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3 years ago

6

For a field trip for students Road in cars and the rest filled nine buses how many students were in each bus it for how to 72 st

udents were on the trip?

1 answer:

jasenka [17]3 years ago

8 0

72 divided by 9 equals 8
72/9=8

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Hi! can someone answer this math problem? its x-7y=-11 ; 5x+2y=-18,,, if so can anyone do it step by step? please and thank you!

Stella [2.4K]

Answer:

X = -4 and Y = 1 (sorry if wrong im only in 6th grade ;(

Step-by-step explanation:

X - 7Y = -11 ......(i)

5X + 2Y = -18 ........(ii)

multiply equation (i) by 5 we get 5X - 35Y = -55 ....(iii)

subtract equation (ii) from (iii)

we get -37Y = -37 ⇒ Y = 1

now put the value of Y from above in equation (i)

we get X = -4

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2 years ago

Find coordinates of the image of the point A(3,9) for a dilation with the scale factor of 2/3

tiny-mole [99]

Answer:

The coordinates of the image of point A(3,9) for dilation with the scale factor of 2/3 will be: A'(2, 6)

Step-by-step explanation:

Given the point A with the vertices (3, 9) i.e. A(3,9)

As we know that If the scale factor is between 0 and 1, the image gets shrunk.

In order to dilation with a scale factor of 2/3, just multiply the x and y coordinates of the original point (3, 9) by 2/3.

i.e.

(x, y) → (2/3 x, 2/3 y)

so, the coordinates of the image of point A(3,9) for dilation with the scale factor of 2/3 will be:

A (x, y) → (2/3 x, 2/3 y) = A (2/3 (3), 2/3 (9)) = A'(2, 6)

Therefore, the coordinates of the image of point A(3,9) for dilation with the scale factor of 2/3 will be: A'(2, 6)

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2 years ago

A food scientist takes a random sample of 25 cereals in order to test the claim that the mean fiber content is less than 2.5 gra

Jlenok [28]

Answer:

Choice A: there is insufficient evidence to conclude that the mean for the fiber content is less than 2.5 gms.

Step-by-step explanation:

From the graphs given the more appropriate is one sample t- test

One sample t- test is used and the results are

Hypothesis Test Fiber

Sample Mean 2.62

Sample St. Dev 3.492

Degrees of Freedom 24

t- test statistic 0.1718

p- value 0.5675

the critical region for this test at ∝= 0.05 is t < -1.711

There is not enough evidence to reject the null hypothesis.

Since the calculated t= 0.1718 does not fall in the critical region the null hypothesis is accepted that the mean fiber content is not less than 2.5 grams.T

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3 years ago

What is the equation for the vertical asymptote of the function shown below? f(x)=3x^4-3/2x-5

levacccp [35]

$f(x)= \frac{3x^4}{2x-5}$

the va's are where x is undefined, or where the denomenator is zero
first simplify if applicable
cannot simplify

set denom to zero
2x-5=0
2x=5
x=2.5

the vertical assemtote is vertical so it is x=2.5 or 5/2

the VA is x=5/2

3 0

3 years ago

there were 630 tickets sold. each ticket cost $21. how much money was raised from selling the .tickets

Orlov [11]

The amount of money made was $13,230.

7 0

3 years ago

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