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Dima020 [189]
3 years ago
10

One weekend, Paola started reading a book for school. She read 35 pages of the book on Saturday. On Sunday she read 15 pages an

hour. How many total pages of the book had Paola read after reading for 4 hours on Sunday?
Mathematics
1 answer:
Sidana [21]3 years ago
6 0
35 + 15 x 4 = 60. Paola read 60 pages in total.
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A penny, nickel, and dime are simultaneously flipped. What is the probability that heads are showing on at least 6 cents worth o
Nastasia [14]

Answer:

5/8

Step-by-step explanation:

The number of possible outcomes after flipping 3 coins is $2 \times 2 \times 2 = 8$. If the dime isn't heads, we need both the penny and nickel to be heads. If the dime is heads, the other two could be anything. So there are a total of $1+(2 \times 2)=5$ ways for us to get at least 6 cents. The answer is $\boxed{\dfrac58}.$

4 0
2 years ago
Select the condition for which it is NOT possible to construct a triangle.
maw [93]

Answer:

A triangle with side lengths 4 cm, 5 cm, and 15 cm

Step-by-step explanation:

In order to form a triangle with given side lengths, sum of any two sides must always be greater than the third side.

4+5= 9\ngtr 15\\

6 0
3 years ago
Find the height of a cone with a volume of 377 inches and a radius of 4 inches
Gwar [14]
I think the answer is 22.5
6 0
3 years ago
A quadratic equation is shown below: 3x2 − 15x + 20 = 0 Part A: Describe the solution(s) to the equation by just determining the
Triss [41]

Answer:

\text{The roots of }3x^2+5x-8=0\text{ are }x=1,\frac{-8}{3}

Step-by-step explanation:

\text{Part A: Given a quadratic equation }3x^2-15x+20=0  

\text{Comparing above equation with }ax^2+bx+c=0  

a=3, b=-15, c=20

Discriminant can be calculated as

D=b^2-4ac

D=(-15)^2-4(3)(20)=225-240=-15

The roots are imaginary

The solution is

x=\frac{-b\pm\sqrt{D}}{2a}

x=\frac{-(-15)\pm \sqrt{-15}}{2(3)}=\frac{15\pm\sqrt{15}i}{6}

The roots are not real i.e these are imaginary    

\text{Part B: Given a quadratic equation }3x^2+5x-8=0  

\text{Comparing above equation with }ax^2+bx+c=0  

a=3, b=5, c=-8

Discriminant can be calculated as

D=b^2-4ac

D=(5)^2-4(3)(-8)=25+96=121>0

The roots are real

By quadratic formula method

The solution is

x=\frac{-b\pm\sqrt{D}}{2a}

x=\frac{-5)\pm \sqrt{121}}{2(3)}=\frac{-5\pm 11}{6}

x=1,\frac{-8}{3}

which are required roots.

I choose this method because I can get the solutions directly by substituting the values in formula, and I don't have to guess the possible solutions.

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3 years ago
Bicycle started writing at 8 AM the diagram below shows the distance the bicycle had traveled at different times what was the bi
damaskus [11]
56 hours per hour thats the answer I got
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4 years ago
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