Step-by-step explanation:
the correct one is a = (-b)/2
What is the value of n?
Answer:
A
Step-by-step explanation:
180-133= 47
180-142= 38
47+38= 85
180-85= 95
If the inside of n is 95, n has to be 85
Can someone help me please
Answer:
A
Step-by-step explanation:
Answer: It has to be A
Step-by-step explanation: It's the only statement that makes sense.
What is the slope of the line graphed below?
(-2,2)
(3, 1)
Answer:
hey. your questions is not complete. pls add an attachment of the graph to your question
Answer:
[tex]-\frac{1}{5}[/tex]
Step-by-step explanation:
To find the slope, the formula is [tex]\frac{y2-y1}{x2-x1}[/tex]
[tex]\frac{1-2}{3-(-2)}=-\frac{1}{5}[/tex]
Hope this helps
Thirty less than four times a number is fifty
4x-30= 50
mark me brainliestttt :))
Answer:
The number is 20
Step-by-step explanation:
Let the number be x
Four times the number means = 4x
30 less than the number is 50 means = 4x - 30 = 50
Solve for x :
4x - 30 = 50
4x - 30 + 30 = 50 + 30 [ adding 30 on both sides ]
4x = 80 [ - 30 + 30 = 0 ]
x = 20 [ dividing by 4 on both sides ]
Name two grouping symbols.
Answer:
parentheses ( ), brackets [ ], and braces { }—are used to group numbers or variables (letters
Step-by-step explanation:
I put three for if u need hope this helps:)
simplify the following expression <3
Answer:
4x^12y^6/z^5
Step-by-step explanation:
See image below:)
FYI you can use the app photo math, you just take a pic of the problem and it gives you the answer and explains the steps and it is free.
Write the following series in sigma notation. 8+18+28+38
Answer:
[tex]\Sigma\left {n} \atop {1}} \right. (5n^2+3n)[/tex]
Step-by-step explanation:
Given the series 8 + 18 + 28 + 38
First, we need to find the sum of the nth term of the sequence as shown
Sn = n/2[2a+(n-1)d]
n is the number of terms
a is the first term = 8
d is the common difference = 18-8 = 28-18 = 10
Substitute
Sn = n/2 [2(8)+(n-1)*10]
Sn = n/2 [16+10n-10]
Sn = n/2[10n+6]
Sn = 2n/2(5n+3)
Sn = n(5n+3)
Sn = 5n²+3n
In Sigma form;
[tex]\Sigma\left {n} \atop {1}} \right. (5n^2+3n)[/tex]
Maria is asked to write down a prime number between 10 and 20 she writes down 17 is she right explain your answer
Answer:
YES
Step-by-step explanation:
PRIME NUMBER BETWEEN 10 & 20 ARE 11,13,17,19-four
Step-by-step explanation:
it has no factor excluding 1 and itself
please help me simplify the expression and please show work!!! <3
Step-by-step explanation:
[tex] \frac{x + 4}{3 {x}^{2} - 12x - 96} = \frac{x + 4}{3( {x}^{2} - 4x - 32) } = \frac{x + 4}{3(x - 8)(x + 4)} [/tex]
[tex] = \frac{1}{3(x - 8)} = \frac{1}{3x - 24} [/tex]
What is the volume of the rectangular prism?
3 cm
8 cm
2 cm
cm3
Answer:
48 cm^3
Step-by-step explanation:
Since there is no image, I’m just going to assume that these three measurement are the length, width, and height of the rectangular prism:
The formula for the volume of a rectangular prism is length x width x height.
Use formula with given dimensions:
3 x 8 x 2 = 48
Volume is measured in cubic centimeters
(cm in this case)
Therefore, the volume of the rectangular prism is 48 cm^3
Hope this helps!
Find the product of (x + 3) (x - 18)
Answer:
x^2-15x-54
Step-by-step explanation:
(x+3)(x-18) Multiply them all
x^2-18x+3x-54
ans=x^2-15x-54
Write the formula for the area of a trapezoid
Answer:
Step-by-step explanation:
A=(a+b)/2 x h.
R(-9, 4) and S(2, -1); Find T.
Answer:
AYYYYYYYYYYYYYYYYYYYYY
Step-by-step explanation:
HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPp
Answer:
4. 52sq.ft
5.25sq.ft
Step-by-step explanation:
In attachment
Find the area of the figure shown
Answer:
Step-by-step explanation:
Suppose X is a random variable with a mean of 10 and a variance of 100. Suppose Y is a random variable with a mean of 2 and a standard deviation of 16. Also, suppose X and Y are independent. What is the mean of 10 X + 3 Y?
Answer:
[tex]E(10x + 3y) =106[/tex]
Step-by-step explanation:
Given
[tex]E(x) =10[/tex]
[tex]Var(x) = 100[/tex]
[tex]E(y) =2[/tex]
[tex]Var(y) = 16[/tex]
Required
[tex]E(10x + 3y)[/tex]
To do this, we make use of the following equation
[tex]E(ax + by) =aE(x) + bE(y)[/tex]
So, we have:
[tex]E(10x + 3y) =10 * E(x) + 3 *E(y)[/tex]
[tex]E(10x + 3y) =10 * 10 + 3 *2[/tex]
[tex]E(10x + 3y) =100 + 6[/tex]
[tex]E(10x + 3y) =106[/tex]
In the 30-60-90 triangle below, side s has a length of ___ and side q has a length of ___.
Answer:
The answer is D.
Step-by-step explanation:
The side lengths for this special triangle is represented with x, x[tex]\sqrt{3}[/tex] , and 2x
if the side length that sees 90 degrees is 10 (2x and x = 5 in this case)
so s (the side length that sees 30 degrees) is = 5
and q (the side length that sees 60 degrees) = 5[tex]\sqrt{3}[/tex]
Rhombus ABCD has a diagonal BD¯¯¯¯¯. m∠ADB=(5x+10)° m∠CDB=(4x+19)° What is the m∠ADC ? Enter your answer in the box º
30 POINTS PLEASE HELP ASAP
Answer:
110°
Step-by-step explanation:
5x+10=4x+19
5x-4x =19-10
x = 9
m L ADB = 5(9)+10=45+10=55°
so m L ADC = 2×55° = 110°
Lola tossed a coin twice. She made a tree diagram to show the possible outcomes. Which tree diagram shows the sample space for two tosses of a coin?
Step-by-step explanation:
note : H for head, T for tail
The hypotenuse of a right triangle Measures 17 cm and one of its legs measures 8 cm. find the measure of the other leg if necessary round to the nearest 10th
I need the answer find the value of x
Answer:
1. x = 126
angle POS = 33
2. x = 31
angle MOL = 118
Step-by-step explanation:
for question one, 147 degrees equals x + 21
so x = 126
147 plus 147 equals 294
360-294 equals 66
66/2 equals angle POS
angle POS = 33
for question 2, 62 degrees equals 2x
62 divided by 2 is 31
x = 31
62 + 62 = 124
360-124 = 236
236/2 = 118
angle MOL = 118
Answer:76
Step-by-step explanation:
67
In triangle ABC, the size of the B is 4 times the size of angle A, and the size of angle C is 14 cel less than 5 times the size of the.
The size of angle a is ____
The size of angle b is____
The size of angle c is________
Answer:
[tex]A = 19.4[/tex]
[tex]B = 77.6[/tex]
[tex]C =83[/tex]
Step-by-step explanation:
Given
By interpreting each line, we have:
[tex]B = 4A[/tex]
[tex]C = 5A -14[/tex]
Required
Solve for A, B and C
In a triangle,
[tex]A + B + C = 180[/tex]
Substitute expressions for B and C
[tex]A + 4A + 5A - 14 = 180[/tex]
[tex]A + 4A + 5A = 180+14[/tex]
[tex]10A = 194[/tex]
Solve for A
[tex]A = 194/10[/tex]
[tex]A = 19.4[/tex]
[tex]B = 4A[/tex]
[tex]B = 4 * 19.4[/tex]
[tex]B = 77.6[/tex]
[tex]C = 5A -14[/tex]
[tex]C =5 * 19.4 - 14[/tex]
[tex]C =83[/tex]
Trigonometry please help
Answer:
7.5
Step-by-step explanation:
[tex]x = 10 \tan \: 37 \degree \\ \\ \therefore \: x = 7.535540501 \\ \\ \therefore \: x \approx 7.5[/tex]
Answer:
x = 7.5
Step-by-step explanation:
tan = opp/adj
tan 37 = x/10
multiply both sides by 10
10 * tan37 = x
x = 7.535540501027942
Rounded
x = 7.5
11. Choose the proportion that represents this problem:
If one meter is approximately 3.28 ft, how many meters are
in 20 ft?
a) 3.28
20
b) 3.28
20
1
1
m
O ) c) 3.28
20
1
d) 20
3.28
1
m
т
Answer:
D is the answer
Step-by-step explanation:
Which of the following best shows the distributive property?
1. 2(2 - 3) = 2(-1)
2. 2(2 - 3) = 2(2) - 2(3)
3. 2 - 3 = (-3) + 2
4. 2 + (2 - 3) = (2 - 2) + 3
Answer:
number 2
Step-by-step explanation:
2x2=4
2x-3=-6
4-6=-2
2x2=4
-2x3=-6
4-6=-2
Alguien puede ayudarme?
Answer:
I don’t understand you language
Step-by-step explanation:
Make it in English
2x+ 4y =16 -2x- 3y = -6 solve this system of equations using the elimination method
[tex] \large{ \boxed{ \boxed{ \tt{☂ \: OUR \: FINAL \: ANSWER : \underline{ \tt {x = - 12 \: and \: y = 10}}}}}✓}[/tex]
See the attached picture! Let me know if you have any questions regarding my answer! ツ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁
Answer:
[tex] \small \sf \: x = - 12 \: \: and \: y = 10[/tex]
Step-by-step explanation:
2x + 4y = 16.
-2x - 3y = -6
Add both equation ;
[tex] \small \sf \: \: \: \: \: 2x + 4y = 16 \\ + \small \sf \: \: \underline{ -2x - 3y = -6 }\\ \small \sf \: \: \: \: \: \underline{ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \ \blue{y = 10}} [/tex]
Therefore , y = 10
Substitute the value of y in the first equation
2x + 4 = 16
2 x + 4 × (10) = 16
2x + 40 = 16
subtract 40 from both side
2x + 40 - 40 = 16 - 40
2x = - 24
divide each side by 2
2x/ 2 = - 24 / 2
x = - 12
Select the correct answer from each drop-down menu.
What is the end behavior of function h?
h(x) = -4x2 + 11
As x approaches negative infinity, h(x) approaches
As x approaches positive infinity, h(x) approaches
Answer:
The first is negative and the second is also negative. Just took the test and passed.
Step-by-step explanation: Step by Step
Because the variable has an even power, we will see that:
As x approaches -∞, h(x) approaches -∞As x approaches ∞, h(x) approaches -∞.What is the end behavior of h(x)?Here we have h(x) = -4x^2 + 11
Notice that the variable is squared, this means that the sign does not matter, the outcome of:
-4x^2 will always be negative. So in both ends (when x tends to infinity and negative infinity), we will have the same end behavior.
When we take that limit, -4x^2 will just tend to negative infinity, then in both cases, the function tends to negative infinity.
So we have:
As x approaches negative infinity, h(x) approaches negative infinity.As x approaches positive infinity, h(x) approaches negative infinity.If you want to learn more about limits, you can read:
https://brainly.com/question/5313449
The_____ is the result of the sum of the numbers being divided by how many numbers are in set.
Answer:
Mean
Step-by-step explanation:
Mean
less precisely called the average
Thirty-five percent of adult Americans are regular voters. A random sample of 250 adults in a medium-size college town were surveyed, and it was found that 110 were regular voters. Estimate the true proportion of regular voters with 90% confidence and comment on your results.
Answer:
Hence the true proportion is (0.388, 0.492).
Step-by-step explanation:
Given n=250,
[tex]p= 110/250 =0.44[/tex]
[tex]a=0.1, |Z(0.05)|=1.645[/tex] (check standard normal table)
So 90% CI is
[tex]p ± Z*√[p*(1-p)/n]\\0.44 ± 1.645*sqrt(0.44*(1-0.44)/250)\\ ( 0.388, 0.492)[/tex]