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2 years ago

Please help me and add steps so that I can understand

Mathematics

1 answer:

kap26 [50]2 years ago

8 0

Answer:

Okay so what you are looking at is a triangle with a cross section. That is line segment PQ.You ae asked to find the length of PN. What you are given is the height(s) of NQ (5 units), QM (2 units) and PL (3 units). You can make an educated guess that line NP equals 4 units. Mainly because those two little arrows on lines LM and PQ (that means that the two lines are parallel). hope it helps...

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The velocity of an automobile starting from rest is given by the equation below, where v is measured in feet per second and t is

podryga [215]

Answer:

(a) $0.408m/sec^2$

(b) $0.134m/sec^2$

Step-by-step explanation:

We have given velocity as function of t $v(t)=\frac{85t}{(8t+14)}$

Acceleration is equation rate if change of velocity with respect to time

So $a=\frac{dv}{dt}=\frac{(8t+14)85-85t\times 8}{(8t+14)^2}$

(a) Acceleration at t = 5 sec

$a=\frac{(8\times 5+14)85-85\times 5\times 8}{(8\times 5+14)^2}=0.408m/sec^2$

(b) Acceleration at t = 10 sec

$a=\frac{(8\times 10+14)85-85\times 10\times 8}{(8\times 10+14)^2}=0.134m/sec^2$

$a=\frac{(8\times 20+14)85-85\times 20\times 8}{(8\times 20+14)^2}=0.039m/sec^2$

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3 years ago

What 4 2/5 as a improper fraction

Neporo4naja [7]

The answer is 22/5

You multiply 5 and 4, which you get twenty, then you add 2 and you get 22. Divide that by 5, and you get 22/5.

To double check, divide 22 by five and you should get 4.4, or 4 2/5 as a fraction

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3 years ago

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What is the equation of a line with a slope of 6 and a y-intercept of -8

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Answer:

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Step-by-step explanation:

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2 years ago

Multiply (7x – 6)(8x +3). A. 56x 2 – 27x – 18 B. 12x 2 – 50x + 8 C. 56x 2 – 18 D. 56x 2 – 69x + 18

mestny [16]

(7x-6)(8x+3)

Use the FOIL method

F: 7x • 8x = 56x^2
O: 7x • 3 = 21x
I: -6 • 8x = -48x
L: -6 • 3 = -18

$56x^{2}+21x-48x-18$

Simplify
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Your answer is A.

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3 years ago