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3 years ago

I need help on this question

Mathematics

1 answer:

defon3 years ago

3 0

Because the line P is perpendicular to (makes a right angle with) M, it is also perpendicular to L since they are parallel.

The measure of a line is 180 so
180 = 90 + 6y
90 = 6y
15 = y.

For x, the measure of all the angles in a quadrilateral must add to 360. So

360 = 90 + 90 + 100 + x
360 = 280 + x
80 = x

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If M<br> then mABC = [ ? ]

UNO [17]

Answer:

135

Step-by-step explanation:

m(abc)= m(abd) +m(dbc) = 65+60 =135

7 0

3 years ago

I need to figure out how many solutions does the system of equations below have.

Aleonysh [2.5K]

Answer:

The system has one solution.

Step-by-step explanation:

To find the number of solutions of the system, we equal both equations for y.

If we have ax = b, in which both a and b are different of 0, we have one solution.

If both a and b are 0, we have infinite solutions.

If a is 0 and b is not, there are no solutions.

y=6/7x-8 and y=7/9x+10/9

$\frac{6x}{7} - 8 = \frac{7x}{9} + \frac{10}{9}$

$\frac{6x}{7} - \frac{7x}{9} = \frac{10}{9} + 8$

$\frac{54x - 49x}{63} = \frac{10}{9} + \frac{72}{9}$

$\frac{5x}{63} = \frac{82}{9}$

$45x = 63*82$

Both a and b are different of 0, so the system has one solution.

6 0

3 years ago

A barrel of water is full. It decreased by 85%. Now it has 120 liters. How much liters did it have to begin with?

xxMikexx [17]

Answer:

the answer is about 141.18 liters

Step-by-step explanation:

solve this problem by setting up a proportion. 85/100 = 120/x. then solve for x by cross-multiplying. 85x = 120*100. then simplify. x= 2400/17 or 141.18

8 0

4 years ago

52:10

postnew [5]

Answer:

the answer is x>-9, or the second option in your case.

6 0

3 years ago

Find the percent of change from 10 yards to 13 yards

Irina-Kira [14]

10 yards = 100%
13-10=3 yards increase
3/10 =0.3x100=30%
13 yards is an increase of 30% from 10 yards

3 0

3 years ago