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3 years ago

What is the value of the expression below? -8+19+8 OO

Mathematics

2 answers:

Sidana [21]3 years ago

7 0

Answer:

The value of the expression is 19

Step-by-step explanation:

Simplify -8+19 to 11.

11+8

maxonik [38]3 years ago

4 0

19
-8+8=0 you left with 19

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The customer who purchased the items for 37.85 started out with 52.02 in his pocket. He decided to use his leftover money to buy

Rudik [331]

Answer:28 bags with 17 cents left over

Step-by-step explanation: First, subtract the amount of 37.85 from what he started out with, 52.02. You should get 14.17.

Then, if we have 14 whole dollars and the bags each cost 50 cents, then we can just multiply 14 by 2, since each dollar equals 50 cents times 2.

EX: $1=50 cents x2. So 14 dollars x2 would be like saying the first amount 50 cents doubled. You should get 28 bags, with 17 cents left over :). Let me know if this makes sense! I really hope this helps you.

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A smartphone costs $120. Sales tax is 5%. What is the total cost, including tax?

miv72 [106K]

Since 100% = $120,

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3 years ago

Find the distance between 2-3i And 9+21i

Goryan [66]

2 - 3i is just another of writing (2, -3) in the cartesian plane, the 2-3i however is using the "imaginary axis" for the imaginary plane, is all however the imaginary axis is simply the equivalent of the y-axis. Likewise 9+21i is just (9,21), so let's just use the distance formula.

$\bf ~~~~~~~~~~~~\textit{distance between 2 points} \\\\ (\stackrel{x_1}{2}~,~\stackrel{y_1}{-3})\qquad (\stackrel{x_2}{9}~,~\stackrel{y_2}{21})\qquad \qquad d = \sqrt{( x_2- x_1)^2 + ( y_2- y_1)^2} \\\\\\ d=\sqrt{[9-2]^2+[21-(-3)]^2}\implies d=\sqrt{(9-2)^2+(21+3)^2} \\\\\\ d=\sqrt{7^2+24^2}\implies d=\sqrt{49+576}\implies d=\sqrt{625}\implies d=25$

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3 years ago

A culture started with 1,000 bacteria. After 3 hours, it grew to 1,100 bacteria. Predict how many bacteria will be present after

ss7ja [257]

The general equation for exponential growth can be written as:
$x_{t} = x_{0} (1+r)^{t}$
where r is the growth rate.
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Therefore
$(1+r)^{3}=1.1$
giving
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The predicted number of bacteria after 17 hours is given by:
$1000(1.0323)^{17}=1716$

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3 years ago

Write each rational number as a terminating decimal. 1. 19/20 2. -1/8 3. 17/5

Dima020 [189]

19/20= 0.95
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HOPE THIS HELPS!

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3 years ago

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