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strojnjashka [21]
3 years ago
14

Hellp me on number 3 pls

Mathematics
2 answers:
Y_Kistochka [10]3 years ago
4 0

Answer:

a. +150, b. -15 yards, c. -75 feet, d. +35 degrees, e. -$24.75

Step-by-step explanation:

You are just evaluating the (-) and (+) symbol based off the term being used. If they are gaining something its a (+) if its a loss in any way shape or form it is a (-)

Pavel [41]3 years ago
3 0

Answers:

  • a) 150
  • b) -15
  • c) -75
  • d) 35
  • e) -24.75

The values for A and D are positive. The values for B, C, and E are negative.

When you win money, that's a positive thing. Losing money is negative. Being in debt is also negative.

When you're above sea level, then that's a positive height. Below sea level is a negative height. The same applies to temperature as well.

It might help to draw a vertical number line and plot each of these values to see how they're related and how they are sorted. You'll have 150 at the very top, then 35 next on down, followed by -15, -24.75, and finally -75 at the very bottom.

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Sally invests £8000 in a savings account. The account pays 2.8% compound interest per year work out the value of her investment
Alborosie

Answer: the value of her investment after 4 years is £8934.3

Step-by-step explanation:

The formula for determining compound interest is expressed as

A = P(1+r/n)^nt

Where

A = total amount in the account at the end of t years

r represents the interest rate.

n represents the periodic interval at which it was compounded.

P represents the principal or initial amount invested.

t represents the duration of the investment in years.

From the information given,

P = 8000

r = 2.8% = 2.8/100 = 0.028

n = 1 because it was compounded once in a year.

t = 4 years

Therefore,

A = 8000(1+0.028/1)^1 × 4

A = 8000(1+0.028)^4

A = 8000(1.028)^4

A = £8934.3 to the the nearest penny

6 0
4 years ago
How would I solve 7r=-7/2? I know the answer is -1/2 I just don't understand how to get -1/2 as my answer.
Sonja [21]
7r=-\dfrac{7}{2}\\
r=-\dfrac{7}{2}\div7\\
r=-\dfrac{7}{2}\cdot\dfrac{1}{7}\\
r=-\dfrac{1}{2}
8 0
3 years ago
What is the midrange is the following data set 5,11,10,12,4,12,18,18,18
Rzqust [24]

Answer:

11.5

Step-by-step explanation:

midrange formula= (high + low)/2

(18 + 5)/2

=23/2

=11.5

8 0
3 years ago
What is the common difference for this arithmetic sequence -6,-1,4,9,14 A.6 B.5 C.3 D.4
lawyer [7]
The common difference is B. 5 because the numbers are increasing by 5.
4 0
3 years ago
Read 2 more answers
20 points helpp!!! i need it to be ready soon:/
Shkiper50 [21]

Answer:

Q7) 25.5

Q8) 25

Q9) 10

Q10) 12.7

Q11) 34

Q12) 24

Step-by-step explanation:

Q7) c² = a² + b²

x² = 18² + 18²

x = √18² + 18²

x = 18√2 = 25.5

Q8) c² = a² + b²

x² = 20² + 15²

x = √20² + 15²

x = 25

Q9) c² = a² + b²

26² = 24² + x²

x = √26²-24²

x = 10

Q10) c² = a² + b²

x² = 9² + 9²

x = √9² - 9²

x = 9√2 = 12.7

Q11) c² = a² + b²

x² = 30² + 16²

x = √30² + 16²

x = 34

Q12) c² = a² + b²

25² = x² + 7²

x = √25² - 7²

x = 24

!!

4 0
3 years ago
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