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3 years ago

3. Adult train tickets cost $25, student tickets costs $15 and child tickets cost $10. If a group of a

Mathematics

1 answer:

Hunter-Best [27]3 years ago

8 0

Step-by-step explanation:

Total Cost = 25a + 15b + 10c

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Answer is 12.5 degrees

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2 years ago

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Find the gradient of the line segment between the points (3,-2) and (5,-5). Give your answer in its simplest form.

Paraphin [41]

Answer:

2/7

Step-by-step explanation:

gradient y²-y¹/x²-x¹=4-2/4-(-3)

=2/7

{Taking (x¹,y,¹)=(-3,2)

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3 years ago

calculate E, the amount of euros that has the same value as D U.S. dollars, using the equation E=17/20D=

Aleksandr [31]

The given equation is: E=17/20 D , where E=amount of Euros and D= amount of U.S dollar.

Now for 1 U.S dollar, we need to plug D=1 into the above equation. So, we will get.........

E=17/20(1)

E=1/20=0.85

0.85 Euros have the same amount as 1 U.S dollar.

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4 years ago

At an ice cream shop, there are 3 different flavors of ice cream and 10 different toppings. How many different outcomes are poss

kenny6666 [7]

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3 years ago

Find the value of b. Round your answer to the nearest tenth.

marissa [1.9K]

Answer:

Side CA = 7.8

Step-by-step explanation:

Given:

Acute angled $\triangle ABC$ .

$\angle B =40^\circ$

AB = 10

BC = 12

We can use cosine rule here to find the side AC = b

Formula for cosine rule:

$cos B = \dfrac{a^{2}+c^{2}-b^{2}}{2ac}$

Where

a is the side opposite to $\angle A$

b is the side opposite to $\angle B$

c is the side opposite to $\angle C$

$cos 40 = \dfrac{12^{2}+10^{2}-b^{2}}{2\times 12\times 10}\\\Rightarrow cos 40 = \dfrac{144+100-b^{2}}{240}\\\Rightarrow 0.77 = \dfrac{244-b^{2}}{240}\\\Rightarrow 244-b^{2} = 0.77 \times 240\\\Rightarrow 244-b^{2} = 183.85\\\Rightarrow 244-183.85 = b^{2}\\\Rightarrow b^2 = 60.15\\\Rightarrow b = 7.76$

To the nearest tenth b = 7.8

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3 years ago