Answer:
Step-by-step explanation:
3x + 6 + 4x + 20 = 180
7x + 26 = 180
7x = 154
x = 22
m<A= 3(22) + 6 = 66 + 6 = 72°
m<B = 4(22) + 20 = 88 + 20 = 108°
You have 12 coins. Some quarters and dimes. You have a total of $2.40, how many of each coin do you have?
Answer:
8 quarters and 4 dimes
Step-by-step explanation:
4 quarters = 1 dollars
4 quarters = 1 dollars
4 dimes = 40 cents
2.40$
============================================
Work Shown:
d = number of dimes
q = number of quarters
1 dime = 10 cents
d dimes = 10d cents
1 quarter = 25 cents
q quarters = 25q cents
d+q = 12 since we have 12 coins total
q = -d+12 after solving for q
10d+25q = total value in cents
10d+25q = 240
10d+25(-d+12) = 240 ... plug in q = -d+12
10d-25d+300 = 240
-15d+300 = 240
-15d = 240-300
-15d = -60
d = -60/(-15)
d = 4
q = -d+12
q = -4+12
q = 8
Since d = 4 and q = 8, this means we have 4 dimes and 8 quarters
-----------------------------
Check:
4 dimes = 4*10 = 40 cents
8 quarters = 8*25 = 200 cents
(4 dimes) + (8 quarters) = (40 cents) + (200 cents) = 240 cents
240 cents = 240/100 = $2.40
We have 4+8 = 12 coins total
The answers are confirmed
Regina currently makes $15 an hour. Her boss decided to give her a 7% raise. Write the expression she would use to determine how much more she will make per hour.
Answer:
[tex]\frac{7\times15}{100}[/tex]
Step-by-step explanation:
Given the following question:
7% of 15
To find the answer we need to use the formula to calculate percentages in which we multiply the percentage by the whole number and then divide that answer by 100, of course rounding to the nearest cent if needed.
[tex]\frac{p\times n}{100}[/tex]
[tex]\frac{7\times15}{100}[/tex]
[tex]7\times15=105[/tex]
[tex]105\div=1.05[/tex]
[tex]=1.05[/tex]
7% of 15 is "1.05" which means Regina receives a $1.05 raise.
Hope this helps.
In the picture at right, lines l and m are parallel. The measure of angle
Answer:
Angle APB is 95∘
Step-by-step explanation:
180 - 54 = 126
126 - 31 = 95
Answer:
145 Degree
Step-by-step explanation:
it is a reflex angle and all reflex angle measures at 145 Degrees
What the answer to number 3 is
Answer:
is proof an option?
Step-by-step explanation:
PLEASE HELP
Which term represents the stage when the cytoplasm of a cell divides?
Cytokinesis
Interphase
Mitosis
Prophase
Answer: Cytokinesis
Step-by-step explanation:
Hope this helped :)
Answer:
Try Cytokinesis
Step-by-step explanation:
This might help!
How do you graph the function y=1/5x+4
You substitute x or y values and then plot the solution point that you find. You should plot at least three solution points. For example, here is a solution table that can be used to graph this function.
x | y
___
5 | 5
10 | 6
15 | 7
How do signs of factors affect their product?
Answer:
If a negative number is multiplied with a positive number, the result will be negative. If two positive numbers are multiplied, the result will be positive. If two negative numbers are multiplied, the result will also be positive.
Step-by-step explanation:
Joy decided to ride her bike to visit her friend, Three miles from home her bike got a flat tire and she had to walk the remaining two miles to Justin's home. She could not repair the tire and had to walk all the way home. How many miles did Joy walk than she rode? They got the answer 4 but I am not sure how?
Answer:
4
Step-by-step explanation:
okay, so she rode 3 miles. Keep that aside
Then she had 2 walk the remaining 2 miles
She had to walk all the way home. So say for example instead of riding she walked 3 miles, then she walked that additional 2 miles. So, 5 miles. Then add the two miles she had to walk to his house. so, she walked 7 miles and rode 3 miles. 7-3= 4 miles. I attached a picture that should hopefully explain it better.
Hope this helps!
What is the y-intercept of the function f(x) = -2/9x + 1/3
Answer:
1/3
Step-by-step explanation:
It’s in the form y=mx+b
b is the y intercept
help pls? show work!!
Answer:
x = 19; y = 19√3
Step-by-step explanation:
sin 30° = opp/hyp
sin 30° = x/38
x = 38 × sin 30°
x = 19
cos 30° = adj/hyp
cos 30° = y/38
y = 38 × cos 30°
y = 38 × √3/2
y = 19√3
In which number is the digit 8 ten times larger than it is in the number 18?
Answer:
387 contains 80 and 8 x 10 = 80
Twice the sum of a number and 7
Answer:
2 · (n + 7)Step-by-step explanation:
The sum of a number n and 7 → n + 7
Twice the sum of a number n and 7 → 2 · (n + 7)
Factor the trinomial.
x² - 2- 8
I need help please
Answer:
C
Step-by-step explanation:
A. 3:7 is not equal to 5:14 because both of these options are in their lowest value and are not equal.
B. 8:6 is not equal to 6:8 because 8 is not equal to 6 and 6 is not equal to 8.
C. 1:4 is equal to 5:20 because 1:4 can be multiplied by 5 to be 5:20 and 5:20 is equal to 5:20.
D. 5:3 is not equal to 12:5 because 5 is not equal to 12 and 3 is not equal to 15.
Hope this Helps! :)
Have any questions? Ask below in the comments and I will try my best to answer.
-SGO
A bag contains five Snickers bars, nine Milky Way bars, two Crunch bars,
and twelve Twix bars. If Jack randomly selects a candy bar, eats it, then
randomly selects another, find the probability that both candy bars were
Milky Way.
Answer:
about a 9.5 percent chance of both being a milky way
Step-by-step explanation:
Probability that both candy bars were milky way is [tex]\frac{2}{21}[/tex]
What is Probability?Probability is the branch of mathematics concerning numerical descriptions of how likely an event is to occur
Given,
Number of snickers bars = 5
Number of Milky way bars =9
Number of crunch bars = 2
Number of Twix bars = 12
Total number of Candy bars = 5+9+2+12 =28
If Jack randomly selects a candy bar, eats it, then randomly selects another
Probability = Number of favorable outcome / Number of total outcome
Probability of taking Milky way bar in first pick = [tex]\frac{9}{28}[/tex]
So Total number of candy bars and number of Milky way bar are decreased by 1.
Probability of taking Milky way bar in second pick = [tex]\frac{8}{27}[/tex]
Probability that both candy bars were milky way = [tex](\frac{9}{28}).(\frac{8}{27})=\frac{2}{21}[/tex]
Hence, Probability that both candy bars were milky way is [tex]\frac{2}{21}[/tex]
Learn more about Probability here
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Last year, 15 dogs entered the local dog show. This year, 20 entered. What is the percent increase?
Answer: 0.75?
Step-by-step explanation:
This might be wrong but, you cross multiply and then divid by one hundred.
5 x. 100x 75 / 100
100. 15
Answer:
the answer is 33 1/3%
Step-by-step explanation:
I took the test
mrs. hughes has 1/4 of a pan of spaghetti left over. She brought it to school and the 6 fifth grade teachers shred it what fraction of the pan of spaghetti did each teacher get?
About 20% of earths fresh water is stored in cracks and pores as _______.
Answer:
groundwater
Step-by-step explanation:
can you multiply whole number by a number with a variable?
Answer: Definitely Yes.
Step-by-step explanation:
Answer: YES, YOU CAN
Step-by-step explanation:
If the perimeter in the rectangle.is 18 inches, find the length of the sideshow
Answer:
5 inches and 4 inches
Step-by-step explanation:
The perimeter is equal to 2(2x + 1) + 2(x + 2) since there are two sides of the rectangle equal to the expressions given.
Since we also know that the perimeter is 18 inches, we can set that equal to 18.
2(2x + 1) + 2(x + 2) = 18
4x + 2 + 2x + 4 = 18
6x + 6 = 18
6x = 12
x = 2
After plugging 2 back into 2x + 1 and x + 2, you get 5 and 4. Hope this helped!
A net has a square at the center and 4 triangles on the sides. The square has side lengths of 2 yards. The triangles have a base of 2 yards and height of 3 yards.
What is the surface area of the square pyramid?
The surface area is
yd2.
Answer:
16 yd²
Step-by-step explanation:
The total surface area is the sum of the area of the square base and the 4 triangular sides.
SA = s² + 4 × bh/2
SA = (2 yd)² + 4 × (2 yd)(3 yd)/2
SA = 4 yd² + 12 yd²
SA = 16 yd²
Answer:
16
Step-by-step explanation:
Select Not independent or Independent for each situation.
- A jar contains green marbles and orange marbles. A green marble is selected followed by an orange marble, at random, without replacement.
- A coin is flipped three times.
- A bag contains nickels and dimes. A nickel is selected followed by a dime, at random, with replacement.
- A number cube is rolled twice.
"Not independent" means that the situation is dependent. It is not relying on something else, or something else will not change the outcome. Independent means the situation is isolated, it is independent.
A jar contains green marbles and orange marbles. A green marble is selected followed by an orange marble, at random, without replacement.
Not independent
-> Since the marbles are not being replaced, this isn't independent
A coin is flipped three times.
Independent
A bag contains nickels and dimes. A nickel is selected followed by a dime, at random, with replacement.
Independent
-> Because there is replacement, this is independent
A number cube is rolled twice.
Independent
Need help with this only 25 minutes
-31.25 + 19.70
explanation:
change in account = withdraw amount + amount deposited
change in account:
-31.25 + 19.70
note: withdrawal will be negative and deposited positive
A rectangular prism has a length of 412 centimeters, a width of 412 centimeters, and a height of 6 centimeters. Sally has a storage container for the prism that has a volume of 143 cubic centimeters.
What is the difference between the volume of the prism and the volume of the storage container?
Enter your answer in the box as a simplified mixed number or a decimal.
cm³
Answer: First find the volume of the rectangle prism. Do this by multiplying all three dimensions. 412 x 412 x 6 = 1,018,464.
Subtract 1,018,464 from 143.
You should get 1,018,321 mm^3
(Remember that the units are cubed because you multipled 412 mm x 412 mm x 6 mm which is multiplying not only the numbers, but the mm three times as well.)
Step-by-step explanation: hope it's helpful and thank you for letting me answer
A triangle has an area of 66 in2. If the base is 11 inches, what is the height?
[tex] \Large{\boxed{\sf Height = 12 \ in}} [/tex]
[tex] \\ [/tex]
Explanation:The area of a triangle is given by the following formula:
[tex] \\ [/tex]
[tex] \left[ \begin{array}{c c c} \underline{\tt Area \ of \ a \ triangle \text{:}} \\ ~ \\ \tt A = \dfrac{B \cdot H}{2} \end{array} \right] [/tex]
Where:
A is the area of the triangle.B is the base.H is the height.[tex] \\ [/tex]
[tex] \Large{\boxed{\sf Given \text{:} } \ \begin{cases} \sf A &=\sf 66 \ in^2 \\ \sf B &=\sf 11 \ in \end{cases} } [/tex]
[tex] \\ [/tex]
Substitute these values into the formula and solve for H.
[tex] \sf A = \dfrac{B \cdot H}{2} \\ \\ \\ \longrightarrow \sf 66 \ in^2 = \dfrac{11 \ in \cdot H}{2} [/tex]
[tex] \\ [/tex]
Multiply both sides by 2:
[tex] \longrightarrow \sf 66 \ in^2 \cdot 2 = \dfrac{11 \ in \cdot H}{2} \cdot 2 \\ \\ \\ \longrightarrow \sf 132 \ in^2 = 11 \ in \cdot H [/tex]
[tex] \\ [/tex]
Divide both sides by 11in :
[tex] \longrightarrow \sf \dfrac{132 \ in^2 }{11 \ in } = H \\ \\ \\ \longrightarrow \boxed{\boxed{\sf H = 12 \ in}} [/tex]
[tex] \\ [/tex]
[tex] \hrulfill [/tex]
[tex] \\ [/tex]
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A triangle has an area of 66 in². If the base is 11 inches, what is the height?
Answer:The height of the triangle is 12 inches.
Step-by-step explanation:As per the provided information in the given problem, we know that the area of a triangle is given by 66 inches². The base of the triangle is given by 11 inches. In this problem, we are tasked to find the height of the triangle.
To do this, we will use the formula below:
[tex]\Large\begin{aligned}\rm\qquad\dashrightarrow{Area_{(Triangle)} = \dfrac{1}{2}bh}\end{aligned}[/tex]
Where:
The base is denoted as b.The height is denoted as h.Substitute the given values into the formula given earlier and solve for h:
[tex]\Large\begin{aligned}\rm\dashrightarrow{Area_{(Triangle)}}& = \rm{\dfrac{1}{2}bh}\\\rm\dashrightarrow{66\: in^2}& = \rm{0.5(11\: in)(h)} \\\rm\dashrightarrow{66\: in^2}& = \rm{(5.5\: in)(h)} \\\rm\dashrightarrow{\dfrac{66\: in^{\cancel{2}}}{5.5\: \cancel{in}}}& = \rm{\dfrac{(\cancel{5.5\: in})(h)}{\cancel{5.5\: in}}} \\\rm\dashrightarrow{12\: in}& = \rm{h}\end{aligned}[/tex]
Hence, the height of the triangle is 12 inches.
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pls answer this correctly I need it now!
Answer:
1. C
2. B
3. D
4. A
Step-by-step explanation:
1. As mentioned in the last sentence of the passage, the main goal of the problem is to figure out how long it took John to get ready.
2/3/4. The goal is to find the amount of time John took to get ready and to obtain that time you need to use 6:10-5:30=n. After solving the number sentence, you should get 40 minutes.
Which number line represents the solution set for the inequality 3x < -9?
Answer:
i think 5 might be the correct answer
Step-by-step explanation:
Answer:
the third option or c
Step-by-step explanation:
hope this helps!
A block measures 8 cm x 5 cm x 4 cm. On which face will it exert the least pressure? Explain how you know.
Answer 4 cm because least
Step-by-step explanation:
because it is the leats so that is ir.
WILL GET MARKED BRAINLIEST FOR BEST ANSWER
Come up with an example of a game other than chess that uses the concept coordinate plane. Explain how the game uses a coordinate plane.
Answer:
Draughts
Step-by-step explanation:
It still counts
Solve for r in terms of q, s, and t
T=r-q+s
R=
Answer:
r = t + q - s
Step-by-step explanation:
t = r - q + s
goal is to isolate the variable
add q to both sides (this cancels the q out on the right side)
t + q = r - q + q + s
t + q = r + s
subtract s from both sides
t + q - s = r + s - s
t + q - s = r
In other words:
r = t + q - s