Answer:
What is the question asking to answer?
Step-by-step explanation:
Answer:
$19:50
Step-by-step explanation:
Write a system of equations to represent the problem. Let x represent the cost of a binder, and let y represent the cost of a notebook.
Grace buys 4 binders and 7 notebooks for $26.50 total, so the equation 4x+7y=26.50 represents how much Grace spends.
Grace's friend buys 3 binders and 6 notebooks for $21.00 total, so the equation 3x+6y=21 represents how much her friend spends.
You can use this system of equations to find how much money Grace and her friend spend on notebooks:
4x+7y=26.50
3x+6y=21
Next, find how much Grace and her friend spent on notebooks. Start by finding the cost of one notebook. Use elimination to solve for y. .
3(4x+7y)=3(26.50)
–
12x+21y = 79.50
–
4(3x+6y)=
–
4(21)
–
12x–24y =
–
84
–
3y =
–
4.50
y = 1.50
Each notebook costs $1.50. Grace and her friend buy a total of 13 notebooks, so multiply to find how much money they spend on notebooks.
13$1.50=$19.50
Grace and her friend spend $19.50 total on notebooks.
find simple interest amount for 1000 for one year at 6%
Answer:
The ans is in the picture with the steps how i got it
(hope this helps can i plz have brainlist :D hehe)
Step-by-step explanation:
Algebra:
a(3b-1)=2b+2
Solve for b
Answer:
b = [tex]\frac{3ab - a - 2}{2}[/tex]
Step-by-step explanation:
We have an algebraic expression and are asked to solve for b.
a(3b - 1) = 2b + 2
To solve we need to isolate b :
Distribute :
(a(3b) - a(1)) = 2b + 2
3ab - a = 2b + 2
2b + 2 = 3ab - a
Subtract 2 from both sides :
2b = 3ab - a - 2
Divide 2 from both sides :
b = [tex]\frac{3ab - a - 2}{2}[/tex]
Answer:
b = 2+a/ 3a-2
Step-by-step explanation:
Find the volume of the oblique rectangular prism with length 9 cm, width 2 cm, and height 4 cm.
Answer:
36 cm
Step-by-step explanation:
there are 18 black socks and 12 Navy socks in your drawer the room is dark and you cannot turn on the light what is the least number of socks that you have to take out of the drawer to be certain that you have a pair of the same color
Answer:
3/5
Step-by-step explanation:
To have the best chance of pulling a pair with the same color you should try to get a pair of black socks. There is a 3/5 chance of pulling a black sock so this means for every 5 socks you pull you get 3 black socks or 2 navy socks. Either way you will get a pair of socks with the same color. (Double check to make sure I'm correct)
The least number of socks that you have to take out of the drawer to be certain that you have a pair of the same color is 5 and the color is black and this can be determined by using the given data.
Given :
There are 18 black socks and 12 Navy socks in your drawer the room is dark and you cannot turn on the light.
The following steps can be used in order to determine the least number of socks that you have to take out of the drawer:
Step 1 - According to the given data, the total number of black socks is 18 and the total number of Navy socks is 12.
Step 2 - The probability that the socks come out is black socks is given below:
[tex]\rm P_b = \dfrac{18}{12+18}[/tex]
[tex]\rm P_b = \dfrac{18}{30}=\dfrac{3}{5}[/tex]
Step 3 - The probability that the socks come out is navy socks is given below:
[tex]\rm P_n = \dfrac{12}{12+18}[/tex]
[tex]\rm P_n=\dfrac{12}{30}=\dfrac{2}{5}[/tex]
Step 4 - Compare both the probability.
[tex]\rm P_b>P_n[/tex]
So, the least number of socks that you have to take out of the drawer to be certain that you have a pair of the same color is 5 and the color is black.
For more information, refer to the link given below:
https://brainly.com/question/795909
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!
PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!
PLS SHOW THE WORK!!!!!!!!
Answer:
x=-4/11; y=-19/11
Step-by-step explanation:
Answer:
x = 4/11 ; y = 19/ 11
sorry i cant give you the explanation
i hope this will help u
pls add me as bainliest
Step-by-step explanation:
witch number is composite 5,2,11,9
Answer:
9 is the composite number.
Step-by-step explanation:
A composite number is a positive integer that can be formed by multiplying two smaller positive integers.
Please I need help with this question
Answer:
10.44 feet
Step-by-step explanation:
You need to use the Pythagorean Theorem twice.
First we have to find the diagonal for the base.
6²+8²=x²
36+64=x²
100=x²
√100=x
x=10
Now we can find d.
10²+3²=x²
100+9=x²
109=x²
√109=x
x=10.44 feet
i need help!!!!!!!!......
Answer:
x² / z²
Step-by-step explanation:
i factored each expression and when it came to division, I multiplied by the reciprocal
[x(y + z) / z(x - z)] · [y(x - z) / z(x + y)] · [x(x + y) / y(y + z)]
re-write the above in a horizontal fraction form and it will be easier to follow
1. Find the area of the composite figure.
6 m
8 m
10 m
Answer:
Answer:
480 u have to multiply
Step-by-step explanation:
Which of these equations are true when the value of y is 27?
I. −9 + y = 18
II. −18 + y = −45
III. 5y = 135
IV. 2y = 29
Answer:
I. -9 + y = 18
Step-by-step explanation:
Double-check to see if I was correct
The equations I. and III. satisfies the condition when y = 27
What is an Equation?
Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
The value of y = 27
So , substituting the value of y in all of the given equations , we get
I.
-9 + y = 18
when y = 27
Substituting the value of y , we get
-9 + 27 = 18
18 = 18
So , I. satisfies the condition and the equation is TRUE
II.
-18 + y = 45
when y = 27
Substituting the value of y , we get
-18 + 27 = 45
9 ≠ 45
So , II. does not satisfy the condition and the equation is FALSE
III.
5y = 135
when y = 27
Substituting the value of y , we get
5 x 27 = 135
135 = 135
So , III. satisfies the condition and the equation is TRUE
IV.
2y = 49
when y = 27
Substituting the value of y , we get
2 x 27 = 29
54 ≠ 29
So , IV. does not satisfy the condition and the equation is FALSE
Hence , the equations I. and III. are TRUE
To learn more about equations click :
https://brainly.com/question/10413253
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PLEASE ANSWER ASASP FOR BRAINLEST!!!!!!!!!!!!!!
Answer:
I think 9
Step-by-step explanation:
Answer:
I am probably wrong because I don't remember this but it might be 9 or 19
Step-by-step explanation:
4+2+2+1=9=9+9=18
what does math means
Answer:
It means mathematics.
Lamoo thats wht it said in go-ogle
Step-by-step explanation:
Enter an equality that matches the number line model. Use x as your variable.
Answer
x < - 3
Explanation
X is a number less than 3
which one is it please help!
1
A line has a slope of -1/2and a y-intercept of -2.
Answer:
Step-by-step explanation:
y + 2= -1/2(x - 0)
y + 2 = -1/2x + 0
y = -1/2x - 2
-1/2x = -2
x = 4
what information is necessary to prove the triangles congruent by ASA? by AAS ? show your work please.
Answer:
See Explanation
Step-by-step explanation:
For ASA
[tex] \angle R \cong \angle E[/tex]
[tex] RQ \cong EF[/tex]
[tex] \angle Q \cong \angle F[/tex]
[tex] \triangle PRQ \cong \triangle GEF[/tex]
For AAS
[tex] \angle P \cong \angle G[/tex]
[tex] \angle R \cong \angle E[/tex]
[tex] RQ \cong EF[/tex]
[tex] \triangle PRQ \cong \triangle GEF[/tex]
Angle A and B are supplementary. If m∠A = 143°, find m∠B.
On the first day of
December it snowed 234
inches. The second day it
snowed 1/2 inches, and the
third day it snowed 38 of
an inch What was the
total amount of snow fall
over the first three days
of December?
Challenge: What was the
average snowfall over the
three days?
272.5 inches of snow.
Please give me genuine answers for this! It’s Math!
Simplify:
5(y + 1) + 5(y – 1)
Answer:
10y
Step-by-step explanation:
3. Two coins are simultaneously tossed until one of them comes up a head and the other a tail. The first coin comes up a head with probability p and the second with probability q. All tosses are assumed independent. (a) Find the PMF, the expected value, and the variance of the number of tosses. (b) What is the probability that the last toss of the first coin is a head
Answer:
Step-by-step explanation:
From above-given information
Consider p to be the probability that the first coin comes up as head
Consider q to be the probability that the second coin comes up as tail.
Provided all tosses seems to be independent.
Then;
Let X represent no. of tosses, where X follows a geometric distribution with parameter;
p' = p(1-q) +q(1-p)
with probability mass function (pmf)
[tex]P(X = x) = ( 1 - p')^{x - 1} p'[/tex]
Thus, the mean (expected value) and the standard deviation can be computed as:
[tex]E(X) = \dfrac{1}{p'}[/tex]
[tex]\mathbf{E(X) = \dfrac{1}{p(1-q)+q(1-p)}}[/tex]
[tex]V(X) = \dfrac{1-p'}{(p')^2}[/tex]
[tex]\mathbf{V(X) = \dfrac{1-[p(1-q)+q(1-p)]}{[p(1-q)+q(1-p)]^2}}[/tex]
(b)
Suppose X represents that the first coin is head;
and Y represent the last toss
Therefore, the required probability is:
[tex]P(X|Y) = \dfrac{p(1-q)}{p'}[/tex]
[tex]P(X|Y) = \dfrac{p(1-q)}{p(1-q)+(1-p)q}[/tex]
Translate each of the following English statements into logical expressions. The domain is the set of all real numbers. (a) There are two numbers whose ratio is less than 1. (b) The reciprocal of every positive number is also positive. (c) There are two numbers whose sum is equal to their product. (d) The ratio of every two positive numbers is also positive.
Step-by-step explanations:
Since the domain is a set of all real numbers, all the expression are with respect to real numbers.
a. 3 x,y : x/y < 1 ∧ y/x < 1
b. ∀x > 0, 1/x > 0
c. 3 x,y : x + y = xy
d. ∀x > 0 ∧ y > 0, x/y > 0 ∧ y/x > 0.
3 means "there exists"
∀ means "for every value of"
∧ means "and"
How were some European Jews able to come to Georgia in the 1930s? Check all that apply.
The US government loosened its restrictions on Jewish immigration.
Officials in the Georgia state government sponsored most immigrants.
Jewish immigrants tried to help family members back in Europe escape.
Private organizations helped Jewish children and teenagers find homes.
American citizens legally agreed to be responsible for Jewish immigrants.
Jewish American activists worked to bring immigrants to the United States.
Answer:
1 2 and 4
Step-by-step explanation:
Answer:
3,4,5,&6
Step-by-step explanation:
what is surface area of
Answer:
27.199918 cm2
Step-by-step explanation:
Hope this helps
Find the missing angle I think...
Answer:
Step-by-step explanation:
Since this is a test/homework, I'll give you a hint.
A triangle always is 180 degrees. If you add up all the sides, it should be 180.
A horizontal line is 180, if you add up the two sides (or the "line" that is crossing through the horizontal one) it'll be 180.
Just think of it like this: 180 is king. No matter what you add together, if its not 180, its wrong.
Hope this helps!
Find the surface area of the square pyramid (above) using its net (below)
Answer:
7 votos
Answer:12Step-by-step explanation:For each of the four triangles you multiply the base (2) by the height (2) and then divide it by 2 which equals 2.
What integer does Point B represent?
B
D
0
Point B
Answer:
-4
Step-by-step explanation:
uts -4 I mean I don't have any explanation but yea. Tell me if it's wrong
.
Find the slope of the line y=-5/7x-1
Answer:
-5/7
Step-by-step explanation:
With the equation y = mx + b, m is the slope of the line.
Since the equation is y = -5/7x - 1, m is -5/7
So, the slope of the line is -5/7
Answer:
m = -5/7
slope = -5/7
Step-by-step explanation:
Use y = mx + b to find the slope m.
Convert 1/4% to ratio
Answer:
1 : 4
Step-by-step explanation:
Easy
5
If 3x + 5y = 15 and x – 2y = 10, what is the value of 2x
+7y?
Answer:
5
Step-by-step explanation:
dont really understand why you answered your own question?