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Dominik [7]
3 years ago
12

Can someone help me on what is the number of questions answered correctly? Help please

Mathematics
2 answers:
Arlecino [84]3 years ago
4 0
You're trying to find the "part":

x=.90*30
Vesnalui [34]3 years ago
3 0
.90 × 30 = 27 questions answered correctly
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Identify whether the variable in the information below is qualitative or quantitative. Government agencies carefully monitor wat
Len [333]

Answer: quantitative

Step-by-step explanation:

Measured variables in statistics may be subdivided into quantitative or Qualitative variables depending on whether the variable in question is numeric or non-numeric. Variables which are designed to evaluate on the basis of Number or quantity may be termed as quantitative variables while those which measure attribute and are used for characterization are called Qualitative variables. In the scenario above, the variable is concerned with the determination of concentration of nitrogen draining into water bodies, concentration follows that numeric calculations be Made in other to determine the amount of nitrogen in milligram per Litre in a particular water body in other to prevent its effect on wildlife which could result from excessive concentration in water bodies.

8 0
3 years ago
Which expression represents the area of the shaded region?
irina1246 [14]

Given:

A circle of radius r inscribed in a square.

To find:

The expression for the area of the shaded region.

Solution:

Area of a circle is:

A_1=\pi r^2

Where, r is the radius of the circle.

Area of a square is:

Area=a^2

Where, a is the side of the square.

A circle of radius r inscribed in a square. So, diameter of the circle is equal to the side of the square.

a=2a

So, the area of the square is:

A_2=(2r)^2

A_2=4r^2

Now, the area of the shaded region is the difference between the area of the square and the area of the circle.

A=A_2-A_1

A=4r^2-\pi r^2

A=4r^2-\pi r^2

A=r^2(4-\pi )

Therefore, the correct option is (a).

5 0
3 years ago
Ron charges $10 to park a car in his parking lot. He pays $50 per day to rent the lot. If 40 cars park in his lot during the day
jolli1 [7]
From the cars parked in the lot he will earn (40)($10)=$400, but he will need to pay $50 for the rent. Thus his total $ earned will be $400-$50=$350.
5 0
3 years ago
Read 2 more answers
Is 5.134 > 5.14 true?
IrinaK [193]

Answer:

No, it's false.

Step-by-step explanation:

Because 5.14>5.134.

7 0
3 years ago
G is the centroid and BE = 12. Find BG and GE.
Alona [7]
The centroid is the intersection point <span>of the medians.
</span><span>So the distance from any vertex to the </span><span>centroid is 2/3 the length.
</span><span>BG=1/3*BE and GE=2/3*BE
</span><span>
So answer: </span>BG = 4, GE = 8
7 0
3 years ago
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