Answer:
i believe that 25 ounces of jelly for 3.39$ is better to buy
:)
Answer:
1. d. x-intercept is -4; y-intercept is 8.
2.d. x-intercept is 16; y-intercept is 20
3. b. -x+6y=24
4. a. 4.75k+2.25p=22
Step-by-step explanation:
1. -10x+5y=40
to find the y intercept let x =0
5y = 40
divide by 5
y = 40/5 = 8
to find the x intercept let y =0
-10x = 40
divide by -10
x = 40/-10
x=-4
2. 5x+4y=80
to find the y intercept let x =0
4y = 80
divide by 4
y = 80/4 = 20
to find the x intercept let y =0
5x = 80
divide by 5
x = 80/5
x=16
3. Write y=1/6x+4 in standard form using integers.
Ax+by =c
multiply each side by 6
6y = 6* (1/6 x + 4)
6y = x+24
subtract x from each side
-x+6y = x-x+24
-x +6y = 24
4. lbs of kumquats * price/per + lbs of pears * price/lb =22
k * 4.75 + p * 2.25 =22
4.75k + 2.75p = 22
Answers:
(a) BC = 40
(b) GF = 15
(c) CD = 45
(d) KM = 37.5
=========================================================
Explanations:
Part (a)
GF is a midsegment of triangle ABC, so GF is half that of the parallel base AC
AC = 30 so GF = (1/2)*AC = 0.5*30 = 15
--------------------------
Part (b)
For similar reasons as part (a), FB if half that of BC. This leads to FB = FC
FB = FC
FC = 20
since FB = 20
Now use the segment addition postulate
BC = BF + FC
BC = 20 + 20
BC = 40
Note: FB is the same as BF. The order of the letters does not matter.
--------------------------
Part (c)
GF = AD are the same length because of the single tickmark
GF = 15 so AD = 15
use the segment addition postulate
CD = CA + AD
CD = 30 + 15
CD = 45
--------------------------
Part (d)
EG = 15 since GF = 15 (and EG = GF by the single tickmark)
use the segment addition postulate
EF = EG + GF
EF = 15 + 15
EF = 30
The length of KM is the average of the base lengths EF and DC, since KM is a midsegment of the trapezoid
KM = (EF+DC)/2
KM = (30+45)/2
KM = (75)/2
KM = 37.5