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3 years ago

Please please answer

Mathematics

1 answer:

gizmo_the_mogwai [7]3 years ago

7 0

Answer:

$-5$

Step-by-step explanation:

$(f\circ g)(-1)=f(g(-1))=f(1-3)=f(-2)=-4-1=-5$

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Two families visited an amusement park. The first family bought 2 hot dogs and 3 bottles of waters, which totaled $18. The secon

Ghella [55]

Answer:

$6.00

Step-by-step explanation:

To solve this problem, we have to construct two separate equations for each family, and then use any of the methods for solving simultaneous equations.

Let's consider h to represent the cost of 1 hot dog, and w to mean the cost of 1 water bottle.

• For the first family:

$2h + 3w = 18$

We can rearrange the equation to make w the subject:

⇒ $3w = 18 - 2h$

⇒ $w = \frac{18 - 2h}{3}$

• For the second family:

$4h + 2w = 28$

Since we have previously obtained an expression for w in terms of h, we can substitute that expression for w in the above equation, and then solve for h:

⇒ $4h + 2(\frac{18 - 2h}{3}) = 28$

⇒ $4h + \frac{36 - 4h}{3} = 28$

⇒ $12h + 36 - 4h = 84$ [Multiplying both sides of the equation by 3]

⇒ $8h + 36 = 84$

⇒ $8h = 48$

⇒ $h = \bf 6$

∴ The price of one hot dog is $6.00.

7 0

2 years ago

I need help with this question

pishuonlain [190]

Answer:

1 <—5⁰

25<—5²

1/25<—5-²

5<—5¹

6 0

3 years ago

A car dealership decides to select a month at random for its annual sale find the probability that it will be July or October

yawa3891 [41]

Answer:

Step-by-step explanation:

there are 12 posible months in a year and 2 months ( July and October )when the sale might happen.

P= 2/12 = 1/6

3 0

3 years ago

Angle 1 and angle 2 are a linear pair. Measure of angle 1 = x-36, and measure of angle 2 = x+84. Find the measure of each angle.

patriot [66]

Angle1 + angle2 = 180°(because they are a linear pair)
or, (x-36) + (x+84) = 180
or, x - 36 + x + 84 = 180
or, 2x + 48 = 180
or, 2x = 180 - 48
or, 2x = 132
or, x = 132/2
therefore, x = 66
angle1 = (x - 36) = 66-36 = 30°
angle2 = (x+84) = 66+ 84 =150°

5 0

3 years ago

Read 2 more answers

Distribute and the combine like terms 5-3(n+4) -2

murzikaleks [220]

The answer is 3(-3-n) :) hope this helps

3 0

3 years ago