Answeeeeeeeeeeeeeeeeeeeeeeeeeeeeeqrqr
Step-by-step explanerqation:
eqrqrrqer
Use a calculator to solve the equation.
−9.5x + 0.81 = −2.99
The solution is x =
Answer:
x = 0.4
Step-by-step explanation:
Answer:
x=0.4
Step-by-step explanation:
Given function:
-9.5x+0.81=-2.99find xCombine first value by 0.81:
-9.5+0.81=-2.99-19x/2+0.81=-2.99Subtract 0.81 both from sides:
-19x/2+0.81-0.81=-2.99-0.81Simplifly -19x/2:
-19x/2=-3.8Multiply all terms by similar term:
2·19x/2=2·3.8Divide both terms by -7.6:
-19x/-19-7.6/19=0.4Therefore, x=0.4.
HELP ASAP!!!
Why is it important to talk about the sad, terrible parts of history as well as the good parts?
Answer:
Although this is the math forum, I can still answer this
Step-by-step explanation:
Sad and terrible parts of history show our mistakes and the good parts show our improvements from them. It is important to include all the parts so that modern society can learn from them.
Exit Ticket: Show all your work
-4x - 6 = -14
what does x equal ? show yur work
Answer:
-4x - 6 = -14
+ 6. + 6
-4x = -8
——————
-4. -4
—————
x = 2 :) copy it down like that :)
Step-by-step explanation:
solve for the value of p
Answer:
43°
Step-by-step explanation:
p + 7° + 3p+ 1° = 180° ( Being linear pair)
4p + 8° = 180°
4p = 180° - 8 °
4p = 172°
p = 172° / 4
p = 43°
Hope it will help :)❤
(бх -Зу = 6
(2x-y=-5
Answer:
6-
Step-by-step explanation:
Your answer should be written in paragraph/essay format.
Any sources used should be cited at the bottom of your paper.
All answers should show you have learned something from Unit 9. Material from other units will not be graded for this assignment.
If you are stuck, you can think about the following topics: textile mills, interchangeable parts, the Lowell System, unions, labor reform, steamboats, railroads, coal, the telegraph, and/or new inventions.
A group of friends were working on a student film that had a budget of $1000. They used $370 of their budget on costumes. What percentage of their total budget did they spend on costumes?
Answer:
37%
Step-by-step explanation:
take aways the zero from 370 and one zero from 1000 then you get 37%
25% of Mr. Foster's class chose an amber background for their school picture. If 6 students chose an amber background, how many students are in Mr. Foster's class?
Answer:
24 studentsStep-by-step explanation:
25% of a hundred is one-fourth and because there are six students in a fourth of the whole we are multiplying four and six. 6x 4 is 24.
The percentage is calculated by dividing the required value by the total
value and multiplying by 100.
Required percentage value = a
total value = b
Percentage = a/b x 100
25% = 6 students
100% = 24 students
The total number of students in Mr. Foster's class is 24.
What is a percentage?The percentage is calculated by dividing the required value by the total
value and multiplying by 100.
Required percentage value = a
total value = b
Percentage = a/b x 100
Example:
50% = 50/100 = 1/2
25% = 25/100 = 1/4
20% = 20/100 = 1/5
10% = 10/100 = 1/10
We have,
Number of students who chose an amber background = 6
25% of Mr. Foster's class chose an amber background for their school picture.
This means,
25% = 6
The total number of students = 100%
Now,
25% = 6 students
Multiply 4 on both sides.
4 x 25% = 4 x 6 students
100% = 24 students
Thus,
The total number of students in Mr. Foster's class is 24.
Learn more about percentages here:
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What can be said about 10 and -10?
Answer:
They are complete opposites
Step-by-step explanation:
Answer:
they are opposites
Step-by-step explanation:
Two hundred forty and twenty-five hundredths in standard form
answer:
240.25
step-by-step explanation:
look at what it says about the number and then decidetwo hundred forty - - > 240
the number sounds just like what it saystwenty-five hundredths - - > .25
the numbers would be after the decimal since it is "hundredths"PLEAAASSSSEEEEE HELP ME WITH THIS I REALLY NEED HELP PLEASE PUT THE CORRECT ANSWER
Given tan0 = 7/24 use the Pythagorean theorem to find the value of sin 0
Answer:
Step-by-step explanation:
Don't use 0 (or any other number) to replace θ. Use a letter variable such as x.
tan(x) = 7/24
sin(x)/cos(x) = 7/24
sin(x) = 7/√(7²+24²) = 7/√625 = 7/25
helpppppp?!?!??!?!?!,!,!?!
Answer:
ok so I couldn't find what the answer was and there didn't seem to be a virus. Soooo I dunno what that link is. The account that posted it was a bot if you click on the profile it says it deactivated.
Please please help me it really late we’re I am so and I Need to bring my grade up please
Answer
here :)
Step-by-step explanation:
for 1) the answers are...
x y
-6 -10
3 -1
-7 -11
0 -4
-3 -7
for number 2 the answers are...
x y
6 -2
1 -7
-8 -16
-7 -15
2 -6
for number 5 the answers are...
x y
1 -6
2 -5
-6 -13
6 -1
-9 -16
for number 6 the answers are...
x y
8 64
7 56
6 48
9 72
-8 -64
for number 9 the answers are...
x y
2 -3
-9 -14
8 3
-5 -10
9 4
for number 10 the answers are...
x y
5 -15
-9 27
7 -21
0 0
-3 9
Diego has 200 students in his grade which is 2 times as many as Lin. Lin’s grade has x students. Write this equation.
ILL GIVE BRAINLEIST FAST PLZ 15 POINTS
Answer:
200 ÷ 2 = x
Step-by-step explanation:
Diego has 2 times as many a Lin. That means to find Lin's student number, we would have to split 200 in half.
Hope this helps!
A two-sample tt-test for a difference in means will be conducted to investigate whether the average amount of money spent per customer at Department Store M is different from that at Department Store V. From a random sample of 35 customers at Store M, the average amount spent was $300 with standard deviation $40. From a random sample of 40 customers at Store V, the average amount spent was $290 with standard deviation $35. Assuming a nuk hypothesis of no difference in population means, which of the following is the test statistic for the appropriate test to investigate whether there is a difference in population means Department Store M minus Department Store V?
A. t= √300-290 /35^2/40 + 40^2/35
B. t = 300-290 / √40^2 +35^2 / 35+40
C. t= 300-290 / √40+35 / 35+40
D. t= 300-290 / √40^2 /35 +35^2/ 40
E. t= 300-290 /√40 /35+ 35/40
a. A
b. B
c. C
d. D
e. E
Answer: D
Step-by-step explanation:
The test statistic is t = 1.14.
What is Central Limit Theorem?The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean and standard deviation , the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean and standard deviation .
here, we have,
Before testing the hypothesis, we need to understand the central limit theorem and subtraction of normal variables.
For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.
For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean and standard deviation
Subtraction between normal variables:
When two normal variables are subtracted, the mean is the difference of the means, while the standard deviation is the square root of the sum of the variances.
From a random sample of 35 customers at Store M, the average amount spent was $300 with standard deviation $40.
This means that , μ_m = 6.761
From a random sample of 40 customers at Store V, the average amount spent was $290 with standard deviation $35.
This means that , μ_v = 5.534
Assuming a null hypothesis of no difference in population means
At the null hypothesis, we test that there is no difference, that is, the subtraction of the means is 0. So
H₀ = 0
At the alternate hypothesis, we test if there is difference, that is, the subtraction of the means is different of 0. So
H₁ ≠ 0
The test statistic is:
t = X - μ / s
In which X is the sample mean, is the value tested at the null hypothesis, and s is the standard error.
0 is tested at the null hypothesis:
This means that μ= 0
From the samples:
X = 10
s = 8.737
The test statistic is t = 1.14.
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Complete question:
A two-sample t-test for a difference in means will be conducted to investigate whether the average amount of money spent per customer at Department Store M is different from that at Department Store V. From a random sample of 35 customers at Store M, the average amount spent was $300 with standard deviation $40. From a random sample of 40 customers at Store V, the average amount spent was $290 with standard deviation $35. Assuming a null hypothesis of no difference in population means, what is the test statistic for the appropriate test to investigate whether there is a difference in population means?
A bank offers a savings account that accrues compound interest quarterly at a rate of 4%. What is the initial amount needed in this account so that after 8 the account has a total of 439?
Please help!!! I need the equation and the answer itself
Answer:
439(1+4/100x8=579.48
What is the product of (x−4) and (x2−7x+10)?
x2−6x+6
x2−8x+14
x3−11x2+38x−40
x3−3x2−18x−40
What are the solutions of 12 - x² = 0
Answer:
2sqrt(3),-2sqrt(3)
Step-by-step explanation:
12-x^2=0
-x^2=-12
x^2=12
x=-sqrt(12),sqrt(12)
x=2sqrt(3),-2sqrt(3)
Find the slope of the line from the table below
Answer:
m = -10
Step-by-step explanation:
m = y2 - y1 / x2 - x1
m = 60-50 / -2 - -1
m = 10/ -1
m = -10
Answer:
-10
Step-by-step explanation:
We can use two points from the table to find our slope.
Remember, the slope formula is [tex]\frac{y2-y1}{x2-x1}[/tex]. We can use the points (-1,50) and (-2,60). Let's substitute the values into the formula.
[tex]\frac{60-50}{-2-(-1)}[/tex]. This gets us to [tex]\frac{10}{-1}[/tex], so our slope is -10.
Hope this helps!
A circle has a radius of 5 units. What is the diameter of the circle?
Answer:
10
Step-by-step explanation:
5x5=10
Answer:
10 units
Step-by-step explanation:
5*2=10
From the figure, your friend concludes that m<BAD > m<BCD. How would you correct your friend's mistake?
Answer:
BC > AD
Step-by-step explanation:
The opposite side to BC is greater, therefore making m<BCD > m<BAD. Since the legs are congruent, this is the only difference that need-be mentioned.
As the opposite angle of a larger side of a triangle is larger hence
m∠BAD > ∠mBCD.
What is congruency?We know two similar planer figures are congruent when we have sides or angles or both that are the same as the corresponding sides or angles or both.
From the figure itself, ΔABD and ΔBCD share a common side BD.
Given, Side AB is congruent to side CD and Side AD is greater than side BC.
We know opposite angle of a larger side of the triangle is larger.
Therefore, m∠BAD > ∠mBCD.
learn more about congruency here :
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If a right circular cone is intersected by a plane only at its vertex, as in the picture below, what shape is produced?
Answer:
A right circular cone can be intersected by some plane to produce circle, ellipse, hyperbola depending upon where the plane is crossing the cone.
But if the plane crosses at the vertex. Just one point is crossed.
Answer:
a point hope this helps
Find the center and the radius of the circle. (x-2)^2+(y+3)^2=70
Answer:
the center is (2,-3)
the radius is √70
Choose the equation that you can use to solve
for x:
3-6 = -3
X - 1 = X - 1
x2 - x = 6
-y-y=-24
Step-by-step explanation:
step 1. #1 has no x
step 2. #2 has infinite solutions
step 3. #4 has y but no x
step 4. x^2 - x = 6 can be solved for x.
Help please all you have to do is use fractions strips to find each sum and simplify if possible
Step-by-step explanation:
i hope this can help you.
Pleaseeeeeeeeee helppppp me no links
Answer:
Base:12
Volume:76.8
Step-by-step explanation:
The base is 3*8/2
which is 12
and the volume is base * height so
12*6.4
=76.8
Hope this helps :) Giving me brainiest would help a lot :))
Please help me I will give brainliest. You need to use a^2+ b^2=c^2 format
Answer:
x = 9
Step-by-step explanation:
1) a²+12²=15²
2) a²+144=225
3) a²=81
4)[tex]\sqrt{81\\}[/tex]=9
What are the solutions of the quadratic equation (x + 3)2 = 49? A. O x = 2 and x = - 10 B.O.x = 4 and x = -10 C.O x=-2 and x = -16 D.O x = 40 and x = -58
Answer:
B. x = 4 and x = -10
Step-by-step explanation:
First, expand the equation
(x + 3)² = 49
(x + 3)(x + 3) = 49
x² + 6x + 9 = 49
Subtract 49 from both sides
x² + 6x -40 = 0
Factor
(x + 10)(x - 4) = 0
Solve
x + 10 = 0
x = -10
x - 4 = 0
x = 4
So, the correct answer is B. x = 4 and x = -10
Quick please! I need it
Answer: A = 1/2 b x h
Step-by-step explanation:
Find the Area of the figure below, composed of a rectangle and a semicircle. Round to
the nearest tenths place.
10
6
Can somebody please help me
Answer:
Area = 74.1 square units
Step-by-step explanation:
Area of the composite figure = Area of the rectangle + Area of the semicircle
Area o the rectangle = Length × Width
= 10 × 6
= 60 square units
Area of the semicircle = [tex]\frac{1}{2}\pi r^{2}[/tex]
Here, r = radius of the semicircle
For the semicircle with radius = [tex]\frac{6}{2}[/tex] = 3 units
Area = [tex]\frac{1}{2}\pi (3)^{2}[/tex]
= 4.5π
= 14.14 units²
Total area of the composite figure = 60 + 14.14
= 74.14 square units ≈ 74.1 square units