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1 year ago

If you multiply a number by 3 an then subtract 5,you will get 40.what is the number?

Mathematics

1 answer:

Murljashka [212]1 year ago

3 0

Answer:

The answer is 15

Step-by-step explanation:

15*3=45-5=40

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Randall buys a wooden board that is 5 7/8 feet long. The cost of the wooden board is 0.25 per foot including tax. Enter the tota

AURORKA [14]

Answer:

Total Cost = $1.47

Step-by-step explanation:

Length of the wooden board = $5\frac{7}{8} =\frac{47}{8}$

Cost of the wooden board = $0.25 per foot

Total Cost = Cost per foot X Total Length in foot

= $0.25 X \frac{47}{8} =1.47$

Total Cost = $1.47

7 0

2 years ago

Kelsey had 8 entries in her science journal. Last week, she wrote x more entries. How many entries are in her science journal no

In-s [12.5K]

Answer:

Kelsey has 8 plus more entries

8 + x

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1 year ago

What is the slope of the line that passes through points (1/4,3) and (5,8)

Alex73 [517]

Answer:

20/19

Step-by-step explanation:

y2-y1/x2-x1

= 8-3/5-1/4

=20/19

8 0

2 years ago

A turtle can walk 1/12 of a kilometer in an hour. The turtle is 1/5 of a kilometer away from a pond. At this speed how long will

Cloud [144]

Answer:

2.4 hours

Step-by-step explanation:

Get common denominators -

1/12 x 5/5 = 5/60

1/5 x 12/12 = 12/60

The turtle walks ata 5/60 a kilometer an hour.

divide remaining time by 5/60

(12/60) / (5/60) = 2.4 hours

4 0

2 years ago

Read 2 more answers

How do you factor this? x^{2} + 5 x- 9 = ?

Oksanka [162]

$x^2+5x-9\\\\a=1;\ b=5;\ c=-9\\\Delta=b^2-4ac\\\\\Delta=5^2-4\cdot1\cdot(-9)=25+36=61 > 0\\\\x_1=\dfrac{-b-\sqrt\Delta}{2a}\ and\ x_2=\dfrac{-b+\sqrt\Delta}{2a}\\\\\sqrt\Delta=\sqrt{61}\\\\x_1=\dfrac{-5-\sqrt{61}}{2\cdot1}=\dfrac{-5-\sqrt{61}}{2}\\\\x_2=\dfrac{-5+\sqrt{61}}{2\cdot1}=\dfrac{-5+\sqrt{61}}{2}\\\\x^2+5x-9=\left(x-\dfrac{-5-\sqrt{61}}{2}\right)\left(x-\dfrac{-5+\sqrt{61}}{2}\right)$

6 0

2 years ago