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andriy [413]
3 years ago
5

The cost of three notebooks and four pencils is 8.50. The cost of final parts and eight pages is 14.50. Determine the cost of on

e notebook and the cost of one pencil?
Mathematics
1 answer:
Nikolay [14]3 years ago
5 0

Answer: the answ is 1 nb is 2$ and a pn is $0.50.

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Factor this expression.<br> x2 + 9x + 8
Ket [755]

Answer:

(x+1)(x+8) When factoring squares whose squared coefficient is one the roots must add up to the coefficient of the slope and multiply out to the intercept value.

6 0
3 years ago
How long can late payments stay on your credit report?
ratelena [41]
The exception is if you are 60 days<span> late often which will certainly hurt your scores. Otherwise, one late payment should not cause long term damage. </span>90 days<span>late: This record will damage your credit scores significantly for up to </span>seven years<span>.</span>
5 0
3 years ago
What is one of the solutions to the following equations? y2+x2=53<br> Y-x=5
Olenka [21]
(1)  y² + x² = 53
(2)  y - x = 5 ⇒ y = x + 5

subtitute (2) to (1)

(x + 5)² + x² = 53      |use (a + b)² = a² + 2ab + b²

x² + 2x·5 + 5² + x² = 53

2x² + 10x + 25 = 53     |subtract 53 from both sides

2x² + 10x - 28 =0     |divide both sides by 2

x² + 5x - 14 = 0

x² - 2x+ 7x - 14 = 0

x(x - 2) + 7(x - 2) = 0

(x - 2)(x + 7) = 0 ⇔ x - 2 = 0 or x + 7 = 0 ⇔ x = 2 or x = -7

subtitute the values of y to (2)

for x = 2, y = 5 + 2 = 7
for x = -7, y = 5 + (-7) = 5 - 2 = 3

Answer: x = 2 and y = 7 or x = -7 and y = 3
4 0
3 years ago
What is the least common multiple of 14, 20, and 15?
Komok [63]

14, 15, 20 | 2

7, 15, 10 | 2

7, 15, 5 | 3

7, 5, 5 | 5

7, 1, 1 | 7

1, 1, 1

Answer: \bf2^{2} × 3 × 5 × 7 = 420

Hope it helped,

Happy homework/ study/ exam!

7 0
3 years ago
Read 2 more answers
Noor brought 21 sheets of stickers. She gave 1/3 of a sheet to each of the 45 students at recess. She wants to give teachers 1 1
Tamiku [17]

Answer:

\frac{3}{2}t+15\leq 21

Step-by-step explanation:

Let t represent the number of teachers.

We have been given that Noor gave 1/3 of a sheet to each of the 45 students at recess.

Let us find the number of sheets given to students by Noor by multiplying the total number of students by the part of sheet given to each student.

\text{Number of sheets given to 45 students}=45\times \frac{1}{3}

\text{Number of sheets given to 45 students}=15

So, Noor gave 15 sheets to 45 students.

We have been given that Noor wants to give 1\frac{1}{2}=\frac{3}{2} sheet to each teachers, so the number of sheets given to t teachers will be \frac{3}{2}t.

As Noor has bought 21 sheets, so the number of sheets given to students and t teachers will be less than or equal to 21.

We can represent this information in an inequality as:

\frac{3}{2}t+15\leq 21

Therefore, the inequality \frac{3}{2}t+15\leq 21 represents the number of teachers ,t, Noor could give sheets of stickers too.

6 0
3 years ago
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