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lora16 [44]
3 years ago
15

The sum of 18 and a number

Mathematics
2 answers:
Ann [662]3 years ago
7 0
18+x is what that means
Pani-rosa [81]3 years ago
6 0
The sum of 18 and 3 is 21
You might be interested in
How to solve 2x² - x - 3 = 0
Pie
2x²- x -3 = 0 ⇒ 2x²-x= 0 + 3 ⇒ 2x² - x = 3 ⇒ 2x = 3 ⇒ x = 1.5
            
6 0
3 years ago
Let (8,−3) be a point on the terminal side of θ. Find the exact values of cosθ, cscθ, and tanθ.
denis23 [38]

Answer:

\text{Cos}\theta=\frac{\text{Adjacent side}}{\text{Hypotenuse}}=\frac{x}{R}=\frac{8}{\sqrt{73}}

\text{Csc}\theta=-\frac{\sqrt{73}}{3}

\text{tan}\theta =\frac{\text{Opposite side}}{\text{Adjacent side}}=\frac{y}{x}=\frac{-3}{8}

Step-by-step explanation:

From the picture attached,

(8, -3) is a point on the terminal side of angle θ.

Therefore, distance 'R' from the origin will be,

R = \sqrt{x^{2}+y^{2}}

R = \sqrt{8^{2}+(-3)^2}

  = \sqrt{64+9}

  = \sqrt{73}

Therefore, Cosθ = \frac{\text{Adjacent side}}{\text{Hypotenuse}}=\frac{x}{R}=\frac{8}{\sqrt{73}}

Sinθ = \frac{\text{Opposite side}}{\text{Hypotenuse}}=\frac{y}{R}=\frac{-3}{\sqrt{73} }

tanθ = \frac{\text{Opposite side}}{\text{Adjacent side}}=\frac{y}{x}=\frac{-3}{8}

Cscθ = \frac{1}{\text{Sin}\theta}=\frac{R}{y}=-\frac{\sqrt{73}}{3}

6 0
3 years ago
Dorothy runs for 3.35 kilometres every day .<br> After 7 days how many meters has Dorothy ran
Verdich [7]

Answer:

23.45 meters

Step-by-step explanation:

To solve, you do 3.35*7, which gives you 23.45

4 0
3 years ago
Mark spends a total of $68.82 for 2 pairs of sneakers with the same cost. The sales tax is $5.32. Mark also uses a coupon for $3
shutvik [7]

Each pair of sneakers cost $33.25

Step-by-step explanation:

Given,

Total spent by Mark = $68.82

Sales tax = $5.32

Coupon used = $3.00

Price without sales tax = Total spent - sales tax

Price without sales tax = 68.82 - 5.32 = $63.50

As Mark used coupon, we will add this amount.

Amount of sneakers = Price without sales tax + Coupon used

Amount of sneakers = 63.50+3.00 = $66.50

As this is price of two sneakers, we will divide it by 2;

Cost of one sneaker = \frac{66.50}{2}=\$33.25

Each pair of sneakers cost $33.25

Keywords: subtraction, addition

Learn more about addition at:

  • brainly.com/question/11007572
  • brainly.com/question/11015995

#LearnwithBrainly

5 0
3 years ago
Date:
Vlad [161]

Answer:

He should enter the lottery

Step-by-step explanation:

8 0
3 years ago
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