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3 years ago

This is for a test review, i’ve tried ever way and still can’t seem to get the correct answer. help!

Mathematics

2 answers:

Shkiper50 [21]3 years ago

5 0

Answer:

x=12

Step-by-step explanation:

All angles in a triangle always equal 180 degrees

1. Add all of your angles and set them equal to 180

3x+7+74+63=180

2. Simplify

3x+144=180

3. Combine Like-Terms (Subtract 144 from both sides)

3x=36

4. Simplify

x=12

8090 [49]3 years ago

4 0

Answer:

x=12

Step-by-step explanation:

To find the missing angle of this scalene triangle you must make sure all three angles add up to 180°.

Since you're already provided with 63° and 74°, you are able to get the third angle:

First, add 63+74, which gets you 137.

Next, subtract 137 from 180. (180-137=43).

So, the missing angle is 43.

Now, to solve for x, here's a reference equation:

3x+7=43.

Subtract 7 from both sides to get:

3x=36.

Then, divide both sides by 3:

3x/3=x,36/3=12

So, you end up with:

x=12.

Hope this helps!

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If f ( x ) is a linear function, f ( − 1 ) = − 4 , and f ( 2 ) = 1 , find an equation for f ( x ) in slope-intercept form.

Doss [256]

Linear functions are given in the form:
y = mx + n
m slope
n y-intercept

Inserting the given values:
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6 0

4 years ago

It took 48 minutes to drive downtown. An app estimated it would be less than that. If the error was 20%, what was the app’s esti

IgorLugansk [536]

Answer:

The estimated taken to drive downtown using App is 38.4 minutes

Step-by-step explanation:

Given as :

The initial time taken to drive downtown = i = 48 minutes

The percentage error of time = r = 20%

Let The estimated time using app = t min

Let the time = 1 min

Now, according to question

The estimated time using app = The initial time taken to drive downtown × $(1-\dfrac{\textrm rate}{100})^{\textrm time}$

Or, t minutes = i minutes × $(1-\dfrac{\textrm r}{100})^{\textrm 1}$

Or, t = 48 minutes × $(1-\dfrac{\textrm 20}{100})^{\textrm 1}$

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Or, t = 48 minutes × $\dfrac{80}{100}$

∴ t = $\dfrac{48\times 80}{100}$ minutes

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Or, The estimated time using app = t = 38.4 min

Hence, The estimated taken to drive downtown using App is 38.4 minutes Answer

5 0

3 years ago

NO LINKS!!! PLS HELP ME IM TRYING TO GRADUATE PLSSS !!! Find the midpoint of the segment below and enter its coordinates as an

Leto [7]

Answer:

x = 5/2 , y = -7/2

Step-by-step explanation:

r's your solution

=> formula for finding midpoint =.( X1 + X2/)/2 , (Y1+Y2)/2

=> putting the value of in formula

=> x= 4+1/2 , y = -1-6/2

=> x = 5/2 , y = -7/2

hope it helps

3 0

3 years ago

Make up equations for two lines that intersect at (4,1).

telo118 [61]

Answer:

y=1

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hope this helps!

if you graph these equations, they will intersect at (4,1). They look very short because they are vertical and horizontal.

Step-by-step explanation:

4 0

3 years ago

A right triangle has a hypotenuse of 10 mi. and a leg of 6 mi., what is the length of the other leg?

slava [35]

Answer:

8mi

Step-by-step explanation:

Using Pythagoras theorem

Hypotenuse square = opposite square + adjacent square.

Let the other leg be x

10 square = 6 square + x square

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Collect like terms

X square = 100 -36

X square = 64

Find square root of both sides

X = square root of 64

X =8mi

I hope this was helpful, Please mark as brainliest

7 0

3 years ago