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3 years ago

Charlene's age is 4 less than 3 times Mary's age, x.

Mathematics

2 answers:

erik [133]3 years ago

5 0

The answer would be A

KatRina [158]3 years ago

4 0

It is A......................

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the picture below shows the path that puppy Liz is running. The electrical post is 40 feet tall. Puppy liz usually starts at the

anzhelika [568]

Puppy Liz has to run approx 70ft to get to fire hydrant from the bench post.

Step-by-step explanation:

Let bench post be point A, fire hydrant be B and electrical post bottom be C and top be O.

We are given CO = 40ft

and angle BOC = 34°

angle AOC = 34 +23 = 57°

Let AB be y and AC be x

Clearly two right triangles are formed.

We can say,

In triangle BOC,

cos34° = Perpendicular ÷ Base = x÷40 => x = 40cos34°

and In triangle AOC

cos57° = Perpendicular ÷ Base = (x+y)÷40

substituting value of x from first equation to second we get,

40cos57° = 40cos34° + y

y = 40(cos57° - cos34°)

y = 40x1.75

y = 70ft which is the required answer.

8 0

4 years ago

Read 2 more answers

Willie won 125 lollipops playing hoops at

zlopas [31]

Answer:

Step-by-step explanation:

Easiest way to do this is to work backwards.

If Willie only has 1 remaining lollipop, this means that he must've given a total of 124 lollipops to his friends. (125 - 1 = 124)

Then we know he gave 4 lollipops to each friend. So all you need to do is divide the total number of lollipops he gave to his friends (124) by how many he gave to each friend.

Number of friends = Total number of lollipops given to friends / Number of lollipops given to each friend.

Number of friends = $\frac{124}{4} = ?$

4 0

3 years ago

The domain of discourse is sets. Suppose some predicate Q is true for all elemenst of A: ∀a ∈ A Q(a). Recall the definition of s

Sloan [31]

Answer:

See the step-by-step explanation

Step-by-step explanation:

Let c be any element of C. (I'm not sure wether you have to assume that C is non-empt or not)

C is a subset of B. That means that as c is in C, it is also in B. ( $c \in C \Rightarrow c \in B$ )

Now, B is a subset of A. It follows that as $c \in B \Rightarrow c \in A$ .

That means c is an element of A. The predicate Q is true for all elements of A, including c.

Because we let c be any element of C, we have proven that the predicate Q is true for all elements in C.

5 0

3 years ago

What is the area of the parallelogram shown?

o-na [289]

Step-by-step explanation:

heght x base

13 x 18

the hight can be measured by the paralel

7 0

3 years ago

The cost to rent a surfboard at the beach is $10.25 an hour plus an insurance fee of $25. Keith spent $55.75 when renting a surf

goblinko [34]

Answer: Keith spent 3 hours renting the surfboard.

Step-by-step explanation:

h=hour

10.25h+25=55.75

55.75-25= 30.75

30.75/10.25= 3

and if you want to check you can do

10.25(3)+25=

which would equal to 55.75

4 0

3 years ago