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mr_godi [17]
3 years ago
13

Your test scores are 75, 93, 90, 82 and 85. What is the lowest score you can obtain on the next test to achieve an average of at

least 86? (Explain)
Mathematics
1 answer:
Korvikt [17]3 years ago
5 0
You’ll need a total of 86x6= or 516 total points to meet your average of at least 86. Now subtract out your current scores: 516- 75-93-90-82-85 = 91. You’ll need 91 to meet the 516 total requirement.
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C) The phone case you want to buy is marked down 30%, and you have a 25% off
Nimfa-mama [501]

Answer: Yes, you can find the original price of the phone case. The phone case was $560

Step-by-step explanation:

42.00 divided by 25% is $168

$168 divided by 30% is $560

5 0
3 years ago
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maksim [4K]

Answer:

two of the sides are 21 m long and one of the sides is 28 m long

8 0
3 years ago
State the value of the discriminant for <br><br>y = <img src="https://tex.z-dn.net/?f=5x%5E2%2B9x-3" id="TexFormula1" title="5x^
Nostrana [21]

Answer:

141, meaning that there will be two real solutions

Step-by-step explanation:

The discriminant of a quadratic is b^2-4ac, which in this case is:

9^2-4(5)(-3)=81+60=141

Since the discriminant is positive and not zero, there will be two real solutions to this equation. This is because when the discriminant is negative, and you take the square root of it, you get a negative number. If you take the square root of 0, you get 0, which means that there will only be one solution to the equation.

Hope this helps!

3 0
3 years ago
Write the equation of the line that passes through the points (-1, 10) and (5, 2)
sdas [7]

Answer:

y=-\frac{4}{3}x +\frac{26}{3}

Step-by-step explanation:

1) if the point A has coordinates (-1;10) and the point B - (5;2), then it is possible to write common view of the required equation of the line:

\frac{x-X_A}{X_B-X_A} =\frac{y-Y_A}{Y_B-Y_A};

2) if to substitute the coordinates of A&B into the common equation, then:

\frac{x+1}{5+1} =\frac{y-10}{2-10}; \ => \frac{x+1}{6}=\frac{y-10}{-8};

3) finally, in slope-intersection form:

3y= -4x+26; ⇔ y= -4/3 x +26/3.

P.S. the suggested way of the solution is not the only one.

4 0
2 years ago
What is the solution set to the equation (3x−9)(5x−3)=0?
andreev551 [17]
This product could be zero if one or both of the parenthesis are zero.
3x-9=0; 3x=9; x= 3
5x-3=0; 5x=3; x=3/5

The solution is { 3/5, 3}
8 0
3 years ago
Read 2 more answers
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