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Mumz [18]
3 years ago
13

Please help if you can! I'll mark brainiest if you're right;; Thank you in advance :D

Mathematics
1 answer:
Stels [109]3 years ago
5 0

Answer:

[83, 100]

Step-by-step explanation:

Lowest score to get a B is 80

Total 4 tests,  to get at least a B  :  80 x 4 = 320

Total 3 test scores = 81 + 62 + 94 = 237

So the fourth test to get at least a B: 320 -237 = 83

Answer [83, 100]

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Consider the equation |1/4+12|=x/2.Without calculating, how do you know x=-16 is an extraneous solution?
telo118 [61]

Without calculating, you can immediately see the absolute value sign, which implies that the final result (x) should be positive, not negative.  

5 0
3 years ago
17/22 as a decimal rounded to the nearest hundredth.
wariber [46]

Answer:

0.77

Step-by-step explanation:

17/22=0.772727273

Rounded to the nearest hundredth that would be

0.77

3 0
3 years ago
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The cost of a parking permit consists of a one-time administration fee plus a monthly fee. a permit purchased for 12 months cost
julsineya [31]

let

x--------> the monthly fee

y--------> the administration fee

we know that

660=y+12x --------> equation 1

810=y+15x --------> equation 2

Multiply by -1 equation 1

-660=-y-12x ------> equation 3

Adds equation 2 and equation 3

810=y+15x\\-660=-y-12x\\---------\\   810-660=15x-12x\\ 3x=150\\ x=50\ dollars

Find the value of y

660=y+12x\\ 660=y+12*50\\ y=660-600\\ y=60\ dollars

therefore

the answer is

the administration fee is equal to 60\ dollars

4 0
3 years ago
Read 2 more answers
I need help on that question ​
Anika [276]

Answer:

the required answer is

80 \sqrt{3}

Step-by-step explanation:

here's the solution : -

=》

4 \sqrt{5}  \times 4 \sqrt{15}

=》

4 \sqrt{5}  \times 4 \sqrt{5}  \times  \sqrt{3}

=》

4 \times 4 \times 5 \times  \sqrt{3}

=》

80 \sqrt{3}

3 0
3 years ago
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Straight angle always has 180 degrees this is correct?
sveticcg [70]

Answer:

You are correct

Step-by-step explanation:Nice job have a nice day!!!

8 0
3 years ago
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