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Andreyy89
3 years ago
7

John must have at least 289 test points to pass his math class. He already has test scores of 72, 78, and 70. Which inequality w

ill tell him at least how many more points he needs to pass the class?
Mathematics
2 answers:
netineya [11]3 years ago
3 0
<span> 72 + 78 + 70 + x is less than or equal to 289</span>
frutty [35]3 years ago
3 0
72 + 78 + 70 + x is greater than of equal to 289
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Shelly bought 5 pounds of bananas for $1.10. How much were the bananas per pound?
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Kevin and Randy Muise have a jar containing 92 coins, all of which are either quarters or nickels. The total value of the coins
Artemon [7]
<span>Let n = the number of nickles
Let q = the number of quarters
Then for your problem we have
(1) n + q = 43 and
(2) 5*n + 25*q = 100*6.95 (always work in cents to avoid decimal numbers) or
(3) 5*n + 25*q = 695
Now substitute n of (1) into (3) and get
(4) 5*(43 - q) + 25*q = 695 or
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(7) 20*q = 480 or
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Then using (1) we get
(9) n + 24 = 43 or
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Let's check these values.
Is (.05*19 + .25*24 = 6.95)?
Is (.95 + 6.00 = 6.95)?
Is (6.95 = 6.95)? Yes
Answer: Kevin and Randy have 19 nickles and 24 quarters in the jar.</span>
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2 years ago
A display that uses bars to show data is an​
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3 years ago
Which is the graph of the following equation?
lesantik [10]

Given equation is

\frac{(x-5)^2}{16} - \frac{(y-2)^2}{9}=1

The given equation is in the form of

\frac{(x-h)^2}{a^2} - \frac{(y-k)^2}{b^2}=1

a^2= 16  , so a=4

b^2 = 9 so b= 4

The value of 'a' is greater than the value of 'b'

So it is a Horizontal hyperbola

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Here center is (h,k)  

h= 5 and k =2 from the given equation

So center is (5,2)

Now we find vertices

Vertices are (h+a,k)  and (h-a,k)

We know h=5, k=2  and a=4

So vertices are (9,2)  and (1,2)

Second graph having same vertices and center

The correct graph is attached below


7 0
3 years ago
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three vertices of a rectangle are located at (5,3), (7,1), and (1,-1). what are the coordinates of the fourth vertex?
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I first plotted the three points and from from their position it was clear which pairs to join to start a rectangle.

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