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3 years ago

What is the domain of the function f(x) = sqrt x-9 + 5?

Mathematics

1 answer:

klemol [59]3 years ago

8 0

Answer:

D. x≥ 9

Step-by-step explanation:

√x-9 should be ≥ 0

so, x-9≥0

=> x ≥ 9

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The school band is selling items to raise $9,500 for a trip. For each item sold, the band's profit is a percent of the sellin

Finger [1]

The goal amount of the student groups are given in percentages, which are fractions based on one hundred.

The flutist raised more money than the trumpeters

The difference in the amounts the student raised is $256.5

Reasons:

The amount the school band is raising for the trip = $9,500

Goal of the flutist = To raise 18% of the total amount

Goal of the trumpeters = 85% of the flutist's goal

Required:

The group that raise more money, given that their goals are met

Solution:

Given that the goal of the trumpeters trumpeters is 85% of the goal of the flutist, the flutist raised more money.

Required:

The difference in the amount raised by the students

Solution:

The amount raised by the flutist = 18% of $9,500 = 0.18 × $9,500 = $1,710

Amount the trumpeters raised = 85% of $1,710 = 0.85 × $1,710 = $1,453.5

The difference in the amount raised = $1,710 - $1,453.5 = $256.5

Learn more about percentages here:

brainly.com/question/1367867

7 0

3 years ago

A digital thermometer costs $599.99. The company offers a $200 rebate. What percent of the cost is

kompoz [17]

Answer:

33.33%

Step-by-step explanation:

600/3 is 200 which means 1/3 of it is rebated

8 0

3 years ago

Joe has $200 in his savings account and is depositing $50 per month. Kathy has $50 in her account and is depositing $75 per mont

Dima020 [189]

In 6 months, they will have same amount of money.

Step-by-step explanation:

Let,

x be the number of months

Given,

Joe's savings = $200

Per month deposit = $50

J(x)=200+50x Eqn 1

Kathy savings = $50

Per month deposit = $75

K(x)=50+75x Eqn 2

For same amount;

J(x)=K(x)

$200+50x=50+75x\\50x-75x=50-200\\-25x=-150$

Dividing both sides by -25;

$\frac{-25x}{-25}=\frac{-150}{-25}\\x=6$

In 6 months, they will have same amount of money.

Keywords: functions, division

Learn more about division at:

#LearnwithBrainly

5 0

4 years ago

Ella has 0.5 lbs of sugar. How much water should she add to make the following concentrations? Tell Ella how much syrup she will

Angelina_Jolie [31]

I'm guessing the % of syrup refers to the % of sugar it has, therefore:

20% = 20 / 100 = 0.2

0.2 * x = 0.5

x = 0.5/0.2

x = 2.5

She will have 2.5 lbs of syrup

4 0

4 years ago

Solve the equation: 2tanx+cosx-2=0

zavuch27 [327]

I wanna help u but i dont get the question

is 2sinx+cosx-2=0
or 2tanx+cosx-2=0 ?

8 0

3 years ago