Answer:
x=2 y=-1
Step-by-step explanation:
multiply the top equation by negative 2. then it is -7=-14
then you dive and find out that x=2 and plug it inot the equation and solve for x 10+?=9 which is -1
Answer:
x=2
y=-1
Step-by-step explanation:
make it so that you can cancel out the y
to do this multiply the top equation by 2
10x+2y=18
3x+2y=4
subtract to get rid of 2y
7x=14
x=2
substitute the x into one equation
3(2)+2y=4
6+2y=4
2y=-2
y=-1
Help me please i really need it so i can relax this weekend
The diffence between a number x and 13 is 18
Need help rlly quick (3)
Answer:
-2 negative
Step-by-step explanation:
so if x = 0 then forget it is there then do 2-4=negative 2
hope this helped
A computer’s random number generator produces random integers from 1 to 50. What is the probability that the first 3 integers generated are single-digit numbers?
0.0058
0.0080
0.5120
0.5514
Answer:
0.0058
Step-by-step explanation:
Probability is defined as the ratio of the possible outcome to the total outcome. The number of single-digit numbers between 1 and 50 is 9 ( from 1 to 9). As such, the probability of generating a single digit integer is
P(single) = 9/50
The probability that the first 3 integers generated are single-digit numbers
= 9/50 * 9/50 * 9/50
= 0.18 * 0.18 * 0.18
= 0.005832
This may be approximated to 0.0058
In Game 1, Eli struck out 25 times in 75 times at bat.
In Game 2, he struck out 30 times in 100 times at bat.
In Game 3, he struck out 37 times in 120 times at bat.
struck out
'at bat
What proportion represents the percent of
strike outs per at bats?
Answer:
p = 31.19%
Step-by-step explanation:
Proportions and Percentages
A proportion is calculated as a division between two numbers. The result can be given as a decimal or as a percentage.
If we want to calculate the percent of a number N with respect to another number M, the formula is:
[tex]\displaystyle p=\frac{N}{M}*100\%[/tex]
Eli had some performances when playing baseball. Struck out 25 times in 75 times at bat, 30 times in 100 at-bats, and 37 times in 120 at-bats.
The total struck outs were: N= 25+30+37=92 and the total at-bats were: 75+100+120=295. The proportion of strikeout ber at-bats is:
[tex]\displaystyle p=\frac{92}{295}*100\%[/tex]
p = 31.19%
Can someone please help me out or give me the answers please
Answer:
Example:
X = the first point, so say the point was 2, and the equation for y was, Y=2x +1, you would do 2x2=4 and then 4+1+5 so, for point y it would be, Y=5.
I don't know if that makes sense but yeah.
Use the LCD to rewrite
3/4 5/8 1/10
with the same denominator.
Determine whether or not the given value is a solution for the equation. Answer Yes or No
y/12=2;y=24
300 students took a survey on a new recycling project. The percent of students who supported the recycling project was greater than 50% but less than 75%. How many students supported the recycling project?
Answer:76
Step-by-step explanation:
):!/
The function y= x2 - 10x+ 31 has a
value of
Answer:
y = 6 at x = 5Step-by-step explanation:
It is assumed the question is about finding the minimum value as the given function has no maximum value, it is + ∞ as the coefficient of x² is positive
The minimum/maximum value of a quadratic function is the vertex, which is at:
x = -b/2aFor the given function y = x² -10x + 31, the vertex is:
x = - (-10)/2*1 = 10/2 = 5The value of y at this point is:
y = 5² - 10*5 + 31 = 25 - 50 + 31 = 6The point is
(5, 6)i will mark brainliest
A boy walks at a speed of 4 km/hr. How much time does he take to walk a distance of 20 km?
Answer:
It takes 5 hours
Step-by-step explanation:
Time=distance/speed/rate
Time=20km/4km/hr
Time= 5hours
Select the correct answer. What is the solution to this equation?
324=4(3)2x
a. x=8
b. x=4
c. x=2
d. x = 1
Answer
C. x=2
Step-by-step explanation:
This is due to 2(2) = 4
then 3^4=81
81*4=324
The solution to equation [tex]324=4(3)^{2x}[/tex] is x = 2.
What is exponential function?An exponential function is a mathematical function of the following form:
[tex]f(x) = a^{x}[/tex]. where x is a variable, and a is a constant called the base of the function.
Given exponential equation
[tex]324=4(3)^{2x}[/tex]
[tex]4(3)^{2x}=324[/tex]
[tex]3^{2x} =\frac{324}{4}[/tex]
[tex]3^{2x}=81[/tex]
[tex]3^{2x}=3^{4}[/tex]
When bases are equal, power should be equal.
2x = 4
x = 2
Hence, the solution to equation [tex]324=4(3)^{2x}[/tex] is x = 2.
Option C is correct.
Find out more information about exponential function here
https://brainly.com/question/14355665
#SPJ3
Find the area of this parallelogram
Answer:
260cm
Step-by-step explanation:
20x13=260
HELPPPPP MEEEE PLEASE
Answer: -6 i think
Step-by-step explanation:
Answer: -6
Step-by-step explanation: dont forget to mark me as brainlisit
PLS HELP ASAP THIS IS DUE IN 10 MINUTES
Answer:A number decreased by 40
Step-by-step explanation: I really don't feel like explaining this lol...
Marianna just completed her findings in her investigation of the importance
of sunlight in the growth of plants. She has to submit a report of no less than
4,900 words in 15 pages. She can only use two types of font for her report.
The normal font size allows 300 words per page while the smaller italic font
allows 350 words per page. What is the maximum number of pages in her
report that can be set using the normal font size?
Please I need help!!!!!
Answer:
17 pages
Step-by-step explanation:
if not that then 15 since it says "less than 4,900 words in 15 pages"
The standard form of a linear equation is given by
Answer:
standard form of linear equation is ax^2+bx+c
Find x if:
- B is between A & C;
-AB = x + 5;
-BC = 2(x-3); and
-AB ~= BC
Answer:
The value of x = 11
Step-by-step explanation:
Given
B is between A and C.AB = x+5BC = 2(x - 3)[tex]{\displaystyle {\overline {AB}[/tex] ≅ [tex]{\displaystyle {\overline {BC}[/tex]Determining the value of x
As B is between A and C, so
[tex]{\displaystyle {\overline {AB}[/tex] ≅ [tex]{\displaystyle {\overline {BC}[/tex]
as
AB = x+5BC = 2(x - 3)so
x + 5 = 2(x-3)
x+5 = 2x-6
2x-x = 5+6
x = 11
Therefore, the value of x = 11
Find the value of the expression below when x= 3.
x2 + 5
Answer:
11
Step-by-step explanation:
x*2 + 5
Subtitute
3*2 + 5
6 + 5
11
Answer:
11
Step-by-step explanation:
x is 3
2x+5
2(3)+5
6+5
11
4x +4< 9x +8 Reduce any fraction to the lowest term don’t know your number and don’t use mixed fraction
Answer:
x < - 4/5
Step-by-step explanation:
Given the inequality:
4x +4< 9x +8
Collect like terms :
4x - 9x < 8 - 4
-5x < 4
Divide both sides by - 5
-5x / - 5 < 4 / - 5
x < - 4/5
A family of 4 is buying cell phones. Each phone costs x dollars if the family buys the super plan which costs $89 for
each family member. The total cost for each family member to have a phone with the super plan is $1,952
Part A
Which equation represents this situation?
O4(2 + 89) = 1,952
O (x + 89) + 4 = 1,952
4x + 89 = 1,952
O 4x(89) = 1,952
Part B
What is the cost, in dollars, of each phone?
Each phone costs $
Ya
Answer: See explanation
Step-by-step explanation:.
From the question, the equation to illustrate the above question will be:
4(x + 89) = 1952
We can then solve further to get the value of x which will be:
4x + 356 = 1952
4x = 1952 - 356
4x = 1596
x = 1596/4
x = 399
Each phone cost $399
is y=-2/7x a proportional
anyone know the answer ?
Answer:
y ≥ -1x +2
Step-by-step explanation:
mZJ and m M are base angles of isosceles trapezoid JKLM. If mZJ = 18x + 8 and m_M=11x + 15 find m2K.
K
L
M
The question is incomplete. Here is the complete question.
m∠J and m∠Kare base angles of an isosceles trapezoid JKLM.
If m∠J = 18x + 8, and m∠M = 11x + 15 , find m∠K.
A. 1
B. 154
C. 77
D. 26
Answer: B. m∠K = 154
Step-by-step explanation: Isosceles trapezoid is a parallelogram with two parallel sides, called Base, and two non-parallel sides that have the same measure.
Related to internal angles, angles of the base are equal and opposite angles are supplementary.
In trapezoid JKLM, m∠J and m∠M are base angles, so they are equal:
18x + 8 = 11x + 15
7x = 7
x = 1
Now, m∠K is opposite so, they are supplementary, which means their sum results in 180°:
m∠J = 18(1) + 8
m∠J = 26
m∠K + m∠J = 180
m∠K + 26 = 180
m∠K = 154
The angle m∠K is 154°
solve the equation 11.9=-23.8x
Answer:
x = − 0.07983193
Step-by-step explanation:
the ratio of boys to girls in a class is3:2 there are 25 students in this class how many are girls how many are boys.
Answer:
Out of 25, the number of girls to boys is 15/10, which is equivalent to 3/2.
Step-by-step explanation:
for the given equation, enter the value of M when
x=3/2
x+2m=7/2
Answer:
Hope this helpsss plz vote brainliest
Step-by-step explanation:
Solve by elimination:
2x + 4y = 34
x+4y = 27
A (7,-5)
B (6,6)
(7,5)
(5,7)
Answer:
(7,5)
Step-by-step explanation:
{2x + 4y = 34
{4y = 27 - x
2x + 27 - x = 34
x=7
4y = 27 - 7
y = 5 so the answer is ( 7,5)
To gather information on customer satisfaction, a researcher randomly selects four store locations and interviews all the customers at those selected stores. This sampling technique is called:
Answer:
This sampling technique is called cluster
Step-by-step explanation:
Samples may be classified as:
Convenient: Sample drawn from a conveniently available pool.
Random: Basically, put all the options into a hat and drawn some of them.
Systematic: Every kth element is taken. For example, you want to survey something on the street, you interview every 5th person, for example.
Cluster: Divides population into groups, called clusters, and each element in the cluster is surveyed.
Stratified: Also divides the population into groups. However, then only some elements of the group are surveyed.
In this question:
The population is divided into groups(by stores), and all elements of the groups(all customers at the stores are sampled), which is the characteristic of a cluster sampling.
