Answer:
use math(way)
Step-by-step explanation:
Write this sentence as an equation?
Six less than 4 times a number gives 18
Answer:
6-4 times x=18
btw x=9
Answer:
4x - 6 =15
Step-by-step explanation:
I will use "x" as our variable to represent the number we are trying to find.
Let's take the problem piece by piece.
Six less than four times a number.
If we are using x to represent our number, we know that when we do four times that number we are multiplying x times 4, which is the same as writing "4x."
Next we know that we are taking six less than 4x. Six less than means we will be subtracting 6 from our 4x, which is the same as writing 4x - 6.
Finally, we know that six less than 4x (4x - 6) equals 15. Now we have a full equation:
4x - 6 =15
PLEASE HELP i’ll mark brainliest !!
Answer:
180-62=118
Step-by-step explanation:
ab=ac means that they are all equal now you know that c=62 angle on a straight line adds up to 180 so you subtract 180 to 62
PLEASE PLEASE HELP ME!
Answer:
x = 65.4
Step-by-step explanation:
Formula For Cos: cos (x°) = adjacent/hypotenuse
Adjacent = 5
Hypotenuse = 12
cos (x) = adjacent/hypotenuse
cos (x) = 5/12
x = cos⁻¹ (5/12)
x = = 65.3756816478359
x = 65.4 (rounded)
Tip: cos⁻¹ is inverse of cos.
Therefore, x = 65.4
Hope this helped! <3
Find the slope between the two given points A(3,7), B(9,-5)
Answer:
Slope= -2
Step-by-step explanation:
An SAT prep course claims to improve the test score of students. The table below shows the scores for seven students the first two times they took the verbal SAT. Before taking the SAT for the second time, each student took a course to try to improve his or her verbal SAT scores. Do these results support the claim that the SAT prep course improves the students' verbal SAT scores?
Let d=(verbal SAT scores prior to taking the prep course)−(verbal SAT scores after taking the prep course)d=(verbal SAT scores prior to taking the prep course)−(verbal SAT scores after taking the prep course). Use a significance level of α=0.1 for the test. Assume that the verbal SAT scores are normally distributed for the population of students both before and after taking the SAT prep course.
Student 1 2 3 4 5 6 7
Score on first SAT 500 380 560 430 450 360 560
Score on second SAT 540 470 580 450 480 400 600
Required:
a. State the null and alternative hypotheses for the test.
b. Find the value of the standard deviation of the paired differences. Round your answer to one decimal place.
c. Compute the value of the test statistic. Round your answer to three decimal places.
d. Determine the decision rule for rejecting the null hypothesis. Round the numerical portion of your answer to three decimal places.
e. Make the decision for the hypothesis test.
Answer:
Since the calculated value of t = -0.215 falls in the critical region so we accept Ha that SAT prep course improves the students' verbal SAT scores and reject the null hypothesis at significance level 0.05.
e. These results support the claim that the SAT prep course improves the students' verbal SAT scores.
Step-by-step explanation:
Student 1 2 3 4 5 6 7
Score on first SAT 500 380 560 430 450 360 560
Score on second SAT 540 470 580 450 480 400 600
Difference d -40 -90 -20 -20 -30 -40 -40 ∑ -280
d² 1600 8100 400 400 900 1600 1600 ∑14600
a. Let the hypotheses be
H0: ud= 0 against the claim Ha: ud ≠0
The degrees of freedom = n-1= 7-1= 6
The significance level is 0.05
The test statistic is
t= d`/sd/√n
The critical region is ║t║≤ t (0.025,6) = ±2.447
d`= ∑di/n= -280/7= -4
Sd²= ∑(di-d`)²/n-1 = 1/n-1 [∑di²- (∑di)²n]
= 1/6[14600-(-4)²/7] = [14600-2.2857/6]= 2432.952
b. Sd= 49.3249= 49.325
Therefore
c. t= d`/ sd/√n
t= -4/ 49.325/√7
t= -4/18.6435 = -0.2145= -0.215
d. Since the calculated value of t = -0.215 falls in the critical region so we accept Ha that SAT prep course improves the students' verbal SAT scores and reject the null hypothesis at significance level 0.05
e. These results support the claim that the SAT prep course improves the students' verbal SAT scores.
Ugh this app is making the photo look nasty but can u please answer this
Answer:
im pretty sure its C
Step-by-step explanation:
What is an equivalent fraction of 10/12
Answer:
5/6
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightStep-by-step explanation:
We can simplify this fraction down further by divide both numerator and denominator by 2:
10/2 = 5
12/2 = 6
5/6 will be equivalent to 10/12
Answer:
[tex] \huge \frac{10}{12} = \frac{10 \div 2}{12 \div 2} = \frac{5}{6} [/tex]
5/6 is the right answer.Hello can someone please help me. I'll give 50 points.
How many solutions will this system of equations have?
y = -3.5x - 3.5
y = -3.5x + 3.5
Rewrite the function by completing the square. f(x)=x^2−2x+17
Answer:
[tex]f(x) = {x}^{2} - 2x + 17 \\ completing \: squares \\ divide \: the \: sum \: by \: 2 \: and \: the \: result \: to \: the \: {x}^{2} and \: subtract \: it \: from \: the \: product \\ in \: this \: case. \: our \: sum \: is \: 2 \\ f(x) = ({x}^{2} \times \frac{2}{2} ) + (17 - \frac{2}{2} ) \\ f(x) = {(x + 1)}^{2} + (17 - 1) \\ f(x) = {(x + 1)}^{2} + 16[/tex]
Find the slope of the line
Answer:
The slope of the line is 0, or undefined
Step-by-step explanation:
There is no action of rising or declning, therefore, it must be 0 or undefined.
Find the slope intercept equation of the line
Answer: The answer is y=2x-2
Step-by-step explanation: Slope intercept form is y=mx+b. m= the slope and b=the y-intercept (the point on the y axis that the line crosses). The slope using rise/run is -2/1 making m=2 and the point on the y axis where the line intercepts is -2.
uhhh-
The straight line L, has equation y = 3X - 4.
The straight line L2, is perpendicular to L, and passes through the point (9, 5). Find an equation of line L2. Show your working out.
Step-by-step explanation:
y = mx + c, where m is the slope of the line and c is the y-intercept.
We have y = 3x - 4 as line L.
Slope of line L = 3
=> Slope of line L2 = -1/3
We have y = -1/3 x + c as our line L2 equation.
When x = 9, y = 5.
=> (5) = -1/3 * (9) + c
=> 5 = c - 3, c = 8
Hence the answer is y = -1/3 x + 8.
The equation of required line [tex]l_2[/tex] is .
Y = mX+c
[tex]Y = \frac{-1}{3} x + 2[/tex]
Given, The equation of straight line L.
Y=3X-4
compareing with the standard equation of line
Y=mX+c
slope of the equation of line L is [tex]m_1[/tex]= 3.
The product of slopes of two perpendicular lines is -1.
[tex]\rm m_1. m_2 = -1[/tex]
[tex]3.m_2 = -1\\m_2 = \frac{-1}{3}[/tex]
The slope of perpendicular line is and it passes through the point (9,5). So the equation of the line is
[tex]y = m_2x+c[/tex]
[tex]5 = -\frac{1}{3} . 9 + c[/tex]
5 = -3 + c
5+3 = c
c = 8
Therefore, the equation of required line [tex]l_2[/tex] is .
Y = mX+c
Y = [tex]\frac{-1}{3} X +8[/tex]
For the more details follow the link given below.
https://brainly.com/question/24143133?
Solve the system by substitution.
x - 5y = 1
- 2x + 9y = -1
what is the solution?
Answer:
x = − 4 .y = − 1
Step-by-step explanation:
hi, back at it agian. i dont think this would be to hard. delta math sucks... i need this asap! ·ω·
Answer:
I can't read the words the picture is to grainy
Answer:
10% would be 6
Step-by-step explanation:
First you want to find the 100 percent amount to turn 40 into 100 you need to multiply it by 2.5 so you want to take 24 and multiply by 2.5 which equal 60 and 60 divided by 10 is 6
Hypotheses are______.
hypothesis is a guess that you test run.
6.) Which is the best description of the equation
below?
2x-2y=6
A Cause I'm big brain and we learned that
3. The graph at the right shows
Lanna's total distance in miles
for each day she is training for a marathon. What is her distance on
day 10?
A.21 miles C.30 miles
B. 27 miles D.33 miles
Answer:
30 miles
Step-by-step explanation:
there is three miles per day so u count by 3 up to ten days and you’ll get 30 (10,30) option c
In 1992, there were approximately 141 million births and 49 million deaths worldwide. What was the
change in the world's population?
Answer:
The population increased by 92 million.
Step-by-step explanation:
141 - 49 = 92
How do you write 8.2 × 102 in standard form?
Answer:
If this is supposed to be scientific notation then it is 820. if it is 8.2 times one hundred and two then it is 836.4.
Step-by-step explanation:
Hope this helps. :)
Lisa solved the equation x + 6 = 8 + 7x and claimed that the solution is X=-6. Is she
correct? Explain.
Answer:
she is wrong x would be -1/3
Step-by-step explanation:
-6x - 2 = 0
x = -2/6 which is equal to -1/3
Figure shows 2 lines
Answer:
provide pictures next time
1 is 25% of what number?
Answer:
4
hope it helps.........
Answer:
1 is 25% of 4
Step-by-step explanation:
let the number be x,
so, 25% of x = 1
=》25/100 × x = 1
=》 1/4 × x = 1
=》 x = 1×4
=》 x = 4
hence the required number is 4
i hope u got it
These hieroglyphics on this screen give me a headache plz help
Answer:
XY = DE
Step-by-step explanation:
PLEASEE HELP IM BEGGING YOU
Answer:
1 7/12
Step-by-step explanation:
Its 1 7
/12
Answer:
1 7/12
Step-by-step explanation:
Hope this helps!
Brainiest?
the integers -10 and 10 are=
Answer:
Opposites of each other?
Step-by-step explanation:
I am not sure, the only thing that is not making them equal to each other is that they have opposite signs.
You work on a concrete crew starting a construction project. Once the pouring begins, it must continue non-stop until it is completed. Your crew will work an 8-hour shift along with two other crews. The total project requires 175,000 yards of concrete. Your supervisor estimates that each crew will pour around 1200 yards per hour. How many consecutive days should you plan to work on this project? A3 B.6 C. 18 D. 27
I need to know the explanation on how to find the answer out as well, please and thank you.
Answer:
C
Step-by-step explanation:
Kim rols three 6 sided dice.
The product of her numbers is 60
a) What numbers could she have rolled?
Answer:
2,5,6
Step-by-step explanation:
2 * 5 * 6 = 60
Kim rolls three 6 sided dice. The product of her numbers is 60. So, the numbers are 2, 5, and 6 and this can be determined by using arithmetic operations.
Given :
Kim rolls three 6 sided dice.The product of her numbers is 60.The following steps can be used to determine the number could Kim has rolled:
Step 1 - Let the three numbers be a,b, and c.
Step 2 - Given that the product of these numbers is 60.
[tex]a\times b \times c = 60[/tex]
Step 3 - So, the possible values of a, b, and c are:
a = 2
b = 5
c = 6
Step 4 - Check the product of a, b, and c if it is 60 then it is correct.
[tex]2\times 5\times 6 = 60[/tex]
For more information, refer to the link given below:
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ben made 14 field goal he made about 74% how many did he try
A florist received a shipment of 16 dozen roses. The original order was for 20 dozen. What percent of the order did NOT arrive?
Answer:
20 percent
Step-by-step explanation:
Answer:
20%
Step-by-step explanation:
Hope this helps :)
Compute the mean of the following population values:
6, 3, 5, 7, 6.
Answer:
The mean (average) is 5.4 or 5 if you're rounding.
Step-by-step explanation:
Mean is the average of all of the numbers.
Add them up: 6+3+5+7+6 = 27
Divide 27 by the amount of numbers you have(5): 27/5
Solve: 5.4
The mean of the given values 6, 3, 5, 7, and 6 will be 5.4.
What is mean?mean is the average of a data set. Mean gives us the idea of that how much amount of overall data have.
Mean = sum of data / Number of data
For example, if you have marks in 5 subjects like 40,45,44,46,48 then the mean will be
( 40 + 45+ 44 + 46 + 48) /5 = 44.6.
Given the data set;
6, 3, 5, 7, 6
Mean = (sum of data) / (number of data)
Mean = (6 + 3 + 5 + 7 + 6)/5
Mean = 27/5
Mean = 5.4
Hence the mean will be 5.4.
For more about mean
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