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solong [7]
3 years ago
7

Plz help me with this math ​

Mathematics
1 answer:
erma4kov [3.2K]3 years ago
5 0

Answer:

$68.13

Step-by-step explanation:

$7.29x3=$21.87

$5x2=$10.00

$21.87 + $10.00=$31.87

$100.00-$31.87=$68.13

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A pencil costs $0.50. Write a variable expression for the cost of x pencils.
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The correct answer is C
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3 years ago
If your car gets 35 miles per​ gallon, how much does it cost to drive 400 miles when gasoline costs ​$3.30 per​ gallon?
Arlecino [84]
To solve his equation start by finding how many gallons of gas you need to purchase for the total trip.
Set up an expression that divides the total distance of the trip by the miles received per gallon.
This gives you:
400 / 35

Divide to get 11.43 gallons.

To find the cost of this, multiply the total number of gallons needed to cover the trip by the cost of each gallon.
Set this up in another expression.
This results in:
11.43 x 3.30

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I hope this is correct and helps you! :)
7 0
3 years ago
John solved a division problem by subtracting and keeping track as shown. Identify the problem he solved.​
shtirl [24]

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7 0
2 years ago
Read 2 more answers
Determine the equation of the line that passes through the given points. (If you have a graphing calculator, you can use the tab
siniylev [52]

Answer:

y = -2x

Step-by-step explanation:

It passes through -5, 10 and 5, -10

gradient = Δy/Δx

gradient = -10 - 10 / 5 -- 5

gradient = -20 / 10

gradient = -2

let's use -5, 10 for y = mx + b

10 = -2(-5) + b

10 = 10 + b

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6 0
2 years ago
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Verizon [17]

Answer:

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Step-by-step explanation:

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Now, here solving the given equation by SPLITTING THE MIDDLE TERM:

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⇒ either (2x+1) = 0, or ( 2x + 1) = 0

⇒ x = -1/2 or x  = -1/2

Here, in both the cases, the value of x is equal i.e x  =  -1/2

So, the given function has TWO IDENTICAL ROOTS.

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4 0
3 years ago
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