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JulsSmile [24]
3 years ago
10

A weather reporter in your area said that the speed of sound in air today is about 1100 ft./s what is the speed in scientific no

tation
Mathematics
1 answer:
ruslelena [56]3 years ago
5 0

Answer:

1.1x10^3

Step-by-step explanation:

You divide by 10 until you get one digit on the left of the decimal, and however many times you divided by ten is the exponent that goes with the 10 in scientific notation.

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Hank has 52 marbles. Divide them into 2 groups so that for every 6 marbles in the first group there are 7 marbles in the second
Vikki [24]

24 marbles in the first group

28 marbles in the second group

8 0
3 years ago
to communication companies offer calling plans with company X it cost $0.35 to connect and then $0.05 for each minute with compa
Mama L [17]

Answer:

X Company charges (0.2+0.01n)\times 10^2 \ cents more than Company Y

Step-by-step explanation:

Given:

Cost of X company = \$ 0.35+(\$0.05\times 1 \ minute)

Cost of Y Company =\$ 0.15+(\$0.04\times 1 \ minute)

for n minutes

Cost of X company for n minutes = \$ 0.35+(\$0.05\times n \ minute)

Cost of Y Company for n minutes =\$ 0.15+(\$0.04\times n \ minute)

Difference for n minutes we get by Subtracting Cost of Y Company for n minutes by Cost of X company for n minutes

Difference for n minutes = (\$ 0.2+\$ 0.01n)=(0.2+0.01n)\times 10^2 \ cents

X Company charges (0.2+0.01n)\times 10^2 \ cents more than Company Y

6 0
3 years ago
Keegan leans an 18-foot ladder against the top of a wall. The bottom of the ladder is 4.5 feet from the base of the wall. What i
zaharov [31]

Answer: C. 17.5 feet

Step-by-step explanation:

The attached photo shows the triangle ABC formed by the ladder and the wall. It is a right angle triangle because one of its angles is 90 degrees. The ladder is the hypotenuse of the triangle. To determine the height of the wall, we would find BC by applying Pythagoras theorem

Hypotenuse^2 = opposite ^2 + adjacent^2

18^2 + 4.5^2 + BC^2

BC^2 = 324 - 20.25 = 303.75

BC = √303.75 = 17.5 feet.

3 0
3 years ago
Please help answer all of the following multi-step equations
Triss [41]

Answer: first one x <-2

second one x>1

third one Use the given functions to set up and simplify

(1-4x)-x.32+4x<-3=(1-4x)-x= -5x+1

fourth one

13/14

Step-by-step explanation:

I can't rlly explain I just do, I hope this helps

8 0
2 years ago
Help me please ❤️❤️❤️❤️
melomori [17]

In a quadratic function, f(x)= ax^2+bx+c the leading coefficient is a, i.e. the coefficient of x^2, and the constant term is c, i.e. the coefficient without any power of x.

So, if you want leading coefficient 2 and constant term -3, your function needs to be like

f(x)=2x^2+bx-3

for any value of b. Among your options:

  • The first is not a quadratic (it starts with x^3)
  • The second has leading term -3 and constant term 2
  • The third is not a quadratic (same as the first)
  • The last is correct.
4 0
3 years ago
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