Answer:
c
Step-by-step explanation:
_6x -9y =15
_6x÷3=-2x
9y÷3=3y
15÷3=5
so,_2x -3y =5
At the beginning of a trip, the tank of Diana’s car was filled with gasoline to half of its capacity. During the trip, Diana used 30 percent of the gasoline in the tank.
At the end of the trip, Diana added 8 gallons of gasoline to the tank.
Let the capacity of the tank of Diana’s car be x gallons. Write an expression representing the number of gallons of gasoline in the tank after Diana added gasoline to the tank at the end of the trip? Enter an expression in the simplified form.
Capacity of tank be x
At end of journey the tank was half filled.
Hence x/2 filledNow used percentage is 30%
[tex]\\ \sf\longmapsto \dfrac{30x}{200}[/tex]
[tex]\\ \sf\longmapsto \dfrac{3}{20}x[/tex]
Now
added gasoline=8gallonExpression:-
[tex]\\ \sf\longmapsto \dfrac{3}{20}x+8[/tex]
What is the range of the given function?
Answer:
The range of a function is the complete set of all possible resulting values of the dependent variable (y, usually), after we have substituted the domain. .The range is the resulting y-values we get after substituting all the possible x-values.
Step-by-step explanation:
A shopkeeper bought 24 bottles of fruit juice for $63 dollars.
She sold them for $2.95 each.
Calculate her percentage profit or loss.
Answer:
0.325
Step-by-step explanation:
$63 divide by 24 you'll get 2.625
then $2.95 minus 2.625 you'll get 0.325
-8 Find the slope of the line y = -8/2x+1/5 Simplify your answer and write it as a proper fraction, improper fraction, or integer.
The slope is -4.
Because:
-8/2 is -4, which is the slope.
Can someone help me with this? Last one is -1/4 btw
y=-1/2x+5/2 Find the slope
Answer:
Here is a pic hope this helps! <3
Step-by-step explanation:
Answer:
-1/2
Step-by-step explanation:
y=-1/2x+5/2
y=mx+b
m=slope
m=-1/2
Solve:
3.7x + 1.2 = 5.4x - 6.3
Crystal's yearly income is $25,000, and the cost
of her rent for the year is $7,500. What fraction
of her yearly income does she spend on rent?
A. 1/4
B. 3/10
C. 2/5
D. 2/7
factor the expression 14x - 21 using the GCF
Factorize (x-y)^2+(x-y)
..............answer..
A leaking tap wastes 3,750 ml of water in 1 hour how much water will be wasted in a day??
Answer:
90,000
Step-by-step explanation:
3750ml/hr *24 hrs
Therefore, A leaking tap will waste 90000 ml in a day.
Hoped this helped
[tex]BrainiacUser1357[/tex]
$800 at 9% per year for 1 year
Answer:
The answer should be 72.
Step-by-step explanation:
You're finding the interest earned. I = Prt, I for simple interest, P for principal, r for rate, and t for time.
Substitute p for $800, r for 9%, and t for is 1 year.
You would multiply these three numbers together.
$800(0.09)(1) should give you 72.
If 12g of a radioactive substance are present initially and 8yr later only 6g remain, how much if the substance will be present after 13 years?
The weight of substance remaining after 13 years is 2.25 g.
Given:
Present weight of substance = 12 g
After 8 years weight remains = 6 gm
Now, weight loss in 8 year will be,
12-6=6 gm
So, weight loss in 1 year will be,
[tex]\dfrac{6}{8} =\dfrac{3}{4}[/tex]
Total weight loss in 13 year will be,
[tex]\dfrac{3}{4}\times13=9.75[/tex]
The weight of substance remaining after 13 years will be,
[tex]12- 9.75 = 2.25 \;\rm g[/tex]
Therefore, the weight of substance remaining after 13 years is 2.25 g.
To know more about radioactive decay, refer to the link:
https://brainly.com/question/12116123
“write each number as a percent”
6 and 1/2 ( mix number)
Help please
Answer:
650%
Step-by-step explanation:
Since percent means "out of one hundred", we can use that to find out the answer6 would be 600 percent, and 0.5 would be 50 percentTherefore, the answer would be 650%
What is the height of the triangle?
17 units
34 units
51 units
68 units
Which congruence criteria is met in the following scenario
HL
AAS
SAS
ASA
SSS
Answer: SAS
Because there is a mark showing that one pair of sides are congruent, the stars showing that one pair of angles are congruent, then the triangles are sharing a line (which means that they are congruent)
Sarah is buying gifts for her friends. She is purchasing phone cases and chargers. The phone cases cost $25 and the charges cost $30. She
plans on spending no more than $100 and wants to buy at least 4 gifts. Which inequalities would be used to model this situation?
Answer:
Step-by-step explanation:
Let P be the number of phone cases and C the number of chargers.
p($25) + C($30) ≤ $100
and
P + C ≥ 4
check whether the given fraction are equivalent
a) 7 /13 ,5/11
Answer:
No
Step-by-step explanation:
Not equivalent
7/13 ≠ 5/11
HELP FAST (x+y+2)(y+1) REWRITE IN AN EQUATION
Answer:
xy+x+y^2+3y+2
Step-by-step explanation:
Write an equation in slope-intercept form for the line with slope 5 and y-intercept -2.
What is meant by a stratified sample?
Answer:
A stratified random sampling involves dividing the entire population into homogeneous groups called strata (plural for stratum). Random samples are then selected from each stratum. ... A random sample from each stratum is taken in a number proportional to the stratum's size when compared to the population.
Answer:
Sampling that is used to represent different groups depending on their different qualities.
Hope that helps. x
2) (x8y2)(x3y11)
a) xlly13
b) x24y22
c) xSy
d) 1
Answer:
the answer would be A.)
Step-by-step explanation:
HELP HURRY PLS
What is the equation of this line?
y =2/3x
y=3/2x
y= -2/3x
y= -3/2x
Answer:
y = 2/3x
Step-by-step explanation:
Which number is an integer? Negative three-fourths 0 2. 3 Pi.
The number that is an integer is 0.
An integer is a number that does not have fractions or decimals. Examples of integers are 50, - 1. A fraction is a number that is made up of numerators and denominators. An example is 3/4. A decimal is made up of tenths, hundredths and thousandths. An example is 2.3.
Negative three-fourths is not an integer because it is a fraction. 2.3 and pi is not an integer because it is a decimal.
A similar question was answered here: https://brainly.com/question/15984496
A line passes through the points (8, -1) and (-4, 2).
10
8
6
4
-10 -3 -6 6 -2
2
4
6
8
10
X
4
-6
do
8
-10
What is the y-intercept of this line?
Answer:
The y-intercept of this line is 1 (or (0, 1) )
Step-by-step explanation:
Going from (8, -1) to (-4, 2), the x-coordinate decreases by 12 and the y-coordinate increases by 3. Thus, the slope of this line is m = rise/run = 3/(-12), or m = -1/4.
Let's use this information (x = 8, y = -1, m = -1/4) and the slope-intercept formula y = mx + b to find the y-intercept (b):
-1 = (-1/4)(8) + b, which simplifies to -4 = -8 + 4b. Solving for b, we get
4 = 4b, so that b must be 1.
The y-intercept of this line is 1 (or (0, 1) )
The scale for an
airplane is 1 cm
for 15 feet. If the
plan is 9 cm
long, how long is
the actual plane?
Answer:
135 ft
Step-by-step explanation:
Each centimeter represents 15 feet, so 9 centimeters will represent ...
9 × 15 ft = 135 ft
The plane is 135 feet long.
What is 4/6 divided by 3/12 what is the quotient
Answer: 8/3, 2 2/3
Step-by-step explanation:
reciprocal of 3/12 is 12/3
soooooo
4/6 x 12/3
which is 48/18
u can divide that by 6
which is 8/3
or 2 2/3
Find the slope of each line.
1)
Answer:
7/1 or 7
Step-by-step explanation:
because you rise (vertically) seven and run (horizontally) 1, so 7/1 but simplified it's just 7 so either is valid.
Can someone please explain this to me
Answer:
The answer is 4
Step-by-step explanation:
because add 4 then divided by 4
GEOMETRY QUESTION NEED HELP ASAP 50 POINTS PLEASE PUT FULL ANSWER!!!! 2 part question find the answer to the one in the picture also find the measure of angle 7 also please