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Ulleksa [173]
3 years ago
6

Geometry help asap please

Mathematics
1 answer:
NemiM [27]3 years ago
5 0

Answer:

99 degrees

Step-by-step explanation:

81+a=180, so

180-81=99

a=99

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What’s the slope ? PLS NEED HELP!
yawa3891 [41]

Answer:

m = -1/2

Step-by-step explanation:

m = slope = rise/run

rise +1

run -2

rise/run = 1/-2

=

-1/2

7 0
3 years ago
Please help. I need to know the strategy, the correct work, and to identify the error.
zysi [14]

Answer:

See below

Step-by-step explanation:

13x + 5 + 17x - 4.5 + x

NOTE: You can only add/subtract LIKE terms . Here we have  variable terms in x  (13x , 17x and x) and 2 constants ( 5 and 4.5).

Sarah's next line is

18x + 17x - 4.5 + x

This is incorrect . It looks like she  added 13x + 5 and got 18x!! Which is of course wrong because they are NOT LIKE terms. 5 is a constant and 13x is a variable term in x.

The third line is correct:-

35x - 4.5 + x.

She has added the 2 variables 17x and 18x.

Fourth line  is  30.5x + x. She's at it again - Trying to subtract 4.5 from 35x .

Last line 31.5x

She has added  the 2 terms in x correctly, but the final answer is wrong of course due to the earlier errors.


7 0
3 years ago
Pls help<br> will mark as brainliest<br> thank you
s344n2d4d5 [400]

Answer:

5 : 4

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
I’m doing literal equations and I need help on this question X + 2/ y - 1 = 2
Tanzania [10]

Answer:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : 

                     x+2/y-1-(2)=0 

STEP1:

2 Simplify — y

Equation at the end of step1:

2 ((x + —) - 1) - 2 = 0 y

STEP2:Rewriting the whole as an Equivalent Fraction

 2.1   Adding a fraction to a whole 

Rewrite the whole as a fraction using  y  as the denominator :

x x • y x = — = ————— 1 y

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole 

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding fractions that have a common denominator :

 2.2       Adding up the two equivalent fractions 

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

x • y + 2 xy + 2 ————————— = —————— y y

Equation at the end of step2:

(xy + 2) (———————— - 1) - 2 = 0 y

STEP3:

Rewriting the whole as an Equivalent Fraction :

 3.1   Subtracting a whole from a fraction 

Rewrite the whole as a fraction using  y  as the denominator :

1 1 • y 1 = — = ————— 1 y

Adding fractions that have a common denominator :

 3.2       Adding up the two equivalent fractions 

(xy+2) - (y) xy - y + 2 ———————————— = —————————— y y

Equation at the end of step3:

(xy - y + 2) ———————————— - 2 = 0 y

STEP4:

Rewriting the whole as an Equivalent Fraction :

 4.1   Subtracting a whole from a fraction 

Rewrite the whole as a fraction using  y  as the denominator :

2 2 • y 2 = — = ————— 1 y

Adding fractions that have a common denominator :

 4.2       Adding up the two equivalent fractions 

(xy-y+2) - (2 • y) xy - 3y + 2 —————————————————— = ——————————— y y

Equation at the end of step4:

xy - 3y + 2 ——————————— = 0 y

STEP5:

When a fraction equals zero :

 5.1    When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, Tiger multiplys both sides of the equation by the denominator.

Here's how:

xy-3y+2 ——————— • y = 0 • y y

Now, on the left hand side, the  y  cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

   xy-3y+2  = 0

Solving a Single Variable Equation:

 5.2     Solve   xy-3y+2  = 0 

In this type of equations, having more than one variable (unknown), you have to specify for which variable you want the equation solved.

3 0
2 years ago
What is the value of x?<br> 2<br> 3<br> 6<br> 7
nlexa [21]
Hello! Im Sezina

The answer is 2
5 0
2 years ago
Read 2 more answers
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