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zvonat [6]
3 years ago
14

I need the answer ASAP please

Mathematics
1 answer:
Marrrta [24]3 years ago
6 0

Answer::I'm sorry i don't know this m

Step-by-step explanation:

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Which of the dollar is the solution set for -3t + 11> 20?
AVprozaik [17]
T <-3 is the answer i hope this helps
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an amusement park ride cannot safely restrain people under 50 in tall or over 78 in tall. write two different inequalities that
Tcecarenko [31]
Y>50
y<78

so since u cant be less that 50 u have to be more and since u cant be taller than 78 u have to be less than 78

now:
y<78 but >50

4 0
3 years ago
Lines a and b are perpendicular. If the slope of line a is 3, what is the slope of line b?
erma4kov [3.2K]

Answer:

\large\boxed{D.\ -\dfrac{1}{3}}

Step-by-step explanation:

\text{Let}\ k:y=m_1x+b_1\ \text{and}\ l:y=m_2x+b_2,\ \text{then}\\\\l\ ||\ k\iff m_2=m_1\\\\l\ \perp\ k\iff m_1m_2=-1\to m_2=-\dfrac{1}{m_1}\\-------------------\\\\\text{We have the slope of given line a:}\ m_1=3.\ \text{Therefore the slope of a line b}\\\text{perpendicular to a is: }\\\\m_2=-\dfrac{1}{m_1}\to m_2=-\dfrac{1}{3}

3 0
3 years ago
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A family has two cars. During one particular week, the first car consumed 20 gallons of gas and the second consumed 15 gallons o
OleMash [197]

Answer: the fuel efficiency of the first car is 20 miles per gallon.

the fuel efficiency of the second car is 15 miles per gallon.

Step-by-step explanation:

Let x represent the number of miles per gallon of the first car.

Let y represent the number of miles per gallon of the second car.

During one particular week, the first car consumed 20 gallons of gas and the second consumed 15 gallons of gas. The two cars drove a combined total of 625 miles. It means that

20x + 15y = 625- - - - - - - - - - 1

The sum of their fuel efficiencies was 35 miles per gallon. It means that

x + y = 35

Substituting x = 35 - y into equation 1, it becomes

20(35 - y) + 15y = 625

700 - 20y + 15y = 625

- 20y + 15y = 625 - 700

- 5y = - 75

y = - 75/ - 5

y = 15

x = 35 - y = 35 - 15

x = 20

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3 years ago
Naomi invested $920 in an account paying an interest rate of 4.7% compounded continuously. Assuming no deposits or withdrawals a
expeople1 [14]

Answer: 9 years

Step-by-step explanation:

4 0
3 years ago
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