3 years ago

Can any one help me i really need it

Mathematics

2 answers:

goblinko [34]3 years ago

6 0

Answer:

i got 722.5, Not sure if this is right but it's what I got

Vilka [71]3 years ago

5 0

34 try the app Cymath it’s great for math

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Cable has 24 pennies he has hafe as many nickels as pennies he has 5 more dimes than nickels he has 6 fewer quarters than dimes

Andreyy89

Pennies (P) = 24
Nickels = 1/2P
Dimes = 1/2P + 5
Quarters = (1/2P + 5) -6

Therefore...

Nickels = 1/2P = 1/2(24)= 12
Dimes = 12 + 5 = 17
Quarters = 17 - 6 = 11

6 0

3 years ago

Find value of x and y

marshall27 [118]

Answer:

x = 17 $\sqrt{3}$ , y = 34

Step-by-step explanation:

Since the triangle is right use trig ratios to find x and y

note exact values sin30° = $\frac{1}{2}$ , tan30° = $\frac{1}{\sqrt{3} }$

sin30° = $\frac{opposite}{hypotenuse}$ = $\frac{17}{y}$

multiply both sides by y

y sin30° = 17 ( divide both sides by sin30° )

y = $\frac{17}{\frac{1}{2} }$ = 34

tan30° = $\frac{opposite}{adjacent}$ = $\frac{17}{x}$

multiply both sides by x

x tan30° = 17 ( divide both sides by tan30° )

x = $\frac{17}{\frac{1}{\sqrt{3} } }$ = 17 $\sqrt{3}$

8 0

3 years ago

The coefficient of x in the expansion of the following is (x+3)^3 a) 1 b) 3 c) 18 d) 27 e) 9

VashaNatasha [74]

Answer:

d) 27

Step-by-step explanation:

The expanded form of (a+b)³ is ...

(a +b)³ = a³ +3a²b +3ab² +b³

When we are expanding (x +3)³, the x-term is ...

3(x)(3²) = 27x

The coefficient of x in the expansion is 27.

3 0

3 years ago

Max bought twice the amount of apples that Jenna bought. Together they bought 18 pounds of apples. How many pounds of apples did

Natali5045456 [20]

2x+x=18

Max bought 12 apples and Jenna bought 6

6 0

3 years ago

The value of y is inversely proportional to the value of x. When y=42,x=6. What is the value of y when x=9?

o-na [289]

Y= k/x
When y=42, x=6
42= k/6
k= 42x6
=252
When x=9,
y= 252/9
= 28

7 0

3 years ago