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mrs_skeptik [129]
3 years ago
5

Anyone know the answer to this?

Mathematics
1 answer:
nydimaria [60]3 years ago
8 0

Answer:

-3 plus/minus square root 17 over 4

Step-by-step explanation:

2x squared = -3x + 1 is the same as 2x squared + 3x -1

a=2 b=3 c=-1

sub those into the formula and you get -3 plus/minus square root of 9 + 8 over 2×2

and then you simplify

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Esteban is shopping for a bookshelf. He has 58 non-fiction books and 145 fiction books. He wants each shelf to have the same num
emmasim [6.3K]

Answer:

7

Step-by-step explanation:

Criteria:

• same number of books on each shelf

 ⇒find a number that divides 58 and 145

• greatest number of books on each shelf

 ⇒find the greatest number that divides 58 and 145

Find the GCF of 58 and 145.

58 = 2 ⋅ 29

145 = 5 ⋅ 29The GCF of 58 and 145 is 29.

Each shelf will contain 29 books.

There are 203 total books (because 58 + 145 = 203).

Divide 203 by 29 to find the number of shelves there should be.

203 / 29 = 7

Therefore, there will be 7 shelves.

5 0
2 years ago
If y=1/2 when x=2, find y when x=3, given that y varies directly with x
Lelu [443]
\bf \qquad \qquad \textit{direct proportional variation}\\\\
\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad  y=kx\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad  variation
\end{array}\\\\
-------------------------------\\\\
\textit{we also know that }
\begin{cases}
y=\frac{1}{2}\\
x=2
\end{cases}\implies \cfrac{1}{2}=k2\implies \cfrac{1}{4}=k
\\\\\\
\boxed{y=\cfrac{1}{4}x}
\\\\\\
\textit{when x=3, what is \underline{y}?}\qquad y=\cfrac{1}{4}\cdot 3
4 0
3 years ago
I need help please.
jeka57 [31]

We are trying to represent the change in position of a bird flying down 7 ft to the ground.

Often, for the y axis- up is positive and down is negative.

Change in position is displacement- how far it was from the starting point

( different from distance which is how far is traveled

ex. doubling back would have distance they traveled some distance while the displacement is 0 because they are back to where they started).

The bird is going down 7 ft from where it originally was, which can be represented by

Bird's displacement = -7 ft

5 0
3 years ago
Determine the standard form of the equation of the line that passes through (6, – 9) and (-8, 6).
muminat

Answer:

15x + 14y = -18

Step-by-step explanation:

slope = (6 - -9)/(-8 - 6) = 15/-14

y = mx + b

6 = -15/14(-8) + b

6 = 60/7 + b

b = -18/7

y = -15/14x - 18/7

15/14x + y = -18/7, multiply everything by 14

15x + 14y = -18

4 0
3 years ago
What is 3,480,000,000 in scientific notation
REY [17]
3.48 x 10^9

I hope this is right.
6 0
3 years ago
Read 2 more answers
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