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andrew11 [14]
3 years ago
7

The computer game Peter wants to buy will cost at least $50 and not more than $70. He earns $3 an hour running errands for his g

randmother. Which inequality shows the number of hours, n, he will have to work to pay for the game?
A. 3n ≥ 20
B. n/3 ≥ 20
C. 50 ≤ 3n ≤ 70
D. 50 ≤ n/3 ≤ 70
Mathematics
2 answers:
taurus [48]3 years ago
7 0
The answer is C, where 50 is less than or equal to the amount of money he earned per hour which will have to be less than 70
Lunna [17]3 years ago
6 0

Answer:

The answer to your question is C

Just try it out

- have a nice day, be safe & healthy -

- peace out -

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A granite block in the shape of a right rectangular
Gnesinka [82]

Answer:

Step-by-step explanation:

7 0
3 years ago
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Nicole is running for school president. Her best friend designed a campaign poster, which measured 3 feet by 2 feet. Nicole like
melamori03 [73]

Answer:

The scale factor is 18 to 1 for the painting

Step-by-step explanation:

Here we want to get the scale factor of the original to what is reproduced

Let us have same units first

Mathematically;

1 foot = 12 inches

3 feet = 36 inches

2 feet = 24 inches

So 36 to 2 and 24 to 1 1/3

That will be ratio 36/2 = 18 to 1

same as 25 divided by 1 1/3 = 18 to 1

8 0
2 years ago
...........................
cupoosta [38]

Answer:

3/5 or 0.6

Step-by-step explanation:

Here, given the value of tan theta , we want to find the value of sine theta

Mathematically;

tan theta = 0pposite/adjacent

Sine theta = opposite/hypotenuse

Firstly we need the length of the hypotenuse

This can be obtained using the Pythagoras’ theorem which states that the square of the hypotenuse equals sum of the squares of the two other sides.

Let’s call the hypotenuse h

h^2 = 3^2 + 4^2

h^2 = 9 + 16

h^2 = 25

h = √(25)

h = 5

Now from the tan theta, we know that the opposite is 3

Thus, the value of the sine theta = 3/5 or simply 0.6

5 0
3 years ago
Can u plzzzz help me brainliest​
dmitriy555 [2]
3(4m-2) -2(m+5)
12m -6 -2m -10
10m -16
answer is 10m -16 :)
4 0
2 years ago
Read 2 more answers
I have 10 goats, n of which are male. I need to choose 2 of them to make a casserole.
snow_tiger [21]

Answer: There are 4 male goats.

Step-by-step explanation:

We know that n of the 10 goats are male.

The probability that in a random selection, the selected goat is a male, is equal to the quotient between the number of male goats (n) and the total number of goats (10)

The probability is;

p = n/10

Now the total number of goats is 9, and the number of male goats is n -1

then the probability of selecting a male goat again is:

q = (n-1)/9

The joint probability (the probability that the two selected goats are male) is equal to the product of the individual probabilities, this is

P = p*q = (n/10)*((n-1)/9)

And we know that this probability is equal to 2/15

Then we have:

(n/10)*((n-1)/9) = 2/15

(n*(n-1))/90 = 2/15

n*(n-1) = 90*2/15 = 12

n^2 - n = 12

n^2 - n - 12  = 0

This is a quadratic equation, we can find the solutions if we use Bhaskara's formula:

For an equation:

a*x^2  + b*x + c =  0

The two solutions are given by:

x = \frac{-b +- \sqrt{b^2 - 4*a*c} }{2*a}

For our case, the solutions will be:

n = \frac{1 +- \sqrt{(-1)^2 - 4*1*(-12)} }{2*1 } = \frac{1+- 7}{2}

The two solutions are:

n = (1 - 7)/2 = -3    (this solution does not make sense, we can not have a negative number of goats)

The other solution is:

n = (1 + 7)/2 = 4

This solution does make sense, this means that we have 4 male goats.

5 0
2 years ago
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