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3 years ago

Henry's wage is £450 per week.

Mathematics

1 answer:

marishachu [46]3 years ago

4 0

Answer:

He saves £135 each week

Step-by-step explanation:

He spends 2/5 of his wage on food

2/5x450=£180

He spends 180£ on food each week

30% of 450 is 135 which he spends on house holdbills. thus, he pays £135 on bills

so his total expenditure is 135+180= £315

he saves the rest which is £135.

thus, your answer is £135

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Completely factor 7x^2 - 4x - 3

kondor19780726 [428]

Answer:

(7x+3) (x-1)

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Step-by-step explanation:

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3 years ago

a satellite's escape velocity is 6.5 mi/sec, the radius of the earth is 3960 mi, and the earth's gravitational constant is 32.2

Artyom0805 [142]

Answer:

$23.89x10^{6}$ ft

Step-by-step explanation:

$\frac{V^{2} }{R^{2} } = \frac{2g}{R+h} \\$ This is the formula to find satellite's escape velocity V , where R is earth's radius, h is the satellite's height from the earth surface and g is the earth's gravitational constant.

$R^{2}(R+h) \frac{V^{2} }{R^{2} } =R^{2} (R+h)\frac{2g}{R+h}$ (Multiplying to clear the fractions)

(R+h) $V^{2} =R^{2} 2g$

$R+h=\frac{2R^{2}g }{V^{2} }$

$h= \frac{2R^{2} g}{V^{2} } -R$

Now, we can determine height of satellite from the surface of the earth

by putting the values in above equation

$h= \frac{2 * (3960)^{2}*32.2 }{6.5^{2} } -3960\\h= 23.902 x10^{6} - 3960\\ h=23.89x10^{6} ft$

5 0

3 years ago

which expression have a value of 16/81? check all that apply. (2/3)^4, (16/3)^4, (4/81)^2, and (4/9)^2

notka56 [123]

$Use\ \left(\dfrac{a}{b}\right)^n=\dfrac{a^n}{b^n}\\\\\left(\dfrac{2}{3}\right)^4=\dfrac{2^4}{3^4}=\dfrac{16}{81}\ :)\\\\\left(\dfrac{16}{3}\right)^4=\dfrac{16^4}{3^4}=\dfrac{16^4}{81}\neq\dfrac{16}{81}\ :(\\\\\left(\dfrac{4}{81}\right)^2=\dfrac{4^2}{81^2}=\dfrac{16}{81^2}\neq\dfrac{16}{81}\ :(\\\\\left(\dfrac{4}{9}\right)^2=\dfrac{4^2}{9^2}=\dfrac{16}{81}\ :)$

6 0

3 years ago

Read 2 more answers

Together, teamates Pedro and Ricky got 2685 base hits last season. Pedro had 281 more hits than Ricky. How many hits did each pl

Alenkasestr [34]

All we need to do it subtract 281 from 2685 and divide that number by 2 to find out how many base hits Ricky made.
2685 - 281 = 2404
2404/2 = 1202
So Ricky made 1202 base hits
To find out how many Pedro made, just add 281 to Ricky's number and you have your answer
1202 + 281 = 1483
Hope that helps! :)

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3 years ago

Segment ab and segment bc are tangent to circle<br> d. find x if ab = 5x + 11 and bc = 3x + 25.

nadya68 [22]

A 5x/b +11/b and b=3x/c+25/c

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3 years ago