Answer:
Two negative symbols combine to make a positive sign.
A) 7 - (-3)
B) a - (-5)
C) a - (-b)
A) 7 + 3 = 10 - (the difference is 10, subtract 0).
B) a + 5 = a - (-5) (difference is 'a', subtract -5).
C) a + b = a - (-b) (difference is 'a', subtract -b).
How to write each expression as a difference
To compose each expression as a difference, we ought to discover a proportionate expression within the shape of "x - y". Let's do that for each expression:
A) 7 + 3:
To speak to this as a contrast, able to rework it as follows:
7 + 3 = 10 -
B) a + 5:
To speak to this as a contrast, able to revamp it as takes after:
a + 5 = a - (-5)
C) a + b:
To speak to this as a contrast, able to rework it as takes after:
a + b = a - (-b)
In each case, we changed the given expansion expression into a contrast by including or subtracting a term with the inverse sign (e.g., including -5 to speak to +5 as a contrast).
Learn more about expression here:
https://brainly.com/question/1859113
#SPJ2
sum of all three angles of a Triangle is
Answer:
180°
Step-by-step explanation:
the angles in a triangle add up to 180°
find the missing side length
1. cross multiply
3/1 = m/5
15 = m
m = 15
Triangle P Q R is shown. Angle P Q R is a right angle. The length of Q R is p, the length of R P is q, and the length of P Q is r. Which sine ratios are correct for ΔPQR? Check all that apply.
A. sin (P) = StartFraction r Over q EndFraction
B. sin (P) = StartFraction p Over q EndFraction
C. sin (Q) = StartFraction r Over p EndFraction
D. sin (R) = StartFraction q Over r EndFraction
E. sin (R) = StartFraction r Over q EndFraction
Step-by-step explanation:
answer is in the picture
Option A (sin(P) = r/q), Option C (sin(Q) = r/p), and Option D (sin(R) = q/r) are correct sine ratios for ΔPQR. Option B (sin(P) = p/q) and Option E (sin(R) = r/q) are not correct sine ratios for ΔPQR.
To determine the correct sine ratios for ΔPQR, let's recall the definitions of sine for each angle in a right-angled triangle.
In a right-angled triangle ΔPQR:
1. sin(P) = opposite side / hypotenuse = r / q (Correct) [By definition of sine in a right triangle, sin(P) = opposite/hypotenuse]
2. sin(Q) = opposite side / hypotenuse = r / p (Correct) [By definition of sine in a right triangle, sin(Q) = opposite/hypotenuse]
3. sin(R) = opposite side / hypotenuse = q / r (Correct) [By definition of sine in a right triangle, sin(R) = opposite/hypotenuse]
Option A (sin(P) = r/q), Option C (sin(Q) = r/p), and Option D (sin(R) = q/r) are correct sine ratios for ΔPQR. Option B (sin(P) = p/q) and Option E (sin(R) = r/q) are not correct sine ratios for ΔPQR.
Learn more about right-angled triangle here
https://brainly.com/question/21472842
#SPJ2
Find the area and perimeter of the triangle. See picture for problem. Please and thank you so very much!(:
Answer:
Area = 2.28 sq km
Perimeter = 13.7 km
Step-by-step explanation:
[tex]A(\triangle)=\frac{1}{2}(1.2)(3.8)[/tex]
[tex]\implies A(\triangle)=(1.2)(1.9)[/tex]
[tex]\implies \boxed{\red{\bold{A(\triangle)=2.28\:km^2}}}[/tex]
[tex]P(\triangle)=7+1.2+5.5[/tex]
[tex]\implies \boxed{\purple{\bold{P(\triangle)=13.7\: km}}}[/tex]
A spinner has 8 equal sized spaces numbered 1-8. If the spinner is spun once, find the probability that it lands on an even number or a number greater than 6.
The probability that it lands on an even number or a number greater than 6 are 1/2 and 1/4 respectively
Data;
Number of sides in the spinner = 8Number of even numbers from 1 - 8 = 4Numbers greater than 6 = 2ProbabilityThe probability of an event occurring is the ratio between number of possible outcomes to the total number of sample space.
a)
The probability of having an even number is
[tex]P = \frac{4}{8} = \frac{1}{2}[/tex]
b)
The probability of having a number greater than 6 is
[tex]P = \frac{2}{8} = \frac{1}{4}[/tex]
The probability that it lands on an even number or a number greater than 6 are 1/2 and 1/4 respectively
Learn more on probability here;
https://brainly.com/question/24756209
Find the value of y in the solution to the system of equations shown. y=5x+3 2y=18x-10
Answer:
13
Step-by-step explanation:
To find the value of y, we will use the substitution method
Plug the y of the top equation into the other equation
2(5x + 3) = 18x - 10
Distribute the 2 into the equation inside the parenthesis
10x + 6 = 18x - 10
Subtract 10x from both sides
10x + 6 = 18x - 10
-10x -10x
6 = 8x - 10
Add 10 to both sides
6 = 8x - 10
+10 + 10
16 = 8x
Divide both sides by 8
16/8 = 8x/8
x = 2
Sub the 2 in the place of x into one of the original equations. We will use the first one.
y = 5(2) + 3
y= 10 + 3
y = 13
Answer:
y = 13
Step-by-step explanation:
y = 5x + 3
2y = 18x- 10
substitution (substituting y with the y value given):
2( 5x + 3 ) = 18x - 10
solve:
10x + 6 = 18x - 10
10x - 18x = -10 - 6
-8x = -16
x = 2
now plug in the x:
y = 5( 2) + 3
y = 10 + 3
y = 13
the width of a rectangle is 2 units less than the length. the area of the rectangle is 63 units.what is the length, in units, of the rectangle
Answer: 9
Step-by-step explanation:
Which graphs show a system of equations with infinitely many solutions?
Help asap!!
Answer:
Systems with infinitely many solutions are equations that are the same (on top of one another)
Ex:
4x=4 and 2x=2
4x=0, 5x=0
The number of boys of grade 6 students is 220.This is 40more than number of boys grade seven students. How many grade seven boy students are enrolled
Answer:
Given
no of Grade 6 students = 220
no of Grade 7 students = 40 more than grade 6 students
Step-by-step explanation:
boys Grade 7 students = no of Grade 6 students - 40 more than grade 6 students
boys Grade 7 students = 220 - 40
boys Grade 7 students = 180 grade 7 boy students are enrolled
Therefore, 180 grade 7 boy students are enrolled.
Math, Please Help 15 points
Answer:
the second one
Step-by-step explanation:
Estimate by rounding ONLY the prime numbers to the nearest ten
193 + 228 + 149
The following table shows a portion of a five-year amortization schedule. A 5-year amortization schedule. Loan amount or principal: 10,900 dollars. Interest rate on loan: 10. 95 percent. A 5-column table with 6 rows. Column 1 is labeled Month with entries 15, 16, 17, 18, 19, 20. Column 2 is labeled Payment with all entries 236. 72. Column 3 is labeled Principal with entries 155. 87, 157. 29, 158. 73, 160. 18, 161. 64, 163. 11. Column 4 is labeled Interest with entries 80. 85, 79. 43, 77. 99, 76. 54, 75. 08, 73. 61. Column 5 is labeled Balance with entries 8,704. 27, 8,546. 98, 8,388. 25, 8228. 07, 08. 66. 43, 7,903. 32. What percent of the payments made were due to interest for the months shown? a. 30. 9% b. 32. 6% c. 62. 5% d. 63. 4%.
The percentage of the payments made were due to interest is 32.6 %. Then the correct option is B.
What is the percentage?The amount of something is expressed as if it is a part of the total which is a hundred. The ratio can be expressed as a fraction of 100. The word percent means per 100. It is represented by the symbol ‘%’.
The following table shows a portion of a five-year amortization schedule.
A 5-year amortization schedule.
Loan amount or principal: 10,900 dollars.
The interest rate on loan: 10. 95 percent.
The table will be
Month Payment Principal Interest Balance
15 236.72 155.87 80.85 8704.27
16 236.72 157.29 79.43 8546.98
17 236.72 158.73 77.99 8388.25
18 236.72 160.18 76.54 8228.07
19 236.72 161.64 75.08 80.66.43
20 236.72 163.11 73.61 7903.32
Total payment = 6 × 236.72 = $ 1420.32
Total interest = 80.85 + 79.43 + 77.99 + 76.56 + 75.08 + 73.61
Total interest = $ 463.38
Then the percentage will be
[tex]\rm Percentage = \dfrac{463.38}{1420.32}*100\\\\Percentage = 32.625 \approx 32.6\ \%[/tex]
More about the percentage link is given below.
https://brainly.com/question/8011401
Kyle made a planter box that is 4 4 meters long, 1.5 1.5 meters wide, and 2 2 meters high. They want to know what volume of potting soil they need to fill the box. Which formula can Kyle use to find the correct volume as a product of the edge lengths?
Answer:
(4 * 1.5) * 2 = 12
Step-by-step explanation:
A square pyramid has a height of 12 units and a volume of 256 units3. If a square prism has the same the base area and volume as the square pyramid, what is its height? 12 units 10 units 4 units 3 units.
A square prism has the same the base area and volume as the square pyramid is 4 units.
What is the volume of square pyramid?The volume of a square pyramid is,
[tex]a^{2} *h/3[/tex]
[tex]256=a^{2} *12/3[/tex]
[tex]256=4 a^{2}[/tex]
[tex]256/4=a^{2}[/tex]
[tex]64=a^{2}[/tex]
[tex]a=8[/tex]
Now we know that the square is 8 by 8.
A square pyramid has a height of 12 units and a volume of [tex]256 units^3[/tex]
What is the volume of of a square prism?The volume of a square prism is a²h
[tex]V=a^{2} h[/tex]
[tex]256=64h[/tex]
[tex]256/64=h[/tex]
[tex]h=4[/tex]
The height is 4 unit
Also, a square pyramid is 1/3 the volume of a square prism.
[tex]\frac{12}{3}=4[/tex]
Therefore,we get a square prism has the same the base area and volume as the square pyramid is 4 units.
To learn more about the area of the square prism visit:
https://brainly.com/question/3295111
Answer:
4 units
Step-by-step explanation:
I got it right on the test :)
The number 180 is the ?
Answer:
sorry there's no explanation IN this question
Answer:
Inconclusive.
Step-by-step explanation:
This equation is not understandable due to the lack of clarity, thank you.
A jewelry store has many pieces of jewelry for sale.
pins 1
bracelets 62
pairs of cufflinks 11
rings 2
pairs of earrings 4
What is the probability that a randomly selected piece of jewelry will be a pair of earrings?
Write your answer as a fraction or whole number.
P(pair of earrings) =
Please can someone answer this for me?
Answer:
1.
$.33
$3
2.
all the answers can be found when the rate is known which is
grapes are sold at $3 per pound
Step-by-step explanation:
$6 ÷ 2 pounds = $3 per 1 pound
this means 1 pound of grapes is $3
next row
1 ÷ 3 = $.33
3rd row
1 multiplied by 3 = $3
2.
all the answers can be found when the rate is known which is
grapes are sold at $3 per pound
An incident ray strikes a boundary at a 72. 5-degree angle, resulting in an angle of refraction of 39. 6 degrees. The index of refraction of the first medium is 1. 3. What is medium 1? What is medium 2?.
Refractive index is the ratio of sin(i) to sin (r). Medium 2 is sodium chloride with a refractive index of 1.54.
What is Refractive Index?A material's refractive index (sometimes called refraction index or index of refraction) is a dimensionless quantity that specifies how quickly light passes through it.
As we know that the Refractive index is the ratio of sin(i) to sin (r), and it can be represented as,
[tex]\rm Refractive\ Index = \dfrac{Sin(i)}{Sin(r)}[/tex]
where
i is the incident angle and
r is the refraction angle.
Now, the refractive index can be written as for the given medium can be written as,
[tex]\rm Refractive\ Index = \dfrac{Sin(i)}{Sin(r)}\\\\[/tex]
[tex]\rm Refractive\ Index = \dfrac{Sin(79.5)}{Sin(39.6)}=1.542[/tex]
Now, if we take the ratio of the refractive index of the two mediums, then
[tex]\rm 1.542 = \dfrac{n}{1.0003}\\\\n = 1.542 \times 1.0003\\\\n= 1.5425\ \approx 1.54[/tex]
Hence, Medium 2 is sodium chloride with a refractive index of 1.54.
Learn more about Refractive Index:
https://brainly.com/question/17156275
Answer:
What is medium 1?
air
What is medium 2?
lucite
Step-by-step explanation:
i need help !
[tex]3\sqrt{5} +5\sqrt{15}[/tex]
Answer:
26
Step-by-step explanation:
SORRY IF IM WRONG
Rick and Laurie have three dogs. Diesel weighs 89 pounds 12 ounces. Ebony weighs 33 pounds 14 ounces less than Diesel. Luna is the smallest at 20 pounds 2 ounces. What is the combined weight of the three dogs in pounds and ounces?
Let's get all of the dogs weights displayed:
Diesel: 89 Pounds 12 Ounces
Ebony: 55 Pounds 14 Ounces
Luna: 20 Pounds 2 Ounces
Total Pounds: 164
Total Ounces: 28
Total Weight: 165 Pounds and 12 Ounces
Find the area of the circle below. You must show all work to get full credit. Don't forget to label your answer.
Answer:
Area ≈ 1256 [tex]in^{2}[/tex]
Step-by-step explanation:
The formula to find the area of a circle is [tex]\pi r^{2}[/tex]
the diameter of this circle is 40 inches. The radius is half of that, 20 inches.
[tex]\pi 20^{2}[/tex] = [tex]400 \pi[/tex]
[tex]400\pi[/tex] ≈ 1256
Area ≈ 1256 [tex]in^{2}[/tex]
plssss helppp i have a test tomorrow
Answer:
2 ft³
Step-by-step explanation:
Volume of a box = length × width × height
Length = 1 ft
width = 1 ft
height = 2 ft
Volume = 1 × 1 × 2 = 2 ft³
Help,Vector
Thanks!!
Find the surface area of the prism.
Answer: 26
Step-by-step explanation:
I would say 26 because you multiplying 3 and 4 and then add whatever number you get for 8 and 5.
Sean packs 15 pounds of nuts in bags. Each bag has 1/4 pound of
nuts. Which equation shows the number of bags Sean packed with
all the nuts?
A. 15 divided by 1/4 = 15/4
B. 13 x 1/4 = 15/4
C. 15 x 1/4 = 60
D. 15 divided by 1/4 = 60
Answer:
15 multiply by quarter is equal yo 60
You are shooting arrows at a target with three rings: there is a circle with 4 inch radius, a ring around it with 8 inch radius, and a ring around that with a 12 inch radius. If your 3 arrows will hit the target somewhere uniformly at random, what is the probability that you land exactly one shot in each of the three rings
The probability that you land exactly one shot in each of the three rings is 0.122
How to get the probability?
The probability of hitting each section will be the quotient between the area of the section and the total area of the target.
The area of the target is:
A = 3.14*(12 in)^2 = 452.16 in^2
The area for the smallest circle is:
A₁ = 3.14*(4 in)^2 = 50.24 in^2
So the probability of hitting the smallest circle is:
p₁ = A₁/A = (50.24/452.16) = 0.11
For the first ring, the area is:
A₂ = 3.14*(8in)^2 - 50.24 in^2 = 150.72 in^2
So the probability of hitting this ring is:
p₂ = (150.72)/(452.16) = 0.33
The probability of hitting the final ring is 1 minus the probabilities of hitting the two other regions, so we have:
p₃ = 1 - 0.11 - 0.33 = 0.56
The joint probability of hitting one arrow in each region, is given by the product between the individual probabilities for each region times the permutations (the permutations for 3 arrows are 3! = 3*2*1 = 6)
So the probability is:
P = 0.11*0.33*0.56*6 = 0.122
If you want to learn more about probability, you can read:
https://brainly.com/question/251701
Please help me out hurry!
Answer:
16?
Step-by-step explanation:
1 = 4
2 = 7
3 = 10
4 = 13
5 = 16
Pat’s Pizza Place sells large pies for $12 with a charge of $2 for each topping. If Reagan only has a $20 bill to spend on a pizza, which graph best represents the number of toppings she can afford to add to her pie? A number line going from 2 to 7. A solid circle is at 4. Everything to the left of the circle is shaded. A number line going from 2 to 7. A solid circle is at 4. Everything to the right of the circle is shaded. A number line going from 2 to 7. A solid circle is at 6. Everything to the left of the circle is shaded. A number line going from 2 to 7. A solid circle is at 6. Everything to the right of the circle is shaded.
Answer:
A number line going from 2 to 7. A solid circle is at 4. Everything to the left of the circle is shaded.
Step-by-step explanation:
The pizza itself will cost $12, and because toppings cost $2 apiece, the maximum amount of toppings that can be used is 4.
4·2=8
8+12=20
So, by putting a closed circle on 4, going to the left, the line shows that she can buy anywhere from 0-4 topping on her pizza.
Answer:
A
Step-by-step explanation:
What is the recursive formula for this sequence?
14, 18, 22, 26, 30, .
Answer:
4
Solving steps:
In order to find the sequence substract the previous
=> 18 - 14
=> 4
So, 14 + 4 = 18
18 + 4 = 23
etc.
Help, will give 28 points
Answer:
you are crazy
Step-by-step explanation:
that is a whole assignment