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Varvara68 [4.7K]
2 years ago
13

Evaluate (3x+8) - (2x+7) when x=3.11418​

Mathematics
2 answers:
Gennadij [26K]2 years ago
8 0

Answer:

=(3×3.11418+8)-(2×3.11418+7)

=(9.34254+8)-(6.22836+7)

=17.34254-13.22836

=4.05894

olga55 [171]2 years ago
3 0

  • Make me as BRAINLIEST plz

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A car rental agency charges $120 per week plus $.12 per mile driven. How many miles did you drive if the total charge is $162?
777dan777 [17]
\boxed{y=120+0.12x}\\
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y=162\\
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120+0.12x=162\\
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0.12x=162-120\\
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0.12x=42\\
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x=\frac{42}{0.12}\\
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7 0
3 years ago
Find the perimeter of triangles are 3.6, 5.7,4.5c
garri49 [273]

Answer:

13.8 cm

Step-by-step explanation:

the sides of the triangle measure 3.6, 5.7,4.5cm?

So, we have

perimeter is 3.6 + 5.7 + 4.5

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3 0
2 years ago
Todd wants to buy a new video game for $43.31. He has $55.50. The sales tax is 8.5% of the total purchase. Does Todd have enough
sammy [17]

Answer:

  yes

Step-by-step explanation:

We can estimate* that the total price including tax of the game will be less than ...

  $43.31 +10% of 43.31 = $43.31 +4.33 = $47.61

Todd easily has enough to pay for the game, including tax.

_____

You can work this more exactly a couple of ways.

  1. Price + tax = 1.085×$43.31 = $46.99 . . . less than Todd's budget

  2. Most Todd can afford: $55.50/1.085 = $51.15 . . . more than the game price

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* For estimating purposes, we like to use numbers that are easy to compute with. 10% is one such number, as it only requires moving the decimal point.

7 0
3 years ago
PLEASE HELP ME<br> MATH IS HARD
nata0808 [166]

Answer:

C

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3 0
3 years ago
Read 2 more answers
If mark got 6 questions out of 40 incorrect what percent of the questions did he get correct?
kap26 [50]
So if 6 out of 40 are incorrect, 40-6= 36 must be correct.
In order to gain percentage you do proportions.
36/40 = x/100.
Multiply 36 times 100 then divide by 40, which is 90.
The answer is 90%.
90% of the questions he got were correct.
7 0
3 years ago
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