3 years ago

What equations are equivalent to 3(5x+4)=12x+18

Mathematics

2 answers:

Alchen [17]3 years ago

8 0

Answer:

Step-by-step explanation:

Vladimir79 [104]3 years ago

4 0

Answer:

Step-by-step explanation:

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A Web music store offers two versions of a popular song. The size of the standard version is

sashaice [31]

Let s be standard and h be high-quality versions of the song.
To figure this out, let's make a system of equations:
2.5s + 4.5h = 5740
h = 4s
First substitute the second equation into the first for h.
2.5s + 18s =5740
Then combine like terms.
20.5s = 5740
Lastly, divide each side by 20.5 to get the number of standard downloads:
s = 280
Hope this helps!

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3 years ago

2 bags of cat food cost $8.50, how much would 5 bags of cat food cost ?

luda_lava [24]

Answer:

$42.05

Step-by-step explanation:

First do $8.50/2=4.25

This means that one bag of cat food is $4.25

Now you multiply 5*4.25=$21.25,

I hope this helps and is correct!

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3 years ago

If sin Q= 4/5, cos P + cos Q=

Mama L [17]

CosP=sinQ
cosQ=sinP
Thus cosP=4/5 and cosQ=3/5 so the sum is 7/5

7 0

3 years ago

A line passes through the point (6,-4) and has a slope of - 4/3. Write an equation in point-slope form for this line. A line pa

Alex Ar [27]

Y+4 = (-4/3)(x-6)

Mark brainliest please

Hope this helps you

3 0

2 years ago

Calculate the area of triangle ABC with altitude CD, given A (−3, −4), B (−6, 2), C (0, 0), and D (−4, −2). a. 14 square units b

babymother [125]

Answer:

b. 15 square units

Step-by-step explanation:

We notice from the graph that AB is the hypotenuse of a right triangle 3 units wide and 6 units high. The Pythagorean theorem tells you the length of that will be ...

AB = √(3^2 +6^2) = √45 = 3√5

Similarly, altitude CD is the hypotenuse of a right triangle 4 units wide and 2 units high, so its length will be ...

CD = √(4^2 +2^2) = √20 = 2√5

The area is given by the formula ...

A = 1/2bh

A = 1/2(3√5)(2√5) = 15 . . . square units

3 0

2 years ago