Answer:
C. -7.78
Step-by-step explanation:
If the denominators are not the same, then you have to use equivalent fractions which do have a common denominator . To do this, you need to find the least common multiple (LCM) of the two denominators. To add fractions with unlike denominators, rename the fractions with a common denominator. Then add and simplify.
Step 1: Keep the denominator the same. Step 2: Add or subtract the numerators. ...
Step 1: Find the Lowest Common Multiple (LCM) between the denominators. ...
Step 1: Convert all mixed numbers into improper fractions. ...
In this second method, we will break the mixed number into wholes and parts. ...
Thus, is equivalent to.
Fractions
Fractions can be thought of as another way of seeing division. If you have one whole pizza and two people want to share it equally, they will divide it into two halves:
The bottom number of a fraction is the denominator. It tells how many parts a whole has been divided into. In this case our pizza is divided into two parts.
Proper Fractions, Improper Fractions, and Mixed Numbers
A proper fraction is one in which the numerator is smaller than the denominator.
An improper fraction is one in which the numerator is larger than the denominator. If the numerator is larger than the denominator, the fraction equals a number that is greater than one.
Lowest Terms
Want to learn more? Take an online course in Basic Math.
Finding the GCF (Greatest Common Factor)
The greatest common factor is the largest factor that divides two numbers. We find this by figuring out what prime numbers are multiplied together to make up each number. A prime number is a number that can only be divided by itself or by one. Examples of prime numbers are 1, 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, etc. We want to focus on those that are less than ten in most cases.
Finding the LCD (Lowest Common Denominator)
Adding and Subtracting Fractions
To add or subtract two fractions, the two fractions must have the same denominator. Therefore, you will have to find the lowest common denominator and change each fraction to an equivalent fraction. Then you add or subtract the numerators as indicated and put the resultant number over the denominator and reduce the fraction to lowest terms.
Answer:
B
Step-by-step explanation:
N/A
In Tayshia's pantry, there are bags of Cheetos and Doritos. The ratio of Cheetos to total bags of chips in her pantry is 9 to 16.
Which number could be the number of Doritos in Tayshia's pantry?
45 people per square kilometer. If the region covers 33 square kilometers, what is the population of the region?
Multiply people per square km by total square km.
45 x 33 = 1,485 total people.
hellllllllpppppppppp mmmmee plzzzzzzz
What is the y-intercept of the line 2x+3y = 6?
A.(0,2)
B.(2,0)
C.(0,3)
D.(3,0)
Answer:
Choice A (0,2)
Step-by-step explanation:
Solve for y:
2x + 3y = 6
3y = -2x+6
y=-2/3x+2
Sub x as 0 to find y:
y=-2/3(0)+2
y=2
Answer:
a- (0,2)
Step-by-step explanation:
PLATO
What is the y-intercept?
y=-5x+3
What is the difference between an open and closed circle when graphing inequalities?
Answer Choices
A. Open Circle is for greater than or less than symbols, closed circles are for greater than or equal to or less than or equal to.
B. Both choices are correct
C. Open Circle means that the solution cannot be the answer, closed circle means that the answer can be part of the solution.
Answer:
i think its c
Step-by-step explanation:
Open circle means that the solution cannot be the answer, closed circle means that the answer can be part of the solution. Therefore, option B is the correct answer.
What are inequalities?Inequalities are the mathematical expressions in which both sides are not equal. In inequality, unlike in equations, we compare two values. The equal sign in between is replaced by less than (or less than or equal to), greater than (or greater than or equal to), or not equal to sign.
The difference between an open and closed circle when graphing inequalities are
A closed circle indicates "greater than or equal to" or "less than or equal to," while and open circle indicates "greater than" or "less than".
Therefore, option B is the correct answer.
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How do you multiply and divide rational expressions?
Step-by-step explanation:
Step 1: Factor both the numerator and the denominator.
Step 2: Write as one fraction.
Step 3: Simplify the rational expression.
Step 4: Multiply any remaining factors in the numerator and/or denominator.
Step 1: Factor both the numerator and the denominator.
Step 2: Write as one fraction
A landscaper uses 28 yards of sod over 7
days during the summer. After 6 days,
how many yards of sod will the
landscaper use? Solve using unit rates.
Answer:
4.666 repeat robuxxx vegtebles hulk
Someone help me please
Determine the tangent of < A
Answer:
B
Step-by-step explanation:
The tangent of an angle is the ratio of the opposite side to the adjacent.
With respect to Angle A, the opposite side is 12.
And the adjacent side is 5.
Therefore:
[tex]\displaystyle\tan(A)=\frac{\text{opp}}{\text{adj}}=\frac{12}{5}[/tex]
The answer is B.
Monthly sales of water heaters are normally distributed with a mean of 21 and a standard deviation of 5. What is the probability of selling 12 water heaters or
less?
a) 3.59%
Ob) 1.8096
O c) 96.41%
O d) 8.45%
Answer:
Option A: 3.59% is the correct answer
Step-by-step explanation:
Z-score is used to calculate the probabilities when mean and standard deviation is given.
Given
Mean = μ = 21
SD = σ = 5
We have to find the probability of selling 12 or less water heaters so our x value is 12
x = 12
The z-score of a value is calculated as:
z-score = (x-μ)/σ
Putting the values
[tex]z-score=\frac{12-21}{5} \\=\frac{-9}{5}\\=-1.8[/tex]
Now z-score table will be used to calculate the probability for z= -1.8
So we will go for the row with -1.8 and column 0, which gives us: 0.03593
As we have to calculate the probability in percentage
[tex]=0.03593*100\\= 3.593\%[/tex]
Hence,
Option A: 3.59% is the correct answer
A line passes through the points (-1, 10) and (3, 2). Which shows the graph of this line?
-10-8-8
-2
4
6
8
10
X
-4
-6
-S
10
10
Answer:b
Step-by-step explanation:
Which calculation can be used to find 6% of 50?
Answer:
3
Step-by-step explanation:
We are required to find 6% of 50
To write it mathematically,
50 * 6%
Now, 6% can be rewritten as 6/100 because it tells us: '6 out of 100' and that is what percentage does
= 50 * [tex]\frac{6}{100}[/tex]
= [tex]\frac{300}{100}[/tex]
= 3
Hence, 6% of 50 is 3
Cody's Aunt pays him $30 to walk her dogs 6 times at this rate how many times must he walk the dog in order to earn $100
Answer:
20 times
Step-by-step explanation:
30/6 = $5 per time
100/5 = 20 times
In ∆ABC below, AD, BE, and CF are medians that intersect at G. If CG=8x and CF=9x+6, what is the value of x?
Answer:
Step-by-step explanation:
CG = [tex]\frac{2}{3}[/tex] CF
8x = [tex]\frac{2}{3}[/tex] (9x + 6)
8x = 6x + 4
2x = 4
x = 2
Please help
Multiple choice
Will appreciate it if u help!
Answer:
Linear
Step-by-step explanation:
It's constant. Each X is going up 1 while each Y is going up 80
Question 1/3 There are 85 girls and 70 boys in the sixth grade. Of these students, 14 girls and 8 boys take piano lessons.
What percentage of the sixth graders at this school take piano lessons?
A. 14%
B. 22%
C. 18%
D. 12%
Answer:
A
Step-by-step explanation:
155-22/155 equal around 86% who don't so meaning 14% do take lessons.
Answer:
The answer is A.
Step-by-step explanation:
Find the perimeter of quadrilateral ABCD with vertices A(-2,-2), B(-1,3),
C(5, 3), and D(4, -2).
Answer:
22.2Step-by-step explanation:
Step one
given the coordinates
ABCD with vertices A(-2,-2), B(-1,3), C(5, 3), and D(4, -2)
AB=(-2,-2),(-1,3)
BC=(-1,3), (5, 3)
CD=(5, 3),(4, -2)
DA=(4, -2),(-2,-2)
The distance between points AB=
[tex]AB= \sqrt (x_2-x_1)^2+(y_2-y_1)^2[/tex]
[tex]AB= \sqrt (-1+2)^2+(3+2)^2\\\\AB= \sqrt 1^2+(5)^2\\\\AB= \sqrt26\\\\AB=5.1[/tex]
The distance between points BC=
[tex]BC= \sqrt (5+1)^2+(3-3)^2\\\\BC= \sqrt 6^2+(0)^2\\\\BC= \sqrt36\\\\BC=6[/tex]
The distance between points CD
[tex]CD= \sqrt (4-5)^2+(-2-3)^2\\\\CD= \sqrt -1^2+(-5)^2\\\\CD= \sqrt26\\\\CD=5.1[/tex]
The distance between points DA
[tex]DA= \sqrt (4+2)^2+(-2+2)^2\\\\DA= \sqrt 6^2+(0)^2\\\\DA= \sqrt36\\\\DA=6[/tex]
Hence the perimeter = 5.1+6+5.1+6
= 22.2
PLEASE HELP I NEED TO SHOW WORK WILL GIVE BRAINLIST
Answer:
Jahmya's Lunch cost more
Step-by-step explanation:
Stephen's Lunch
(Garden Salad) 2.29(Veggie Burger) 4.75(Lemonade) 1.292.29 + 1.29 = 3.583.58 + 4.75 = 8.33Total Cost = $8.33Jahmya's Lunch
(Fruit Salad) 2.89(Sandwich) 4.59(Water) 1.392.89 + 4.59 = 7.487.48 + 1.39 = 8.87Total Cost = $8.87I need help on this cause I got the last one wrong..
Answer:
"All integers are irrational numbers" False
"No whole numbers are irrational numbers" True
"Some rational numbers are not integers" True
"Some integers are not whole numbers" True
Step-by-step explanation:
I'm 100% sure of this.
Please I need help and I’m stumped here.
Answer:
Step-by-step explanation:
1) For complex numbers addition, add the real parts and imaginary party separately.
(2 +5i) - (-6 + 3i) = 2 + 5i + 6 - 3i
= 2+ 6 + 5i - 3i
= 8 + 2i
2)Use FOIL method
(-4 +2i)(3 - 7i) = -4*3 + (-4)*(-7i) + 2i* 3 + (2i)*(-7i)
= -12 + 28i + 6i -14i² {i² = -1}
= -12 + 28i + 6i - 14*(-1)
= -12 + 28i + 6i + 14 {Combine like terms}
= -12 + 14 + 28i + 6i
= - 2 + 34i
3)Hint:
[tex]a^{mn} = (a^m)^{n}\\\\a^{m}*a^{n}= a^{m+n}[/tex]
[tex]\sqrt[4]{144x^{12}y^{7}} =\sqrt[4]{2*2*2*2*3*3*x^{3*4}*y^{4+3}} \\\\=\sqrt[4]{2^{4}*9*(x^{3})^{4}*y^{4}*y^{3}}\\\\=2*x^{3}*y\sqrt[4]{9y^{3}}\\\\ =2x^{3}y\sqrt[4]{9y^{3}}[/tex]
4)
[tex]\sqrt[3]{\frac{320a^{10}}{27b^{6}}}= \sqrt[3]{\frac{8*8*5a^{3+3+3+1}}{3*3*3b^{3+3}}}\\\\=\sqrt[3]{\frac{2^{3}*2^{3}*5a^{3}*a^{3}*a^{3}*a}{3^{3}b^{3}*b^{3}}}\\\\=\frac{2*2*a*a*a}{3b*b}\sqrt[3]{\frac{5a}{1}}\\\\=\frac{4a^{2}}{3b^{2}}\sqrt[3]{5a}[/tex]
5) 4x² + 28x + 49 = 4x² + 14x +14x + 7*7
= 2x(2x + 7) + 7(2x + 7)
=(2x+ 7)(2x + 7)
6) 2x² + 3x - 20 = 2x² +8x - 5x - 5 *4
=2x(x + 4) - 5(x + 4)
= (x + 4)(2x - 5)
please tell fast plzzzzzzz
Answer:
im too dum
Step-by-step explanation:
dum dum dummy
Which triangle pairs are not necessarily congruent? Select all that apply:
Answer:
The answer is A because the one on the side is smaller then one one on the side
Step-by-step explanation:
The second option triangle pairs are not necessarily congruent.
What are congruent triangle?Congruent triangles have the same corresponding angle measures and side lengths.
Given are five triangles,
In the second pair of the triangles, only angles are equal, which makes them similar not congruent.
Hence, The second option triangle pairs are not necessarily congruent.
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A bowl contains an apple, a plum, a pear, and a banana. How many different pairs of fruit can be selected from the bowl
Based on the information given about the combination, the number of different parts of fruits that can be selected from the bowl will be 6.
Solving the combination.Since the bowl contains an apple, a plum, a pear, and a banana, the different pairs of fruit that can be selected from the bowl will be 4C2.
We can solve this further which will be:
= 4C2
= 4! /2! (4 - 2)!
= 4! / 2!2!
= (4 × 3 × 2)/ 2 × 2
= 24/4
= 6
Therefore, 6 different pairs of fruit can be selected.
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Jon is hanging a picture. He wants to center it horizontally on the wall. The picture is 32 1/2 inches long, and the wall is 120 3/4 inches long. How far from each edge of the wall should he place the picture? Please answer quickly.
Answer:
44.125 inches
Step-by-step explanation:
Given that:
Length of picture = 32 1/2 inches
Length of wall = 120 3/4 inches
Hence, to center picture horizontally ;
Distance from the edge of the wall in which the picture should be placed :
(Length of wall - length of picture) / 2
(120 3/4 - 32 1/2) / 2
(483/4 - 65/2) / 2
Take the L. C. M of 4 and 2 = 4
((483 - 130) / 4) ÷ 2
(353 / 4) ÷ 2
(353 / 4) * (1 / 2)
= 353 / 8
= 44 1/8
= 44 1/8
= 44.125 inches
The space that will be left in each side of the picture from the edge of the wall if Jon is to hang the picture at the center of the wall horizontally is: 44.125 inches.
The wall that Jon wants to hang the picture has been sketched in the diagram attached below (see attachment).
Given the following:
Length of the wall = 120 3/4 inches = 120.75 inchesLength of the picture = 32 1/2 inches = 32.5 inchesThe space in each edge of the wall = xTotal length of space to be left = x + x = 2xTherefore, the following equation can be derived as follows:
[tex]2x + 32.5 = 120.75[/tex]
Solve for x[tex]2x = 120.75 - 32.5 \\\\2x = 88.25\\\\x = \frac{88.25}{2} \\\\\mathbf{x = 44.125 $ inches}[/tex]
Therefore, the space that will be left in each side of the picture from the edge of the wall if Jon is to hang the picture at the center of the wall horizontally is: 44.125 inches.
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what is the range of the relation graphed below?
Answer:
D. -2 ≤ y ≤ 2
Step-by-step explanation:
Range of a Relation
It's the set of values the relation takes when x moves into the relation's domain.
It can be graphically determined by placing imaginary horizontal lines from minus infinite to plus infinite. Where the line meets the relation's graph, that value of y belongs to the range.
If we place imaginary horizontal lines from -∞ up to y=-2, we won't meet the relation's graph. Exactly at y = -2, the line and the graph have one point in common.
Moving up the line will meet the graph until exactly y=2, from where there won't be any additional interceptions.
Thus, the range of the relation is [-2,2] or, written in inequality form:
D. -2 ≤ y ≤ 2
write the percent as fraction: 8⅓%
Answer:
2700%
Step-by-step explanation:
8 1/3% expressed as a fraction is:
25/3
The given number is in mixed fraction 8 1/3 .
To write it in fraction follow the steps,
Step 1 - Multiply 8 by 3,
8x3=24
Step 2 - Add 24 and 1,
24+1=25
The required fraction became 8 1/3 = 25/3 .
Hopes this helps :)
Which of the following points would be on the graph of the equation y= -4x+6
A- (-4,-10)
B-(-4,22)
C-(1,-10)
D-(1,-2)
Answer:
B: (-4, 22)
Step-by-step explanation:
for these types of problems, you just need to plug in the values
A: y= -4(-4) + 6 = 22 — NOT 10
B: y= -4(-4) + 6 = 22 — CORRECT
C: y= -4(1) + 6 = 2 — NOT 10
D: y= -4(1) + 6 = 2 — NOT -2
Answer:
Step-by-step explanation:
It takes a puppy 2 days to eat 3/4 cup of food. At that rate, in how many days will it take the puppy consume 3 cups of food?
Answer:
4 days
Step-by-step explanation
[tex]\frac{4}{1}[/tex] x [tex]\frac{4}{3}[/tex] = 5 [tex]\frac{1}{3}[/tex]
A gallon of water weighs 8.354 pounds. Simon used 11.81 gallons of water while showering. About how much pounds of water did Simon use?
Answer:
98.6607 pounds
Step-by-step explanation:
11.81 times 8.354 = 98.6607
PLS PLS PLS HELP ME! I WILL GIVE BRAINILIEST!
Answer:
I'm going to answer in the comments so no one steals this answer
Step-by-step explanation: