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madam [21]
3 years ago
12

The computer lab is replacing the broken computers with 13 wireless touchscreen devices. About what percent of the lab is wirele

ss devices?
Mathematics
1 answer:
Alborosie3 years ago
8 0
How many computers where there in the first place? cool we know how many were replaced but how many were there in the first place?
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Devon wants to write an equation for a line that passes through 2 of the data points he has collected. The points are (8, 5) and
melamori03 [73]
Use slope formula to find slope <span><span><span>−9−5</span><span>−/12−8</span></span>=<span><span>−14/</span><span>−20</span></span>=<span>7/10</span></span> 7/10 = m = slope  
y= mx + b
y= (7/10)x + b
(8,5)
(5) = (7/10)(8) + b
b = -3/5

So.... <span>y=(<span>7/10)</span>x −<span>35

</span></span> multiply by 10

<span>10y=7x−6</span><span> --> -7x + 10y = -6
 --> 7x - 10y = 6
 So, if 7x - 10y = 3 a good model?</span>
6 0
3 years ago
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Sara found 58 seashells on the beach,she gave Dan some of her seashells.She has 13 seashells left.How many seashells did she giv
Salsk061 [2.6K]
58-13 that she has left = 45
She gave 45 to Dan
5 0
3 years ago
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paleontologist have put together bones to make a T-Rex skull that has a mass of 600 pounds. They just found a new tooth fossil t
Ulleksa [173]
16 ounces = 1 pound
meaning 2.5 pounds is added to the skull, 602.5 pounds.
6 0
3 years ago
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#3 The sales tax on a $20 shirt was 9%.
d1i1m1o1n [39]

Answer:

$1.80

Step-by-step explanation:

20 x 0.09 = 1.8

8 0
2 years ago
4. Mr. Downey used the function f(x) = -3x2 + 12x to model the flight of a glider. In Mr. Downey's
tankabanditka [31]

Answer: 120 seconds

Step-by-step explanation: In order to find the maximum value of a function, you can take the derivative of the function and equalize the result to 0.

f'(x)=(-3x^2 + 12x)'=-6x+12=0

x=2

When x is 2, the function will reach its maximum value.

f(2)=-3(2)^2 + 12.2 = -12 + 24 = 12

The maximum value (f(x)) is equal to 12 and the time passed is 2 minutes which is equal to 120 seconds.

6 0
3 years ago
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