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3 years ago

jennifer reads p pages every day . After 15 days , she has read 300 pages . write an equation to represent this situation

Mathematics

2 answers:

jeyben [28]3 years ago

6 0

Answer:

Step-by-step explanation:

p = 1 day

300 = 15

300/15 = 20

Jennifer reads 20 pages per day

Ymorist [56]3 years ago

6 0

Answer:

p = 20

Equation:

p × 15 = 300

Step-by-step explanation:

p × 15 = 300

300 / 15 = p

20 = p

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Of the cakes at Naomi's Bakery, 1/6 have chocolate frosting. Of the cakes with chocolate frosting, 1/5 have raspberry filling. W

Sever21 [200]

Answer:

$\frac{1}{6} \times \frac{1}{5 } \\ \frac{1}{30}$

5 0

3 years ago

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:

The correct question is

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

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

The total value of the coins is $1.75

$0.05x+0.25y=1.75$ ----> 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

Emma has money into savings accounts. One rate is 8% and the other is 12%. If she has $450 more in the 12% account and the total

AveGali [126]

Let's say that the value invested in the account with a rate of 8% is "x", then the amount invested in the account with a rate of 12% is:

$x+450$

To calculate the total interest we need to calculate the interest of each individual account and sum them:

$\begin{gathered} \frac{8}{100}\cdot x=0.08\cdot x \\ \frac{12}{100}\cdot(x+450)=0.12\cdot x+54 \end{gathered}$

The total interest is the sum of the two expressions above:

$\begin{gathered} 220=(0.08\cdot x)+(0.12\cdot x+54) \\ 220=0.08\cdot x+0.12\cdot x+54 \\ 220-54=0.2\cdot x \\ 166=0.2\cdot x \\ 0.2\cdot x=166 \\ x=\frac{166}{0.2} \\ x=830 \end{gathered}$

The value invested in the account with 8% interest is 830, the one invested in the account with 12% interest is 1280.

7 0

1 year ago

0.3 kilograms of pecans were on sale at the grocery store. The chef needs to make seven baskets for Thanksgiving. How many kilog

sveticcg [70]

Hmmmm 9,0 or u can mutiply

4 0

3 years ago

Find an explicit formula for the arithmetic sequence -11, -3, 5, 13, ....

Alekssandra [29.7K]

Answer:

b(n) = -11 + (n-1)*8

Step-by-step explanation:

Let n be the sequence number, with n=1 the first number b(1) -11

The sequence changes by +8 each step.

b(1) -11 + 8 = -3

b(2) -3 + 8 = 5

b(3) 5 + 8 = 13

b(4) 13

b(1) = -11

b(2) = -3. or b(1) + 1*8

b(3) = 5, or b(1) + 2*8

b(4) = 13, or b(1) + 3*8

We note that each step adds a multiple of 8 to the initial value of -11. This can be stated as (n-1)*8

The formula for this sequence would be b(n) = b(1) + (n-1)*8

b(n) = -11 + (n-1)*8

Check: Does n=3 return the value of 5?

b(n) = -11 + (n-1)*8

b(3) = -11 + ((3)-1)*8

b(3) = -11 + (2)*8

b(3) = -11 + 16

b(3) = 5 YES

5 0

2 years ago