Answer:
-17.5
Step-by-step explanation:
-2.5 times 7
-17.5
Question 7
Which radical expression consists of two perfect squares?
A
V16
B
V25
С
125
D
V21
Answer:
A. √16
Step-by-step explanation:
A perfect square is any number that can be expressed as a product of an integer and itself. i.e. 4 can be represented as 2 × 2. Therefore, 4 is a perfect square.
From the options given, the only radical expression that has two perfect square is √16.
√16 consists of two perfect squares, which are 4 and 4.
4 can be expressed as 2 × 2.
Thus: √16 = √(2 × 2)(2 × 2).
Therefore, √16 consists of two perfect squares.
You work in a hospital, and instructions for an instrument state that it should be cleaned in the
sterilizer for two hours. The sterilizer requires cleaning time be entered in minutes. How many
minutes do you set for the sterilizer?
A. 90
B. 120
C. 180
D. 240
E. 500
Answer:
B
Step-by-step explanation:
120/60=2
2 hours
The time required in minutes to set the sterilizer is 120. The correct option is B.
What is an expression?The mathematical expression is the combination of numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also be used to denote the logical syntax's operation order and other properties.
Given that you work in a hospital, instructions for an instrument state that it should be cleaned in the sterilizer for two hours.
The time in minutes will be calculated as:-
Time = 2 hours
Time = 2 x 60 minutes
Time = 120 minutes
Therefore, the time required in minutes to set the sterilizer is 120. The correct option is B.
To know more about an expression follow
https://brainly.com/question/11096532
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f(2)=3x^2-6x+2
I need help!!!
Answer:
2
Step-by-step explanation:
substitute x by the value in the function, here its f(2) so
3(2)^2 - 6(2)+2
= 12 - 14 = 2
For which equations is 8 a solution. select 4 answers
X+6=2
X+2=10
X-4=4
X-2=10
2x=4
3x=24
X/2=16
X/8=1
Please hurry im timed
Answer:
X/8=1
X-4=4
×+2=10
Step-by-step explanation:
hope this helps :)
The art department is ordering paint supplies for their next project. They have $200 in their budget for paint and brushes. Each paint tube costs $12 and each brush costs $2. If the department buys 27 brushes, what is the most number of paint tubes they can buy?
Answer:
12
Step-by-step explanation:
27 times2 is 54 -200 =146 12 times 12 is 144 and you cant go over 146 for 13 please mark brianly
Ajay left x and y at 9 am.At the same time bala left y and x.After their meeting at a point on the way.Ajay took 16 minutes to reach y and bala took 9 minutes to reach x .Find the meeting time?
Answer:
9:12 amStep-by-step explanation:
Let the time Ajay and Bala took to meet be t, speed of Ajay be a and speed of Bala be b
Until they met, the distance they made:
Ajay ⇒ at Bala ⇒ btNow, the rest of the distance took Ajay 16 min and Bala 9 min.
We can compare the distances as:
16a = bt9b = atFrom the first equation we have:
a/b = t/16From the second equation we have:
a/b = 9/tComparing:
t/16= 9/tt² = 9*16t² = 144t = √144t = 12 minThe meting time is:
9:00 am + 12 min = 9:12 amfind the midpoint of the line segment with the given endpoints (9, -8) (-10, -2)
Answer:
mid point=(-1/2,-5)
Step-by-step explanation:
Do not really understand this question anybody help ?
pls answer these as quick as possible
Answer:
what are we suppost to answer??
Step-by-step explanation:
HELPPPPP please it’s a test❗️
Answer:
the right answer is 4/3
Answer:
Scale factor increase of 4/3
Step-by-step explanation:
Look at one side and see how many units it increased from the original. Like 3 to 4units.
What is the slope and equation of a line perpendicular to the y-axis passing through point (–5, –3)?
Answer:
Slope: m = 0
Equation: y = -3
Step-by-step explanation:
A line perpendicular to the y-axis always has a slope of 0. Slope is calculated by (y2-y1)/(x2-x1) or rise/run or delta y/delta x (they're all the same thing, delta means difference and is notated with a triangle). When there is no change in y (perpendicular to the y-axis), no matter what the change in x is, the slope will be 0.
Since it is given that one of the points has a y-value of -3, the equation for this line would be y = -3. The formula for a linear equation is y=mx+b. Since the slope is 0, the value of mx is 0, and therefore not needed in the equation. b represents the y-intercept and in this case would be -3.
Desmond follows a recipe that uses 4 cups of flour for each pizza crust he makes. If he makes 16 pizza crusts, how many cups of flour does he use?
Answer:
64 cups of flour
Step-by-step explanation:
Each crust uses 4 cups of flour.
So, 16 crusts uses 64 cups of flour. (16x4)
The dolphin dives 20 feet below the surface of the ocean. What is the dolphins elevation in feet?
Answer:
-20 Feet.
The dolphin went below its initial starting point, Zero
10 POINTS IF SOMEONE COULD HELP ME WITH THIS!! :(
Elevator 1 in a building moved from ground position to a final position of +16 feet. Elevator 2 in the same building moved from ground to a final position of –25 feet. Which statement best describes the final positions of these two elevators?
a) Elevator 1 is 16 feet below ground level, and elevator 2 is 25 feet above ground level.
b) Elevator 1 is 16 feet above ground level, and elevator 2 is 25 feet below ground level.
c) Elevator 1 is 16 feet above ground level, and Elevator 2 is 25 feet below the position of Elevator 1.
d) Elevator 1 is 16 feet below ground level, and Elevator 2 is 25 feet above the position of Elevator 1.
Answer:
Your answer is B) Elevator 1 is 16 feet above ground level, and elevator 2 is 25 feet below ground level.
Mark as brainliest if it's correct!
You have 41 marbles in a bag. Inside the bag are 15 red marbles, 10 blue marbles, and
the rest are white. If you reach into the bag and randomly select a marble, then what is
the probability the selected marble will be red?
Answer:
15/41
There are 41 marbles and 15 of them are red so you have a 15/41 chance to pick out a red as that is how many of them there are as compared to the total
A company that makes hair-care products had 6,000 people try a new shampoo. Of the 6,000 people, 24 had a mild allergic reaction. What percent of the people had a mild allergic reaction?
Answer:
0.4% people
Step-by-step explanation:
Convert fraction (ratio) 24 / 6,000 Answer: 0.4%
Answer:
0.4%
Step-by-step explanation:
1)What Is Cos(150) ,sin(150), tan(150)
Answer:
cos(150)=−√32 sin(150)=12. Explanation: First of all, observe that 150=180−30 . Then, remember that we have. cos(180−x)=−cos(x)
Step-by-step explanation:
what is the percentage of change for the cost of cheeseburger if in the year of 2000 it was $5.00 and in 2015 is $6.50.
Answer:
$2.50
2015: $2.00
2000: $7.50
2000: $5.00
2000: $2.00
2015: $9.00
2015: $6.50
2015: $4.50
2010
1. what is the percent of change in the cost of a pizza? _ a
x 150
100 1.50 p1500 750 1155oo.
150 isg
pi
2. what is the percent of change in the cost of a cheeseburger?
175
6.50
1.50
Step-by-step explanation:
George, a musician, works 35 hours in a week. If he earns $18.15 per hour, how much does he earn each week?
Answer:
$635.25
Step-by-step explanation:
He works 35 hours a week, multiply that by $18.15 and you get $635.25.
Look at image please help me asap
Answer: [tex]b^2[/tex]
You can write this as b^2
===================================================
Work Shown:
[tex]c = \frac{(ab^5)^{1/2}}{(ab)^{1/2}}\\\\c = \left(\frac{ab^5}{ab}\right)^{1/2}\\\\c = \left(b^4\right)^{1/2}\\\\c = b^{4*1/2}\\\\c = b^{2}\\\\[/tex]
Jo estimated the quotient of –41.71 divided by –6.03 by rounding each to the nearest integer. What is Jo’s error? Negative 42 divided by negative 7 = 6 Jo should have rounded the dividend to –40. Jo should have rounded the divisor to –6. Jo should have divided –7 by –42. Jo should have divided –7 by –7.
The correct answer is C) Jo should have rounded the divisor to –6.✅
{trust me, the answer is C}
We Wish You a Merry Christmas ❤
IamSugarBee
Answer:
c. Jo should have divided –7 by –42.
Step-by-step explanation:
Edge 2020
Find the distance between the points (-3, -6) and (1, -2).
Answer: -3 - 1 = -4
Your Answer I think is -4 Hope This helps If I'm Wrong I apoligize.
help help help\help help help\help help help\help help help\help help help\help help help\help help help\
Answer:
D
Step-by-step explanation:
Subtract 60 from 80 to get 20, and divide 20 by 80 to get 1/4, which can be converted to 25%.
Answer:
i think its D but im not exactly sure
According to the steps in problem 4, what is the fraction equivalent of 0.5? 9/5 4/9 5/9 5/13
Answer:
C. 5/9Step-by-step explanation:
10x = 5.5
-x = 0.5
9x = 5
x = 5/9
therefore, the answer is C. 5/9
The following are the annual salaries of 15 chief executive officers of major companies. (The salaries are written in thousands of dollars.)
157, 700, 1250, 767, 381, 495, 248, 75, 586, 224, 723, 472, 743, 676, 271
Required:
Find 25th and 70th percentiles for these salaries.
Answer:
The 25th percentile is 248.
The 70th percentile is 700.
Step-by-step explanation:
The pth percentile is a data value such that at least p% of the data-set is less-than or equal to this data value and at least (100-p)% of the data-set are more-than or equal to this data value.
Arrange the data set in ascending order as follows:
S = {75 , 157 , 224 , 248 , 271 , 381 , 472 , 495 , 586 , 676 , 700 , 723 , 743 , 767 , 1250}
The formula to compute the position of the pth percentile is:
[tex]p^{th} \text{Percentile}=\frac{(n+1)\cdot p}{100}[/tex]
Compute the 25th percentile as follows:
[tex]25^{th} \text{Percentile}=\frac{(15+1)\cdot 25}{100}=4^{th}obs.[/tex]
The 4th observation from the arranged data set is 248 .
Thus, the 25th percentile is 248.
Compute the 70th percentile as follows:
[tex]70^{th} \text{Percentile}=\frac{(15+1)\cdot 70}{100}\approx 11^{th}obs.[/tex]
The 11th observation from the arranged data set is 700.
Thus, the 70th percentile is 700.
Need help ()()()()()((;(;
Answer:
20%
Step-by-step explanation:
4/20 = x/100
100*4 =400
400/20 = 20
so
4/20 = 20/100
Show that 2 is a factor of 70
Answer:
70÷2=35
Step-by-step explanation:
Answer:
If you divide 70 by 35 you get 2 so that means that 2 is a factor of 70
Step-by-step explanation:
Help me with precal pleaseee
Answer: Choice C
[tex]\left[0 , \frac{\pi}{2}\right) \ \ \text{ and } \ \ \left(\frac{\pi}{2}, \pi\right][/tex]
==================================================
Explanation:
Let's look at the function y = sec(x) first, which is the secant function.
Recall that secant is 1 over cosine, so sec(x) = 1/cos(x)
We can't divide by zero, so cos(x) = 0 can't be allowed. If x = pi/2, then cos(pi/2) = 0 will happen. So we must exclude pi/2 from the domain of sec(x).
If we look at the interval from 0 to pi, then the domain of sec(x) is [tex]0 \le x < \frac{\pi}{2} \ \ \text{ and } \ \ \frac{\pi}{2} < x \le \pi[/tex]
we can condense that into the interval notation [tex]\left[0 , \frac{\pi}{2}\right) \ \ \text{ and } \ \ \left(\frac{\pi}{2}, \pi\right][/tex]
Note the use of curved parenthesis to exclude the endpoint; while the square bracket includes the endpoint.
So effectively we just poked at hole at x = pi/2 to kick that out of the domain. I'm only focusing on the interval from 0 to pi so that secant is one to one on this interval. That way we can apply the inverse. When we apply the inverse, the domain and range swap places. So the range of arcsecant, or [tex]\sec^{-1}(x)[/tex] is going to also be [tex]\left[0 , \frac{\pi}{2}\right) \ \ \text{ and } \ \ \left(\frac{\pi}{2}, \pi\right][/tex]
store A Sells a set for $26 and offers a 15% discount
Answer:
Step-by-step explanation:
20% of $1200 is $240
(0.2∗1200)=$240
Now subtract that number from 1200
1200−240=$960
try this example
Answer:
$22.10
Step-by-step explanation:
First you would multiply 26 by .15, which represents 15%, or 15/100. After you multiply, you will get 3.9. 3.9 represents the discount of the price. Since it is a discount, you suntract 3.9 from 26, and you get 22.1.
Isabella deposited $2000 in an account that pays 5% simple annual interest after one year how much interest will her investment pay
Answer:
100
Step-by-step explanation:
5% of 2000 is 100
