Answer:
A.
Step-by-step explanation:
N/A
⇒ m∠A + m∠B + m∠C = 180°
⇒ 25° + 25° + m∠C = 180°
⇒ 50° + m∠C = 180°
⇒ m∠C = 180° – 50°
⇒ m∠C = 130°
Answer:
130
Step-by-step explanation:
The price of a mountain bike is $50 more than a road bike. If 4 road bikes and 3 mountian bikes coat $4700. Find the price of a road bike and a mountain bike.
9514 1404 393
Answer:
road bike: $650mountain bike: $700Step-by-step explanation:
If r is the cost of a road bike, then the cost of a mountain bike is r+50. The total cost of the 7 bicycles is ...
4r +3(r+50) = 4700
7r +150 = 4700 . . . . . . eliminate parentheses
7r = 4550 . . . . . . . . . . . subtract 150
r = 650 . . . . . . . . . . . . . divide by 7; price of a road bike
r+50 = 700 . . . . price of a mountain bike
The price of a road bike is $650; the price of a mountain bike is $700.
9. w +w+w+w:
I’m a little stuck
Answer:
Step-by-step explanation:
pretty simple, i am sure you know the answer, as you add all the variables=
=4w
Which choice shows the coordinates of B’ if the trapezoid is reflected across the x-axis?
A,(-7,2)
B,(2,-7)
C,(7,-2)
C,(-2,7)
Answer:
The answer is C
Step-by-step explanation:
Edgy 2021 Unit Test
A group of friends hiked 7 miles in 2 hours at this same rate what is the total number of miles they can hike in 8 hours
Why can’t I use exponents?
Answer:
try to look it up it shows you videos and everything
Step-by-step explanation:
can i please have a thank you heart and brainliest
Answer:
Try using ^# to show an exponent
Explanation:
People will probably still understand it
Hope it helped!
solve this pls
-7(x + 13) = 28
Answer:
−7(x+13)=28
Step-by-step explanation:
−7(x+13)=28
x=−17
Answer:
x= -17
Step-by-step explanation:
-
Determine if the function is a polynomial function. If the function is a polynomial function, state the degree and the leading coefficient. If the function is not a polynomial, state why. f(x)=(x+1)^1/2(x+2)
It is not a polynomial because there is a fractional exponent.
Question
A football team sold raffle tickets to raise money for the upcoming season. They sold three different types of tickets:
premium for $8, deluxe for $3, and regular for $1. The total number of tickets sold was 155, and the total amount of money
from raffle tickets was $409. If 19 more deluxe tickets were sold than premium tickets, how many premium tickets were
sold?
9514 1404 393
Answer:
24
Step-by-step explanation:
Let p, d, r represent the numbers of premium, deluxe, and regular tickets sold, respectively.
p + d + r = 155 . . . . . . . number of tickets sold
8p +3d +r = 409 . . . . . revenue from tickets sold
d - p = 19 . . . . . . . . . . . relation between deluxe and premium tickets
Using the third equation, we can substitute d=19+p in the other two equations.
p + (19+p) +r = 155
8p +3(19+p) +r = 409
Subtracting the first of these equations from the second, we get ...
(11p +r +57) -(2p +r +19) = (409) -(155)
9p = 216 . . . . . . subtract 38 and simplify
p = 24 . . . . . . . . divide by 9
24 premium tickets were sold.
Complete the ratio table.
Apples
3
12
120
Bananas
4
16
60
Multiply 3x7, Minus 12=
Answer:
Your answer would be 9
Step-by-step explanation:
hope this helps
pls mak brainliest
9n - 8d
(n = 3 and d = 2
Answer:
11
Step-by-step explanation:
9(3)-8(2)
27-16
11
What are the constants in the expression 7r - 3 + 2s + 5
A 7, 3, 2, and 5
B -3 and 5
C 7 and 2
D 7, 2, and 5
Answer:
Option BStep-by-step explanation:
Definition of constants: Contants are numbers that have no variables.
To find the constants of the expression 7r - 3 + 2s + 5, simply look for numbers without variables. We can see that the constants are -3 and 5, which matches Option B.
Hence, Option B is correct.
what is the equation of a line that has a slope of -2 and goes through the point (-9,1)
I need help with this I will mark you if right
Oliver wants to buy a hat that has an original price of $25. The store is having a 20% off sale on everything in the store.
Question: With this sale, what is the final cost of the hat?
Answer:
$20
Step-by-step explanation:
20% of 25 is 5
5 dollars off $25 is $20
What is 2.5 divided by 500,000
Answer:
0.000005
Step-by-step explanation:
ez claps
Answer:
0.000005
Step-by-step explanation:
calculator
A community college has a math placement exam that has a mean of 65 and a standard deviation of 8.2. If a student takes the exam and scores in the lower 2.5%, they are eligible for a free intensive course to help them succeed in their math class. Assume that the exam has a normal distribution. What is the score that cuts off the bottom 2.5%
Answer:
The score that cuts off the bottom 2.5% is 48.93.
Step-by-step explanation:
When the distribution is normal, we use the z-score formula.
In a set with mean [tex]\mu[/tex] and standard deviation [tex]\sigma[/tex], the zscore of a measure X is given by:
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.
In this question, we have that:
[tex]\mu = 65, \sigma = 8.2[/tex]
What is the score that cuts off the bottom 2.5%
This is X when Z has a pvalue of 0.025, so X when Z = -1.96.
[tex]Z = \frac{X - \mu}{\sigma}[/tex]
[tex]-1.96 = \frac{X - 65}{8.2}[/tex]
[tex]X - 65 = -1.96*8.2[/tex]
[tex]X = 48.93[/tex]
The score that cuts off the bottom 2.5% is 48.93.
(2 - (- 2)²)² +5 · ( -4)
Answer:
-164
Step-by-step explanation:
(2 - (- 2)²)² +5 · ( -4)
(2 + 2²) ² +5 · ( -4)
(2 + 2 + 2)² +5 · ( -4)
6² +5 · ( -4)
6 · 6 + 5 · -4
36 + 5 · -4
41 · -4
-164
Hope this helped!
Have a supercalifragilisticexpialidocious day!
Which piecewise relation defines a function?
Answer:
Concept: Functions
A function on an ordinary plane will be continous and discrete. Lets consider the answer choices!C would define a functionIs the answer negative or positive 9-(-6)
Answer:
Positive
Step-by-step explanation:
The two negatives cancel out so it becomes 9 + 6 = 15
Answer:
Positive
Step-by-step explanation:
two negatives when subtracting makes a positive.
9-(-6) = 15
Find the volume of a cube if an edge has length 4rst units
Answer:
64
Step-by-step explanation:
4 * 4 * 4 = 64
The volume of the cube is [tex]64[/tex]
Given that,
The length of an edge is 4rst.We know that
The volume of the cube is
= side^3
= 4^3
= 64
Therefore we can conclude that the volume of the cube is 64.
Learn more about the cube here: brainly.com/question/23096822
6. The current temperature in Chicago, Illinois is -8° F.
The current temperature in Syracuse, New York is -2° F.
(6 points)
a. Which city has the lower temperature? Explain.
b. Write an inequality comparing the two temperatures:
A botanist has developed a new hybrid cotton plant that can withstand insects better than other cotton plants. However, there is some concern about the germination of seeds from the new plant. To estimate the probability that a seed from the new plant will germinate, a random sample of 3000 seeds was planted in warm, moist soil. Of these seeds, 2470 germinated.
a. Use relative frequencies to estimate the probability that a seed will germinate. What is your estimate?
b. Use relative frequencies to estimate the probability that a seed will not germinate. What is your estimate?
c. Either a seed germinates or it does not. What is the sample space in this problem? Do the probabilities assigned to the sample space add up to 1? Should they add up to 1? Explain.
1. Yes, because they cover the entire sample space.
2. Yes, because they do not cover the entire sample space.
3. No, because they cover the entire sample space.
d. No, because they do not cover the entire sample space.
d. Are the outcomes in the sample space of part (c) equally likely?
Answer:
a. The estimate of the probability that a seed will germinate is:
82% (0.82)
b. The estimate of the probability that a seed will not germinate is:
18% (0.18)
c. The sample space is 2.
1. Yes, because they cover the entire sample space. The probabilities assigned to the sample space add up to 1 (0.82 +0.18).
They should always add up to one. Probability summed cannot exceed 1.
Step-by-step explanation:
a) Data and Calculations:
Sample = 3,000 seeds
Germinated seeds = 2,470
Non-germinated seeds = 530 (3,000 - 2,470)
Probability of a seed germinating = 2,470/3,000 = 82% approx.
Therefore, the probability of a seed not germinating = 18% (100 - 82) or (530/3,000)
The sum of a number and 81 is greater than the product of -3 and that number. What are the possible values for the number? (Please help quickly)
Answer: Yeah what the guy above me said.
Step-by-step explanation:
Take25points. please helping me now Please help me Solve this questions in math just look The picture
Answer:15
Step-by-step explanation:
Answer:
graph for #2
Step-by-step explanation:
Liam has to fill a hole in the ground that is 24 inches deep. He fills the hole at a rate of 6 inches in 30 minutes. Write a function that models the depth of the hole in feet over time in hours.
Answer:
The function that models the depth of the hole in feet over time in hours is [tex]h(t) = 24 - 12\cdot t[/tex].
Step-by-step explanation:
According to the statement, the variable to be modelled is the depth of the hole, which decreases whereas is filled. Under the assumption that the hole is filled at constant rate, we obtain the following expression:
[tex]h(t) = h_{o}-\frac{\Delta h}{\Delta t}\cdot t[/tex] (1)
Where:
[tex]h(t)[/tex] - Current depth of the hole, measured in inches.
[tex]h_{o}[/tex] - Initial depth of the hole, measured in inches.
[tex]\Delta h[/tex] - Filled level, measured in inches.
[tex]\Delta t[/tex] - Filling time, measured in hours.
[tex]t[/tex] - Time, measured in hours.
If we know that [tex]h_{o} = 24\,in[/tex], [tex]\Delta h = 6\,in[/tex] and [tex]\Delta t = 0.5\,h[/tex], then the function that models the depth of the hole is:
[tex]h(t) = 24 - 12\cdot t[/tex]
The function that models the depth of the hole in feet over time in hours is [tex]h(t) = 24 - 12\cdot t[/tex].
Naomi can text 90 words in 12 minutes. At this rate, how many minutes would it take her to text 165 words?
please put it step by step
PLEASE HELP THIS IS SCIENTIFIC NOTATION AND MY TEACHER DOESNT TELL US HOW TO DO IT
1.)6.04192125276 x 10 to the 9th power
2.) 3.7837860349 x 10 to the 9th power
Answer:
1) 6041921252.76
2) 3783786034.9
Step-by-step explanation:
You move the decimal point 9 spaces to the right
Find the measure of angle x and y
Answer:
B
Step-by-step explanation:
The total of a kite is 360° so subtract 155 from that to get 205 which divided by 2 is 102.5
