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EleoNora [17]
3 years ago
15

Solve: a+1/3+a-1/5=2/15

Mathematics
1 answer:
xeze [42]3 years ago
8 0

Answer:

a=0

Step-by-step explanation:

<u>Step 1:</u>-

Given a+\frac{1}{3} + a - \frac{1}{5} = \frac{2}{15}

on simplification we get,finding l.c.m

2 a + \frac{5-3}{15} =\frac{2}{15}

2 a+\frac{2}{15} = \frac{2}{15}

subtracting \frac{2}{15} on both sides,and cancelled then we get

solution is

2 a=0

a=0

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Find what percent of 570 is 190​
natali 33 [55]

Answer:

190/570

Step-by-step explanation:

190/570

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3 years ago
An object with a starting velocity of 15 m/s accelerates at 3 m/s2. How far does the object travel within 10 seconds?
Anna007 [38]

Answer:  300 m

<u>Step-by-step explanation:</u>

distance(s)=v_it+\dfrac{1}{2}at^2 \quad \text{where}\ v_i \text{is initial velocity, a is acceleration, t is time}

s=(15)(10)+\dfrac{1}{2}(3)(10)^2

  = 150 + 150

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3 years ago
Plz help me, it's urgent​
antiseptic1488 [7]
The answer is this!

6 0
2 years ago
A line has a slope of 9. One of the points on the line is (-2, p). Another point on the line is (2, 2p+1). Determine the value o
igomit [66]

As we travel from (-2, p) to (2, 2p+1), x increases by 4 and y increases by p+1.  Note that -2 + 4 = 2 (which is correct), and that p + (p+1) = 2p+1 (which is also correct).                                                        

                                                                           p+1

Thus, the slope of this line is m = rise / run = -------- = 9

                                                                               4


Then p + 1 = 36, and p = 35.

8 0
2 years ago
The Boston public school district has had difficulty maintaining on-time bus service for its students ("A Year Later, School Bus
erma4kov [3.2K]

Answer:

Step-by-step explanation:

We would set up the hypothesis test. This is a test of a single population mean since we are dealing with mean

For the null hypothesis,

µ = 12

For the alternative hypothesis,

µ < 12

Since the population standard deviation is given, z score would be determined from the normal distribution table. The formula is

z = (x - µ)/(σ/√n)

Where

x = sample mean

µ = population mean

σ = population standard deviation

n = number of samples

From the information given,

µ = 12 minutes

x = 8 minutes

σ = 12 minutes

n = 36

z = (8 - 12)/(12/√36) = - 4/2 = - 2

Test statistic = - 2

6 0
3 years ago
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