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Alenkasestr [34]
2 years ago
10

When x = 4 and y = 3, find the value of:

Mathematics
1 answer:
vichka [17]2 years ago
8 0

Answer:

a-8x+21y-10=19

b-3(x-6y)=6

c-(15-12)=4

Step-by-step explanation:

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the cost of a school banquet is $95 plus $15 for each person attending. write an equation that gives total cost as a function of
AleksandrR [38]

Im sorry if I misunderstood the problem but heres my take.

Answer:

1155 for the cost of the people and 1250 for the total including the $95

Step-by-step explanation:

Multiply it ( 77 x 15 )

then add the answer to the $95 ( 95 + N )

= $N

8 0
3 years ago
Which names are other correct names for CK<br><br> Choose all answers that are correct
PilotLPTM [1.2K]
The second and third one
7 0
3 years ago
The gas mileage for a certain vehicle can be approximated by m=−0.05x2+3.5x−49, where x is the speed of the vehicle in mph. Dete
Whitepunk [10]

Answer:

<h2>14mph</h2>

Step-by-step explanation:

Given the gas mileage for a certain vehicle modeled by the equation m=−0.05x²+3.5x−49 where x is the speed of the vehicle in mph. In order to determine the speed(s) at which the car gets 9 mpg, we will substitute the value of m = 9 into the modeled equation and calculate x as shown;

m = −0.05x²+3.5x−49

when m= 9

9 = −0.05x²+3.5x−49

−0.05x²+3.5x−49 = 9

0.05x²-3.5x+49 = -9

Multiplying through by 100

5x²+350x−4900 = 900

Dividing through by 5;

x²+70x−980 = 180

x²+70x−980 - 180 = 0

x²+70x−1160 = 0

Using the general formula to get x;

a = 1, b = 70, c = -1160

x = -70±√70²-4(1)(-1160)/2

x = -70±√4900+4640)/2

x = -70±(√4900+4640)/2

x = -70±√9540/2

x =  -70±97.7/2

x = -70+97.7/2

x = 27.7/2

x = 13.85mph

x ≈ 14 mph

Hence, the speed(s) at which the car gets 9 mpg to the nearest mph is 14mph

4 0
2 years ago
Juana tiene en su cuenta bancaria $98.857. Si expide un cheque por $39.948 y deposita otro por $10.845 ¿Cuánto dinero le queda a
Sonja [21]

Answer:

um could you transkate to english so i can answer your question?

Step-by-step explanation:

5 0
2 years ago
I’m confused on this one
Luda [366]

LO = MN because LMNO is the isosceles trapezod

so <LON = <ONM = 100

Answer

<LON = 100 degrees

5 0
3 years ago
Read 2 more answers
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