Answer:
1352 cm
Step-by-step explanation:
Length (l) = 13 cm
Width (w) = 52 cm
Perimeter of the rectangle = 2(l + w) units
P = 2(13 + 8)
P = 2 (21)
P = 42
Thus, the perimeter of the rectangle is 42 cm.
Example 2: If a rectangle's length is 2x + 1 and its width is 2x – 1. If its area is 15 cm2, what are the rectangle's dimensions and what is its perimeter?
Solution:
We know that the dimensions of the rectangle in terms of x:
l = 2x + 1
w = 2x – 1
Since the area of a rectangle is given by:
A = l * w
We can substitute the expressions for length and width into the equation for area in order to determine the value of x.
A = l * w
15 = (2x + 1) (2x -1)
15 = 4x2 – 1
16 = 4x2
x = ±2
Note that the value of x must be positive and therefore in our case, the value of x is 2. And now we have:
l = 11 cm
w = 52 cm
Therefore, the dimensions are 5cm and 3cm.
Now, substituting these values in the formula for perimeter, we will get
P = 2l + 2w
P = 2(5)+2(3)
P = 10+6
P = 16 cm
Identify the rule for the transformation shown in the
figure that translates triangle ABC into triangle A'B'C'.
Answer:
(x,y) → (x +4, y + 2)
Step-by-step explanation:
a) Rationalise the denominator of a,b,c
Answer:
See below
Step-by-step explanation:
a)
[tex] \frac{20}{ \sqrt{10} } = \frac{20 \sqrt{10} }{ \sqrt{10} \times \sqrt{10} } = \frac{20 \sqrt{10} }{10} = 2 \sqrt{10} [/tex]
b)
[tex] \frac{ \sqrt{2} }{2 \sqrt{5} - 1 } \\ \\ = \frac{ \sqrt{2} \times (2 \sqrt{5} + 1 )}{(2 \sqrt{5} - 1)(2 \sqrt{5} + 1) } \\ \\ = \frac{ \sqrt{2} \times 2 \sqrt{5} + \sqrt{2} \times 1 }{(2 \sqrt{5} ) ^{2} - (1)^{2}} \\ \\ = \frac{ 2 \sqrt{10} + \sqrt{2}}{20 - 1} \\ \\ = \frac{ 2 \sqrt{10} + \sqrt{2}}{19} \\ \\ equating \: it \: with \: \\ \frac{ a + \sqrt{b}}{c} \\ \\ a = 2 \sqrt{10} \\ \\ b = 2 \\ \\ c = 19[/tex]
Answer:
The above answer is correct
Find the area of these triangles please! Greatly appreciated if you do.
Answer:
11. 35 ft²
12. 24 cm²
13. 18 ft²
14. 28 in²
15. 9 in²
Step-by-step explanation:
11. A= (b×h)÷2
= (10×7)÷2
= 70 ÷ 2
= 35 ft²
12. A= (b×h)÷2
= (8×6)÷2
= 48 ÷ 2
= 24 cm²
13. A=(b×h)÷2
=(9×4)÷2
= 36 ÷ 2
= 18 ft²
14. A=(b×h)÷2
=(7×8)÷2
= 56 ÷ 2
= 28 in²
15. A=(b×h)÷2
=(3×6)÷2
= 18 ÷ 2
= 9 in²
Good luck ^_^
Hope this answer your question
Match the reasons with the statements in the proof.
Answer:
for some reason i cant see ur attachment. lo siento
Jenny bought a bag of cookies for a snack.She gave 2/5 of them to Tim.Time got 14 cookies out of the deal how many cookies came in a bag ?How many cookies did jenny have left to eat for herself
Answer:
There were 35 cookies in the bag, she kept 21 for herself and gave 14 to Tim.
Step-by-step explanation:
2/5 = 40%
14 ÷ 40% = 35
14 is 40% of 35.
35 - 14 = 21
Paisley works on her drawings for 2 hours. She spends 1/6 hour on each drawing. How many drawings does she work on in 2 hours? HELP FAST!!!!
Answer:
1/12
Step-by-step explanation:
1/6 divided by 2 = 1/12
please help me please i really need help please
Answer:
There are a total of 24 players and 4 teams.
Please let me have brainliest :)
Probability is the chance that some event will occur or a guarantee.
12 is 150% of what number?
Answer:
8
Step-by-step explanation:
Answer: the answer is 8
Mike bakes 24 cookies for some friends. He gives the same number of cookies to 2 friends. How many cookies c does each friend receive? Write an equation to represent the number of cookies each friend receives.
Answer:
12 cookies for both friends (assuming you don't get any)
Step-by-step explanation:
24/2=12
since you seem like a kid, that slash means divided by
Help please this is geometry
Answer:
14
Step-by-step explanation:
All of the angles are marked as congruent, which means it is an equlateral triangle. This means that all of the sides are congruent too.
Therefore z + 2 = 2z -10
add 10 to each side
z + 12 = 2z
subtract z from each side
12=z
now that we know that, we can plug it back in to either line (it doesn't matter because they're congruent)
line AB is z+2 which is 12+2 or 14
and line CB is 2z-10 which is 2(12)-10 or 24-10 which is also 14
so line CA is also 14 units long.
Help ?
Um answer this question
Answer:
144
Step-by-step explanation:
12 times 12= 144
Plz help will make brainliest
Answer: A or B is the correct answer i need brainlist so
Step-by-step explanation:
2. GEOMETRY What is the difference in the areas of the polygons shown A=x+4 A=5x-7
Answer:
6
Step-by-step explanation:
Answer:
4x - 11
Step-by-step explanation:
If the volume of a cone with the same height as a cylinder equals the volume of the cylinder, the equation for the radius of cone Rin terms of the radius of cylinder r is:
Answer: R = √(3*r^2)
Step-by-step explanation:
For a cylinder with radius r and height H, the volume is:
V = pi*r^2*H
For a cone of height H, and with a base of radius R, the volume is:
V = (1/3)*pi*R^2*H
In this case, we know that both figures have the same height, and the same volume, then we can write:
pi*r^2*H = (1/3)*pi*R^2*H
Now we can divide by pi in both sides to get:
(pi*r^2*H)/pi = ((1/3)*pi*R^2*H)/pi
r^2*H = (1/3)*R^2*H
Now we can divide both sides by H:
(r^2*H)/H = ((1/3)*R^2*H)/H
r^2 = (1/3)*R^2
Now we want to write R in terms of r.
Then we need to isolate R in the above equation:
r^2 = (1/3)*R^2
3*r^2 = R^2
√(3*r^2) = R
R = √(3*r^2)
Find the slope of a line parallel to the line given
m=-7/8
A. 8/7
B. 7/8
C. -7/8
D. -8/7
Please help solve this
Answer:
the asnwer is c
Step-by-step explanation:
4 unit squares each have of their area shaded. 7 What is the total area that is shaded? square units
Answer:
hgb hfgb,rnvjdfjvfnvjfvjfjgv
Step-by-step explanation:
14.2m + 3 - 2.1m + 4.6
Answer:
the answer is 10.5m
Step-by-step explanation:
14.2m+3-2.1m+4.6
= 17.2m-2.1m+4.6
= 17.2m-6.7m
= 10.5m
the answer is 10.5m
Answer:
12.1m + 7.6
Step-by-step explanation:
14.2m + 3 - 2.1 + 4.6
Group like terms:
14.2 - 2.1 + 3 + 4.6
Add similar elements:
14.2m - 2.1m = 12.1m=
12.1m + 3+ 4.6
Add the numbers: 3 + 4.6 = 7.6=
12.1m + 7.6.
What is 38% of 12?
Please
Answer: 4.56
Step-by-step explanation:
When you come across questions that says [a of b] this means [ab]
If you are still confused, I can provide some examples:
10% of 10=10%×10=12/3 of 6=2/3 × 6=4-----------------------------------------------------------------------------------------
Given
38% of 12
Solve
38% × 12= 4.56
Hope this helps!! :)
Please let me know if you have any questions
How to find X. Find the value
Answer:
A= 4
Step-by-step explanation:
Nine boys share 2 pizzas equally.
How many pizzas does each boy get?
Answer:
if the two pizzas has 8 slices each and there's 9 boys everyone has one pizza and some leftover
Step-by-step explanation:
Answer:
4/9th??? i think im wrong
the graph of a quadratic function f passes through the origin and the maximum value of f is 5 when x=4 find f
Answer:(-5/16)x^2 +(5/2)x
Step-by-step explanation:
Which statement describes this pair of congruent triangles?
H and N are congruent because they are both 58 degrees,
J and L are congruent because they are both 62 degrees,
and K and M are congruent because they are both 60 degrees.
Therefore triangle HJK is congruent to triangle NLM.
Answer:
The answer is C
Step-by-step explanation:
Kause i said so
LuANN is playing a math game. She chooses 3 cards. The value of her cards is hownn below
First card: -12
Second card: 3
Third card: -5
What was the sum of the value of LuANNS three cards?
Students in a large district's two high schools are offered a "Second Breakfast' program after their first-period class.
The district's nutrition manager is interested in determining if the program is effective. He takes two independent
random samples of days from the previous years, 20 from high school A and 15 from high school B, and calculates
the mean amount of money, in dollars spent for the program. Which of the following statements concerning the
variability of the sampling distribution of the sample mean is correct?
Answer:
A
Step-by-step explanation:
Random samples of days from the previous years, 20 from high school A and 15 from high school B, and calculates
What is the Nutrition?
Nutrition is the study of food and how it works in your body. Nutrition includes all the stuff that's in your food, such as vitamins, protein, fat, and more. It's important to eat a variety of foods, including fruits, vegetables, dairy products, and grains, so you have what you need to grow and be healthy.
How to determine?Students in a large district's two high schools are offered a "Second Breakfast' program after their first-period class.
Random samples of days from the previous years, 20 from high school A and 15 from high school B, and calculates
Learn more about Nutrition:
https://brainly.com/question/26750988
#SPJ2
What are acute and obtuse angles
Answer:
Acute angles are less than 90 degrees and obtuse angles are great than 90 degree angles.
Answer: an acute a is anything lower than 90 degrees. And obtuse is anything higher than 90 degree.
Step-by-step explanation:
Please Help on this Geometry question
Answer:
50 degrees
Step-by-step explanation:
You can see that angle ADC is composed of angle ADB and angle BDC
Angle ADB is 38 degrees and angle BDC is 12 degrees
Therefore angle ADC is 50 degrees
Angle ADC is opposite from angle ABC so they are congruent.
So angle ABC is 50 degrees
Tropical islands have many rainstorms during the afternoon heat. One particular tropical island has a 79% chance of a
rainstorm on any given afternoon. Abraham is planning a weeklong stay on this tropical island. Let X represent the
number of days there is an afternoon tropical storm that week. What are the mean and standard deviation of X?
O v. = 1.47,0, = 1.16
Own=3.5, 0x = 1.16
Oy.=5.53.0. = 1.08
O x =7,0, = 3.5
Answer:
C
Step-by-step explanation:
I got it right on Edge.
Point Q was rotated by -30° (the center of rotation is indicated).
Answer:
What is your question dude???
Step-by-step explanation:
Answer:
Point C
Step-by-step explanation:
I just did It :). it went clockwise which is why it's NEGATIVE 30. If it were point D, it'd probably be about 60 degrees or so.