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laiz [17]
3 years ago
13

Calculate -7x + 8 + 9 - 3x if x =9​

Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
6 0

Answer:

-73 is the simplified answer

Step-by-step explanation:

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What is the cost of 12.6 gallons of gasoline if the price per gallon is $1.40?
12345 [234]
If

1 gallon = $1.40
12.6 gallons = $1.40 × 12.6

Plug those into your calculator and you'll get $17.64!
3 0
3 years ago
Read 2 more answers
A chicken weighs t lbs. It needs to be cooked for 20 minutes per lb plus an extra 15 minutes. What is the total cooking time? Is
Nostrana [21]

Answer:

Total cooking time = 20t + 15

The expression 15t + 20 is wrong.

Step-by-step explanation:

weight of chicken = t lbs

cook time per lb = 20 minutes

This means that:

1 lb weight requires a cooking time of 20 minutes

1 lb = 20 minutes

∴ t lbs = 20 × t = 20t minutes.

We were also told that each chicken required an extra cooking time of 15 minutes, in addition to the total cooking time due to the weight. Therefore, the total cooking time is calculated thus:

Total cooking time = cooking time due to weight + 15 minutes

Total cooking time = 20t + 15

Hence the expression 15t + 20 is wrong, due to the explanation given above.

8 0
3 years ago
an ice cream factory makes 190 quarts of ice cream in 5 hours how many quarts could be made in 48 hours?what was the rate per da
GREYUIT [131]

190/5= rate per hour 38

38 (rate per hour)*48 (given hours)= 1824 quarts

38(rate per hour)* 24 (hours in a day)= 912 quarts per day

or

1824(quarts made in two days (48 hours))/2=912 quarts per day

7 0
4 years ago
PLEASE HELP I DON'T UNDERSTAND
OLga [1]
X = the number of months the tire was used
y = the thickness of the tire tread

y = -(3/7)x + 20

Substitute x for 20 (the number of months the tire was used) and solve for y.

The next question: Substitute x for 49 (the number of months the tire was used) and solve for y.


6 0
3 years ago
Using the image below, where would the coordinates of point A be if the triangle was translated by ⟨x−4,y+3⟩?
Dennis_Churaev [7]

Answer:

(-9,4)

Step-by-step explanation:

so we are going to take the original coordinates (-5,1) and to the operation that the question wants us to do (x-4,y+3) by subsitituing the variables in so we get (-5-4,1+3)

Answer: (-9,4)

6 0
2 years ago
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