Answer:
0
Step-by-step explanation:
Substitute x for -3 and y for -1:
= -2(-3) + 6(-1)
= 6 + -6 (or 6 - 6)
= 0
7. Use substitution. What is the solution
to the system of equations? Explain.
This is the question and equation please helpppppp
Luis can swim 1 ½ meters per second. How many meters can he swim in a minute? Show your work and state the answer.
Find x in the follow triangle.
Answer:
Fixed
x=5.66
Step-by-step explanation:
This is an around about way since it's not a right triangle.
lets call the segment line that bisects the lower right angle= M.
The two triangles created would be similar. So:
4/6=M/(x+3)
4x+12=6M
M=(4x+12)/6
and
(x+3)/(x+4)=M/6
(6x+18)=Mx+4M
M=(6x+18)/(x+4)
since M=M
(4x+12/6=(6x+18)/(x+4)
(x+4)(4x+12)=6(6x+18)
4x^2+12x+16x+48=36x+108
4x^2+28x+48=36x+108
4x^-12x-60=0
x^2-3x-15=0
Factor
(x+2.65)(x-5.66)=0
x=5.66
Solve for n:
3n + 2n - 17 = 38
(-6, -2) (4, -5) what is the distance in units, between the two points
Laura bought y yards of fabric on Saturday. The next day, she went back and bought 3 more yards than she did on Saturday. If each yard of fabric costs $5, write an expression in simplest form for the total amount of money she spent on both days.
Answer:
(y+3)*5
im pretty sure this is correct
The image of the point (6, 6) under a translation is (5,2). Find the coordinates of
the image of the point (0, 2) under the same translation.
9514 1404 393
Answer:
(-1, -2)
Step-by-step explanation:
The difference between the coordinates of the image and the coordinates of the original is the same for both points.
X - (0, 2) = (5, 2) -(6, 6)
X = (5, 2) -(6, 6) +(0, 2) = (5-6+0, 2-6+2)
X = (-1, -2)
The image of the point after translation is (-1, -2).
Let the random variable X be equally likely to assume any of the values 1/14, 1/7, or 3/14. Determine the mean and variance of X. The mean is Enter your answer; The mean is 1/7 [Give exact answer in form of fraction.] The variance is Enter your answer; The variance is 0.1190 [Round your answer to four decimal places (e.g. 98.7654).]
Answer:
1/7 ;
0.0034
Step-by-step explanation:
Given that:
X = 1/14, 1/7, 3/14
n = number of observations = 3
Since, probability of X is equally likely ;
P(X) = Σp(x) = 1 ; p(x) = 1/n = 1/3
The mean, m ;
Σx*p(x) = (1/3 * 1/14) + (1/3 * 1/7) + (1/3 * 3/14)
= 1/42 + 1/21 + 3/42
= (1 + 2 + 3) / 42
= 6 / 42
= 1/7
The variance :
Σx²*p(x) - m²
((1/3) * (1/14)^2) + ((1/3) * (1/7)^2) + ((1/3) * (3/14)^2) - (1/7)^2
= 0.0238095 - 0.0204081
= 0.0034014
= 0.0034
(2a -36)
[tex](2a - {36)}^{2} [/tex]
What is the total area? Use 3 for Pi.
answer fast pls! xx
Answer:
146.3m²
Step-by-step explanation:
area of quarter circle=1/4π×8²
=50.3m²
area of the square=s²
8×8=64m²
area of the triangle=1/2bh
1/2×8×8=32m²
total area=50.3+64+32=146.3m²
i’m stuck please help me
Two drawings are given below. Drawing 2 is a scale drawing and Drawings 1 is an original drawing.
The scale factor from Drawing 1 to Drawing 2 is _________%
Answer:
40%
Step-by-step explanation:
Answer:
45%???????????
Step-by-step explanation:
Help plz:)))I’ll mark u Brainliest
Match the term with the definition. (5 points) Column A 1. Triangle : Triangle 2. Rectangle : Rectangle 3. Circle : Circle 4. Cylinder : Cylinder 5. Cone : Cone Column B a. perpendicular cross section of a pyramid b. parallel cross section of a sphere c. shape created when a right triangle is rotated about the y-axis d. shape created when a rectangle is rotated about the y-axis e. perpendicular cross section of a cylinder
Answer:
See belowStep-by-step explanation:
Q1
a. RectangleQ2
1. Triangle : a. perpendicular cross section of a pyramid 2. Rectangle : e. perpendicular cross section of a cylinder3. Circle : b. parallel cross section of a sphere 4. Cylinder : d. shape created when a rectangle is rotated about the y-axis 5. Cone : c. shape created when a right triangle is rotated about the y-axisQ3
CircleQ4
Rectangle with l > 2w, rotated about lQ5
22/56 = 0.39 Option BIf 4/5 of comcrete covers 5/6 of a bridge, how many tons if concrete is required to cover the entire bridge
Answer:
Write and solve an equation of proportions:
Step-by-step explanation:
4/5 ton 5/6 bridge
-------------- = ------------------
x 1 bridge
Then (4/5) * (1 bridge) = (5/6 bridge)x.
Solve this for x by mult. both sides of the equation by 6/5:
(6/5)(4/5) = x
24/25 tons of concrete are needed to complete the entire bridge.
Can you please help me with this equation
Answer:
0.915
Step-by-step explanation:
Hopefully this helps
Answer:
It's 50 ^^
Step-by-step explanation:
What are the solutions to the equation x2-12x + 20 = –20?
x = 2, 10
Solve value of x by factoring, getting
(x - 2)(x - 10) = 0
Sue has 100 dimes and quarters. If the total value of the coins is $21.40, how many of each kind
of coin does she have?
Jordan spent 5 hours over the weekend studying for 3 tests. He spent an equal amount of time studying for each test
Answer:
Option (4)
Step-by-step explanation:
Jordan spent 5 hours studying for 3 test with equal amount of time studying for each test.
On the number line, there are 3 small segments between each number.
Every small segment will represent time = [tex]\frac{1}{3}[/tex] hours
Total number of small segments = 15
If Jordan takes 3 equal durations for the study of each test,
Total number of small segments for each test = [tex]\frac{15}{3}=5[/tex]
Now we can plot these points on the number line.
Further count the segments for the answer ( 1 hour plus 2 small segments)
= 1 + [tex]2\times \frac{1}{3}[/tex]
= [tex]1\frac{2}{3}[/tex]
Therefore, time given for studying each test = [tex]1\frac{2}{3}[/tex] hours
Option (4) will be the answer.
30 PTS
Please make sure its easy to understand
help please and thank youu
Answer:
c
Step-by-step explanation:
number number number number
There are 3 answers need help to get my grade up to a 70%
Answer:
From (2, 1) move up one and over four
A computer tracking chip company wants to test their chips. They marked 32 birds by attaching computer chips to their legs. Later on, they catch 440 birds, 10 of which are marked with computer chips attached to them. They provided this data to animal welfare authorities to estimate the bird population. What is the best estimate of the bird population?
32/p=10/440
10p=14080
p=1408
Find the Area Of This Figure.
Answer:
42in
Step-by-step explanation:
First divide up the shape.
The bottom will cut off to form a 6x3 rectangle which will have an area of 18in. Next is the top portion which is a trapezoid. You can figure out the area two ways. You can divide it further into two triangles and a rectangle. Or you can use the trapezoid formula. In this case I feel like dividing it. So since the top is 2 inches the bases of the two side triangles must be 2 due to the bottom base of the whole shape being 6. (1/2*2*6)*2 = 12in. Lastly the center rectangle is 2*6 (got 6 from 9-3) which is also 12. So the top half added together 12+12 equals 24in. When adding both top and bottom portions (18+24) you get 42in.
Autumn invested 2800 in a account paying an interest rate of 6.2% compounded monthly.Assuming no deposits or withdrawals are made how much money to the nearest ten dollars would be in the account after 8years
Answer:
4530.55
Step-by-step explanation:
2800 x 6.2% = 173.6
2800 + 173.6 = 3157.96
repeat this step 8 times because you need to find the money in the account after 8 years. Tell me if you need further explanation
help i will give brainlist
Answer:
its #2 (on the top right)
Step-by-step explanation:
The diameter of a circular flower bed is 12 meters. What is the area of the flower bed? (Use 3.14 for pi)
Answer:
Step-by-step explanation:
diameter = 12 m so
the radius is d/2=12/2=6 m
A = pi*r² = 3.14 *6² = 113.04 m²
Answer:
113.04
Step-by-step explanation:
Which of the following is NOT type of magnet
a
permanent magnet
b
electromagnet
c
temporary magnet
d
Domain magnet
Answer:
Is not a type of magnet a domain magnet
118.4 divided by 6.4 = ?
EXPLAIN YOUR ANSWER
Answer:
18.5
Step-by-step explanation:
to do this question you need to move the decimals. When your denominator has a decimal in it, you need to get rid of it. in order to do that, you have to move the decimal on both numbers so the numbers being divided would be 1184/64. Just divide from there
The division of the given numbers results as 19.
What is a Decimal number?A decimal number is the representation of a number in whole and a part. The whole is represented by an integer while the part is equivalent to a number divided by the order of 10.
The given expression is 118.4 ÷ 6.4.
The division can be done step by step as follows,
Step 1:
Both the decimal numbers have only one digit after the decimal.
Thus, both can be multiplied by 10 to remove the decimal as follows,
118.4/6.4 = (118.4 × 10)/(6.4 × 10)
= 1184/64
Now, the equivalent expression becomes as 1184 ÷ 64.
Step 2:
Divide 1184 and 64 with their largest common factor as follows,
(1184 ÷ 16)/(64 ÷ 16) = 76/4
Step 3:
Again divide 76 and 4 to get 19 as follows,
76/4 = 19
Hence, the given expression can be simplified to give 19 as the result.
To know more about decimal number click on,
brainly.com/question/4708407
#SPJ2
Akili has two tests next week. The probability that he will pass the first test, science, is 3 4 . How he does on that test affects how he will do on his math test. If he passes science, then the probability that he will also pass the math test is 4 5 ; otherwise, the probability is only 1 3 that he will pass the math test. What is the probability he passes exactly one test
Answer:
0.2333 = 23.33% probability he passes exactly one test
Step-by-step explanation:
We have these following probabilities:
3/4 probability that he passes the first test.
If he passes the first test, 4/5 probability that he passes the math test.
If he does not pass the first test, 1/3 probability that he passes the math test.
What is the probability he passes exactly one test
Two scenarios:
Pass first(3/4 probability) and fails second(1/5 probability).
Fails first(1/4 probability) and passes second(1/3 probability). So
[tex]p = \frac{3}{4}*\frac{1}{5} + \frac{1}{4}*\frac{1}{3} = \frac{3}{20} + \frac{1}{12} = \frac{9 + 5}{60} = \frac{14}{60} = 0.2333[/tex]
0.2333 = 23.33% probability he passes exactly one test
