Two times Noura's age plus 5 years equals Ali's age. Ali is 19 years old. What formula could be used to calculate Noura's age

Answers

Answer 1

Answer:

Answer:

Noura is seven years old

Step-by-step explanation:

to get Noura's age first you need to subtract 5 years from Ali's age which will get you to 14 years of age now you just need to divide 14 by two to get Noura's age which is seven

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You want to rent an unfurnishedone-bedroomapartment for next semester. The mean monthlyrent for a random
sample of 10 apartments advertised in the localnewspaper is $580.
Assume that the standard deviation is$90. Find a 95% confidence
interval for the mean monthly rentfor unfurnished one bedroom
apartments available for rent in thiscommunity.

Answers

Answer: $(\$524.22,\ \$635.78)$

Step-by-step explanation:

Confidence interval for population mean is given by :-

$\overline{x}\pm z^* (\sigma)/(√(n))$

, where $\overline{x}$ = Sample mean

z* = critical z-value.

$\sigma$ = Population standard deviation.

n= Sample size.

Let x be the denotes the monthly rent for unfurnished one bedroom apartments available for rent in this community.

As per given , we have

n= 10

$\overline{x}=\$580$

$\sigma=\$90$

Critical value for 95% confidence : z* = 1.96

So the 95% confidence interval becomes,

$580\pm (1.96) (90)/(√(10))$

$=580\pm (1.96) (90)/(3.162278)$

$=580\pm (1.96)(28.46)$

$=580\pm 55.78$

$=(580-55.78,\ 580+55.78)=(524.22,\ 635.78)$

Hence, a 95% confidence interval for the mean monthly rent for unfurnished one bedroom apartments available for rent in this community= $(\$524.22,\ \$635.78)$

Which equation is the inverse of 2(x – 2)2 = 8(7 + y)?
D.y=+or-sqrt28+4x so the answer is D.

Answers

"The given expression is
2(x - 2)² = 8(7 + y)
Rewrite the expression as follows:
7 + y = (2/8)*(x-2)² = (1/4)*(x-2)²
y = (1/4)(x-2)² - 7

To find the inverse, switch x and y, and solve for y.
x = (1/4)(y-2)² - 7
Multiply through by 4.
4x = (y-2)² - 28
(y-2)² = 4x + 28
y - 2 = √(4x + 28)
y = 2 +/- √(4x + 28)
This expression is the inverse of the given expression.
Therefore the answer is D."

By Dzampo

Answer:

It’s D

Step-by-step explanation:

On edge

The universal set in this diagram is the set of integers from 1 to 15. Place the integers in the correct place in the Venn Diagram.please help, i’ve been stuck on this assignment for almost an hour now and i can’t figure it out..

20 points and branliest!!!

Answers

The integers placed in the correct place in the Venn Diagram is attached

Placing the integers in the correct place in the Venn Diagram.

From the question, we have the following parameters that can be used in our computation:

Set = 1 to 15

From this set of 15 integers, we have the following subsets of numbers

Factors of 15: 1, 3 and 5

Odd Integers: 1, 3, 5, 7, 9, 11, 13 and 15

Multiples of 3: 3, 6, 9, 12 and 15

Also, we have the following intersection sets

Factors of 15 and Multiples of 3: 3

Factors of 15 and Odd Integers: 1, 3, 5

Multiples of 3 and Odd Integers: 3, 9, and 15

All: 3 and 15

None: 2, 4, 8, 10 and 14

The complete Venn diagram is attached

Answers

Her new balance is 886.07 dollars hope this helps

How do you solve the equation 2cos^2 - cosx = 0 for all solutions?

Answers

Answer:

π/2 and π/3

Step-by-step explanation:

Given the equation 2cos²x - cosx = 0, to find the solution to the equation, we will follow the following step.

let P = cosx

The equation becomes 2P²-P = 0

P(2P-1) = 0

P = 0 and 2P-1 = 0

P= 0 and P = 1/2

Since P = cosx

cosx = 0 and cos(x) = 1/2

If cos(x) = 0

x = cos⁻¹0

x = 90⁰

x = π/2

If cos(x) = 1/2

x = cos⁻¹1/2

x = 60⁰

x = π/3

Hence the solutions to the equation are π/2 and π/3.

Cameron bought a used car for $4,500. He made a down payment of $1,200 and agreed to pay the remaining balance in monthly payments of $300 each.Which equation can be used to find m, the number of months it will take Cameron to pay off his car? (7.10A)

F 4,500 = 1,200 + 300m
F 4,500 = 1,200 + 300m

G 4,500 = –300 + 1,200m
G 4,500 = –300 + 1,200m

H 4,500 = 300 + 1,200m
H 4,500 = 300 + 1,200m

J 4,500 = 1,200 – 300m
J 4,500 = 1,200 – 300m