Answer:
42 square inches
Step-by-step explanation:
Area of a triangle = (1/2)(base)(height)
A = 1/2(12)(7)
A = 1/2(84)
A = 42
What is 78,400,000 expressed in scientific notation?
Answer:
7.84 × 10 ^7
Step-by-step explanation:
Hurry please!!! Fast response
Answer:
A.
[tex] SA= \frac{2}{3} \pi rl+16 \pi r^2[/tex]
Step-by-step explanation:
Surface area of the original cone
[tex] SA= \pi r l + \pi r^2... (1)[/tex]
When, radius is quadrupled and slant height is reduced to one sixth
[tex] i. e. \: \:r = 4r\: \: \&\:\: l= \frac{1}{6}l[/tex]
Plug the above values of r and [tex] l[/tex] in equation (1), new surface area becomes:
[tex] SA= \pi (4r)\times \frac{1}{6} l+ \pi (4r)^2[/tex]
[tex] SA= \frac{4}{6} \pi rl+16 \pi r^2[/tex]
[tex]\huge \purple {\boxed {SA= \frac{2}{3} \pi rl+16 \pi r^2}} [/tex]
Direction: Choose the letter of the correct answer and encircle the letter that corresponds to it.
1. The measures of two angles of a quadrilateral are 100° and 130°. If the other two angles are
congruent, find the measure of each angle.
A. 50° B. 55° C. 60° D. 65°
2. If the sum of the measures of the interior angles of a regular polygon is 9 000°, how many sides
does it have?
A. 50 sides B. 51 sides C. 52 sides D. 53 sides
3. The measure of the exterior angle of a regular polygon is 20°. How many sides does it have?
A. 12 sides B. 14 sides C. 16 sides D. 18 sides
4. The measures of the exterior angles of an octagon are m°, 2m°, 3m°, 4m°, 5m°, 6m°, 7m°, and 8m°.
What is the value of m?
A. 9 B. 10 C. 11 D. 12
MATH 7 QUARTER 3 Week 6
MATH 7 QUARTER 3 WEEK 6 Page 2 | 7
5. Three angles of a pentagon are 105°, 135° and 120°. Find the other two angles if they are in the
ratio 2:3.
A. 72° and 108° B. 72° and 109° C. 73° and 108° D. 73° and 109°
Answer:
1) D =65
2) C = 52
3) D =18
4) B =10
5) A = 72 and 108
Step-by-step explanation:
1) D =65
2) C = 52
3) D =18
4) B =10
5) A = 72 and 108
A rectangle has a length of 4 millimeters and an area of square 116 millimeters. What is the width? What is the perimeter?
Answer:
Width = 29mmPerimeter = 66mmStep-by-step explanation:
The area of a rectangle can be calculated by the formula:
= Length * Width
As we have the length and the area, we can make the width the subject of the formula to solve for it:
116 = 4 * width
Width = 116/4
= 29 mm
Perimeter is:
= Length + Length + Width + Width
= 4 + 4 + 29 + 29
= 66 mm
# of faces?
# of edges?
# of vertices?
HELP (links= report)
Step-by-step explanation:
Face is 5 the edges is 10 the vertices is 12
*Can someone please help me out with this one?*
A nutritionist collects data from 25 popular breakfast cereals. For each cereal, the number of calories per serving is
plotted on the x-axis against the number of milligrams of sodium on the y-axis. The value of , for the resulting
scatterplot is 0.83.
How would the value of the correlation coefficient change if sodium was plotted on the x-axis
and calories plotted on the y-axis?
A.The value of r would increase
B.The value of r would not change
C.The value of r would change to -0 83.
D.The value of r could increase or decrease, depending of the strength of the new relationship.
Answer:
B) The value of r would not change
Step-by-step explanation:
If there's a positive association between sodium and calories, that's like saying there's a positive association between calories and sodium. Therefore, the value of r would not change because both variables are still increasing with each other.
PLEASE HURRY IM ON A TIMER!!!!
Please answer question 9!!!
It is A because it is only $40.000 so therefore it is A.
Plz, help me with this question!
Answer:
A. Triangular Prism
Step-by-step explanation:
Pyramids have a square base, so it's not that. and it is not rectangular, so it's not that either
HELP I BEGGGGggggggg
Answer:
c = 25m + 40
Step-by-step explanation:
what is the answer? iiii...........................
PLEASE HELP ME IM TIMED WILL MARK BRAINLIEST NO LINKS
Answer:
27.83 dollars
Step-by-step explanation:
Maurice finished 12/25 of his book. He says he is more than halfway done with his book. Is he correct or incorrect? Explain.
Answer:
He is incorrect. If you want 12 to be half of the book the other number would have to be twenty four.
Answer:
incorrect
Step-by-step explanation:
it has to be 12.5 to be exactly half way done with it
NEED HELP ASAP
NO LINKS AND NO JUST SAYING HI, PLEASE ANSWER LEGITIMATELY! THANK YOU!!!! <3
Answer:
85 degrees
Step-by-step explanation:
Hi there!
<x is an exterior of the triangle ABC. An exterior angle of a triangle is equal to the sum of the two opposite interior angles. Therefore, we could say that x is equal to the sum of 60 and 25:
60+25=x
85=x
Therefore, angle x measures 85 degrees.
I hope this helps!
Answer:
85
Step-by-step explanation:
Please help! I'll mark it as brainliest
What is the area, in square centimeters, of the trapezoid below?
11.7 cm
5.5 cm
6.5 cm
Answer:
50.05 cm^2
Step-by-step explanation:
Ok so first lets find the area of the rectangle before finding the attached triangle. You have to imagine a line separating this shape into a triangle and rectangle.
The rectangle's size is 6.5x5.5=35.75 cm^2
The rectangle's size is 11.7-6.5 to get the base length, which is 5.2
The height is 5.5
So it's 5.2*5.5/2=14.3 cm^2
14.3+35.75=50.05 cm^2
help pls...
Three side lengths of a right triangle are given. Use the drop-down menus to explain why matters where you substitute the lengths in the Pythagorean Theorem.
In the Pythagorean Theorem, the (two ahortest sides) / (one short side and the hypotenuse) must always be substituted for the side lenghts, not (a short side) / (the hypotenuse).
Answer:
?
Step-by-step explanation:
Is
233
in the sequence below?
2
,
5
,
8
,
11
,
14
,
.
.
.
Answer:
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
.
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.
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,
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Use point-slope form to find the equation of the line with a slope of -3 that passes through the point (-1,0)? Express your answer in slope-intercept form.
Answer:
y = -3x - 3
Step-by-step explanation:
y = -3x + b
0 = -3(-1) + b
0 = 3 + b
-3 = b
y = -3x - 3
58, 72, 74, 92, 84, 40, 74, 81, 76, 83 What was the maximum score earned on Mr. Hill's final exam
Answer:
92
Step-by-step explanation:
Max= biggest number, surely?
What is the x-coordinate of the solution to the system of
linear equations?
x = 3y - 8
2x + 26 = y
Answer: look at the picture
Step-by-step explanation: Hope this help :D
Write the simplified expression: 2x + 3(x - 2) - 3(x -6)
Answer:
2x+12
Step-by-step explanation:
2x+3(x−2)−3(x−6)
Distribute:
=2x+(3)(x)+(3)(−2)+(−3)(x)+(−3)(−6)
=2x+3x+−6+−3x+18
Combine Like Terms:
=2x+3x+−6+−3x+18
=(2x+3x+−3x)+(−6+18)
=2x+12
Answer:
=2x+12
Answer:
2x + 12
Step-by-step explanation:
distribute numbers inside parentheses
2x + 3x -6 -3x + 18
add x values together and integers together
2x + 3x -3x = 2x
-6 + 18 = 10
simplified to 2x + 12
Alex and Nick collect baseball cards. Alex has three more than twice as many cards as Nick. Together they have 27 cards.
How many cards does Alex have?
Find the volume of each solid. Round to the nearest tenth if necessary. Use 3.14 for or
22/7
A : 14.7 m3
B : 3.7 m3
C : 4.7 m
D : 6.7 m3
Answer:
1.1^2 = 1.21
1.21 x 3.14 = 3.7994
3.7994 x 2.9 = 11.01826
11.01826 divided by 3 = 3.67275333333 rounded = 3.7 m3
10. Express the following as a single fraction.
x-1 +x+2 + x
2
5
4
Answer:
x+x+x=3x
2-1=1
3x+1
this is ansver
If the radius of a circle is 1 kilometer what is the area of the circle?
Answer:
The area of the circle is [tex]1\pi[/tex] or approximately 3.14 [tex]km^2[/tex]
Step-by-step explanation:
The formula to find the area of a circle is [tex]\pi r^2[/tex], where [tex]r[/tex] represents the radius of the circle. In this case, the area would be [tex]1^2*\pi[/tex] = [tex]\pi[/tex] ≈ 3.14 [tex]km^2[/tex].
Find the value of x that will make the statement true.
11, 12, 14, x, 22, 27; The median is 16.
Find the area of the figure.
Answer:
64 + 28 = 92
Step-by-step explanation:
Split the figure in half creating two triangles and a square.
length and width for the square would be 8ft and 8ft. Multiply both for 64 to be the area.
7ft and 4ft are the height and base for the triangles.
In this case, just multiple 7 and 4 because normally you would need to divide the product by 2 however since there are two triangles it negates the step.
Answer:
92ft^2
Step-by-step explanation:
you have to find the are of the triangle and subtract it from the area of the rectangle.
area of the triangle is 28ft^2
area of the rectangle is 120ft^2
120-28 = 92
What 2D shape is formed by slicing a square pyramid horizontally?
A circle
B rectangle
C triangle
D) square
Answer:
B, Rectangle.
Write an equation to represent function A
Answer:
y = 312x + 2
Step-by-step explanation:
According to y = mx + b, m stands for slope and b stands for y-intercept. Let us find the y-intercept. To find the y-intercept, the x should be zero in (x, y).
(x, y)
(0, 2) ---> y-intercept (b)
Now that we have found the y-intercept, we will now find the slope by using its formula.
Slope formula:-
m = y2 - y1 / x2 - x1
Pick two random (x, y). I will pick the first and last pairs.
(0, 2) and (4, 1250)
Now plug these two pairs in the formula.
m = y2 - y1 / x2 - x1
m = 1250 - 2 / 4 - 0
m = 1248 / 4
m = 312
This means that the slope (m) is 312. Now put that in y = mx + b form.
y = mx + b
y = 312x + 2
Both of the forms are the same. Hope this helps, thank you :) !!
Find two numbers that sum to 27 and their difference is 5