Answer:
7
Step-by-step explanation:
So, substitute in your 4 for r, 2(3) + 1. Multiply 2 and 3 to get 6 and then add a to get 7. I hope this helps :)
a number m decreased by 9 is 6
Answer:
m-9=6
m=6+9=15
I think.......
A vendor sells hot dogs and bags of potato chips. A customer buys 3 hot dogs and 5 bags of potato chips for $9.50. Another customer buys 2 hot dogs and 5 bags of potato chips for $8.00. Find the cost of each item.
Step-by-step explanation:
3d + 5p=9.50
2d + 5p=8
1 hot dog cost $1.50
2 × 1.50 + 5p = 8
3 + 5p = 8
5p = 8 - 3
5p = 5
p = 1
1 bag of potato chips cost $1.00
how to I do Ratios with cross multiplying
Answer:
To cross multiply, multiply the numerator from one side with the denominator of the other side and put that product on one side of the equation. Do the same with the other numerator/denominator and put that on the other side. From there, solve for the unknown part.
So your ratio might look like this:
4/6=x/12
6x=12(4)
6x=48
x=8
So in this case 4/6 would equal 8/12.
HTH :)
Jabari deposited $300 in a savings account. Each month thereafter, he deposits $20 into the account. Write a formula to represent this sequence. Begin you formula with an=
Write an equation in point-slope form of the line that passes
through the given points.
2,-2). (5.7)
Answer:
Step-by-step explanation:
(7 + 2)/(5 - 2)= 9/3= 3
y + 2 = 3(x - 2)
y + 2 = 3x - 6
y = 3x - 8
What is this answer -1/2 + 1/10
Answer:
4536363646
Step-by-step explanation:
Use the foil method to check your answer 3(x+1)(x+2)
Answer: Your input: multiply (x+1)(x+2) using FOIL.
((x)+(1))((x)+(2))=(x)⋅(x)First+(x)⋅(2) Outer+(1)⋅(x) Inner+(1)⋅(2) Last=
=(x2)+(2x)+(x)+(2)=
=x2+3x+2.
Answer: (x+1)(x+2)= only look at this
3 of 5
In a group of 30 pupils, 13 play the flute only.
1 plays the piano only.
4 play both instruments.
How many pupils play neither instrument?
Answer: 6 or 0.6
Step-by-step explanation:
strawberries are $1.95 a pound. Write an expression for p pounds of strawberries
Answer:
dollar
Step-by-step explanation:
Answer:
1.95x
Step-by-step explanation:
x equals the # of pounds of the strawberries
To go to the state park. Mary's family had to pay $3 for the car. plus $2 for each person in the car. Write an expression that could be used to find the cost for any number of people. Let x represent the number of people in the car.
Answer:
3+2x or 2x+3
Step-by-step explanation:
Which answer choice best fits the given word;
1- Consecutive is:
A) A set of angles that have a sum of 90*
B) One after the other
C) Match or agree almost exactly
D) A straight line
2- Complementary is:
A) One after the other
B) A set of angles that have a sum of 90*
C) A straight line
D) Match or agree almost exactly
3- Corresponding is:
A) A straight line
B) A set of angles that have a sum of 90*
C) One after the other
D) Match or agree almost exactly
4- Congruent is:
A) Exactly the same
B) A straight line
C) A set of angles that have a sum of 90*
D) One after the other
5- Scalene is:
A) 2 sides equal
B) All sides equal
C) No sides equal
D) None of the above
6- Equilateral is:
A) No sides equal
B) All sides equal
C) 2 sides equal
D) None of the above
7- Isosceles is:
A) 2 sides equal
B) No sides equal
C) All sides equal
D) None of the above
8- Acute is:
A) less than 90*
B) more than 90*
C) exactly 90*
D) exactly 180*
9- Obtuse is:
A) exactly 180*
B) more than 90*
C) exactly 90*
D) less than 90*
10- Bisect is:
A) all of the choices
B) cut in half
C) divide into equal parts
D) two sections
Answer: Sometimes, two angles are a part of each other or are connected to each other. These angles are called angle pairs.
Let's look at two special types of angle pairs, supplementary angles or complementary angles.
Supplementary angles are two angles whose sum is equal to 180∘. In other words when you add the measure of one angle in the pair with the other angle in the pair, they equal 180 degrees.
These two angles are supplementary because together they form a straight line. You can also tell that they are supplementary because when you add their angle measures the sum is equal to 180 degrees.
120+60=180∘
Complementary angles are a pair of angles whose sum is 90∘. Here is an example of complementary angles.
If you add up the two angle measures, the sum is equal to 90 degrees. Therefore, the two angles are complementary.
You can find missing angle measures by using information about supplementary and complementary angles.
Let's look at an example.
Find the measure of x.
First, identify that these two angles are supplementary. They form a straight line. The total number of degrees in a straight line is 180. Therefore, you can write the following equation to solve.
130+xx=180=50∘
The missing angle is equal to 50∘.
Here the two angles are complementary. Therefore the sum of the two angles is equal to 90 degrees. Write an equation and solve for the missing angle measure.
75+xx=90=15∘
The missing angle measure is equal to 50∘.
Examples
Example 1
Earlier, you were given a problem about Paul and the house.
He has an angle pair that is formed by two 90 degree angles. What type of angle pair is formed when two 90 degree angles are combined?
First,add the two angles to calculate their sum.
90 + 90 = 180
Then, identify which angle pair adds up to 90 degrees.
Supplementary angles
The answer is that the pair are supplementary angles.
Example 2
Identify the angle pair as complementary or supplementary.
First, add the two angles to calculate their sum.
75 + 105 = 180
Then, identify which angle pair adds up to 180 degrees.
Supplementary angles
The answer is supplementary angles.
Write whether each pair is complementary or supplementary.
Example 3
Identify the angle pair as complementary or supplementary.
If the sum of the angles is equal to 180 degrees.
First, identify which angle pair adds up to 180 degrees.
Supplementary angles
The answer is supplementary angles.
Example 4
Identify the angle pair as complementary or supplementary.
If one angle is 60 degrees and the other angle is 120 degrees.
First, add the two angles together to find the sum.
60 + 120 = 180
Then, identify which angle pair adds up to 180 degrees.
Supplementary angles
The answer is supplementary angles.
Example 5
Identify the angle pair as complementary or supplementary.
First, add the two angles to calculate their sum.
30 + 60 = 90
Then, identify which angle pair adds up to 90 degrees.
Complementary angles
The answer is that the pair are complementary angles.
Step-by-step explanation:
What is true about the area of a circle given radius r, a rational number?
O Area of the circle is equal to its circumference.
O Area of the circle is irrational.
None of the above.
O Area of the circle is rational,
Answer:
b
Step-by-step explanation:
HELP ME THIS I DUE 30 minutes
Step-by-step explanation:
3. = 1/2
4. = 1
5. = 0
6 . = 6/9 = 2/3
7. = 7/7 = 1
8. = 10/16 = 5/8
12. = 3/5
13.= 4/20.= 1/5
plz mark my answer as brainlist plzzzz.
hope this will be helpful to you ☺️.
The harbor at Green Top Lake has a lot of algae. However, as it gets colder, algae starts dying. At the beginning of fall, there 150,000 square feet of algae. Suppose half of the algae dies per month. What is the relationship between time and amount of algae?
discrete or continuous
Answer:
Discrete.
If it was continuous, probably all the algae would have died.
Discrete
It is the amount of time of an event. Fall is a type of event, which lasts for a period of time.
If two lines in a linear system __________, they have exactly one point in common.
intersect.
because yes.
Answer:
are coplanar and non-parallel (?)
What is the equation of the line that passes through (5,-3) and (3,7)
Answer:
-5x +22
Step-by-step explanation:
Please help due today
Answer:
60 - 1
120 -2
180 - 3
240 - 4
Step-by-step explanation:
If your heartbeats 60 times per minute, then just increase then it must beat 120 times in 2 minutes
60 - 1
2(60-1)
120 - 2
A sweatshirt that was originally priced at $42.50 has been marked down to $34.00.
What is the percent decrease?
80%
25%
15%
20%
Answer:
the answer is 20%.
Step-by-step explanation:
all you have to do is multiply 42.50x.20 and it gives you 8.5. to check your answer you subtract 34.00 from 42.50 and you get 8.5 as well. hope this helps!
Answer:
20%
Step-by-step explanation:
Hope it helps! :)
Work out the percentage change when a price of £80 is increased to £100
Answer:
25%
Step-by-step explanation:
100 - 80 = 20 (change)
change / original price X 100
20 / 80 = 0.25
0.25 X 100 = 25
Write the equation of the line given a slope of 0 through the point (5, -7)
Answer:
y=-7
Step-by-step explanation:
y-y1=m(x-x1)
y-(-7)=0(x-5)
y+7=0
y=0-7=-7
8(6g- 5h+8) I need help.
Answer:
The answer is 48g-40h+64
What is the 7th term of the sequence below? 2, 10, 50, 250, …
Please help I can’t figure this out
Answer:(x + 2) 5
Step-by-step explanation:Btw put
the 5 as ur expoent
WILL GIVE BRAINLIEST-
Complete the table to multiply x^2 - 4x + 4 and 6x + 3.
Tell which property the statement 7(4+a)=7(a+4) illustrates
Answer:
The commutative or associative property! Hope that helps!
Step-by-step explanation:
CAN YOU PLS HELP ME I BEG YOU I WILL GIVE YOU BRAINLET ND SIXTY POINTS pllls i beg you
math!!!
✨ Easy points if you know how to do slope well ✨
Answer:
I believe it's A
Step-by-step explanation:
Answer:
its y=x
Step-by-step explanation:
In the diagram, the radius of the outer circle is 2x em and the radius of the inside circle is 6 cm. The area of the shaded region is 220 cm? What is the value of x2
Answer:
Answer: 8 (second choice)
Step-by-step explanation:
Area of a Circle
Given a circle of radius r, the area is calculated by the formula:
[tex]A=\pi\ r^2[/tex]
There are two circles in the diagram. The outer circle has a radius of r1=2x, thus its area is:
[tex]A_1=\pi\ (2x)^2[/tex]
The interior circle has a radius of r2=6 cm, thus its area is:
[tex]A_2=\pi\ 6^2=36\pi[/tex]
The shaded area is obtained by subtracting A1-A2:
[tex]A=\pi\ (2x)^2-36\pi[/tex]
The value of the shaded area is given as 220π cm2. Equating:
[tex]\pi\ (2x)^2-36\pi=220\pi[/tex]
Dividing by π:
[tex](2x)^2-36=220[/tex]
Adding 36:
[tex](2x)^2=220+36=256[/tex]
Taking square root:
[tex]2x=\sqrt{256}=16[/tex]
Dividing by 2:
x = 8 cm
Answer: 8 (second choice)
Nothing, nothing at all.
Answer:
what?
Step-by-step explanation:
10. The sum of two numbers is 102. One number is three less than twice the other.
What are the two numbers?
Answer:
(2n -3) + n = 102
2n - 3 + n = 102
3n - 3 = 102
3n = 105
n = 35 (the first number)
SO...
The other number is (2 x 35) - 3 =
70 - 3 = 67 (the second number)
The numbers are 35 and 67.
35 + 67 = 102 CHECK!