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3 years ago

If you answer this you are my hero and good things will happen to you.

2 answers:

8 0

Which is bigger 6.6 or 0.78 ?
6.6 is bigger
===================
x^2 - x......when x = 2
2^2 - 2 =
4 - 2 =
2 <==
====================
A = bh
60 = 10h
60/10 = h
6 = h....so height is 6 m
====================
900 decreased by 5% =
900 - 0.05(900) = 900 - 45 = 855 <==
=====================
2(x + 3) = 8
2x + 6 = 8
2x = 8 - 6
2x = 2
x = 2/2
x = 1 <==
=======================
360 in a ratio of 1 to 4.....

1:4......added = 5

1/5(360) = 360/5 = 72
4/5(360) = 1440/5 = 288

ratio is 72:288
=======================
3,8,13,16,23.....this is an arithmetic sequence with a common difference of 5

the nth term : an = a1 + (n - 1)d
an = 3 + 5(n-1) <===
======================
are there decimals in this problem......because the angles of a quadrilateral , when added = 360 degrees
======================
75% = 66....what is full cost...
75% of what is 66..
0.75x = 66
x = 66 / 0.75
x = 88 <==
=====================
y = 4x - 1...when x = -2
y = 4(-2) - 1
y = -8 - 1
y = -9 <==
======================
6.5 ???? cant see the problem
======================
circumference of circle with radius of 4.....
C = 2(pi)r
C = 2(3.14)(4)
C = 25.12 cm <== or C = 8*(pi)
=====================
6 km / h for 2 hrs 20 min...

6 / 60 = 0.1 km per minute......0.1(140) = 14 km <==
=====================
to increase an amount by 4.6%, ur multiplier would be 1.046
=====================
(x - 5)(x + 4) =
x^2 + 4x - 5x - 20 =
x^2 - x - 20 <===
======================
500 increased by 4.6%....
500(1.046) = 523 <==
=======================
2x > 7
x > 7/2 or x > 3.5
======================
500 tickets are sold.....probability of winning first prize (if there is only 1 first prize) is 1/500....dont know how many tickets he bought
======================
6 * 0.6 = 3.6......u simply multiply 6 * 6 = 36....and since 0.6 has a decimal 1 space to the left, in ur answer(36)...move the decimal 1 space to the left giving u 3.6
=======================
5x - 2y....when x = -2, y = -3
5(-2) - 2(-3) =
-10 + 6 =
-4 <==
=======================
0.521 to one significant figure = 0.5
=======================
4,7,13,22,34......
4 to 7 = 3 spaces
7 to 13 = 5 spaces
13 to 22 = 9 spaces
22 to 34 = 12 spaces
I am sorry....I do not know this one..cannot find the pattern
=======================
V= bh
V = 3*10
V = 30
not sure about this...because volume of a prism is base * height....there is o (pi) in the formula.
=====================
7.34 * 4.71 = 34.5714 rounds to 34.57
5.63 + 11.89 = 17.52
====================
y = x^2 + 2x......x = -2
y = -2^2 + 2(-2)
y = 4 - 4
y = 0 <==

timofeeve [1]3 years ago

7 0

6.6. ans. is 2
21. and is

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Simplify the expression left parenthesis (3/5)2

koban [17]

6 because if you multiply (3/5)2 you get 6

8 0

3 years ago

In triangle RST, the measure of angle T=90°, the measure of angle R=82°, and TR=44 feet. Find the length of ST to the nearest te

ludmilkaskok [199]

Answer:

$x=6.183ft$

Step-by-step explanation:

From the question we are told that:

Angel of side $T=90$

Angel of side $R=82$

Length Side $TR=44$

Generally the equation for Angle of side ST $\theta$ is mathematically given by

Since Angle in Triangle =180 therefore

$\theta=180-(90+82)$

$\theta=8$

Therefore Applying sine rule to get Length of ST x

$\frac{x}{sin\theta}=\frac{TR}{sin82}$

$x=\frac{44}{sin82}*sin8$

$x=6.183ft$

3 0

3 years ago

Can you guys pls help me out with 16 and 17

nlexa [21]

Answer:

16. $ 4100

17. y = 10000 - 750x

Step-by-step explanation:

16)

As initial value is $ 5000, and salvage value is $ 500. That means in 5 years value decreased by 5000-500 = 4500 so ,

in 5 year value decreased = 4500

in 1 year value decreased = 4500/5 = 900

so per year 900 $ gets decreased from original price. So equation can be given as

V = 5000 - 900y

where V is value of a vehicle and y is number of year

So after 1 year value would be

V = 5000 - 900 x 1 = 5000 -900 = 4100 $

17)

initial cost of car = $ 10000

per year amount decreases by = $ 750

then equation can be given as

y = 10000 - 750x

where x is number of year and y is cost of car after x year.

8 0

3 years ago

The equation is an example of variation. What is the constant of variation?

Brums [2.3K]

Answer:

Constant of Variation. The constant of variation in a direct variation is the constant (unchanged) ratio of two variable quantities. The formula for direct variation is. y=kx (or y=kx ) where k is the constant of variation .

4 0

3 years ago

Ajar contains 4 red marbles numbered 1 to 4 and 10 blue marbles numbered 1 to 10. A marble is

Reptile [31]

Answer:

a)2/7

b)1/2

c)9/14

d)6/7

Step-by-step explanation:

The jar contains 4 red marbles, numbered 1 to 4 which means

Red marbles = (R1) , (R2) , (R3) , (R4)

It also contains 10 blue marbles numbered 1 to 10 which means

Blue marbles = (B1) , (B2) , (B3) , (B4) , (B5) , (B6) , (B7) , (B8) , (B9) , (B10) .

We can calculate total marbles = 4red +10 blues

=14marbled

Therefore, total marbles= 14

The marbles that has even number = (R2) , (R4) ,(B2) , (B4) , (B6) , (B8) , (B10) =7

Total number of Blue marbles = 10

Blue and even marbles = 5

(a) The marble is red

P(The marble is red)=total number of red marbles/Total number of marbles

=4/14

=2/7

(b) The marble is odd-numbered

Blue marbles with odd number= (B1) , (B3) , (B5) , (B7) , (B9) ,

Red marbles with odd number = (R1) , (R3)

Number of odd numbered =(5+2)=7

P(marble is odd-numbered )= Number of odd numbered/ Total number of marbles

P(marble is odd-numbered )=7/14

=1/2

Total number of red marbles = 14

Number of red and odd marbles = 2

The marbles that has odd number = (R1) , (R3) ,(B1) , (B3) , (B5) , (B7) , (B9) =7

n(red or even )= n(red) + n(odd)- n(red and odd)

=4+7-2

P(red or odd numbered)= (number of red or odd)/(total number of the marble)

= 9/14

(d) The marble is blue or even-numbered?

Number of Blue and even marbles = 5

Total number of Blue marbles = 10

Number of blue that are even= 5

The marbles that has even number = (R2) , (R4) ,(B2) , (B4) , (B6) , (B8) , (B10)

n(Blue or even )= n(Blue) + n(even)- n(Blue and even)

= 10+7-5 =12

Now , the probability the marble is blue or even numbered can be calculated as

P(blue or even numbered)= (number of Blue or even)/(total number of the marble)

= 12/14

= 6/7

6 0

3 years ago