Someone help me with these ques please -4(2x-6) 7(9x+4) 3(-5x-7 1/2(8x+10)

Mathematics

1 answer:

BaLLatris [955]3 years ago

3 0

Answer:

-8x+24

63x+28

-15x-21

4x+5

Step-by-step explanation: ._.

You might be interested in

a carpet cost $15 per square foot. ( When calculating the price, any fraction of a square foot is counting as a whole square foo

gregori [183]

300 dollars, 15x20 because they count any fraction as a foot, so is like you are going to buy 20 foot of carpet.

5 0

3 years ago

What does X = In question 2

OverLord2011 [107]

Answer:

Step-by-step explanation:

10/5=2/1 or 2

4+2=6

6 0

2 years ago

If sin θ=4/5 and 90°<θ<180°, what is cos θ?

34kurt

Answer:

Cos ∅ = 3/5

BUT COSINE IS NEGATIVE IN THE SECOND QUADRANT.

Thus cos∅= -3/5

7 0

3 years ago

Which pyramids with base area B and height h have equal volumes?

Pachacha [2.7K]

Option A:

V = 1/3 * b^2 * h

V = 1/3 * 10.5^2 * 6

V = 1/3 * 110.25 * 6

V = 220.5

Option B:

V = 1/3 * b^2 * h

V = 1/3 * 3.6^2 * 8

V = 1/3 * 12.96 * 8

V = 34.56

Option C:

V = 1/3 * b^2 * h

V = 1/3 * 4.2^2 * 12

V = 1/3 * 17.64 * 12

V = 70.56

Option D:

V = 1/3 * b^2 * h

V = 1/3 * 6^2 * 8.4

V = 1/3 * 36 * 8.4

V = 100.8

I guess it's 'None of the Above'

3 0

3 years ago

sonja wants to have $14000 in 13 years. calculate how much she should invest now at 6% interest, compounded semiannually in orde

mariarad [96]

She should invest $6491.73.

The equation we use to solve this is in the form
$A=p(1+\frac{r}{n})^{nt}$ ,
where A is the total amount in the account, p is the principal invested, r is the interest rate as a decimal, n is the number of times per year the interest is compounded, and t is the amount of time.

A in our problem is 14000.
p is unknown.
r is 6% = 6/100 = 0.06.
n is 2, since it is compounded semiannually.
t is 13.

$14000=p(1+\frac{0.06}{2})^{13*2}
\\
\\14000=p(1+0.03)^{26}
\\
\\14000=p(1.03)^{26}
\\
\\\text{Dividing both sides by }1.03^{26}\text{, we have}
\\
\\\frac{14000}{1.03^{26}}=\frac{p(1.03)^{26}}{1.03^{26}}
\\
\\6491.73\approx p$

5 0

3 years ago