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3 years ago

PLEASE HELP ASAP

Mathematics

1 answer:

maria [59]3 years ago

8 0

Answer:

y = (-1/2)x-9

Step-by-step explanation:

the slope is -1/2 and the y-intercept is -9 plug that into y=mx+b is y = (-1/2)x-9.

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Rico lives in Michigan, which has a sales tax of 6%. He just bought some

stepladder [879]

Answer:

D. $150.80

Step-by-step explanation:

We have been given that Rico lives in Michigan, which has a sales tax of 6%. He just bought some water skis, whose full price was $180, but he presented the retailer with a coupon for $40, which the retailer accepted.

The total amount paid by Rico for the ski would be cost of ski plus sales tax minus coupon amount.

$\text{Total amount paid by Rico}=(\$180+\$180\times \frac{6}{100})-\$40$

$\text{Total amount paid by Rico}=(\$180+\$180\times 0.06)-\$40$

$\text{Total amount paid by Rico}=(\$180+\$10.80)-\$40$

$\text{Total amount paid by Rico}=\$180.80-\$40$

$\text{Total amount paid by Rico}=\$150.80$

Therefore, Rico paid $150.80 for the ski and option D is the correct choice.

5 0

3 years ago

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Oliver hits a baseball at 3 feet above the ground with an initial speed of 135ft/sec at an angle of 20 degrees with the horizont

Serhud [2]

Answer:

Option B) the ball lands in front of the wall

Explanation:

1. Find the vertical and horizontal components of the initial velocity

a) Horizontal component:

$v_{0,x}=v_0\times cos(20\º)=135ft/s\times cos(20\º)=126.86ft/s$

b) Vertical component:

$v_{0,y}=v_0\times sin(20\º)=135ft/s\times sin(20\º)=46.17ft/s$

2. Find the time when the ball runs 380 feet horizontally:

$x=v_{0,x}\times t\\\\380ft=126.86ft/s\times t$

$t= (380ft)/(126.86ft/s)=2.995s\approx 3.0s$

3. Find the height of the ball when the time is 3.0s

$y=y_0+v_{0,y}\times t-gt^2/2$

y₀ = 3 ft
g ≈ 32.174 ft/s²

$y=3ft+46.17ft/s\times 3.0s-32.174ft/s^2\times (3.0s)^2/2$

$y=-3.3ft$

This result means that the ball does not reach the wall because it has fallen to the ground (when y = 0) before 3.0s.

5 0

3 years ago

Which of the following is true when comparing the following numbers on a horizontal number line?

zalisa [80]

The second one, 2.75 is to left of 3 on the numberline and it is less than 3

4 0

3 years ago

The answer to x2+5x+6=0 is ?

Sliva [168]

Answer:

-6/7

Step-by-step explanation:

x2+5x+6=0

7x+6= 0

-6 -6

7x= -6

/7 /7

x= -6/7 or -0.85714285714

8 0

4 years ago

"h varies directly as u". If h = 8 when u = 40, find u when h = 25.

erastova [34]

Answer:

125

Step-by-step explanation:

h=8

u=40

so k=5

hk-u

5*25=125

7 0

3 years ago

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