Select all the equations that have x=4 as the solution *
A 42 = 38 + x
B x + 15 = 19
C 18 = x - 2
D 32 = 36 - x
E 52 - x = 46
Answer:
A B D
Step-by-step explanation:
A 38+4=42
B 4+15=19
C 18= 20-2
D 32= 36-4
E 52-6=46
Factor the quadratic expression completely.
2x2 + 7x + 3
Answer:
(2x+1)(x+3)
Step-by-step explanation:
just remember to put a ^ when you do this 2x2 put it like this 2x^2
an you welcome and plz give me brainiest
Monica needs to increase her savings by 20%. If she has $85 already in her savings account, how much does she need to add?
What do these stand for
Answer:
Time and seconds
Step-by-step explanation:
I know its time and seconds because I go to school
Answer:
v(m/s) means velocity in meters per second and t(s) means time in seconds
~Please ~ help ~ me ~ out ~ I ~ don't ~ understand ~ the ~ question ~ and ~ if ~ you ~ can ~ explain ~ it ~ please ~ explain ~ .~ ヽ(´ ~ `)/♡
A circular garden has a radius of 8 feet. What is the circumference of the garden?
I think its C, cause I said so.
Alex started reading her book for 2 hours and 35 minutes one day and finished by reading 1 hour 52 minutes the next day. how long did it take her to read the entire book?
Answer:
4hour and 27 minute to finsh the entire book
Step-by-step explanation:
A rectangular picture frame has side lengths of 12 in by 9.5 in what is the length of the diagonal of the picture
Answer:
Length of diagonal of picture = 15.30 inches
Step-by-step explanation:
Given that:
Side lengths of picture frame = 12 inches by 9.5 inches
As the picture is rectangular, the diagonal will form hypotenuse of right angled triangle.
Using Pythagorean theorem;
a²+b²=c²
Putting the values in the theorem
[tex](12)^2 + (9.5)^2 = c^2 \\144+90.25=c^2\\c^2 = 234.25[/tex]
Taking square root on both sides
[tex]\sqrt{c^2}=\sqrt{234.25}\\c=15.30[/tex]
Hence,
Length of diagonal of picture = 15.30 inches
PLEASE HELP! YOU WILL GET 10 BRAINLIST!! PLEASE SHOW ALL OF YOUR WORK/HOW YOU GOT THE ANSWER
-2(y+4)-2y >8
Answer:
-2(y+4)-2y >8
-2y-8-2y>8
-4y-8>8
-4y<8+8
When you move a number on the other side it changes the side then > will become <
-4y<16
-4y/-4<16/-4
y<-4
Mrs.Anderson writes a check for 10.50 to each of her four nieces. What will be the total change in Mrs.Andersons checking account balance after all four checks are cashed?
Answer:
-42
Step-by-step explanation:
Since she is handing them equally to her four nieces, then she has to do 10.50 x 4
= 42 since they are asking how much checks were cashed, the answer will be negative so therefore the answer is $-42
One pipe can fill a tank in four hours; another pipe can fill the same tank in three hours. How long would it take to fill the tank if both pipes filled it at the same time? [?] hours Enter the number that belongs in the green box. Enter
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Answer:
[tex]\dfrac{12}{7}[/tex]
Step-by-step explanation:
The first pipe fills 1/4 of the tank in 1 hour. The second pipe fills 1/3 of the tank in 1 hour. So, in 1 hour, the amount of the tank that is filled is ...
[tex]\dfrac{1}{4}+\dfrac{1}{3}=\dfrac{3}{12}+\dfrac{4}{12}=\dfrac{7}{12}\quad\text{of the tank in 1 hour}[/tex]
This number is the fill rate in tanks per hour. We want the reciprocal of that, the fill time in hours per tank. The reciprocal of 7/12 is 12/7.
It will take 12/7 hours to fill the tank.
_____
Comment on the answer
It looks like you may be asked to fill two "green boxes" to provide the complete answer. The box shown as green in this question is the numerator of the fraction, so should be filled with 12. (We expect that the denominator entry will be made available as soon as you enter the numerator. Your experience with this web site will tell you if that is true.)
Gary had 30 dollars to spend on 3 gifts. He spent 9 1 4 dollars on gift A and 6 4 5 dollars on gift B. How much money did he have left for gift C?
Answer:
$13.95
Step-by-step explanation:
Total Amount to spend on gifts = $30
Number of gifts to purchase = 3
Amount spent on gift A = $9 1/4
Amount spent on gift B = $6 4/5
Amount left to spend on gift C:
Total amount - (gift A + gift B)
$30 - ($9 1/4 + 6 4/5)
$30 - (37/4 + 34/5)
$30 - (185 - 136) / 20
$30 - 321 / 20
30 - 16.05
$13.95
Write the equation of a line parallel to the line y = 2x that passes through 0,4
Note: this answer assumes that the question accepts the equation to be written in slope-intercept form.
Answer:
y = 2x + 4
Step-by-step explanation:
To write an equation of a line knowing a slope and a y-intercept, you can use slope-intercept form, or y = mx+ b.
1) Lines that are parallel to each other have the same slope. The answer needs to be parallel to the line y = 2x, so whatever the slope of that equation is must be the slope of the answer, too.
y is isolated in y = 2x, meaning it is in slope-intercept form, or y = mx +b form. The m in y = mx + b represents the slope of the line. In the equation y = 2x, the 2 is in the place of that m - meaning that 2 is the slope of that line, and therefore the slope of the answer, too.
2) The question also says that (0,4) is a point the line must pass through as well. However, notice that the x-value of the point is 0, meaning it is positioned on the y-intercept. Therefore, (0,4) must be the y-intercept of the equation.
3) To write a linear equation with y = mx + b form, you need to replace the m and the b for real values. The slope is 2, and m represents the slope - so write 2 in place of the m. The b represents the y-value of the y-intercept point - knowing that point is (0,4), write 4 in place of the b. Therefore, the answer would be y = 2x + 4 (assuming the question can be written in slope-intercept form).
12. The original price of a stove was $480. Its price has since increased by $30. The stove is
currently on sale for 10% off. What is the sale price for the stove?
A $459
B. $462
C. $472
D. $500
Answer:
A. $459
Step-by-step explanation:
I need help with geometry
Answer:
ASA congruency and corresponding sides of congruent triangles are congruent
Step-by-step explanation:
What is the equation of the line represented by the data in the table
Answer: y = -1/2x - 1
1. Please explain how/why you chose your answer.
Which equation is equivalent to 4x - 3y = 12?
please help asap!
Answer: -4/3x +4=y
Step-by-step explanation:
y=mx+b
PLS HELP ILL GIVE BRAINLIEST PLS PLS PLS EXPLAIN UR ANSWER
Answer:
the answer is C
Step-by-step explanation:
i Dont know the step by step explanation because im not smart
but the answer is C
Which of the following is equal to the product of 32 and 1/4 ?
Hey there!
The answer to your question is 8
In math, the "product of" represents multiplication, so we multiply the 2 numbers.
32 x 1/4 = 8
Hope this helps! Good luck, and have a great day!
Maria and her friends ordered a pizza that cost $14.70. She paid $2.94 for her part. What percent of the total bill did she pay?
Answer:
14.70-2.94 = 11.76
11.76/14.70 = 0.8
0.8 X 100 = 80
100 - 80 = 20%
Carrie is making a temporary ramp from the ground to the top of his patio so that he can roll a cart up to it to move furniture in. The surface of the patio is 3‘9“ above the ground and Gary wants the ramp to have a slope of no more than 0.375. What is the shortest horizontal distance he can have from the base of the patio to the base of the ramp
9514 1404 393
Answer:
10 ft
Step-by-step explanation:
The slope is rise/run. Using Gary's numbers, we have ...
m = rise/run
0.375 ≥ (3.75 ft)/run
run ≥ (3.75 ft)/0.375
run ≥ 10 ft
The shortest horizontal distance to the base of the ramp is 10 feet.
Which graph represents the function r(x) = |x – 2| - 1
Answer:you diddnt attach a graph but it woul have a stating pooint of positive 3 and a slove of up one over 1 so 1/1 +3
Step-by-step explanation:
A = Pert
A small forest has 30 rabbits and grows continuously
at a rate of 60%. How many rabbits do you expect to
see in this forest after 5 years? Round your answer to
the nearest whole rabbit.
PLZZZZZZZZ HELP ASAP ND THANK YOU
========================================================
Work Shown:
P = 30 = initial populatione = 2.71828 = a constant (similar to pi = 3.14)r = 0.60 = growth rate in decimal formt = 5 = number of yearsApplying those values gets us the following
A = P*e^(r*t)
A = 30*2.71828^(0.60*5)
A = 602.56489
A = 603
After five years, there are approximately 603 rabbits in that forest.
a candy shop contains a total of 300 items there are 125 chocolates 97 cookies and T number of truffles write an equation that represents the situation
Given:
A candy shop contains a total of 300 items.
There are 125 chocolates 97 cookies and T number of truffles.
To find:
The equation for the given situation.
Solution:
We have,
Number of chocolates = 125
Number of cookies = 97
Number of truffles = T
Total items = [tex]125+97+T[/tex]
A candy shop contains a total of 300 items. So,
[tex]125+97+T=300[/tex]
Therefore, the required equation for the given situation is [tex]125+97+T=300[/tex].
9/4 divided by 3/8 what the answer?
Answer:
6
Step-by-step explanation:
express the ratio in its simplest form 12cm to the 2nd power :3m to the 2nd power
Answer:
16:1
plz brainliestt
Step-by-step explanation:
144 : 9
Answer:
16:1
Step-by-step explanation:
There are 4 cups in a row from left to right. The green cup is somewhere between the yellow and blue cups. The red cup is somewhere left of the yellow cup. Based on that information, how many different arrangements of these cups could there be?
Answer:
Le answer tis 4 UwU
Step-by-step explanation: G'day mate!
P.S- Brainlest plzz??
Answer:
5
Step-by-step explanation:
e
Can someone help me with these answers please
Answer:
7. 7x
8. -2v+19
9. 8p-26
10. 14y-5
11. 7m-13
12. -8k+25
13. -3w-13
14. -9c+27
15. m+4n
16.-7s
17. 6x-13y-24
18. 6h-16b
19. -9p+9q+12
20. 2k/5+ 31/4
Step-by-step explanation:
The admission fee at a small fair is $1.50 for children and $4.00 for adults. On a certain day, 2,200 people enter the fair and $5,050 is collected. How many children and how many adults attended?
Given :
The admission fee at a small fair is $1.50 for children and $4.00 for adults.
On a certain day, 2,200 people enter the fair and $5,050 is collected.
To Find :
How many children and how many adults attended.
Solution :
Let, number of children and adults attended are c and a.
So, c + a = 2200 ....1)
Now, fair collected is given by :
1.5c + 4a = 5050 ....2)
Putting value of a from equation 1) to 2), we get :
1.5c + 4( 2200 - c ) = 5050
1.5c - 4c = 5050 - 8800
2.5c = 3750
c = 1500
a = 2200 - 1500
a = 700
Therefore, 1500 children and 700 adults attended the fair.
a dolphin swam 12 miles in 4 hours. what was its average speed in miles per hour (mph) ?
Answer choices : A. 2 mph
B . 4 mph
C. 3 mph
D. 7 mph
PLEASE HELLPPP :(
Can someone pleasee help or explain to me how u do this? I don’t really Understand ?