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Irina-Kira [14]
2 years ago
13

The difference of a number divided by 2 and six is the same as -12

Mathematics
1 answer:
Dahasolnce [82]2 years ago
3 0
40 djdjfjxj d didjfjjxjd. Didjdjjxjdjdkdjd didjdjjdjd
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Your friend grace needs help to find the values of x,y and z in the figure below
kow [346]

Answers:

x = 57

y = 86

z = 37

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

Work Shown:

x+123 = 180 .... since x and 123 form a straight line

x = 180-123

x = 57

y = 86 since the y and 86 angles are vertical angles

-------

For any triangle, the three angles always add to 180. So,

x+y+z = 180

57+86+z = 180

143+z = 180

z = 180-143

z = 37

As a check,

x+y+z = 57+86+37 = 180

which confirms the value of z

5 0
3 years ago
The coach pays $72 for 18 hamburgers. What is the cost per hamburger? What math concept do you use to solve the problem?
Talja [164]

Answer:4

Step-by-step explanation:

you divide 72 by 18.

5 0
3 years ago
Read 2 more answers
Is -18x - 7 equal to -6(3x - 7)?
adoni [48]

Answer:

No

Step-by-step explanation:

-18-7 is not equal to -6(3x-8) beacuse

-6(3x-8)= -18x+42

its obivous that the two values are not same

5 0
2 years ago
Read 2 more answers
What is the simplified expression for 5ab+9ab-ab
Ulleksa [173]
The simplified expression is 13ab
3 0
3 years ago
2k^2-5k-18=0 what is both of the values of k? plz help!!! 15 pts!!!
ddd [48]
To factor quadratic equations of the form ax^2+bx+c=y, you must find two values, j and k, which satisfy two conditions.

jk=ac and j+k=b

The you replace the single linear term bx with jx and kx. Finally then you factor the first pair of terms and the second pair of terms. In this problem...

2k^2-5k-18=0

2k^2+4k-9k-18=0

2k(k+2)-9(k+2)=0

(2k-9)(k+2)=0

so k=-2 and 9/2

k=(-2, 4.5)
5 0
3 years ago
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