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slamgirl [31]
3 years ago
14

Christine had 178 dollars to begin with. She just spent B dollars. Using b, write an expression for the number of dollars she ha

s left
Mathematics
1 answer:
nexus9112 [7]3 years ago
5 0
178-b=n n being number of dollars
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Someone PLEASEEEE HELPPPP
igomit [66]

Answer:

x = 18√3

Step-by-step explanation:

From the picture attached,

In a right triangle,

Measure of one angle = 30°

Measure of adjacent side of the angle = 9 units

We have to find the measure of Hypotenuse from the given properties.

By cosine rule,

cos(30°) = \frac{\text{Adjacent side}}{\text{Hypotenuse}}

\frac{\sqrt{3}}{2} =\frac{9}{x}

x=18\sqrt{3}

Therefore, measure of Hypotenuse is 18√3 units.

3 0
3 years ago
Suppose the scale factor you will use to enlarge the map is 5:1. What is the approximate area of the park in your enlarged drawi
Sunny_sXe [5.5K]

Answer:

image ?

Step-by-step explanation:

4 0
3 years ago
I feel like This isn't right. Can some please correct it? I'll give brainiest to best explanation. Thanks
Mademuasel [1]
Answer: x = 10

========================================================

Explanation:

Check out the attached image. I've basically redrawn your image and added point D. This point is the intersection of the angle bisector and segment BC. The red angle (DAC) and the green angle (DAB) are congruent.

The reason why I added point D is to help with the angle bisector theorem. This theorem states that if we have a triangle ABC, and angle A is bisected (as the diagram shows), then we can set up the following proportion
AB/BD = AC/CD

Note how AB and BD are on the left side of point D, and they form the ratio AB/BD. Similarly, AC and CD are to the right of point D so they form the ratio AC/CD. These two ratios are equal by the angle bisector theorem.

---------------------

Let's plug in the given info and then isolate x
AB/BD = AC/CD
8/(x+4) = 12/(2x+1)
8(2x+1) = 12(x+4) ... cross multiply
8(2x)+8(1) = 12(x)+12(4) ... distribute
16x+8 = 12x+48
16x+8-8 = 12x+48-8 ... subtract 8 from both sides
16x = 12x+40
16x-12x = 12x+40-12x ... subtract 12x from both sides
4x = 40
4x/4 = 40/4 ... divide both sides by 4
x = 10

---------------------

Check:
8/(x+4) = 12/(2x+1)
8/(10+4) = 12/(2*10+1) ... replace every x with 10
8/(10+4) = 12/(20+1)
8/14 = 12/21
4/7 = 4/7
Answer is confirmed


7 0
4 years ago
30 points.Help pleasee with answer.Dont know how this works​
alex41 [277]

Answer:

3

Step-by-step explanation:

23=5x-4

Add 4 to both sides

27=9x

Divide 9 To both sides

27/9 9x/9

x=3

4 0
3 years ago
Read 2 more answers
What is the result of subtracting the second equation
mojhsa [17]
I'm pretty sure the answer would be
1/5 or .2
(that's the same answer in decimal and fraction form)
7 0
3 years ago
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