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3 years ago

Can somebody please help me? I will mark brainiest if i can! qr + r; use q = 3, and r = -6

Mathematics

2 answers:

Alenkasestr [34]3 years ago

6 0

<h3>Answer: -24</h3>

Explanation:

The letters q and r indicate placeholders for actual numbers.

In this case, we replace q with 3 and replace r with -6

Afterward we use the order of operations PEMDAS like so:

qr + r

3*(-6) + (-6)

-18 + (-6)

-24

Sveta_85 [38]3 years ago

5 0

The answer is -12. R times -6 is -18 and -18 plus -6 is -12

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Chandler Heisinger buys a monthly metro card, which entitles him to unlimited subway travel in New York City, for $81 per month.

ANTONII [103]

Let $r$ be the number of rides Chandler takes in a month. Then the cost with the MetroCard is still $81, but the cost without the MetroCard is $2r$ . So we can set up an equation representing what we want: "The cost with a MetroCard of r rides in a month is less than the cost without a MetroCard." In equations,
$81\ \textless \ 2r \\ r\ \textgreater \ 81/2\ \textgreater \ 40 \\
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Thus, at a minimum, Chandler must take 41 rides for his MetroCard to be cheaper than not having it.

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4 years ago

Can someone explain how you got the answer!!

gavmur [86]

9514 1404 393

Answer:

20 square units

Step-by-step explanation:

The area is given by the formula ...

A = bh

where b is the base of the parallelogram, and h is the perpendicular distance between the parallel bases. Using the numbers from the figure, we have ...

A = 5·4 = 20 . . . . square units

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Additional comment

You will notice this is the same formula as is used for a rectangle. You can consider the parallelogram to have the same area as a rectangle of these dimensions if you look at what happens when you cut the right triangle from the right end and add it to the left end. The result is a rectangle 5 units wide and 4 units high.

The same formula applies even if the skew is so great that the bases do not overlap. (That much skew would not result in a triangle of the kind shown in this diagram.)

6 0

3 years ago

The projected sales volume of a video game cartridge is given by the function s(p) = 3000 / (2p + a), where s is the number of c

Alex_Xolod [135]

Answer: 149 cartridges will be sold at 20 dollars per cartridge.

Step-by-step explanation:

Given: The projected sales volume of a video game cartridge is given by the function $s(p)=\dfrac{3000}{2p+a}$ , where s is the number of cartridges sold, in thousands; p is the price per cartridge, in dollars; and a is a constant.

Put s(p)=100000, p= 10, we get

$100000=\dfrac{3000}{2(10)+a}\\\\\Rightarrow\ 100=\dfrac{3}{20+a}\\\\\Rightarrow\ 100(20+a)=3\\\\\Rightarrow\ 2000+100a=3\\\\\Rightarrow\ 100a=-1997\\\\\Rightarrow\ a=-19.97$

i.e. $s(p)=\dfrac{3000}{2p-19.97}$

Put p=20, we get

$s(20)=\dfrac{3000}{2(20)-19.97}\\\\=\dfrac{3000}{40-19.97}\\\\=\dfrac{3000}{20.03}\approx149$

Hence, 149 cartridges will be sold at 20 dollars per cartridge.

8 0

3 years ago

Please help! I don't understand how to do this.

inn [45]

Step-by-step explanation:

8). CA = 9.20 ( multiply the given decimal by 100)

AB = 10.80

CB = 8.50

9). option e is correct side - side - side

10). SSS

11). 1 ( because with the given info. u can calculate the perimeter of the traingle only )

12) through the given info we can only find the perimeter of the traingle

so,

perimeter = sum of all sides

→ 9.2 + 8.5 + 10.8 = 28.5 m

hope this answer helps you dear...take care may u have a great day ahead!

3 0

2 years ago

gertrude won the jump rope contest four more times than elena. they have won a combined total of 18 jump rope contest. write and

OLga [1]

G = how many contests that Gertrude won
e = how many contests Elena won

Gertrude 4 more times than Elena
g = e + 4
They won a total of 18 contests
g + e = 18

7 0

3 years ago