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Olenka [21]
3 years ago
6

If Mei has earned 30 points, write and solve a multiplication equation to find how many books she need to read.

Mathematics
2 answers:
melomori [17]3 years ago
7 0
I think you need to find what times 5 will give you 30.  6x5 is 30. She will need to read 6 books for 30 points.
sweet [91]3 years ago
3 0

Answer:

6\ books

Step-by-step explanation:

Let

x------> the number of books

we know that

The linear equation that represent this situation is equal to

5x=30

solve for x

Divide by 5 both sides

5x/5=30/5

x=6\ books

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Two less than the product of<br> 5 and the cube of a number.
slavikrds [6]

Answer:

5x^3-2

Step-by-step explanation:

Two less than the product of 5 and the cube of a number.

The product of 5 and the cube of a number can be translated to look like 5x^3.

You then take 5x^3 and subtract 2 to get 5x^3-2.

8 0
3 years ago
Which is the decimal expansion of the following 1/5
amid [387]

Answer:

Decimal expansion of 1/5 = 0.2

7 0
3 years ago
Find each measurement indicated. Round your answers to the nearest tenth. Please show your work. Part 2
uysha [10]

Answer:

4. 14.03 miles

5. 15.02 kilometers

6. 19.95 meters

Step-by-step explanation:

4. We need to use the law of sines, which states that for a triangle with angles A, B, and C and sides a, b, and c, respectively, then:

\frac{a}{sinA} =\frac{b}{sinB} =\frac{c}{sinC}

Here, a = 30, <A = 130, and <B = 21. So, let's plug these in:

\frac{30}{sin130} =\frac{b}{sin21}

b = AC = \frac{30}{sin130}*{sin21} ≈ 14.03 miles

5. Here, c = 7, <C = 23, and <A = 123. We want to find BC, which is just a:

\frac{7}{sin23} =\frac{a}{sin123}

a = BC = \frac{7}{sin23} *{sin123} ≈ 15.02 kilometers

6. Here, c = 22, <C = 88, and <B = 65. We want to find AC, which is just b:

\frac{22}{sin88} =\frac{b}{sin65}

b = AC = \frac{22}{sin88} *{sin65} ≈ 19.95 meters

Hope this helps!

8 0
3 years ago
Read 2 more answers
What is the approximate area of a sector with radius equal to 8 and measure of arc equal to 300°?
zimovet [89]
Sector Area = (central angle / 360) * PI * radius^2
Sector Area = 300 / 360 * PI * 8^2
Sector Area = (5/6) * 64 * PI
Sector Area = 53.3 * PI

Source:
http://www.1728.org/radians.htm


5 0
3 years ago
Read 2 more answers
Find the vertex of the parabola. y = -4x2 - 16x - 11
emmasim [6.3K]
The standard equation is y=ax^2+bx+k and the vertex way is y=a(x-h)(x-h)+x
so the coordinate for x is -b/2a, for your problem a=-4   b=-16 so the coordinate for x is -(-16)/(2*(-4))=-2. Now you have to replace x=-2 in your equation y=-4(-2)^2-16(-2)-11= 5.
The vertex is (-2, 5)
5 0
4 years ago
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