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Leno4ka [110]
3 years ago
9

D=u^2/2a

Mathematics
1 answer:
marysya [2.9K]3 years ago
7 0

a)

30.65^2/(2*5.15)=91.2061

d=91.2061

b)i)90

ii) Mathswatch is critical of anything apart from it's system so I dont know what the answer is for this one

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Write a multiplication equation that represents the question: how many 3/8 are in 8?
goldenfox [79]

Answer:

8

Step-by-step explanation:

\frac{3}{8} +\frac{3}{8} +\frac{3}{8} +\frac{3}{8} +\frac{3}{8} +\frac{3}{8} +\frac{3}{8} +\frac{3}{8}

\frac{3}{8} × 8

= 3

In algebra:

\frac{3}{8} × y = 3

y = 3 ÷ \frac{3}{8}

y = 8

7 0
3 years ago
It takes Mara 50 minutes to walk to her friends house 1 2/3 miles away. What is her walking pace in miles per hour?
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3 years ago
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nlexa [21]
840 is the answer
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5 0
3 years ago
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2 years ago
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Mary has 15 points with the total value of $1.75 if the coins are nickels and quarters how many of each kind are there
torisob [31]

Answer:

The number of nickel coins is 10 and the number of quarter coins is 5

Step-by-step explanation:

<u><em>The correct question is</em></u>

Mary has 15 coins with the total value of $1.75 if the coins are nickels and quarters how many of each kind are there

Let

x ----> the number of nickel coins

y ----> the number of quarter coins

Remember that

1\ nickel=\$0.05

1\ quarter=\$0.25

we know that

Mary has 15 coins

so

x+y=15 -----> equation A

The total value of the coins is $1.75

so

0.05x+0.25y=1.75 ----> equation B

Solve the system by graphing

Remember that the solution is the intersection point both graphs

using a graphing tool

The solution is the point (10,5)

therefore

The number of nickel coins is 10 and the number of quarter coins is 5

8 0
3 years ago
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