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umka2103 [35]
3 years ago
14

Help me out with this problem ?​

Mathematics
1 answer:
3241004551 [841]3 years ago
4 0

Answer:

(-4.5, 2.5)

Step-by-step explanation:

The solution for two graphed linear equations is the intersection (The point where two lines meet or cross).

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The height of a triangle is 7 m less than its base. The area of the triangle is 30 m².
Andrej [43]

Answer:

Base 12m Height 5m

Step-by-step explanation:

Area of a triangle formula A=1/2bh

30=1/2(x)(x-7)

2*30 = 1/2(x)(x-7)*2

60 = x^2 -7x

60 - x^2 + 7x = 0

-60 + x^2 -7x = 0

x^2 -7x -60 =0

x^2 + 5x -12x -60 = 0

x(x+5)-12x-60=0

x(x+5)-12(x+5)=0

(x+5)*(x-12)=0

x+5=0

x-12=0

x=-5

x-12=0

x=12

The final answer is: x= 12,5

get rid of the -5 because -5 does not make sense at a height so turn it into 5

Base: 12m

Height 5m

6 0
3 years ago
Read 2 more answers
The formulas for power and work are and , where P is the power, W is the work done, t is the time, F is the force, and d is the
vladimir2022 [97]
Power= work/time, work/time=(force x displacement)/time

therefore, power= (Fd)/t
4 0
3 years ago
Read 2 more answers
PLEASE HELP! THIS IS DUE TOMORROW! Much appreciated.
denis23 [38]

Answer:

Step-by-step explanation:

1a) angle x and angle y are corresponding angles. Both angles lie on the same side of the transversal. Since the lines are parallel, the angles are equal.

1b) angle x and angle y are interior angles on the same side of the transversal. Since the lines are parallel, the angles are equal supplementary.

1c) angle x and angle y are corresponding angles. Both angles lie on the same side of the transversal. Since the lines are parallel, the angles are equal.

1d) angle x and angle y are alternate interior angles. They are between the parallel lines and alternate sides of the transversal. Since the lines are parallel, the angles are equal.

3 0
3 years ago
Read 2 more answers
.
jarptica [38.1K]

Answer:

3 gallons

Step-by-step explanation:

Let

x ----> the amount of pure acid (100% solution) in gallons

Remember that

100\%=100/100=1

20\%=20/100=0.20

60\%=60/100=0.60

we know that

(1)(x)+(0.20)(3)=(0.60)(x+3)

solve for x

x+0.60=0.60x+1.80

x-0.60x=1.80-0.60\\0.40x=1.20\\x=3\ gal

therefore

3 gallons of pure acid should be mixed with 3 gallons of a 20% acid solution in  order to get a 60% acid solution

7 0
3 years ago
Abigail jogged 10.6 miles in 2.5 hours. What is her jogging speed in miles per hour? A. 4.32 miles/hour B. 4 miles/hour C. 4.24
Lelechka [254]

do miles/hour =

10.6 miles/2.5 hours =

10.6/2.5 =

4.24 miles/hour


5 0
3 years ago
Read 2 more answers
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