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3 years ago

A train traveled 31.2 miles in 52 minutes. at this rate how far will it travel in 60 minutes

1 answer:

Taya2010 [7]3 years ago

8 0

It'll be 36 miles in 60 min becuse
31.2 divided by 54 =0.6
but we want to know how many miles in 60 min so
you multiply 60 times 0.6 =36

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What is the following quotient? sqrt6+sqrt11/sqrt5+sqrt3

Gnoma [55]

Answer:

√30-√18+√55-√33/2

Step-by-step explanation:

What is the following quotient? sqrt6+sqrt11/sqrt5+sqrt3

Given the expression

√6+√11/√5+√3

Rationalize

√6+√11/√5+√3 × √5-√3/√5-√3

= √30-√18+√55-√33/√25-√9

= √30-√18+√55-√33 /5-3

= √30-√18+√55-√33/2

This gives the required quotient

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3 years ago

(x2+x)(x2-2x-3) is equal to?

PtichkaEL [24]

Answer:

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Step-by-step explanation

Use the FOIL Method or factor.

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2 years ago

AB has coordinates A(-5,9) and B(7,- 7). Points P, Q, and I are collinear

VMariaS [17]

Answer:

$\overline{QT}$

Step-by-step explanation:

We want to find the coordinates of a certain point C(x,y) such that C divides $A(x_1,y_1)$ and $B(x_2,y_2)$ in the ratio m:n=3:2

The x-coordinate is given by:

$x=\frac{mx_2+nx_1}{m+n}$

The y-coordinate is given by:

$y=\frac{my_2+ny_1}{m+n}$

AB has coordinates A(-5,9) and B(7,- 7)

We substitute the values to get:

$x=\frac{3*7+2*-5}{3+2}$

$x=\frac{21-10}{5}$

$x=\frac{11}{5}$

and

$y=\frac{3*-7+2*9}{3+2}$

$y=\frac{-21+18}{5}$

$y=-\frac{3}{5}$

Therefore C has coordinates $(\frac{11}{5},-\frac{3}{5})$

The line segment that contains C is $\overline{QT}$

See attachment.

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2 years ago

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Im not sure but I think the answer is 9.4cm2

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3 years ago

Geometry help please. See photo.

mart [117]

Sorry I am not that good with geometry l

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2 years ago