieta's theorem or quadratic equation to solve for x

x= 3/5, -4/5 but -4/5 doesnt work bc distance can't be negative

5. plug back in

A   |    3/5  

B   |       3/5+1/5

so: alice fox's step is 3/5 m and basil cat's step is 4/5m.

hope this was helpful!!

8 0
3 years ago
Read 2 more answers
3x - y = 7<br> y= 2x +2<br> What’s the answer
ElenaW [278]

Answer:

y=20,x=9

When doing problems like this it is important to always note: whatever you do to one side of the = sign you have to do to the other side.

Step-by-step explanation:

For this problem it helps that they already give you what y equals to so you can plug y in the top equation to figure out what x is. See attachment for step by step process

6 0
3 years ago
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