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Tomtit [17]
3 years ago
10

Three times a certain number is 45. What is the number?

Mathematics
1 answer:
andriy [413]3 years ago
4 0
The answer is fifteen (15)
Hope this helps!
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After reading 80% of her e-mails in her inbox, Danette still has M unread emails. Which of the following expressions could repre
Fofino [41]

Answer:

m/(1 - .8)

Step-by-step explanation:

She read 80% of her emails, which is .8 of the total.  So her unread emails would be 100% - 80% = 1 - .8

that means me can be written as:

m = (1 - .8)t

where t is the total

If we solve for t, we get:

t = m/(1 - .8)

4 0
3 years ago
Read 2 more answers
What is the rate of change between (29,9) and (33,10)?
Tema [17]

Answer:

\frac{1}{4}

Step-by-step explanation:

The rate of change is a measure of the slope

Calculate the slope m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (29, 9) and (x₂, y₂ ) = (33, 10)

m = \frac{10-9}{33-29} = \frac{1}{4} ← rate of change

6 0
3 years ago
The area of a soccer field is ( 24x^2 + 100x + 100) m^2. The width of the field is (4x + 10)m. What is the length?
Firdavs [7]
<span>The answer should be (12x + 20) (2x + 5)</span>
4 0
3 years ago
Evaluate when n = 3.<br> (244 − n)×n<br> -3<br> 9<br> 55<br> 72
HACTEHA [7]

Answer:

(244 - n)n  \\ n = 3 \\ (244 - 3) \times 3 \\  = (241) \times 3 \\  = 723

3 0
2 years ago
Find the area of each figure. Round to the nearest tenth if necessary.
Nataly_w [17]

Answer:

220ft^2

Step-by-step explanation:

In red: 12ft - 10ft = 2ft and there 2 sides so 2ft / 2 = 1ft

In blue: 18ft - 12ft = 6ft

The missing area in dark blue: 6ft x 1ft = 6 / 2 = 3

total rectangle area: 12ft x 18ft = 216

216 - (3 + 3) = 216 - 6 = 200            subtract 6, we added that area in

8 0
2 years ago
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