Answer:
27 tiles
Step-by-step explanation:
Here is the complete question :
Todd uses 21 white tiles and some black tiles to make a mosaic.the mosaic has a total area of 144 square centimeters. Each tile has an area of 3 square centimeters. How many black tiles did Todd use
Steps to take to determine the answer
Determine the total area of the white tiles used. This can be determined by multiplying the number of white tiles by the area of a tilesubtract the area of the white tiles from the total area of the mosaic. Divide the answer derived in the previous step by 3Area of the white tile = area of each tile x total white tiles used
3 x 21 = 63cm²
144cm² - 63cm² = 81cm²
Number of black tiles used = 81cm² / 3cm² = 27 tiles
Mrs. Torres is mailing a package that weighs 4.5 pounds. The post office charges by the ounce to mail a package. How much does the package weigh in ounces?
Solve 81^x=27^x +2
x=1
x=2
x=5
x=6
Answer:
x=6
Step-by-step explanation:
Answer:
x=6
Step-by-step explanation:
[tex]{3}^{4x} = {3}^{3( x+ 2)} [/tex]
4x = 3(x + 2)
4x = 3x + 6
4x - 3x = 6
x = 6
Helpp!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1
Answer:
36 (Answer D)
Step-by-step explanation:
There are 4 possible choices of main dish, 3 of sides and 3 of drinks.
All choices are independent, so this is independent probability.
The number of combinations is 4*3*3, or 36 (Answer D)
Simplify the fraction below into simplest form: 12/8
The proper height of a highway guardrail is 27 inches, but 3 inches higher or lower is acceptable. Which inequality represents the acceptable heights, h, of a highway guardrail?
A.|h+27|≤3
B.|h−3|≤27
C.|h+3|≤27
D.|h−27|≤3
Answer:
Step-by-step explanation:
27 is the "center" of a range of measurements of the height of the guard rail. The height could be as much as 30 inches or as little as 24 inches. The absolute value operator encloses "x - 27," where 27 is the "center." The acceptable excess or acceptable deficiency is 3 inches.
So now we can eliminate possible answers B and C, in both cases because 27 is inappropriately greater than 3.
Narrowing down our choices, we have h + 27 and h - 27 inside the absolute value operator. 27 is a positive quantity (height of the guard rail), so the inequality showing +27 as the "center" is correct; that is
D: |h - 27| ≤ 3 (measurements in inches).
use the distributive property to write an expression that is equivalent, show your work.
4(x+8)=
A rectangular table is 64 inches long and 35 inches wide. What is the perimeter of this table
The perimeter of a rectangular table is 198 inches.
What is the perimeter of a rectangle?The perimeter of a rectangle is the total distance of its outer boundary. It is twice the sum of its length and width and it is calculated with the help of the formula: Perimeter = 2(length + width).
Given that, a rectangular table is 64 inches long and 35 inches wide.
Now the perimeter of table is
2(64+35)
= 2×99
= 198 inches
Therefore, the perimeter of a rectangular table is 198 inches.
To learn more about the perimeter of a rectangle visit:
https://brainly.com/question/15287805.
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PLEASE HELP ME
2x+45=90
Answer:
x = 45/2 = 22.5 cm
Step-by-step explanation:
2x + 45 = 90
2x = 90- 45= 45
2x = 45
x = 45/2 = 22.5 cm
plz mark my answer as brainlist plzzzz.
hope this will be helpful to you .
if you find it useful.
please would you be so kind and help me with problems four through 12?
I will do 4 and 5 only. Also, post one problem at a time.
Question 4
Measure of arc GJ = measure of the central angle, which in this case is 90 degrees. So, the measure of arc GJ = 90°.
Question 5
The measure of diameter HJ = 180 degrees.
We need to find the adjacent angle which I will call angle x.
So, x = 180° - 151° = 29 degrees.
Just like Question 4 above, the measure of 29 degrees is the central angle for arc HI.
As you know, HI = the measure of the central angle. So, the measure of arc HI = 29°.
Try the rest on your own.
As you do the rest, keep in mind that the measure of a circle in terms of degrees is 360 degrees. This will help you do the rest of the questions for circle B.
PLEASE HELP ASAP 25 POINTS GOOD ANSWERS ONLY!
bob has 8 pieces of square index cards that each measures 8 inches per side. Using a pair of
scissors, he cuts each piece in half (so the resulting size is 8” x 4”) and then places all the
resulting card pieces in a new stack. If he repeats this procedure 4 more times, how many
pieces of card stock will he have and what will be the measure of each piece? (Note: All
cuts will be made along the longer edge of the piece if the piece of index card is not square.)
Answer:
128
Step-by-step explanation:
FIND THE 2 MISSING Y VALUES (brainliest)
Answer:
first blank 8, 2nd blank 12
Step-by-step explanation:
plug X into the equation to find y
y = -4(-2) = 8
y = -4(3) = -12
find the value of given expression
[tex] \sqrt{63 \times 63} [/tex]
Answer:
± 63Step-by-step explanation:
[tex]\sqrt{63*63} = \sqrt{63^2} =[/tex] ± 63Answer:
√(63×63)=√63²=±63 is your answer
how do you write 7 a mixed number in the simplest form
What does this even mean?
PLEASEEEEEE HELPPPP. THIS IS DUE TODAY. ( click on the picture)
estimate the product then find the product
Answer:
1 5/6 = 11/6
7 1/3 = 22/3
11/6 + 22/3 = 11/6 + 44/6 = 55/6 ≈ 9.16
1 5/6 = 11/6
11/6 - 1/10
55/30 - 3/30 = 52/30 ≈ 1.73
9.16 x 1.73 = 15.8468
So, 15.8468 is the result.
I hope this is helpful. :)
Please, do me Brainliest!
plz help fast (worth 15 pts) A prism and two nets are shown below:
Image of a right triangular prism and 2 nets. The triangle bases have base 4, height 3, and diagonal side 5. The length of the prism from the bases is 9.4. Net A has 3 rectangles in a row. The middle one has sides AC and CD. This middle one has triangle ABC on top and identical triangle below. Net B is the same except that the triangle base ABC is on top of the last rectangle which has sides AC and CD. Units are in inches.
Part A: Which is the correct net for the prism? Explain your answer. (2 points)
Part B: Write the measurements of Sides AB, BC, and CD of the correct net. (4 points)
Part C: What is the surface area of the prism? Show your work. (4 points)
Answer:
This is worth more than 15
Step-by-step explanation:
Image of a right triangular prism and 2 nets. The triangle bases have base 4, height 3, and diagonal side 5. The length of the prism from the bases is 8.6. Net A has 3 rectangles in a row. The middle one has sides AC and CD. This middle one has triangle ABC on top and identical triangle below. Net B is the same except that the triangle base ABC is on top of the last rectangle which has sides AC and CD. Units are in inches.
Step-by-step explanation:
The radius of a quarter circle is 3 millimeters. What is the quarter circle's area?
r=3 mm
Answer:
28.3mm
Step-by-step explanation:
3(3)=9(pi)= 28.274...
Answer: 9[tex]\pi[/tex], or more specifically, 28.26, or even more specifically, 28.2643.
Explanation:
To find the area of a circle, you need to do r squared x pi. Since pi repeats randomly infinitely, we are going to simplify it to 3.14. 3 squared or 3 x 3 equals 9. 9 x 3.14 = 28.26. Therefore, the area of the quarter is 28.26. If you want to find the answer without simplifying pi, it is approximately 28.2643. You can also write it as 9[tex]\pi[/tex].
Hope this helps! If it did, please give brainliest! It would help a lot! Thanks! :D
Look at the figure. Find the value of x
Answer:
x=15
Step-by-step explanation:
This is an Isosceles Triangle, so that means there are two angels that are the same. So we could rearrange the equations to get:
[tex]3x=5x-30\\\text{ subtract 5x on both sides }\\\\-2x=-30\\\text{ divide by two on both sides }\\x=15\\[/tex]
Hope it helps.
1. Suppose that 35% of all patients admitted to a hospital's intensive care unit (ICU) have high blood pressure, 42% have some sort of infection, and 12% have both problems
Answer:
a) 65%
b) 28.57%
Step-by-step explanation:
Suppose that 35% of all patients admitted to a hospital's
intensive care unit have high blood pressure, 42% have some sort of infection, and 12% have both problems. Probabilities estimated from the data in ICU Admissions. (10POINTS)
(a) Find the probability that a randomly chosen patient in this ICU has either high blood pressure or an infection.
(b) Find the probability that a patient admitted to the ICU has high blood pressure given that an infection is present.
Solution:
Let H represent the people with high blood pressure and I represent the people with infection.
P(H) = 35% = 0.35, P(I) = 42% = 0.42, P(H ∩ I) = 12% = 0.12
Those with only high blood pressure = P(H ∩ I') = P(H) - P(H ∩ I) = 0.35 - 0.12 =0.23
Those with only infection = P(H' ∩ I) = P(I) - P(H ∩ I) = 0.42 - 0.12 =0.30
a) probability that a patient has either high blood pressure or an infection = P(H ∪ I)
P(H ∪ I) = P(H ∩ I') + P(H' ∩ I) + P(H ∩ I) = 0.23 + 0.3 + 0.12 = 0.65 = 65%
b) probability that a patient has high blood pressure given that an infection is present = P(H / I)
P(H / I) = P(H ∩ I) / P(I) = 0.12 / 0.42 = 0.2857 = 28.57%
Select all of the answer choices that show the sum of 3⅖ + 2⅕.
Answer:
5 3/5
Step-by-step explanation:
17/5+11/5=28/5=5 3/5
Answer:
5 3/5
Step-by-step explanation:
3+2
2/5 + 1/5
5+3/5
5 3/5
You take a plane to NYC, which is 750 miles away. The trip takes about 180 minutes. At what speed did the plane fly in miles per hour?
Answer:
250 mph
Step-by-step explanation:
d = rt
180 min = 3 hr.
750 = 3r
r = 250 mph
What is the interest rate if…
Principal = $1,250
Time = 4 years
Interest = $285.
pls help will give brainliest!!
Do peppermint (candy, oils) help you to focus better? Why? How? Does it help you?
Answer:
It can but it only really works if use them when you study as well.
Step-by-step explanation:
basically what happens is when you eat/smell these things when your studying and you then smell/eat them while taking an exam/test it will usually help you remember the things you were trying to study. same thing for a certain scent calming you down it helps you remember things
Answer:
yes, the strong flavor and smell of peppermint can keep your mouth more alert and therefore your brain more alert (energizes your brain) it is also shown that peppermint stimulates the brain so that it improves memory, they can also help with concentration and focus.
plus the sugar gives your body some more energy to feed off of so you don't get tired
----------
hope this helps :)
Julie wants to attend a two-year college that has an annual tuition of $8,600. Julie earned a grant of $1,600 for each year and has saved $5,980 for college. How much more does she need to pay the tuition for both years?
please i need help!! i’ll put brainliest and 30 points.
Two shipping companies charge different amounts to mail packages. UPS charges
an initial $5 fee, and each pound shipped is an additional $1. Fed Ex charges an
initial $3 fee, and $1.50 for each pound shipped.
a.) How much would each company charge to mail a package weighing 2
pounds?
b.) For what weight package will the two companies charge the same amount?
c.) Which company charges less for a 6-pound package? How much will you
save by choosing this company to ship your 6-pound package?
Answer:
A. UPS- $7 Fed Ex- $6
B. 4 pounds
C. UPS by one dollar
Step-by-step explanation:
A rectangular playground has a perimeter of 30 yards. It is 6 yards wide. What is the area of the playground?
The planet Venus has an average distance from the Sun of about 67,200,000 miles. Write this number in scientific notation
Answer:
6.72x10^7
Step-by-step explanation:
I hope this helps
What is the volume of the right rectangular prism below?
Answer:
Option C will be your answer
[tex]3 \frac{3}{4} cubic \: inches[/tex]
Step-by-step explanation:
hope it helps you
700% of what is 3780?
Answer:
26460
Step-by-step explanation:
it is the correct answer
Answer:
3780 is 700% of 540
Step-by-step explanation:
According to g00gle this is correct and also a percentages calculator
Can someone please help me
Answer:
16.8 cm³
Step-by-step explanation:
Volume= length x width x height
length x width x height = Volume
4 x 1.4 x 3 = 16.8 cm³
Answer:
16.8 cm
Rounded: 17 cm
Step-by-step explanation:
Use the Volume formula: V= W*L*H (width x length x height)
V= 4*3*1.4
V= 16.8