Answer:
A.) 4 x (y + 7)
Step-by-step explanation:
4 times means that you are going to be multiplying something by 4. It says 4 times the sum of y and 7. This means that you are going to multiply whatever y and 7 equal by 4. Sum means addition. So that's going to be that you are multiplying what the combined total of y and 7 is by 4.
I hope this helped :)
Use the distributive property to write an equivalent expression: 5(3x + 2)
Answer:
15x + 10
Step-by-step explanation:
5(3x + 2)
15x + 10
Figure 1 shows a paperweight made from a hollow hemisphere and a hollow cone. The paperweight contains sand so that the sand exactly fills the hemisphere. The radius of the hemisphere is equal to the radius of the base of the cone. The height of the cone is 15cm and the volume of the cone is 180π cm3 Figure 2 below shows the paperweight after it has been turned upside down. Diagram NOT accurately drawn h cm Figure 2 The height of the sand in the cone is h cm. Find, to 3 significant figures, the value of h.
Answer:
13.95 cm
Step-by-step explanation:
the volume of the cone =
⅓× π r². h = 180 π
⅓×π r²×15 = 180 π
(eliminate π)
=> 5r² = 180
r² = 180/5 = 36
r=√36 = 6 cm
the volume of the sand = ½×4/3 π r³
= ⅔× π ×6³ = 144π cm³
the ratio of the volume :
144π/180π = 0.8
so the value of h = ³√0.8 x 15 = 0.93× 15
= 13.95 cm
a circle has a circumference of 3.14 units what is the diametet
Answer:
1 unit
Step-by-step explanation:
The circumference of a circle is given by
C = pi *d
Using pi as 3.14
3.14 = 3.14 d
Divide each side by 3.14
1 = d
Answer:
1
Step-by-step explanation:
The formula for the circumference is πd where d is the diameter.
πd=3.14
Let's assume that π is around 3.14.
Isolate d, so you get d=1
Find the surface area
Answer:
352 m
Step-by-step explanation:
The area of a trapeze is (the biggest base + the smallest base) × height / 2
The area from rectangles are side a × side b
Trapeze: (6+12)×4/2 = 36
Rectangles: 5 × 10 = 50
6 × 10 = 60
12 × 10 = 120
There are two trapeze andtwo rectangles with the samesize, so you double their area:
2×36 + 2 × 50 + 60 + 120 = 352 m
A glass marble has a diameter of 16 millimeters. What is the approximate volume of the marble? Use 3.14 for
Answer:
The volume would be approximately 2143.573333...
The cost of 2 pounds
of coffee is $0.
True or False
Answer:
false
Step-by-step explanation:
the graph shows that 2 pounds of coffee would be about $4
Answer:
false.
Step-by-step explanation:
because if you look 1 pounds is 2 dollars
each side of a square field is 14m find its area
Answer:
Step-by-step explanation:
area of square field=l^2
=14^2
=196 m^2
Answer:
Area = 196 m²
Step-by-step explanation:
Side of the square field = 14m
Area of the square field = side²
→ 14² = 14 × 14
→ 196 m²
After filling the first sandbox to a height of 6 inches, the groundskeeper had 24 cubic feet of sand left
over. She used all the leftover sand to fill the second sandbox.
. The second sandbox has a base in the shape of a rectangle.
The base of the second sandbox has a perimeter that is less than 35 feet.
The groundskeeper filled the second sandbox to a height of 6 inches.
What could be the length and width, in feet, of the second sandbox?
Answer:
Length could be 14.05 ft and width 3.41 ft.
Step-by-step explanation:
The volume of the sand in the second box = 24 ft^3.
Let its base be x feet wide and y feet long.
Then 2(x + y) < 35.
The volume of sand = 0.5xy ft^3.
So 0.5xy = 24
xy = 48.
x = 48/y
Substituting ih the above inequality:
2(48/y + y) < 35
96/y + 2y < 35
2y^2 - 35y + 96 < 0
Solving 2y^2 - 35y + 96 = 0 gives y = 3.41, 14.09.
So the length could be 14.05 ft and the width 48/14 = 3.41 ft.
The length could be 14.05 ft and the width will be 3.41 ft.
What is volume?The volume of the sand in the second box = 24 ft³.
Let its base be x feet wide and y feet long.
Then 2(x + y) < 35.
The volume of sand = 0.5xy ft^3.
So 0.5xy = 24
xy = 48.
x = 48/y
Substituting the above inequality:
2(48/y + y) < 35
96/y + 2y < 35
2y² - 35y + 96 < 0
Solving 2y² - 35y + 96 = 0 gives y = 3.41, 14.09.
So the length could be 14.05 ft and the width 48/14 = 3.41 ft.
To know more about volume follow
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Solve the following inequality. 21 ≤ -3(x − 4) < 30 A. 28 ≤ x < 37 B. -10 < x ≤ -3 C. -6 < x ≤ -3 D. -3 ≤ x < 6
Step-by-step explanation:
21 ≤ -3(x − 4) < 30
=> devided by (-3)
-7 ≥ x-4 > -10
=> added by 4
-3 ≥ x > -6
the result : -6 < x ≤ -3 (option C)
the difference of place values of the digit 3 in 53,230
x^2 +14x +45=0 factorise
Answer:
Step-by-step explanation:
x^2+14x+45=0
x^2+(9+5)x+45=0
x^2+9x+5x+45
x(x+9)+5(x+9)=0
(x+9)(x+5)=0
either x+9=0 Or,x+5=0
x+9=0
x=0-9
x=-9
x+5=0
x=0-5
x=-5
therefore x=-9,-5
PLEASE HELP, I REALLY NEED IT!!
Answer: The answer for the first one is (75,25) and the second one is No
Step-by-step explanation:
1. when the football, is 25 feet high, it has traveled 75 feet abd that is it's highest point
2. No, because when you convert 45 yards to feet it is only going to be 9ft in height.
I hope this helps
Một xe máy khởi hành a đến b cách nhau 160 km sau 1 giờ ô tô đi từ b đến a hai xe gặp nhau tại c cách b 72 km biết vận tốc ô tô hơn vận tốc xe máy là 20 km. Tính vận tốc mỗi xe
Answer:
74
Step-by-step explanation:
well, you see, потому что я плохая сука-ниггер, да бруддахол лмао
The cost of 12 shirts is 84 find the cost of 6 shirts
Answer:
ok so 6 is half of 12 so we have to find half or 84 which is
42
Hope This Helps!!!
Answer: The answer is 42.
84/2= 42. May I have the brainiest?
Please I have been waiting for an answer. somebody help me I give brainlist
What is the value of x in this figure?
Enter your answer in the box.
Answer:
x = 114
Step-by-step explanation:
114 and x are vertical angles, therefore they are congruent.
Answer:
Vertical Angles are equal so 114
Step-by-step explanation:
Calculate the circumference of a circle with a radius of 14 cm.
Answer:
Step-by-step explanation:
circumference of a circle=2πr
=2*3.14*14
=28*3.14
=87.92 cm
Darius is studying the relationship between mathematics and art. He asks friends to each draw a "typical” rectangle. He measures the length and width in centimeters of each rectangle and plots the points on a graph, where x represents the width and y represents the length. The points representing the rectangles are (6.1, 12.0), (5.0, 8.1), (9.1, 15.2), (6.5, 10.2), (7.4, 11.3), and (10.9, 17.5). Which equation could Darius use to determine the length, in centimeters, of a "typical” rectangle for a given width in centimeters?
y = 0.605x + 0.004
y = 0.959x + 0.041
y = 1.518x + 0.995
y = 1.967x + 0.984
Answer:
its the 4th one
Step-by-step explanation:
Answer:
the answer is C y=1.518x+0.995
Step-by-step explanation:
can someone help will mark brainliest
Answer:
$60
Step-by-step explanation:
x - 15 = 45
x = 15 + 45
x = 60
If my answer is incorrect, pls correct me!
If you like my answer and explanation, mark me as brainliest!
-Chetan K
Answer:
45+15= 60
$60 is how much the original value was.
Hope this helped!
What is the value of x^2/y^1 when x=10 and y=5?
4+3x<=13 on a number line
Answer:
The question seems incomplete, but this statement would be true for all x below 3 (you can put any number less than 3 in it and get a true statement)
Hi, does anyone mind helping me with this pls?
Answer:
a and b
Step-by-step explanation:
they're both equal to 25%; 100 reduced by 75 is 25
Fill in the blanks below in order to justify whether or not the mapping shown represents a function
Answer:
not a function because -3 maps to two different values 5 and 6
Step-by-step explanation:
What is the diameter of a sphere with a volume of 72 in”, to the nearest tenth of an
inch?
The required diameter of the sphere where the volume is 72 inches is 5.2 inches respectively.
What is a sphere?A sphere is a geometrical object that resembles a two-dimensional circle in three dimensions. In three-dimensional space, a sphere is a collection of points that are all located at the same distance from a single point.
The radius of the sphere is denoted by the letter r, and the specified point represents its center.
The sphere is a three-dimensional shape that is sometimes referred to as a circle's second cousin.
A sphere is a solid shape that is circular, without borders.
Balloons, toy balls, and even light bulbs are examples of objects with sphere shapes.
So, the volume of the sphere formula is:
4/3πr³
We know that the volume is 72 inches.
Then calculate as follows:
72 = 4/3πr³
r³ = 72*3/4π
r = 2.58 (Approx)
Rounding off: 2.6 inches
Then the diameter would be:
2.6 * 2 = 5.2 inches
Therefore, the required diameter of the sphere where the volume is 72 inches is 5.2 inches respectively.
Know more about a sphere here:
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Correct question:
What is the diameter of a sphere with a volume of 72 in”, to the nearest tenth of an inch?
pls answer asap 7 - 3 r = r - 4 ( 2 + r)
Answer:
no real answer
Step-by-step explanation:
distribute the -4 and combine all of the like terms on the left side = r-8-4r, then -8-3r
then we have 7-3r=-8-3r
from here, we can already tell that there's no real answer. this is because the two -3r will cancel, leaving no variable.
since 7 doesn't equal -8, there is no answer.
if, for example, the value on both sides of the equal sign were the same after the variable was eliminated, then your answer would be all real numbers
How would you write one million as a power of 10?
Answer:
10 to the power of 6
Step-by-step explanation:
10 x 10 x 10 x 10 x 10 x 10 = 1,000,000
Answer:
[tex]10^{6}[/tex]
Step-by-step explanation:
10 multiplied by itself 6 times is 1,000,000
Find the volume of a pyramid with a square base, where the area of the base is 19.8 cm2 and the height of the pyramid is 13.9cm. Round your answer to the nearest tenth of a cubic centimeter
Answer:
91.7 cm^3
Step-by-step explanation:
[tex]Vol=\frac{1}{3} \times base area \times height=\frac{1}{3} \times 19.8 \times 13.9= 91.7 cm^{3}[/tex]
1 is 3 . 3 is 5 . 5 is 4 . 4 is 4 .
What is 7? Explain why.
Answer:
5
Step-by-step explanation:
seven has 5 letters
Consider the equation below
-2(bx -5 ) =16
Answer:
bx = - 3
Step-by-step explanation:
- 2(bx - 5) = 16
- 2bx + 10 = 16
- 2bx + 10 - 10 = 16 - 10
- 2bx = 6
- 2bx ÷ - 2 = 6 ÷ - 2
bx = - 3
Simplify. Express the answers using positive exponents:
Help me on this, Points are 2x than they usually are.
Answer:
[tex]\frac{-1}{2}ab^{12}[/tex]
[tex]\frac{w^{10}}{3y^4}[/tex]
Step-by-step explanation:
Given the expression;
[tex]\frac{-2a^2b^4}{4ab^{-8}}\\= \frac{-2}{4}*a^{2-1}b^{4-(-8)}\\= \frac{-1}{2}ab^{12}[/tex]
Similarly for the expression;
[tex]\frac{-5w^4y^{-2}}{-15w^{-6}y^2}\\= \frac{-5}{-15}*w^{4-(-6)}y^{-2-2}\\= \frac{1}{3}w^{10}y^{-4} \\= \frac{w^{10}}{3y^4}[/tex]
Please help me!!!!!!!!!
Answer:
14.4
Step-by-step explanation:
