3x + 4y = -2
y = x - 1
3x + 4(x - 1) = -2
3x + 4x - 4 = -2
7x = -2 + 4
7x = 2
x = 2/7
y = x - 1
y = 2/7 - 1
y = 2/7 - 7/7
y = -5/7
solution is : (2/7,-5/7)
1 1/2% of 72= 1.08
1.08 +18=19.08
so oscar has 19.08 books
Answer:
Total time = 1.5 hours
Step-by-step explanation:
Given:
Total distance = 183 miles
Speed = 122 miles per hour
Find:
Total time
Computation:
Total time = Total distance / Speed
Total time = 183 / 122
Total time = 1.5 hours
Answer:
Q1
<1=80°
<2=40°
<3=25°
Q2
<JKM=30.5°
Step-by-step explanation:
Q1
Angles at the centre of a circle standing on an arc measure, such as the way <1 stands on an arc measure of 80°, are equal to that arc measure:
<1=80°
An angle on the curve of a circle standing on an arc, such as <2, is half of an angle standing on the same arc at the centre, such as <1:
<2=0.5(<1)=0.5(80)=40°
The measure of a secant-secant angle, like <3, is one-half the difference of the measures of the intercepted arcs, in this case 30° and 80°.
<3=0.5(80-30)=0.5(50)=25°
Q2
Angles at the centre of a circle standing on an arc measure, are equal to that arc measure. So imagine an angle standing at the centre, sitting on the measure mML - it would equal 187°.
However since an angle on the curve of a circle standing on the same arc as an angle at the centre is half the angle at the centre, we can say that:
<MKL=(0.5)187=93.5
The angles along a straight line add to 180, so
<JKM+93.5+56=180
<JKM=180-149.5=30.5
The answer to the question
