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lora16 [44]
2 years ago
6

Evaluate the expression below when x = 7 and y = 8. 5x2−3y

Mathematics
1 answer:
Ghella [55]2 years ago
5 0

Answer:

221

Step-by-step explanation:

Substitute x = 7 and y = 8 into the expression

5(7)² - 3(8)

= 5(49) - 24

= 245 - 24

= 221

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The soccer team collected $800 at a car wash fundraiser. They charged $5.00 for small vehicles and $10.00 for larger vehicles. T
weeeeeb [17]

Answer:

Step-by-step explanation:

5*50 + 10y = 800

250+10y=800

10y=550

y=55

The soccer team collected $800 at a car wash fundraiser. They charged $5.00 for small vehicles and $10.00 for larger vehicles. The amount collected can be modeled by the equation 5x + 10y = 800, where x represents the number of small vehicles and y represents the number of larger vehicles. If the number of larger vehicles washed was 50, how many small vehicles were washed in total? 60. The soccer team collected $800 at a car wash fundraiser. They charged $5.00 for small vehicles and $10.00 for larger vehicles.

The amount collected can be modeled by the equation 5x + 10y = 800, where x represents the number of small vehicles  and y represents the number of larger vehicles. If the number of larger vehicles washed was 50, how many small vehicles were washed in total?

~~~~~~~~~~~~~~~~~~~~~~

5x + 10y = 800  and  y = 50  ====>

5x + 10*50 = 800  ====>  5x + 500 = 800  ====>  5x = 800-500 = 300  ====>  x = 300%2F5 = 60

6 0
3 years ago
A student's bank account is represented in the table shown.
melomori [17]

The desmos link is in the reply section below...

1.) y = 1.56x + 1.29

2.) the slope is 1.56

As the weeks are increasing, the student's balance is growing about 1.56 per week.

3.) y = 24.69

4.) 50 = 1.56x + 1.29

50 - 1.29 = 1.56x + 1.29 - 1.29

48.71 =1.56x

48.71 / 1.56

31.2

8 0
2 years ago
Log4(3^-5)=x<br> solve for x
andrew-mc [135]

Answer:

.0024776131

Step-by-step explanation:

type it into a TI-84 and remember than any negative exponent turns the number into a fraction

3 0
3 years ago
In the week that ended on January 4, there were 24 cases of flu reported in a city’s hospital. In the 5 weeks that followed, the
Fittoniya [83]

Each week, there are 24+12x more new instances recorded than there was the previous week which is increasing exponentially.

There were 24 cases of flu reported in a city's hospital on January 4.

In the next 5 weeks, the number of new cases reported each week had grown exponentially.

Let "A" represent the number of flu cases at time "t." Any population "A" grows exponentially over time at a rate of "t." The beginning population directly affects the rate of population change.

dA/dt = k( T - 24 )

T- 24 = c × e^{kt}     [Differentiate with 't']

T = 24 + c × e^{kt}

After 1 week T = 36 and t = 1

36 - 24 = c × 1

c = 12

T = 24 + 12x.

Therefore, 24 + 12x new instances have been reported each week, increasing exponentially.

Learn more about the exponential rate of change here:

brainly.com/question/11845213

#SPJ1

6 0
1 year ago
A landscape designer has a drawing of a flower bed that measures 6inches by 9 inches. The owner wants the actual flower bed to b
Elza [17]
1.5 feet ok !!!!!!!!
4 0
3 years ago
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