3 years ago

In the equation below, what is the coefficient of the variable?

Mathematics

1 answer:

qaws [65]3 years ago

7 0

B

but i have to write more to let me post this so here it is

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-8x+3>27 AND -13x+5>57

Svet_ta [14]

For the first one it is -8>24 that statement is false

For the second one it is x>-4

8 0

4 years ago

Kiran starts at 9:00 am by bicycle to reach office. She cycles at the speed of 8 km/hour and reaches the office at 9:15 am. By h

Ivenika [448]

Answer:

v = 12 km/h

Step-by-step explanation:

To find how much she should increase the speed first we need to find the distance traveled:

$d = v*t$

Where:

d: is the distance traveled =?

v: is the velocity = 8 km/h

t: is the time = 15 min (9:00 to 9:15)

$d = v*t = 8 km/h*15 min*\frac{1 h}{60 min} = 2 km$

Now, we can find the speed:

$v_{f} = \frac{d}{t} = \frac{2 km}{10 min*\frac{1 h}{60 min}} = 12 km/h$

Therefore, she should increase the speed to 12 km/h to reach the office at 9:10 am.

I hope it helps you!

6 0

3 years ago

N/5 = 6/7 we have to cross multiply to solve each proportion of solve for n

Y_Kistochka [10]

$\frac{n}{5} = \frac{6}{7}$

n*7=6*5
7n=30

n=30/7 ~4.28

6 0

3 years ago

Use the quadratic function to predict y if x equals 7. Y=2x^2 -3x +3

nordsb [41]

To evaluate the value of y if x=7, given that function is such that y=2x^2-3x+3, we shall have:
f(7)=2(7)^2-3(7)+3
f(7)=2(49)-3(7)+3
f(7)=98-21+3
f(7)=80
Hence we conclude that when x=7, y=80

7 0

3 years ago

Beth traveled for 8 hours and arrived at her destination 480 miles away. How far would Beth have traveled if she had continued o

V125BC [204]

Answer:

She'd have travelled 120 extra miles, 600 miles in total.

Step-by-step explanation:

480 : 8 = 60 --> 60 miles per hour

60 x 10 = 600 --> 600 miles in 10 hours at that speed

600 - 480 = 120 --> extra miles in the extra two hours at that speed

6 0

3 years ago