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Vladimir [108]
3 years ago
7

There are five tests in a grading period. A student received grades of 98, 80, and 90, 96 on the first four tests. What grade mu

st the student earn on the last test to have a 90 or better average for the grading period?​
Mathematics
1 answer:
inn [45]3 years ago
3 0

Answer:

80

Step-by-step explanation:

The median of the group is 80

If you add all the five numbers up they equal 454 divide by 5 the answer would be 90.8

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The total surface area of a cube is 96cm2, find its volume.
Setler [38]

Answer:

\huge\boxed{V=64cm^3}

Step-by-step explanation:

The formula of a surface area of a cube:

SA=6a^2

The formula of a volume of a cube:

V=a^3

We have

SA=96cm^2

Calculate the edge length (<em>a</em>).

6a^2=96           <em>divide both sides by 6</em>

a^2=16\to a=\sqrt{16}\\\\a=4(cm)

Calculate the volume of a cube:

V=4^3=64(cm^3)

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3 years ago
Indicate whether each system of equations has no solution, one solution, or infinitely many solutions. y=2x+2y=2x+4
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Answer:

Step-by-step explanation:

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2 years ago
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Ivenika [448]
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3 years ago
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Find the arc length of a central angle of 7pi/3 in a circle whose radius is 3 inches.
skelet666 [1.2K]

\bf \textit{arc's length}\\\\ s=r\theta ~~ \begin{cases} r=radius\\ \theta =angle~in\\ \qquad radians\\ \hrulefill\\ r=3\\ \theta =\frac{7\pi }{3} \end{cases}\implies s=3\cdot \cfrac{7\pi }{3}\implies s=7\pi

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Fractions into decimals 5/16
chubhunter [2.5K]

Answer: 1 11/16

Step-by-step explanation:

5 divided by 5 is 1 so that’s a whole number and 11 is left 16-5=11 so the fraction will be the mixed number as 1 11/16. And also if you can, can you plz help me on my science hw it’s due tomorrow and I don’t know what to do!

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