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Ber [7]
2 years ago
9

Please help :(Solve the qaudratic equation given below(9x + 13)² = 49(9x + 13)² = 49​

Mathematics
1 answer:
NemiM [27]2 years ago
5 0

Answer:

Im pretty sure ur answers would be

x= -32/27 and X=  -46/27

Step-by-step explanation:

So srry if im wrong tho

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two brothers marco and fernando are training for a marathon marco runs at a rate of 6miles per hor. Fernando funs at at a rate o
satela [25.4K]
We know that
speed=distance/time
solve for time
time=distance/speed

in this problem
<span>Marco runs at a rate of 6 miles per hour. 
</span><span>Fernando funs at a rate of 7.2 miles per hour
Difference=7.2-6=1.2 miles/hour
so
speed=1.2 miles/hour
distance=0.3 miles
time=?
</span>time=distance/speed-----> 0.3/1.2-----> 0.25 hour-----> 0.25*60=15 minutes
<span>
the answer is
0.25 hour (15 minutes)

Alternative Method
Let 
x---------> Fernando's distance when Marco is 0.3 miles apart

</span>Fernando funs at a rate of 7.2 miles per hour
<span>for distance =x
time=x/7.2------> equation 1

</span>Marco runs at a rate of 6 miles per hour. 
for distance=x-0.30
time=(x-0.30)/6------> equation 2

equate equation 1 and equation 2
 7.2*(x-0.3)=6x-----> 7.2x-2.16=6x
7.2x-6x=2.16------> x=2.16/1.2-------> x=1.8 miles

time=x/7.2-----1.8/7.2=0.25 hour
6 0
3 years ago
The next train will arrive in 32 minutes and 30 seconds. In how many seconds will the next train arrive
sineoko [7]
You need to multiply the 30 with the 32
4 0
3 years ago
Read 2 more answers
I need help <br> 8 1/4 x 4 1/2 x 6 1/2
Vesnalui [34]

Answer:

241\frac{5}{16}

Step-by-step explanation:

6 0
3 years ago
You have just arrived at summer camp. And your cabin, the counselor has each camper perform the super secret handshake with ever
PSYCHO15rus [73]
Just try to follow my description. When two persons are in the cabin, there is only 1 handshake. When a third person comes, he will have to handshake the two people who came before him. So, there will be 2 handshakes. When a fourth person comes, he would make 3 handshakes with the 3 people who came before him. When the fifth person comes, he would make 4 handshakes with the 4 people who came before him. So, you see there is a pattern. The number of handshakes is 1 less than the total number of people inside the cabin. So, if there are 14 people in the cabin, the last person to come in would have to make 13 handshakes with the 13 people who came in first. Obtaining the sum of all the handshakes starting from the 2 handshakes initially to the 13 handshakes, the sum would be

Total handshakes = 2+3+4+5+6+7+8+9+10+11+12+13
Total handshakes = 90

Therefore, there will be a total of 90 handshakes made within the cabin of 14 people.
8 0
3 years ago
Plzzzzzzzzzzz Helpppppppppppppp
s2008m [1.1K]

Answer:

y = -2x - 6

Step-by-step explanation:

Find the gradient: y difference/x difference

0 - (-6) / -3 - 0

6 / -3

= -2

y = mx + c

-6 = -2 × 0 + c

-6 = c

= C = -6

6 0
3 years ago
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