Answer:
-3
Step-by-step explanation:
Graph y = 2x and y= 2x
What x-values are solutions to the system?
Answer:
Wait u gave the same equation twice, do u mind checking back to it?
Step-by-step explanation:
Which of the following are roots of the polynomial function
Answer:
its a and b
Step-by-step explanation:
Represent 300 as an exact value in lowest form
0912
o 11/4
O
1073
0 65
Answer:
10√3
Step-by-step explanation:
Square the first number
100*3 is 300
100 is square root of 10
Which equation can be used to solve for r in the following diagram?
60°
V
(4x – 20)
Answer:
c.
Step-by-step explanation:
60= (4x - 20)
expl: vertically Opposite angles
What is the value of X?
Answer:
30
Step-by-step explanation:
Jayna used the distributive property to simplify the expression 4(a + 2) and got(4a + 2). Do you agree with Jayna?
Answer:
No
Step-by-step explanation:
I would not agree with Jayna because using the distributive property, you can get:
4(a + 2) = 4(a) + 4(2) = 4a + 8
Jayna did not get the right answer because she did not distribute the 4 to the 2 in a + 2 and she only multiplied a by 4.
Please help me its an easy question and please show steps (will give brainiest)
Which function is best represented by this graph?
A. y = 1/2x + 6
B. y = −2x + 3
C. y = 2x + 6
D. y = −1/2x + 3
Answer:
d
Step-by-step explanation:
not a bc it has to be negative
not c bc its has to be negative
not b bc the slope is -1/2
IT'S D
Answer:
D
Step-by-step explanation:
from the picture, we know that the slope is negative to begin, since the line is going on a downward direction from left to right. this eliminated A and C instantly.
Now we also can see the graph crossed at 3 for the y intercept, which is another reason to eliminate A and C.
we must then find the show of the line.
let us use to point (0,3) since this is the y intercept and (6,0) since this is the x intercept. to find the slope, m, at must use the equation
[tex]m = \frac{y2 - y1}{x2 - x1} [/tex]
so, let's label (0,3) as point 1 and (6,0) as point two. then,
x1 = 0
y1= 3
and
x2= 6
y2=0
Now we just plug in and simplify.
[tex] m = \frac{0 - 3}{6 - 0} = \frac{ - 3}{6} = - \frac{1}{2} [/tex]
we now have our slope and y intercept, so we can plug them into our equation
[tex]y = mx + b[/tex]
where m is the slope and b is the y intercept.
our equation is thus
[tex]y = - \frac{1}{2} x + 3[/tex]
so, the answer is D
The table shows the number of practice problems completed in 30 minutes in three samples of 10 randomly selected math students. Number of practice problems completed In 30 minutes
Sample 1 18 15 17 17 18 | 13 | 17 16 | 16 | 14 | 18 Mean = 16.2
Sample 2 21 20 18 20 19 19 20 21 21 20 Mean = 19.9
Sample 3 | 14 16 18 13 | 18 | 16 | 16 | 17 | 19 | 19 Mean = 16.6
Which statement is most accurate based on the data?
A. A prediction based on the data is reliable, because the means of samples 1 and 3 are very close together.
B. A prediction based on the data is not completely reliable, because the means of samples 1 and 3 are too close together.
C. A prediction based on the data is reliable because there are no noticeable differences among the samples
D. A prediction based on the data is not completely reliable because the meaning of sample 2 is noticeably higher than the means of the other two samples. : ))
Answer:
D
Step-by-step explanation: please give me brainlist Thanks!
Greg uses a triangular area of his back yard as a garden.If the area if his garden 1.248 square feet,whats the area of the garden?
Answer:
192 ft²
Step-by-step explanation:
Area of rectangular backyard = 1248 ft²
Width of backyard = 52 ft
Length = x
Area of rectangular backyard = Length * width
1248 = x * 52
x = 1248 / 52
x = 24 feets
Hence, x = height of triangular garden
Area of triangle = 1/2 base * height
Area = 1/2 * 16 * 24
Area = 192 ft²
What is the surface area of this composite solid?
Use 11.3 meters for the slant height of the triangular prism.
Enter your answer in the box.
__m²
Composite made up of a rectangular prism surmounted by a triangular prism. The rectangular prism has dimensions of 16 meters wide by 20 meters long by 12 meters high. The triangular prism has dimensions of 16 meters wide by 20 meters long with a triangular altitude of 8 meters high.
Answer:
1764 m²Step-by-step explanation:
Refer to attached picture.
All given dimensions are given on the picture (not to scale).
Since altitude of the triangle and slant height is given, we can find the base of the triangle using Pythagorean:
[tex]b/2 = \sqrt{11.3^2-8^2} = \sqrt{64} = 8m, \\b = 16 m[/tex]It has 9 faces and the total surface area is:
S = 16*20 + 2(20*12) + 2(20*11.3) + 2(16*12) + 2(1/2*8*16) = 1764 m²Isaac finished eight of the ten homework problems. Phil has finished of the homework. How many more problems did Isaac finish?
Answer:
-2
Step-by-step explanation:
If Issac has finished 8/10 problems in the homework, and Phil has completed all of it, it can be concluded that Phil completed 10/10. 10/10 would equal a whole, or in this case, the entire homework. If Issac completed 8 problems, and Phil completed 10, subtract both values to find that Issac completed -2 more problems than Phil.
*correct me if I'm wrong, or If I didn't fully understand your question, because I am a little confused with how much homework Phil has finished.
Someone please help will mark as brainliest
Answer:
A) [tex]\frac{3}{5}[/tex]
Step-by-step explanation:
The graph goes up 3, to the right 5 between the two points, making the slope [tex]\frac{3}{5}[/tex].
Someone please help 20 points!
please help me PLEASE
Answer:
The answers are A, B and C.
Step-by-step explanation:
To solve the inequality you first have to use Distributive Property. You should get -3k + (-21) > -57
Next Divide 21 on both sides. -57/21 is -36
You should have -3k > -57
Divide -3 on both sides. -57/-3 is 12
You should end up with k > 12
And you never used -5, 0 or 8 in the equation and the question asks to choose the following that isn't included in the solution so your answers are A, B and C.
Hope This Helps! ^^
a^-6 = I have no idea please help
Answer: [tex]\frac{1}{a^6}[/tex]
Step-by-step explanation:
When you want to solve something that has a negative exponent, turn it into a fraction.
a^-6
= [tex]\frac{1}{a^6}[/tex]
If you knew the value of a, you would solve it completely.
What is the value of 6n
2 when n =3?
Answer:
54
Step-by-step explanation:
6n²
= 6(3)²
= 6(9)
= 54
HELP!!!!! PLEASE AND THANK YOU
Answer:
The 3rd one is correct
(7.5 + 3) x 6 - 4)
Johnny took a math quiz last week. He got 9 problems correct and 11 problems incorrect. What percentage did Johnny get correct?
Answer:
The answer is 45%
Step-by-step explanation:
9+11=20
9/20
=4.5/10
=45/100
=45%
what is the area of a rectangle with sides of 4 inches by 8 inches
Answer:
32
Step-by-step explanation:
[tex]4 \times 8 = 32[/tex]
What should be done to these equations in order to solve a system of equations by elimination?
I- 3x + 2y = 16
12x + 5y = 21
Choose one correct answer:
Multiply the first equation by 2 and the second equation by 3.
Multiply the first equation by 3.
O Nothing needs to be done, since they both equal have 2's and 3's for coefficients.
O Multiply the first equation by
3 and the second equations by 2
Answer:
B is the correct answer
Step-by-step explanation:
Since it gets rid of the y so you could find the x and then work around to find the Y.
Answer:
Multiply the first equation by 3.
Step-by-step explanation:
Sally can paint a room in 9 hours while it takes Steve 5 hours to paint the same room. How long would it take them to paint the room if they worked together?
Answer: About 3 hours and 5 minutes to paint the room together.
Step-by-step explanation:
Sally can paint 1/5 of the room in an hour and Steve can paint 1/8 of the room in an hour.
Room/Hour
1/5 ± 1/8 =8/40
8/40+5/40=13/40
How long to paint the room?
13/40 x 1= 40/13
40÷13=3.0777
So the answer will be Sally and Steve can paint the room in about 3 hours and 5 minutes
I will give brainiest
Answer:(0, -3)
Step-by-step explanation:
cosine angle B (geometry, right triangles- giving brainliest and thanks to all!)
Answer:
10/6 is the answer
cosine=hypotenuse/opposite
Step-by-step explanation:
Shoes that normally cost $79.99 are on sale for
15% off. What is their sale price?
$79.99 - 15% = $67.9915
...........,..................................
write an equation represented by the graph shown !
Answer:
y = |x+1.5|
Step-by-step explanation:
Start with the graph of y = |x|. To shift it left by 1.5 units, replace x with x+1.5.
General rules for shifting graphs:
Shift y = f(x) up by a units: y = f(x) + aShift y = f(x) down by a units: y = f(x) - aShift y = f(x) left by a units: y = f(x + a)Shift y = f(x) right by a units: y = f(x - a)Answer:
y=abs(x+1.5)
Step-by-step explanation:
The lengths of two sides of a right triangle are given. Find the length of the third side. Round to the nearest tenth if necessary.
leg: 20 m; hypotenuse: 25 m
10.5 m
8.9 m
15 m
32 m
Answer:
the answer is third option
because, 20²+x²=25²
x²=625-400
x²=225
X=15mWhich of the following lists is in order from smallest to largest?
0.2, 0.05, 0.48, 0.6
0.2, 0.48, 0.05, 0.6
0.05, 0.2, 0.6, 0.48
0.05, 0.2, 0.48, 0.6
Answer:
0.05, 0.2, 0.6, 0.48 I think
Answer:
0.05,0.2.0.60,0.48
Step-by-step explanation:
hope it helps ... kinda confused betwweeen 0.6 and 0.48
HELP PLEASE!! VERY FAST!!
Answer:
the correct answer is option B. V only
Each table in a library can seat up to 5 people. There are enough tables for 75 people. How many tables are there in the library?
Answer:
15 tables
Step-by-step explanation:
75/5 = 15
Answer:
There are 15 tables in the library.
Step-by-step explanation:
You know this because you know the library holds 75 people and you know how many people can sit at a table so to find the answer you divide 75 by 5 and you get 15. To check this you can multiply 15 by 5 and you will get 75.
HELPPPPP FAST!!!
Find the volume, round your answer to the nearest tenth.
9 yd
7 yd
Answer:16
Step-by-step explanation:
16 x 7 = (10x7) + (6 x p)