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True [87]
3 years ago
11

The sum of Al's and Martha's ages is 48. Martha is 10 years older than Al. How old is Martha? Type in your numerical answer only

; do not type any words or letters with your answer
Mathematics
1 answer:
anastassius [24]3 years ago
7 0

Answer:

Martha is 29

Step-by-step explanation:

48=AX+MX+10

-10=-10

38=AX+MX

÷2=÷2

19=X

M(19)+10=29

48=19+29

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You are traveling in a car. Your speed is 40 miles per hour. What is your speed in feet per minute?
Korvikt [17]

Answer:

3520.176 feet per minute

Step-by-step explanation:

First, we must convert 40 miles per hour (mph) to miles per minute (mpm):

40 mph = 40 miles/hour / 60 minutes/hour = 0.6667 miles per minute

Next, we convert miles per minute to feet per minute by multiplying 5280 ft per mile:

0.6667 mpm = 0.6667 miles/minute * 5280 ft/mile = 3520.176 feet per minute

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2 years ago
To visit his grandmother, Michael takes a motorcycle 3.853 kilometers and a horse 3.32 kilometers. In total, the journey takes 5
Marysya12 [62]

3.853 + 3.32 = 7.173 km

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Simplify (x^2 -25)/ (2x^2-7x-15)
murzikaleks [220]

Answer:

\frac{x+5}{2x+3}

Step-by-step explanation:

4 0
3 years ago
I need help asap please:)​
professor190 [17]

Answer:

The answer is -5/24.

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
Csc (2sin^-1(-12/13))<br> that is 2 times inverse sin of -12/13
german
Answer: -\frac{169}{120}

I'm assuming you mean this:

cosec(2sin^{-1}(\frac{-12}{13}))

Recall what the cosecant function represents. It is the reciprocal of a sine function, and is often written in this form:

\frac{1}{sinx}

So, using the sine relationship:

cosec(2sin^{-1}(\frac{-12}{13})) = \frac{1}{sin(2sin^{-1}(\frac{-12}{13}))}

Let u = sin^{-1}(\frac{-12}{13})
cosec(2sin^{-1}(\frac{-12}{13})) = \frac{1}{sin(2u)}
= \frac{1}{2sinu \cdot cosu}
= \frac{1}{2sin(sin^{-1}(\frac{-12}{13})) \cdot cos(sin^{-1}(\frac{-12}{13}))}
= \frac{1}{\frac{-24}{13} \cdot \sqrt{1 - (\frac{-12}{13})^{2}}}
= \frac{1}{\frac{-24}{13}} \cdot \frac{1}{\sqrt{1 - \frac{144}{169}}}
= -\frac{13}{24} \cdot \frac{1}{\sqrt{\frac{25}{169}}}
= -\frac{13}{24} \cdot \frac{1}{\frac{5}{13}}
= -\frac{13}{24} \cdot \frac{13}{5}
= -\frac{169}{120}
3 0
3 years ago
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