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3 years ago

pls help the question is in the pic !!!

Mathematics

2 answers:

LiRa [457]3 years ago

6 0

The answer is 45! A triangle measures 180 in total so add all those three angles to get 180.

garri49 [273]3 years ago

6 0

^^ the answer is 45

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the product of two consecutive integers n and n+1 is 42. what is the positive integer that satisfies the situation?

MrMuchimi

$n(n+1)=42 \\
n^2+n=42 \\
n^2+n-42=0 \\ \\
a=1 \\ b=1 \\ c=-42 \\ b^2-4ac=1^2-4 \times 1 \times (-42)=1+168=169 \\ \\
n=\frac{-b \pm \sqrt{b^2-4ac}}{2a}=\frac{-1 \pm \sqrt{169}}{2 \times 1}=\frac{-1 \pm 13}{2} \\
n=\frac{-1 -13}{2} \ \lor \ n=\frac{-1+13}{2} \\
n=\frac{-14}{2} \ \lor \ n=\frac{12}{2} \\
n=-7 \ \lor \ n=6$

The positive integer is 6.
The consecutive integers are 6 and 7.

8 0

3 years ago

How much do I have to deposit today in order to have $5000 in 5 years if interest is 8.5% compounded annually?

alina1380 [7]

Answer:

PV= $3,402.9

Step-by-step explanation:

Giving the following formula:

Future Vale (FV)= $5,000

Number of years (n) 5 years

Interest rate (i)= 8.5% compounded annually

<u>To calculate the initial investment (PV), we need to use the following formula:</u>

PV= FV / (1 + i)^n

PV= 5,000 / (1.085^5)

PV= $3,402.9

6 0

3 years ago

What are the steps to find the slope of the line through the pair of points ? <br>

Artyom0805 [142]

Answer:

$\frac{-15}{-14} \\$

Step-by-step explanation:

You would do y2-y1 over x2-x1. In your equation, this would be -15-0 over -11-3, giving you -15 over -14

8 0

3 years ago

4. A company makes two kinds of trading cards.

ziro4ka [17]

Value + value = 14 dollars
0.65x + 10-0.40x = 14
0.25x = 4
x = 16
25-x =9

4 0

3 years ago

3 friends went to a coffee shop. Each of them got a muffin and two cups of coffee. The total cost of the order was $21.75. If a

Pavlova-9 [17]

Answer:I think it’s 3.25(3)+6c=$21.75, I’m not sure

Step-by-step explanation:

6 0

3 years ago

￼pls help the question is in the pic !!!

pls help the question is in the pic !!!