Answer:L-7=Chrissy's age
Step-by-step explanation:
Her brother is L years old so 7 minus L years equals Chrissy's age
WILL MARK BRAINLIEST!!! I don't understand what I did wrong. Can someone point out what I did wrong and tell me how I should have done it.
slope = (4 - 1)/(3 + 6) = 3/9 = 1/3
y = mx + b
b = y - mx
b = 1 - 1/3(-6)
b = 1 + 2
b = 3
equation
y = 1/3x + 3
answer
C: y= 1/3x + 3
Help please thank you and also show the work please
Answer:
y= -1.4x-6.6
Step-by-step explanation:
(1,-8)
7x+5y=-7
Make the equation into standard form
Subtract 7x from both sides
5y=-7x-7
Divide all by 5
y=-1.4x-1.4
Since they are parrallel, we know the slope is -1.4x
y=-1.4x+b
(1,-8) is one of the points it goes through
Replace the x and y in the equation for the x and y in the incomplete equation
-8=-1.4+b
Add 1.4 to both sides
-6.6=b
Thus the equation is
y=-1.4x-6.6
please help!! i don’t understand.
Answer:
64 degrees
Step-by-step explanation:
it's a right angle which means it's 90 degrees then you minus 90 degrees by 26 and you get 64 degrees
Plz answer asap I need an answer i will mark brainiest.
Answer:
A
Step-by-step explanation:
Which statement correctly describes the decimal form of: 2/9
Answer:
0.222 (repeated)
Step-by-step explanation:
Fractions are essentially another way to write a division expression.
This means that if a/b, then it can also be written as a÷b. (a and b are variables)
So, 2/9 is the same thing as 2÷9.
You can then calculate 2÷9 using a calculator, long division, or any other way you usually solve questions involving division.
The sum of two numbers is -64. Their difference is -10. Find the numbers.
The smaller number is:
The larger number is:
Answer:
smaller: -37, larger: -27
Step-by-step explanation:
say one number is x the other one is y
x+y = -64
x-y = -10
subtract the two equations to get
2y = -54
y = -27
x = -37
-27 is larger, -37 is smaller
Find the values of X and Y
Craig likes to collect vinyl records. Last year he had 10 records in his collection. Now he has 12 records. What is the percent increase of his collection?
Answer:
2%
Step-by-step explanation:
2% of 10 is 2. 10 + 2= 12 therefore it is a 2% increase
A professor of statistics wants to test that the average amount of money a typical college student spends per day during spring break is over $70. Based upon previous research, the population standard deviation is estimated to be $17.32. The professor surveys 35 students and finds that the mean spending is $72.43. Which of the following statements is most accurate? Select one: a. reject the null hypothesis at ? = 0.01 b. reject the null hypothesis at ? = 0.10 c. fail to reject the null hypothesis at ? ? 0.10 d. reject the null hypothesis at ? = 0.05
Answer:
Option c: Fail to reject the null hypothesis at α = 0.10
Step-by-step explanation:
We are given;
Population mean; μ = 70
population standard deviation; σ = 17.32
Sample mean; x¯ = 72.43
Sample size; n = 35
Thus;
Null hypothesis; H0: μ = 70
Alternative hypothesis; Ha: μ > 70
Z-score formula is;
z = (x¯ - μ)/(σ/√n)
z = (72.43 - 70)/(17.32/√35)
z = 2.43/2.9276
z = 0.83
From online p-value from z-score calculator attached, using z = 0.83; significance level = 0.05 and one tailed hypothesis, we have;
P-value ≈ 0.2033
It's more than the significance value, so we will fail to reject the null hypothesis at α = 0.05
Similarly, From online p-value from z-score calculator attached, using z = 0.83; significance level = 0.01 and one tailed hypothesis, we have;
P-value ≈ 0.2033
It's more than the significance value, so we will fail to reject the null hypothesis at α = 0.01
Similarly, From online p-value from z-score calculator attached, using z = 0.83; significance level = 0.10 and one tailed hypothesis, we have;
P-value ≈ 0.2033
It's more than the significance value, so we will fail to reject the null hypothesis at α = 0.10
From the 3 significance values, the correct option is option c. fail to reject the null hypothesis at α = 0.10
Using the z-distribution, it is found that the most accurate statement is:
c. fail to reject the null hypothesis at [tex]\alpha = 0.1[/tex]At the null hypothesis, it is tested if the average spending is not over $70, that is:
[tex]H_0: \mu \leq 70[/tex]
At the alternative hypothesis, it is tested if it is over $70, that is:
[tex]H_1: \mu > 70[/tex].
We have the standard deviation for the population, hence, the z-distribution is used to solve this question.
The test statistic is given by:
[tex]z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
The parameters are:
[tex]\overline{x}[/tex] is the sample mean. [tex]\mu[/tex] is the value tested at the null hypothesis. [tex]\sigma[/tex] is the standard deviation of the sample. n is the sample size.In this problem, the values of the parameters are as follows: [tex]\overline{x} = 72.43, \mu = 70, \sigma = 17.32, n = 35[/tex].
Hence, the value of the test statistic is:
[tex]z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
[tex]z = \frac{72.43 - 70}{\frac{17.32}{\sqrt{35}}}[/tex]
[tex]z = 0.83[/tex]
Using a significance level of [tex]\alpha = 0.1[/tex], the critical value for the right-tailed test, as we are testing if the mean is greater than a value, is [tex]z^{\ast} = 1.28[/tex].
The lower the significance level, the higher the critical value.Since for a significance level of 0.1, [tex]z < z^{\ast}[/tex], we fail to reject the null hypothesis at [tex]\alpha = 0.1[/tex], and option c is correct.
You can learn more about the use of the z-distribution to test an hypothesis at https://brainly.com/question/16313918
what is six times the quantity two x plus three y
question:[tex]6^{2}[/tex]x +3y
Answer:
36x + 3y
What is the slope of the line?
63 +10y = 8
There are 8 fewer than double the
number of students in the chorus than in
the band. There are 54 members in the
chorus. Which equation represents how
to find the number of students in the
band?
A. 2x - 8= 54
B. 2x + 8 = 54
C. 8x - 2 = 54
D. 8x + 2 = 54
Answer:
The equation to find the number of students in the
the band will be: 2x - 8= 54
Step-by-step explanation:
Let the number of members in the chorus = x
so the double number of members in the chorus will be = 2x
As Total members in the chorus = 54
As there are 8 fewer than double the number of students in the chorus than in the band. i.e. 2x - 8
Therefore, the equation to find the number of students in the
the band will be: 2x - 8= 54
Write an expression: Jim earned “j” in tips, and Steve earned “s” in tips. They combined their tips and then split them equally.
Answer:
(j + s) /2
Step-by-step explanation:
1. If a Grey Whale has a MASS of 34,000 kg and a Swimming SPEED
(VELOCITY) of 8.25 m/s, what is the Whale's MOMENTUM?
2. A Cheetah can run at top speed for about 8 seconds and run about 225 meters
during this time. Calculate their SPEED (VELOCITY):
Answer:
[tex] \: \: \: \: 1. \\ - - - - - - - - - \\ momemtum \: = mass \times velocity \\ = 34000 \times 8.25 \\ = 280500 \\ \\ 2. \\ - - - - - - - - - - \\ velocity \: = \frac{distance}{time} \\ = \frac{225}{8} \\ = 28.125 \: m {s}^{-1} [/tex]plsss mar it as a brilliant answerand like it ❤The expression is given in srandard form. Rewrite it in factored form . If it cannit be written in factored form , write “cannot be done “ p^2+18p-40
Answer:
(P+20)(p-2)
Step-by-step explanation:
p^2+18p-40
P^2+(20-2)p-40
P^2+20p-2p-40
P(p+20)-2(p+20)
(P+20)(p-2)
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Divide:
5/8 divided by 3/4
Answer:
solution
5/8 ÷3/4
=5÷3=1.6666666667
=4÷8=2
=11
2
what is the quotient in 10÷3
Answer:
its 3.333333333 but short form its just 3.3 as a fraction it would be 3 3/10
Step-by-step explanation:
sry i did this in a comment last time hope it helps
Answer:
The answer us 3.3 Reapeating
Step-by-step explanation:
0.3333
[tex]\sqrt[3]{10}[/tex]
- 9
10
- 9
1
Y varies directly as x, y = 35 when x = 5. Find y when x = 12
The value of y when (x = 12) is 84 and this can be determined by forming the linear equation with the help of the given data.
Given :
y varies directly as xy = 35 when x = 5The following steps can be used to determine the value of y when x = 12:
Step 1 - Given that y varies directly as x, that means:
[tex]\rm y \; \alpha \; x[/tex]
Step 2 - The above expression becomes:
y = kx ----- (1)
Step 3 - Given that y = 35 when x = 5, that implies:
35 = 5k
k = 7
Step 4 - Put the value of k in equation (1).
y = 7x
Step 5 - Now, the value of y when x = 12 is:
y = 7(12)
y = 84
So, the value of y when (x = 12) is 84.
For more information, refer to the link given below:
https://brainly.com/question/2263981
I WILL GIVE BRAINLIEST
The graph of the linear function f(x) has a slope of − 4/3 and a y-intercept of −2. Complete the equation for the function.
An equation for f(x) is f(x) =
Answer:
The graph of the linear function f(x) has a slope of − 4/3 and a y-intercept of −2.
An equation for f(x) is =
[tex]y = mx + b \\ y =- \frac{4}{3} x - 2[/tex]
if - 2x + 4 = 8, will x be positive or negative? Without solving the equation, explain how you know.
X will be negative; in order to determine this for future problems move all like variables to the other side of the equation and see what you are left with. If you are left with -2x= some positive value then it must be a negative x to get a positive answer and vise versa.
Galaxy Comics has a special deal this month. When a customer buys 3 comic books, they
receive 2 action figures with their purchase. Juan bought all 9 comic books from his favorite
series, The Mighty Master.
How many action figures did Juan receive with his purchase?
Answer:
6 action figures
Step-by-step explanation:
I checked it on IXL
Answer:
The answer is 6
Step-by-step explanation:
What is 3568 in standard form
Answer:
3000+500+60+8
Step-by-step explanation:
what 198/28 as a mixed number?
Answer:
7 1/14
Step-by-step explanation:
198÷28 = 7.blablabla
Therefore, 7 is the integer
so you take 7 and multiply it by 28 = 196
198 - 196 = 2
Therefore, 2 is the remainder
The format for mixed numbers is Integer (remainder/denominator)
so the mixed fraction is 7 2/28
2/28 can be reduced to 1/14
Therefore the final answer is 7 1/14
Find the missing side length of each right triangle
Answer:
17 inches
Step-by-step explanation:
c² = a² + b²
c = √(225 + 64) = √289 = 17 inches
Cube root of x^3
Plzzz help
Answer:
x
Step-by-step explanation:
Cube root is basically [tex]\sqrt[3]{x}[/tex] and if you're looking for [tex]\sqrt[3]{x^{3} }[/tex] the 3's cancel out the radical so you get x. There's probably a better explanation online but I'm pretty sure it's x.
1. The cost of fair tickets and admission is shown in
the table below.
Number of
Tickets
Total Cost
(dollars)
5
25
10
45
15
65
Which equation best represents x in relation to y?
Ay - 4x + 5
B. y = 5x + 4
c. y = 5x + 20
D. y = 0.25x + 5
Answer:
Step-by-step explanation:
D
Answer:
D
Step-by-step explanation:
12−3(3x−5)=12(2x+1)
Pls help soon like in minutes :c
Also umm please help me on this
Also umm dErP :>
Answer:
x = 5/11
Step-by-step explanation:
Hope this helps!
Tristan earned a grade of 64% on his multiple choice science final that had a total of 200 problems. How many problems on the final exam did Tristan answer correctly?
Answer:
128
Step-by-step explanation:just go cheat ok thank you
Don't have a clue on how to do this one.
Answer:
From the picture attached,
There are two parallel lines intersected by three transverse lines.
m∠2 = 98°, m∠3 = 23°, m∠8 = 70°
a). Since ∠1 and ∠2 are linear pairs,
=
m∠1 + m∠2 = 180°
m∠1 + 98° = 180°
m∠1 = 180 - 98
m∠1 = 82°
b). m∠4 = m∠7 [Corresponding angles]
m∠7 = 180° - (m∠2 + m∠3) [Property of a triangle]
= 180 - (98 + 23)
= 180 - 121
= 59°
m∠4 = m∠7 = 59°
c). m∠5 = 180° - (m∠3 + m∠4)
= 180° - (23° + 59°)
= 180° - 82°
= 98°
d). m∠6 = 180° - (m∠7 + m∠8)
= 180° - (59° + 70°)
= 180 - 129
= 51°
e). m∠7 = 59° [Calculated in part b]
f). m∠9 = 180° - (m∠4 + m∠8) [Property of a triangle]
= 180° - (59 + 70)°
= 180 - 129
= 51°
g). m∠10 = 180° - m∠9
= 180 - 51
= 129°
Experiment: pick one number from 1 to 10. What is the sample space fo
this experiment?
Answer:
Step-by-step explanation:
Sample space = {1, 2 , 3 , 4 , 5, 6, 7, 8, 9, 10}