Help please. I don’t understand and my teacher didn’t bother to teach us any of this and my brain hurts!!!!
Answers
Answer:
23. 42 m^2
24. 144 ft^2
25. 68 cm^2
Step-by-step explanation:
The teacher should not need to spend any time teaching this. The area of the total figure is the sum of the areas of its parts. You already know that. And, you already know how to compute the areas of triangles and rectangles.
__
You may recall that the area of a triangle is ...
A = 1/2bh
and the area of a rectangle with the same base and height is ...
A = bh
So, a triangle with base b and height h has the same area as a rectangle with the same base (b) and half the height (h/2). Recognizing this makes these problems really simple.
__
23. The base of the rectangle and triangle is 7 m. The height of the triangle is 4 m, so its area is equivalent to adding 4/2 = 2 m to the 4 m height of the rectangle. Then the total area is ...
A = (7 m)(4 m +(1/2)(4 m)) = (7 m)(6 m) = 42 m^2
__
24. Since there are two identical triangles of height 5, their total area is equal to that of a rectangle of height 5.
A = (12 ft)(7 ft +5 ft) = 144 ft^2
__
25. The 5 cm height of the triangle makes it have an area equivalent to a rectangle 5/2 cm high.
A = (8 cm)(6 cm +5/2 cm) = 68 cm^2
Note: we have read the fuzzy numbers as 8 cm wide, 6 cm high for the rectangle, and 5 cm high for the triangle. If your figure is different, please use the appropriate numbers in the calculation.
Related Questions
(9+33-6)-3-7?
can someone also explain it i don't really understand :( thx!
Answers
Answer:
26
Step-by-step explanation:
APPLY PEMDAS:
Evaluate the numbers in the parentheses before evaluating the whole equation.
[tex](9+33-6)-3-7\\\\36 - 3 -7\\\\33-7\\\\\boxed{26}[/tex]
Hope this helps.
What is the equation of the following line written in general form?
Answers
Answer:
[tex] y = \frac{ - 4}{5} x + 7[/tex]
A square has a perimeter of 28 ft. What is the length of each side? and it is in ft
Answers
Answer: 7 feet
Step-by-step explanation:
Since all 4 sides of a square are equal, you do 28 / 4 = 7 feet, which is the answer.
Answer:
d
Step-by-step explanation:
Which is the most reasonable way to estimate 26% of 88?
One-fifth(90)
One-fifth(80)
One-fourth(90)
One-fourth(80)
Answers
Answer:
1/4(90)
Step-by-step explanation:
The most reasonable way to estimate 26% of 88 is one-fourth of 90. Therefore, the correct option is C.
What is percentage?Percentage is defined as a given part or amount in every hundred. It is a fraction with 100 as the denominator and is represented by the symbol "%".
Given that, 26% of 88.
Now, 26/100 ×88
= 0.26×88
= 22.88
A) 1/5 ×90
= 18
B) 1/5 ×80
= 16
C) 1/4 ×90
= 22.5
D) 1/4 ×80
= 20
Therefore, option C is the correct answer.
To learn more about the percentage visit:
brainly.com/question/24159063.
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Factor k^2-81...............
Answers
Answer:
[tex](k+9)(k-9)[/tex]
Step-by-step explanation:
[tex]k^2-81[/tex]
[tex]k^2-9^2[/tex]
Apply the difference of squares formula: [tex]x^2-y^2=\left(x+y\right)\left(x-y\right)[/tex]
Thus, [tex]k^2-9^2=\left(k+9\right)\left(k-9\right)[/tex]
can someone help mee :(((?
Answers
Step-by-step explanation:
2√48= 13.86
3√147= 36.37
Perimeter: 13.86+13.86+36.37+36.37= 100.46
Help please I don’t know the answer and the teacher didn’t explain
Answers
Answer:
Step-by-step explanation:
[tex]\frac{-4d^{2}+15d^{2}}{5}=\frac {11d^{2}}{5}\\\\=\frac{11*1^{2}}{5}\\\\=\frac{11}{5}\\\\=2\frac{1}{5}[/tex]
Select all sets in which the number -3/4
is an element
A. rational numbers
B. integers
C. natural numbers
D. whole numbers
E. irrational numbers
Freal numbers
Answers
Answer:
Rational numbers is the correct answer for this.
Step-by-step explanation:
Rational numbers is the best and correct answer.
Aaron wants to make as many gluten-free, low-carb cupcakes as he can for a bake sale. His recipe for 12 such cupcakes requires ⅜ of a cup of cocoa. Assuming Aaron has enough of the remaining ingredients, which of the following is closest to the number of cupcakes that he could make if he has 2 cups of cocoa? A)10 B)30 C)60 D)100
Answers
Answer:
I believe it is C
Step-by-step explanation:
First, I decided to use the proportion method. (Before I use this method, let's change [tex]\frac{3}{8}[/tex] into a decimal. So, that will be 0.375.
We know that we can cross multiply in a proportion
[tex]\frac{0.375 cups}{12 cupcakes} = \frac{2cups}{x}[/tex]
0.375x = 24
x = 64
round to tens
60
The number of cupcakes that he could make if he has 2 cups of cocoa is C) 60.
What is proportion?A proportion is an equation in which two ratios are set equal to each other.
Now, it is given that,
12 such cupcakes requires ⅜ of a cup of cocoa
So ratio, cup of cocoa : cupcakes = ⅜ : 12
⇒ cup of cocoa / cupcakes = ⅜ / 12
Now, let x be the number of cupcakes that he could make if he has 2 cups of cocoa
So ratio,cups of cocoa : number of cupcakes = 2 : x
Hence,By proportionality we get,
cup of cocoa : cupcakes = cup of cocoa : cupcakes
⅜ : 12 = 2 : x
⅜ / 12 = 2 / x
⇒ 0.375/12 = 2 / x
⇒ x = (2x12)/0.375
⇒ x = 24/0.375
⇒ x = 64
hence it is closest to the number 60.
So,The number of cupcakes that he could make if he has 2 cups of cocoa is C) 60.
More about proportion :
https://brainly.com/question/27960888
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NEED HELP ASAP SHOW WORK PLSSSS
Answers
Answer:
Hey there!
6x+1+3=8x+1
6x+4=8x+1
6x+3=8x
3=2x
x=1.5
6(1.5)+1
10
SR is 10 units long.
Let me know if this helps :)
Need help with this 8/4+3/4=?
Answers
Answer:
11/4 or 2 3/4
Step-by-step explanation:
add numerators keep the same denominator
Answer: 2.75
8/4+3/4
this will give you 2.75 hope this helped
(let me know if it did)
(−2/3)x(5/4) help plz
Answers
Answer:
[tex]-\frac{5}{6}[/tex]
Step-by-step explanation:
Write it out: [tex]-\frac{2}{3}[/tex] × [tex]\frac{5}{4}[/tex] 3 × 4 = 12-2 × 5 = -10Put them together: [tex]-\frac{10}{12}[/tex] Simplify: -10/12 = -5/6I hope this helps!
Answer:
[tex]\frac{-10}{12} ,\frac{-5}{6}[/tex]
Step-by-step explanation:
Start with:
[tex]\frac{-2}{3}[/tex] × [tex]\frac{5}{4}[/tex]
Multiply your numerators.
[tex](-2)(5)=-10[/tex]
Now, multiply your denominators.
[tex](3)(4)=12[/tex]
Let's transfer those numbers into a fraction.
[tex]\frac{-10}{12}[/tex]
You may need to simplify.
Divide by the greatest common factor. In this case, that would be [tex]2[/tex].
[tex]-10[/tex] ÷ [tex]2=-5[/tex]
[tex]12[/tex] ÷ [tex]2=6[/tex]
Put those numbers back into the fraction.
[tex]\frac{-5}{6}[/tex]
please hurry!! the graph of y= 2/x - 1 is shown which statement about the graph is accurate
A. the x-intercept or the graph (2, 1)
B. the graph has no y-intercepts
C. the y-intercept of the graph is (2, 0)
D. the graph has no x-intercepts
Answers
Answer:
B. The graph has no y-intercepts
Step-by-step explanation:
We see that we have vertical and horizontal asymptotes.
We also see that the right side of the graph has an x-intercept of (2, 0).
Therefore, A and D are incorrect.
We use the vertical asymptote x = 0 to get our answer B, as we will never cross the y-axis as x approaches negative and positive infinity.
Find the distance between points (-1,-4) and (2,2)
Answers
Answer:
5
Step-by-step explanation:
Si una pulgada equivale a 2,54cm, ¿Cuantas pulgadas mide una barra de 31,75 cm?
Answers
Answer:
12.5 pulgadas
Step-by-step explanation:
31,75 cm * (1 pulgada)/(2,54 cm) = 12.5 pulgadas
please help meee. i honestly do not get what is being posted and need help
Answers
Karina and Perry are cleaning up litter in the park for community service hours. Karina and Perry both claim they have covered the greatest area. Who is correct? Justify your answer using mathematical reasoning.
Answers
Answer:
Perry is correct, she covered the greatest area = 18 square units.
Step-by-step explanation:
Looking at the attached diagram, the shapes are rectangular and they are on grid or graph
Note that on a graph:
1 square box = 1 unit
Area of rectangle = Length × Width
For Karina
The Width = 3 units
The length = 4 units
The area which Karina covered = 3 units × 5 units
= 15 square units
For Perry
The Width = 9 units
The length = 2 units
The area perry covered = 9 units × 2 units
= 18 square units
Therefore, Perry is correct, she covered the greatest area = 18 square units.
If a car is traveling at 50kph, how long would it take for the car to travel 12.5km?
Answers
Answer:
4 km
Step-by-step explanation:
T = time
D = distance
S = speed
the forumla to find the distance is
T * S = D
manipulate the equation for this problem:
D/S = T
Plug-in the known values
D = 12.5 km
S = 50kph
12.5km/50kph
cancel units and simplify
4 km
Pls help!!!!!!! Determine the lowest common denominator for each sum or difference.
X
7/6 + (-5/12)
Common Denominator: 10
Common Denominator: 12
Common Denominator: 24
X
13/24 + 7/12
3/2 - 4/5
x
1/8-5/3
x
-3/4+ (-2/3)
x
5- 7/10
Answers
Answer:
Common Denominator 10: 5-7/10 and 3/2-4/5
Common Denominator 12: -3/4 + (-2/3) and 7/6 + (-5/12)
Common Denominator 24: 1/8-5/3 and 13/24+7/12
Hopefully This Helps You :)
Answer:
Common Denominator 10: 5-7/10 and 3/2-4/5
Common Denominator 12: -3/4 + (-2/3) and 7/6 + (-5/12)
Common Denominator 24: 1/8-5/3 and 13/24+7/12
Step-by-step explanation:
Identify the range of the function shown in this graph
Answers
Answer:
[tex]0 \leqslant y \leqslant 5[/tex]
Problem ID: PRABG4QG
How many inches of snow will fall in 24 hours if it continues to snow at this rate?
Do not include units (inches) in your answer.
Type your answer below as a number (example: 5, 3.1, 4 1/2, or 3/2):
Submit Answer
to search
Answers
Answer:
the answer is 48
Step-by-step explanation:
Which answer is the simplified version of this : 5 exponent 3 x 25
Answers
Answer:
3,125
Step-by-step explanation:
[tex] {5}^{3} \times 25 \\ = {5}^{3} \times {5}^{2} \\ = {5}^{2 + 3} \\ = {5}^{5} \\ = 3,125[/tex]
r + 4 > 8 ; r= 2 i need help asap
Answers
Answer:
Step-by-step explanation:
2 + 4 > 8
6 > 8
not true
Which of the equations below is the simplified version of 3[2 - 2(3x + 1)] = 4(3x - 5)
Answers
Answer:
option 4) -18x = 12x-20
Step-by-step explanation:
3[2-2(3x+1)] = 4(3x-5)3[2-6x-2] = 12x - 203[-6x] = 12x - 20-18x = 12x-20FIRST TO ANSWER GETS BRAINLIEST!!!
Answers
Answer:
x = 3
y = 2
Step-by-step explanation:
Solve by factoring
0 = x² - 4x + 4
Answers
x² - 4x +4 = 0
x² - 2(x)(2) + 2² = 0 (a=x, b=2)
(x-2)² = 0
Evaluate. 7 x (-7 + 15)
Answers
Answer:
56
Step-by-step explanation
f(x) = 2x and h(x) = 2x^2;Find f • h(3)
Answers
Answer:
36
Step-by-step explanation:
start by finding x for h(x)
2(3)^2
18
f(x) = 2(18)
36
Solve for n.
F=9/5(n-67)
Answers
9/5 F = N - 67
Add 67 to both sides
9/5 F + 67 = N
Hope this helped
Divide both sides by 9/5
9/5 F = N - 67
Add 67 to both sides
9/5 F + 67 = N
Hope this helped
6 less than twice a number.
Answers
Answer:
X × 2 - 6
Step-by-step explanation:
"Twice a number" means that it needs to be multiplied by two and "6 less than" means you need to subtract 6 at the end.