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3 years ago

Subtract 9/y - 1/4 having a hard time solving

2 answers:

6 0

Find your common denominator

which is 4y so multiply 4y to both fractions which means top and bottom

your final answer is
36 -y
------
4y

PolarNik [594]3 years ago

6 0

(9x4)/4y - 1y/4y= (36-y)/4y

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10<br> Using the quadratic formula to solve x2 = 5 – X, what are the values of x?

loris [4]

x^2 = 5 - x

x^2 + x - 5 = 0

-1 +/- $\frac{ \sqrt{ {1}^{2} - 4(1 \times - 5) } }{2}$

x = (1 + √21) / 2

x = (1 - √21) / 2

6 0

3 years ago

Help due soon plss!!!!

Gelneren [198K]

Answer:

Cube=150cm^2

Triangular Prism=228ft^2

Step-by-step explanation:

Cube

$A=6a^2=6*5^2=150cm^2$

Triangular prism

Using these formulas

$A=2A_{B}+(a+b+c)h\\A_{B} =\sqrt{s(s*a)(s*b)(s*c)} \\s=\frac{a+b+c}{2}$

Solving for A

$A=ah+bh+ch+\frac{1}{2} \sqrt{-a^4+2(ab)^2+2(ac)^2-b^4+2(bc)^2-c^4} \\=6.5*11+5*11+6.5*11+\frac{1}{2} *\sqrt{-6.5^4+2*(6.5*5)^2+2*(6.5*6.5)^2-5^4+2*(5*6.5)^2-6.5^4} \\=228ft^2$

5 0

3 years ago

The regular price of a child's entry ticket to a water park is $8 less than that for an adult's. The park offers half off all en

inessss [21]

Answer:

Step-by-step explanation:

so first the equation for the situation has been given which is

194=1/2x + 2x - 16

now you can just solve since it's a linear equation

194=2.5x -16

take 16 to the other side to get

210=2.5x

solve to get x (adult price)

which is 84

remember the. child's price is 8 less

84-8=76

4 0

3 years ago

Ben ran for president of his class. If there are 410 students and he received 70% of the vote, how many students voted for Ben?

strojnjashka [21]

Answer:

287

Step-by-step explanation:

70/100*410

(cross out the zeroes then multiply 7 by 41 and you'll get 287)

8 0

3 years ago

Calculate the annual return percentage

xenn [34]

The annual return percentages will be evaluated using the formula:
A=P(1+r/100)^n
where:
A=amount
P=principle
r=rate
n=time

a] A=$500, P=$400, n=1 years
500=400(1+r)^1
solving for r we shall obtain:
1.25=1+r
hence
r=1.25-1
r==0.25
annual rate of investment is 25%

b] A=2500+100=$2600, P=$ 2000, n=1 year
hence
2600=2000(1+r)^1
2600/2000=1+r
1.3=1+r
r=1.3-1
r=0.3
annual rate of investment is 30%

5 0

4 years ago