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
If a number is increased by 4, its square increases by 64. Find the number
Answer:
The number is 6
Step-by-step explanation:
6+4=10
6^2=36
10^2=100
100-36=64
Three girls share R12000 in the ratio 2:3: 7. Calculate how much each girl
will get
2+3+7=12
12=12000
2?=
2×12000=24000÷12=2000.
R2000 for the first girl.
Step-by-step explanation:
3×12000=36000÷12=3000.
R3000 for the second girl.
7×12000=84000÷12=7000.
R7000 for the third girl.
Each of the three girls would get R2,000, R3,000 and R7,000 respectively.
Given the following data:
Total amount = R12,000.Ratio = 2:3:7Sum of ratio = [tex]2+3+7[/tex] = 12.To share R12,000 among three girls in the ratio of 2:3:7:
How to calculate a ratio.In this exercise, you're required to share the total amount of money among three girls in the ratio of 2:3:7. Thus, we would solve as follows:
For a ratio of 2:
[tex]Amount=\frac{2}{12} \times 12000\\\\Amount=\frac{24000}{12}[/tex]
Amount = R2,000.
For a ratio of 3:
[tex]Amount=\frac{3}{12} \times 12000\\\\Amount=\frac{36000}{12}[/tex]
Amount = R3,000.
For a ratio of 7:
[tex]Amount=\frac{7}{12} \times 12000\\\\Amount=\frac{84000}{12}[/tex]
Amount = R7,000.
Read more on ratio here: brainly.com/question/13513438
Find the value of x in each triangle
Answer:
Step-by-step explanation:
The sum of a triangle’s angles is always 180 degrees so
x+x+25=180
2x+25=180
2x=155
x=77.5 degrees
27. Which expression is equivalent to (-8x + 2) - (6x + 9)?
A - 2x - 7
B
-2x + 11
C -14x - 7
D-14x +11
Answer:
option C is correct answer
I have made it in above picture
I need help with this will give you the brainliest
Answer:
Its A
Step-by-step explanation:
simplification of like terms
what is the value of ( 7 plus 2 cubed) x 9
Answer:
135
Step-by-step explanation:
[tex](7 + 2 {}^{3} ) \times 9 \\ = (7 + 8) \times 9 \\ = 15 \times 9 \\ = 135[/tex]
Answer:
135
Step-by-step explanation:
2 cubed=8
8+7=15
15x9=135
The sum of the measures of angle Pand angle S is 140°.
• The measure in degrees of angle Pis represented by the expression (5x + 30).
• The measure of angle S is 80°.
What is the value of x?
38
B
6
C
10
30
D 22
Answer:6
Step-by-step explanation:i’ve done this answer before
An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
The value of x is 6.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example:
2 + 3x + 4y = 7 is an expression.
3x = 4 is an expression.
3x + 4x - 4 is an expression.
We have,
The sum of the measures of angle P and angle S is 140°.
The measure in degrees of angle P is represented by the expression.
= (5x + 30)
The measure of angle S.
= 80°
Now,
5x + 30 + 80 = 140
5x + 110 = 140
Subtract 110 on both sides.
5x = 140 - 110
5x = 30
Divide both sides by 5.
x = 6
Thus,
The value of x is 6.
Learn more about expressions here:
https://brainly.com/question/3118662
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The value of la-1)+q? --- 2 4210 )
when a = 2 and b= -1 is
Answer:
-1
Step-by-step explanation:
2−1+ (22−(−1)²) / (1−(2)(−1))
+2(2−(−1)) / (2)(−1)
22−(−1)2 / 1−(2)(−1)
+2(2−(−1)) / (2)(−1)
= -1
5-8 The Quadratic Formula
Kamlu is on her balcony. Her friend is directly below her, tossing her an apple. He releases it from 5 feet above the ground with an initial velocity of 28
feet per second. If Kamlu's hands are 14 feet above the ground, how many chances will she have to catch the apple, and when?
Answer:
hi
Step-by-step explanation:
Which expression represents the correct form for the quotient and remainder, written as partial fractions, of StartFraction 8 x cubed minus 2 x squared minus 67 x minus 24 Over 2 x squared minus x minus 21 EndFraction?
Find the area of the pentagon. Round to the nearest square inch. The figure is not drawn to scale.
A) 54 in2
B) 67 in2
C) 72 in2
D) 87 in2
Answer:
B) 67 in2
Step-by-step explanation:
Mark spent $40 for 9 gallons of gas. How many gallons can he buy for $54 if the price per gallon stays the same?
Answer:
He would be able to buy 12 gallons of gas
Step-by-step explanation:
40/9=4.44 ( this number is rounded)
54/4.44=12.162
PLEASE ANSWER ASAP CAUSE THIS QUIZ IS DUE SOON
Line R is represented by the following equation: x + y = 2
Which equation completes the system that is satisfied by the solution (1, 1)?
2x + y = 2
4x - 2y = 2
2x - 2y = 2
x + y= 4
Answer:
4x-2y=2
Step-by-step explanation:
Line R is represented by the following equation:
x+y=2
We need to choose another system of equation of x+y=2
whose solution is (1,1)
The equation must be satisfy the point (1,1)
Option 1: 2x+y = 2
Put x=1 and y=1
2(1)+1 = 3
3 ≠ 2
False
Option 2: 4x-2y=2
Put x=1 and y=1
4(1) - 2(1) = 2
2 = 2
True
Option 3: 2x-2y=2
Put x=1 and y=1
2(1) - 2(1) = 0
0 ≠ 2
False
Option 4: x+y=4
Put x=1 and y=1
1+1 = 2
2 ≠ 4
False
Hence, The system of equation is 4x-2y=2
Micah is buying gravel for a rock garden that will be edged by a circular metal border. She will use 110 feet of metal edging for the border. What is the area of the garden? Use 3.14 for Pi
The equation C = 2 r is used to determine the circumference of a circle with radius r. Describe how you can substitute and simplify this equation to help solve the problem.
Answer:
9,498.5 ft²
Step-by-step explanation:
110 ft = circumference (C)
C=2r
110=2r
110/2=2r/2
55=r
Area of a circle (A) = πr²
Use 3.14 for π
A=3.14(55)²
A=3.14(3025)
A=9,498.5
The area of the garden is 9,498.5 ft²
A movie theater uses five pounds of butter for their popcorn each day. After six days how many pounds of butter would they have used?
Item 5
Use a graph to solve the equation.
6x−2=x+11
solution: x=
Answer:
x=13/5 or x=2.6
Step-by-step explanation:
Please help! 17/20. Will give brainliest! Spam answers will not be tolerated!
Factor. [tex]21x^2+22x-24[/tex]
Answer:
( x - 1 ) ( 2x + 24)
Step-by-step explanation:
2x² + 22x - 24
P= -48 , S = 22 , F = 24 and -2
2x² - 2x + 24x - 24
2x (x -1) +24 (x -1)
(x - 1) (2x + 24)
#6 need help asap will give brainly
total surface area Stot = 636 ft2
lateral surface area Slat = 420 ft2
top surface area Stop = 108 ft2
bottom surface area Sbot = 108 ft2
PLZ HELP RN ILL MARK YOU BRAINLIST IF ITS RIGHT PLZZZ IM DESPERATE
Answer:
w = -0.5
Step-by-step explanation:
Divide the entire equation by -6.8 to cancel it out and get your "w" variable alone.
w = -0.5
Answer:
-0.5
Step-by-step explanation:
divide 3.4/-6.8= -0.5
1.What is the principal which would amount to $6 900 in 3 years at 5% simple interest per annum?Required to answer. Single choice.
(1 Point)
a.) $6 885
b.) $6 555
c.) $6 000
d.) $5 865
Answer:
c
Step-by-step explanation:
I just looked up the question
gaveing out points for helpers!!
um so like... so like, plz help T-T
Answer:
I think it's y = 3/2x - 5
Step-by-step explanation:
when we multiply the slopes of perpendicular lines, we get -1
What is the height of a cylinder If the Volume is 250 ft and the diameter is 87
Answer:
h = 0.13
Step-by-step explanation:
Cylinder Volume Formula:
V = πr²h
Given:
V = 250
r = d/2 = 43.5
π = 3.14
Work:
V = πr²h
250 = π43.5²h
250 = (3.14)(1892.25)h
250 = 5941.665h
h = 250/5941.665
h = 0.13
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
Kylie wants to add 10 to 167. She thinks that the 6 represents the number of tens and thats by adding a 10 there are a total of 7 tens. Kylie believes the sum is 177. Which of the following is true about kylie's answer
Answer:
kylie is slow and so am i
Step-by-step explanation:
find the value of x...
Answer:
x = 23
Step-by-step explanation:
The 38 degree angle and the (6x +4) angle are supplementary which means both have to add up to 180 degrees. 180 - 38 leaves us with 142. When you plug in 23 to x you get (6(23) + 4) 6 times 23 is 138 and 138 plus 4 is 142. Which gives us our answer of x = 23.
ба = 26 + 4а
solve for a
need help due today .
Answer:
Radius=7.5cm
Diameter=15cm
Step-by-step explanation:
The radius is half of the diameter which is the length of the circle measured across (or through I guess), so the radius is what is shown 7.5, and the radius doubled (x2) is the diameter so 7.5x2 = 15.
HOPE THAT HELPS AND MAKES SENSE! :)
Make a table for the function using the given domain. Then graph the function using the
ordered pairs from the table.
f(x) = 6( 4/3 )^x ; domain = { -3, -2, -1, 0, 1 }
Let's see
[tex]\\ \rm\rightarrowtail f(x)=6(4/3)^x[/tex]
Put one by one
[tex]\\ \rm\rightarrowtail f(-3)=6(4/3)^{-3}=6(3/4)^3=6(27/64)=3(27/32)=81/32[/tex]
[tex]\\ \rm\rightarrowtail f(-2)=6(4/3)^{-2}=6(3/4)^2=6(9/16)=27/8[/tex]
[tex]\\ \rm\rightarrowtail f(-1)=6(4/3)^{-1}=6(3/4)=9/2[/tex]
[tex]\\ \rm\rightarrowtail f(0)=6[/tex]
[tex]\\ \rm\rightarrowtail f(1)=6(4/3)=8[/tex]
(-4 + 11i) ^ (-6-8i)
Answer:
i need help so i need more points
Step-by-step explanation:
thanks, im sorry that im not smart
Which is more, 1 quart or 3 cups?
Answer:
1 quart is more.
Step-by-step explanation:
1 quart =4cups so 1 quart is more.
Answer:
1 liquid quart is more then 3 cups because 1 quart is the same as 4 cups and 4 cups is more then 3 cups...