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Lisa [10]
3 years ago
13

Write an equation to find the number of Mr.night's homeroom if the total number of students is 90

Mathematics
1 answer:
tia_tia [17]3 years ago
5 0
This question is obviosly missing an ending but, I bet you will have to divide.
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Margo can purchase tile at a store for $0.69 per tile and rent a tile saw for $36. At another store she can borrow the tile saw
TEA [102]

Answer:

<h3>30 tiles need to buy for same cost in both store.</h3>

Step-by-step explanation:

Let x be the number of tiles to buy for same cost in both store.

18+0.69 · n = 1.29 · n,

1.29n -0.69n =18 or

0.6n =18

n =18/0.6=30

Therefore, 30 tiles need to buy for same cost in both store.[Ans]

7 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B3%7D%7B2%7D%20x%20-%20%20%5Cfrac%7B3%7D%7B4%7D%20x%20%3D%206" id="TexFormula1" ti
MAVERICK [17]

\frac{3}{2}x-\frac{3}{4}x=6

\frac{3}{2}x*4-\frac{3}{4}x*4=6*4

6x-3x=24

3x=24

\frac{3x}{3}=\frac{24}{3}

x=8

"x=8 is correct answer."

Hope this helps!

Thanks!

-Charlie

3 0
4 years ago
If the discriminant of an equation is zero, which of the following is true of the equation?​
White raven [17]

\sf Your \: question \: is \: incomplete. \:

______________________

\sf \: I \: believe \: this \: is \: the \: answer \: you \: wanted ⟹

\sf If  \: the  \: discriminant  \: of \:  an \:  equation \:  is  \: zero, \: then \\  \sf \: the \: equation \: will \: have \:\underline{ 1 \: real \: solution \: with \: real \: and \: equal \: roots}.

\boxed{ \sf{Explanation}}

\sf If \: discriminant \: of \: quadratic \: equation  \: ax^{2} + bx + c \: \\ \sf is \: b^{2} - 4ac = 0 \: then \: it \: will \: have \\ \sf↦\underline{1 \: real \: solution \: with \: real \: and \: equal \: roots.}

7 0
3 years ago
Read 2 more answers
Use the substitution method to solve the system of equations. y = –4x 8x – y = 6 A.(2, –8)B. (1, –4) C.1/2-4 D.1/2-2
satela [25.4K]

y= -4x and 8x-y=6

what you do is switch the negative y to the other side and move the positive 6 to the other side thus making y=8x-6.

I don't get what those numbers are on the question but the way you solve it is by combining them and putting one y into the other

8x-6=-4x   12x=6   6/12=x   .5=x

then you plug in x to find y in whichever equation:

-4x=y   -4(.5)=y   -2=y

so the final answer would be (.5,-2)

6 0
3 years ago
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a chicken salad recipe calls for 1/8 pound of chicken per serving. How many pounds of chicken are needed to make 8 1/2 servings?
otez555 [7]
(1/8)(8 1/2)=17/16. or 1 1/16 pounds

7 0
3 years ago
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