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jekas [21]
3 years ago
7

A family has two cars during one particular week the first car consumed 25 gallons of gas and the second consumed 40 gallons of

gas the two cars drove a combined of 1700 miles and the sim of their fuel efficiencies was 50 miles per gallon what were the fuel efficiencies of each of the cars that week ?
Mathematics
1 answer:
Ede4ka [16]3 years ago
8 0

Answer:

56

Step-by-step explanation:

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A potato launcher uses a spring that can apply a force of 20N to potato’s. He launches a 100 gram potato, what is the accelerati
shepuryov [24]

Answer:

200 m s^-2.

133.33 ms^-2.

100 m s^-2.

Step-by-step explanation:

Use Newton's Second Law of motion:

Force = mass * acceleration

The force is in Newtons so the mass must be in kilograms#

100 g = 0.1 kg. So:

20 = 0.1 * a

a = 20/ 0.1 = 200 m s^-2.

We calculate the acceleration for  the 150g and 200g potato in the same way.

3 0
3 years ago
HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHEEEEEEEEEEEEEEEEEEEEEEELLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP!
11Alexandr11 [23.1K]

Answer:

Hey!

Your answer should be

Step-by-step explanation:

To find the BASE: 8 x 4 = 32cm^2

To find the angled TOP FACE: 10 x 4 = 40 cm^2

To find the TRIANGLES: (6x8)/2 x 2 = 48 cm^2

To find the REAR FACE: 6 x 4 = 24 cm^2

TOTAL: 32 + 40 + 48 + 24

SUFACE AREA: 144cm^2

Hope this helps!

7 0
3 years ago
1a. Given that P = (5,4), Q = (7,3), R = (8,6), and S = (4,1), find the component form of the vector PQ + 3RS.
Kryger [21]
1a. A
1b. D
2a. C
2b. B
3a. C
3b. B
6 0
4 years ago
Read 2 more answers
The equation of a circle is . x2 + y2 + Cx + Dy + E = 0. If the radius of the circle is decreased without changing the coordinat
Neporo4naja [7]
To determine the effect of the radius changes to the coefficients, we need to rewrite the form of the equation into:

(x−α)²+(y−β)²=r² 
From the equation, we will see that:

C=−α∗2
D=−β∗2
and α²+β²−r²=E
where r represents the radius of the circle and α,βare the coordinate of the center of the circle.

Therefore, when the r decreases the coefficients C and D do not change but E increases.
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6 0
3 years ago
Read 2 more answers
As part of his retirement strategy, John plans to invest $210,000 in two different funds. He projects that the moderately high r
Maslowich

Answer:

Therefore he invested $60,000 at 9% per year and $(210,000-60,000)=$150,000 at 4% per year.

Step-by-step explanation:

Given John plans to invest $210,000 in two different funds. He projects that the moderately high risk investments should return, overtime 9% per year,while low risk investments should return about 4% per year.

He wants a supplemental income of$11,400 a year.

Let , he invested $x at 9% per year and $(210,000-x) at 4% per year.

interest=\frac{prt}{100}   p = principle , r = rate of interest and t = time

The interest earns at 9% per year= \frac{x\times 9\times 1}{100}

The interest earns at 4% per year=\frac{(210,00-x)\times 4 \times 1}{100}

According to the problem,

\frac{x\times 9\times 1}{100}+\frac{(210,00-x)\times 4 \times 1}{100}= 11400

\Leftrightarrow 9x+840000-4x=11400 \times 100

\Leftrightarrow 5x=1140000-840000

\Leftrightarrow x=\frac{300000}{5}

\Leftrightarrow x=60,000

Therefore he invested $60,000 at 9% per year and $(210,000-60,000)=$150,000 at 4% per year.

7 0
3 years ago
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