Answer: x = 4 y=-9
Step-by-step explanation:
Answer:
x = 4
y = -9
Step-by-step explanation:
Isolate a variable from one of the equations ( I chose the first equations cuz it's easy): 6x + y = 15 will be y = 15 - 6x
Substitute the above equation in the place of y in the second equations:
-7x -2(15 - 6x) = -10
-7x -30 + 12x = -10
-30 + 5x = -10
5x = 20
x = 4
To find y-value, substitute the x-value gotten in any equation:
y = 15 - 6(4)
y = 15 - 24
y = -9
Hope this helps!
Use properties of rational numbers to multiply the following.
Answer:
D. -93/20
Step-by-step explanation:
-6/5 is -1.2 in decimal form so then you multiply -1.2 by 3.875 and get -4.65, convert that into a fraction and get -93/20.
Determine whether each sample may be biased. Explain.
5. Rickie surveys people at an amusement park to find out the average size of people's immediate family
6. Theo surveys every fourth person entering a grocery store to find out the average number of pets in people's homes.
7. A biologist estimates that there are 1,800 fish in a quarry. To test this estimate, a student caught 150 fish from the quarry, tagged them, and released them. A few days later, the student caught 50 fish and noted that 4 were tagged. Determine whether the biologist's estimate is likely to be accurate.
NO FILES OR I REPORT grr >:-(
Answer:
7
Step-by-step explanation:
in 5 and 6 there are few flaws in their experiment, so there is no way to disprove the information they find. However in 7, the biologist can't prove that having 4 tagged fish out of 50 means there are 1,800 fish in that quarry. Therefore it is inaccurate and biased.
Someone please help me
Answer:
2
Step-by-step explanation:
They are 2 units apart from each other
please help, i give brainliest.
Answer:
128.74
Step-by-step explanation:
.8x = 120.00
.87x = 112.00
This represents an easier way to do the problem if there is 20% off that means you are paying 80% of the original cost. You are paying 87% if it is 13% off.
To find the price at nine-irons divide 112 by .87
20% of 120 is 24
120 - 24 = 96
96 - 8 = 88
13% of 100 is 13
100 - 13 = 87
Sorry I don't understand this one
Please Help! *Middle school math* Please provide answer and explanation. A pack of cards contain 52 cards. How many cards are in 12 packs?
Answer:
624 cards
Step-by-step explanation: 52 x 12 = 624
Answer:
624
Step-by-step explanation:
52 x 12 = 624
I'm not so sure on this one, any thoughts?
3 Answers:
Choice B) As x decreases, y decreasesChoice C) As x increases, y approaches 0Choice F) The function is an increasing function=====================================================
Explanation:
The graph has a negative y-intercept. So for example, we could have a y intercept of (0,-1) or (0,-2). The x value is always 0, and in this case, the y coordinate is some negative number.
Due to the negative y intercept, this means the function curve is below the x axis at this point. The common ratio r, such that 0 < r < 1, tells us that the exponential function is decreasing in absolute value. Let's say the y intercept was (0,-10) and the common ratio was r = 0.5
The common ratio of r = 0.5 means the second term is r*(first term) = 0.5*(-10) = -5, and the third term is r*(second term) = 0.5*(-5) = -2.5
The terms: -10, -5, -2.5 show us that they are decreasing in absolute value, but in terms of a graph, they are going upward toward zero.
So that's why as x increases, so does y (which makes it an increasing function). And y is approaching y = 0. However, it never actually gets to y = 0.
On the flip side, if x is decreasing, then y is also decreasing. Both x and y increase or decrease together in any increasing function. A decreasing function would have x increase while y decreases, or vice versa, meaning they go in opposite directions.
Answer:
B,C, and F or 1, 2, and 6
Step-by-step explanation:
2t - 3 = 1 (solve for t)
we're doing two step equations
Answer: t = 2
Step-by-step explanation:
2t - 3 = 1
(add 3 to both sides)
2t = 1 + 3
2t = 4
(divide 2 from both sides)
t = 2
Please please please help me I’m in honors math so our teacher makes us show our work
Answer:
You didn't put the question
Step-by-step explanation:
(will edit when the question is fixed)
Answer:
what is the question?
Step-by-step explanation:
Ariana's grandfather made a scaled down model of a knitting needle to be placed inside a dollhouse. Arianna measured the model below. If every 0.5 inch of the scaled down model equates to 3.5 inches of the actual needle, what is the length of the actual needle?
10.5
15
12
9.5
Answer:
10.5
Step-by-step explanation:
1.5 inches
.5 and 1.5 =3
3x3.5=10.5
No links i rlly need help
Answer:
The answer is B.
Step-by-step explanation:
It's the only equation that fits the information in the table.
On a certain hot summer's day,432 people used the public swimming pool. The daily prices are $1.50 for children and $2.00 for adults. The receipts for admission totaled 664.50How many children and how many adults swam at the public pool that day?
Answer:
399 children, 33 adults
Step-by-step explanation:
Children = c
Adults = a
c + a = 432
a = 432 - c
1.5c + 2a = 664.50
1.5c + 864 - 2c = 664.50
-.5c + 864 = 664.50
-.5c = -199.5
.5c = 199.5
c = 399
432 - 399 = 33
a = 33
Answer:
kids = 399
adults = 33
Step-by-step explanation:
Please Help Me ASAP
The table shows the pricing for four different brands of cat food.
Which brand costs the least per once?
A)
B)
C)
D)
Answer:
That'll be C let me know if im wrong <3
Two numerical patterns are shown below:
Pattern A: 6, 12, 18, 24, 30
Pattern B: 12, 24, 36, 48, 60
Select the statement that describes the numerical patterns.
The rule for Pattern B is "multiply by 2."
The rule for Pattern A is "multiply by 2."
Each term in Pattern B is one half the corresponding term in Pattern A.
Each term in Pattern A is one half the corresponding term in Pattern B.
Answer:
Each term in Pattern A is one half the corresponding term in Pattern B.
Step-by-step explanation:
6 is half of 12 , 12 half 24, 18 half of 36, 24 half of 48 , 30 half of 60 etc.
Answer:
46347
Step-by-step explanation:
sorry
Solve the x ['-']
48>−6x
Answer:
x = -9, -10, -12...
essentially anything less than negative 8
Step-by-step explanation:
48>-6x
-8>x
Laura went to a golf shop that has a golf simulator. The simulator estimates the distance that each ball she hits would have gone. She hit five balls each with her 2, 3, 4, 5, 6, 7, 8, and 9 irons. The distances of her golf shots are given in the table. Keep this table window open as you work on the tasks in this activity.
When Laura graphed the data, she got this scatter plot and drew a line of best fit. Keep the scatter plot window open as you work on the tasks in this activity.
When her brother graphed the data, he got a different scatter plot and drew a line of best fit. Keep the scatter plot window open as you work on the tasks in this activity.
Part A
Whose scatter plot matches the data, and what is wrong with the incorrect scatter plot?
Part B
Using the correct graph, describe the association shown
Part C
What is the slope of the line in the correct graph? What is the slope of the line in the incorrect graph? Are the slopes the same or different?
Part D
What is the y-intercept of the correct graph? What is the y-intercept of the incorrect graph? Are the y-intercepts the same?
Part E
If Laura were able to find a 0 iron, about how far could she hit it?
Part F
About what is the average change in distance for each increase of 1 in the iron number? What does this mean in terms of the situation?
Answer:
I can only help you with Part C and E as these two are the ones I am able to answer.
Part C: slopes are not the same
Part E: 195 yards
Step-by-step explanation:
Part C:
Part E: The slope of the line follows a linear pattern; therefore, find the equation for the line by calculating the slope and plugging in a point.
Slope:
y2-y1/x2-x1; (9, 105) (8,115)
(115-105)/(8-9) = -10; the slope is -10, now solve for the equation of the line.
y=mx+b; plug in the point (9,105)
105 = -10(9) +b
105 = -90 +b, add 90 to both sides
195 = b; rewrite the equation;
y=-10x+195; x stands for the iron, plug in 0 for x;
y=-10(0)+195
y=195 yards.
Answer:
A The scatter plot that matched the data is the second scatter plot while the first scatter plot wrongly represents the data because values of the Iron not present in the data is also represented in the scatter plot and also some values present in the data table is also missing in the First scatter plot.
B The scatter plot describes the strong negative association because in the scatter plot strong downhill linear relationship.
C In mathematics the slope or gradient of a line is a number that describes both the direction and the steepness of the line. Slope is denoted by the letter m in the equation of a straight line "y = mx + c".
D 195 yards
F im unsure of F i am sorry.
Step-by-step explanation:
PLS HELP GIVING BRIANLIEST
Answer:
220 yards or A
Step-by-step explanation:
2*60=120
15*1760=26400
26400÷120=220
Which expression makes the equation true for all values of x?
16x - 16 = 4( ? )
A 4x - 4
B 4x - 16
C 2x - 2
D 12x - 12
Answer:
A since if we multiply 4 × 4x, we get 16x, and 4 × 4, we get 16, which cancels with the other 16x - 16 on the left side. That makes sure that any x we choose will cancel out in the end.
Step-by-step explanation:
1. 16x - 16 = 4(4x-4)
2. 16x - 16 = 16x - 16
3. 0 = 0
helppppp ill give 10 points
Answer:
c
Step-by-step explanation:
Help me answer these 2 questions!!!!!
Answer:
B & B.
Step-by-step explanation:
1.
[tex] \frac{x}{8} \geqslant - 1.5[/tex]
[tex] \frac{x}{8} \times 8 \geqslant - 1.5 \times 8[/tex]
[tex]x \geqslant - 12[/tex]
2.
[tex]16 > - 8 + x[/tex]
[tex]16 + 8 > x - 8 + 8[/tex]
[tex]x < 24[/tex]
Solve for X
x + 4.6 = 12.96
Answer:
x = 8.36
Step-by-step explanation:
First, subtract 4.6 from both sides of the equation, then just simplify.
Answer: x = 8.36
(same thing as 209/25)
Step-by-step explanation:
Move the constant to the right hand side and change its sign.
x = 12.96 - 4.6
Subtract the numbers.
x = 8.36
The following table shows the number of raisins in a scoop of a variety of brands of Raisin Bran cereal. Find the mean absolute deviation (MAD) of the data set
Answer:
The mad is two
Step-by-step explanation:
helppppppppppppppppppppppppppppppppppppppppp
Answer:
D 90%
Step-by-step explanation:
Help plzz and dont give me a file to look at and I would like the correct answer
Answer:
70+(8x+30)=180
-70 -70
8x+30=110
-30 -30
8x=80
x=10
Step-by-step explanation:
hope that helped! have a great day or night :)
Yo someone hellp me and if you see this please click!
Answer:
3/4
Step-by-step explanation:
Answer: 3/4
Step-by-step explanation:
In decimal form, 2/5 is .4
In decimal form, 7/8 is .875.
In decimal form, 3/4 is .75.
In decimal form, 15/16 is .9375.
In decimal form, 1/3 is .3333.
In decimal form, 3/8 is .375.
3/4 is the only one in between.
HELP ME I was out of school when we learned this from a concussion and broken arm
Answer:
2 flavors and 4 toppings
Step-by-step explanation:
For there to be 8 possible ways, you need to have inputs that can equal that. 4×2 is 8
The table shows home runs for 2 baseball players over 5 games. Which statement is true?
Answer:
henry statement is true
Step-by-step explanation:
Use order of operations to evaluate the expression.
12 x (3 + 4) ÷ 2 - 10
Answer:
32
Step-by-step explanation:
Here's the order of what to solve:
Parenthesis
Exponents
Multiply
Divide
Add
Subtract
12 x (3 + 4) ÷ 2 - 10
12 x 7 ÷ 2 - 10
12 x 7 ÷ 2 - 10
84 ÷ 2 - 10
84 ÷ 2 - 10
42 - 10
42 - 10
= 32
Answer:
Step-by-step explanation:
Add: 3 + 4 = 7
Multiple: 12 * the result of step No. 1 = 12 * 7 = 84
Divide: the result of step No. 2 : 2 = 84 : 2 = 42
Subtract: the result of step No. 3 - 10 = 42 - 10 = 32
8x^2 + 25y
y = 2
x = 3
Answer: 122
Step-by-step explanation:
Solving the equation...
Substitute the values of x and y...
8(3^2) + 25(2)
= 122
Answer:
122
Step-by-step explanation:
8x^2+25y
8(3)^2 +25(2
72+ 50 =122
Please help me on this question
Answer:
The answer is A. Quadratic function
Step-by-step explanation:
Answer:
your correct answer is A
Step-by-step explanation:
6.) A completely full spherical hot air balloon with a radius of 9 meters is being deflated at a rate of 22 cubic meters per minute. How much time must elapse for the balloon to be completely deflated? Use the volume formula and 3.14 for π .
Find the volume of the full hot air balloon.
7.) Calculate the time it takes to completely deflate the balloon using the constant rate of deflation. Set up and solve a proportion.
Answer:
ou need to make permanent healthy changes to your diet and get ... At this time, the cost for placing and removing the intragastric balloon may ... If the balloon deflates, there's also a risk that it could move through your digestive system. ... An intragastric balloon can make you feel more full faster than you
Step-by-step explanation: