Answer:
[tex] \boxed{460 \: bacteria}[/tex]
Find the y intercept and slope
confused on this a bit. No explanation needed
Answer:
4 in
Step-by-step explanation:
reasoning: half of a circle is the diameter the radius is half of a diameter
pls give brainliest
btw if you ever need help talk to me
btw sorry for the explanation
it wouldn't let me explain
If half of the circle is 16 inches the radios is 4 because the radios is straight line from the center to the circumference of a circle or sphere.
Answer: 4
Hope this helps~
Abby has a collection of 61 dimes and nickels worth $4.40.How many nickels does she have?
9514 1404 393
Answer:
34
Step-by-step explanation:
Let x represent the number of nickels Abby has. Then the number of dimes is 61-x. The total value of the coins, in cents, is ...
5x +10(61-x) = 440
-5x +610 = 440 . . . . . simplify
x - 122 = -88 . . . . . . . .divide by -5
x = 34 . . . . . . . . . . . . add 122
Abby has 34 nickels in her collection of coins.
Does the line passing through the points (3,3) and (7,11) intersect the line passing through the points (5,8) and 13,24) ?
Answer:
no they don't intersect
Step-by-step explanation:
line 1:
m=11-3/7-3=8/4=2
y-3=2(x-3)
y-3=2x-6
y=2x-3
line 2:
m=24-8/13-5=16/8=2
y-8=2(x-5)
y-8=2x-10
y=2x-2
no they don't intersect cause they are parallel and parallel lines don't cross
A linear sequence starts a + 2b, a + 6b, a+10b
The 2nd term has value 8 and the 5th has value 44
Work out the values of a and b
Answer:
a = -12
b = 3
Step-by-step explanation:
second term = a + 6b
to find the 5th term, notice the pattern (since this is a linear equation, each term increases by the same amount) and each term increases by 4b: 2b -> 6b -> 10b.
therefore, the 4th term would be a+14b and the 5th would be a+18b
so a + 6b = 8
and a + 18b = 44
u now have two simultaneous equations, which can be solved through substitution or elimination. I'm gonna use elimination because it's quicker in this case:
[tex]a + 6b = 8\\- (a + 18b = 44)\\ -12b = -36\\b = 3[/tex]
steps: (since the a would cancel out by subtracting, subtract then solve for b. divide by -12 on both sides to isolate the b)
now that u know the value of b, substitute it into an equation to solve for a:
a + 6b = 8
a + 6(3) = 8
a + 24 = 8
a = 8 - 24
a = -16
hope this helps!
Ethan and Bob are having a skateboard race. Ethan began at the starting line
and rode at a constant rate of two feet per second. Bob had a fourteen-foot
head start and rode three feet every five seconds.
What's is the linear equation
Answer:
aa
Step-by-step explanation:
aa
There is a 10% chance of rain tomorrow. A spinner with 10 sections is spun to simulate the probability of rain. If the results are 3, 6, 1, 8, and 3, then what is the difference in the experimental probability from the simulation and the prediction?
Answer:
On the simulation prediction you got a 10% chance
While in the experimental one the average is 42%
Sam is studying a geometric drawing. He observes that ZPQR and ZAQB
are obtuse vertical angles and that ZQPR and ZQAB are congruent. He
proves that PQ = AQ. Which postulate uses Sam's information to prove
that APQR - AAQB?
Answer:
it would be ASA
Step-by-step explanation:
∡QAB ≅ ∡QPR
side AQ ≅ side AP
∡QAB ≅ ∡QPR
Helpppppppppppppppppp is this right
Answer:
The first one is B and the second one is correct
Step-by-step explanation:
Answer:
I think 1 is actually B and 2 is right -Your friend, Bill Cipher
Step-by-step explanation:
Hellppppp pleaseeee ASAP
Answer:
can you type the answer because the picture doesn't show i can help you I'm in college and know basically everything about math type it in and i gotchu homie
Answer:
Hola its MEEEE
Step-by-step explanation:
1 of 9 3 7 of students at a school are boys. If there are 2282 students at the school, how many are girls?
Answer: 1304
Step-by-step explanation:
Fraction of the boys = 3/7
Fraction of the girls = 1 - 3/7 = 4/7
Number of students = 2282
The number of girls will be:
= Fraction of girls × Total number if students
= 4/7 × 2282
= 1304
There are 1304 girls
5, 7, 7, 8, 10, 11, 12, 15, 17. Q1 = 7, Q2 = 11, Q3 = 15 Q1 = 7, Q2 = 10, Q3 = 13.5 Q1 = 6, Q2 = 9, Q3 = 12 Q1 = 7.5, Q2 = 10.5, Q3 = 13.5
Answer:
[tex]Q_1 = 7[/tex]
[tex]Q_2 = 10[/tex]
[tex]Q_3 = 13.5[/tex]
Step-by-step explanation:
Given
5, 7, 7, 8, 10, 11, 12, 15, 17.
Required
Determine Q1, Q2 and Q3
The number of data is 9
Calculating Q1:
Q1 is calculated as:
[tex]Q_1 = \frac{1}{4}(N + 1)[/tex]
Substitute 9 for N
[tex]Q_1 = \frac{1}{4}(9 + 1)[/tex]
[tex]Q_1 = \frac{1}{4}*10[/tex]
[tex]Q_1 = 2.5th\ item[/tex]
This means that the Q1 is the mean of the 2nd and 3rd data.
So:
[tex]Q_1 = \frac{1}{2}(7+7)[/tex]
[tex]Q_1 = \frac{1}{2}*14[/tex]
[tex]Q_1 = 7[/tex]
Calculating Q2:
Q2 is calculated as:
[tex]Q_2 = \frac{1}{2}(N + 1)[/tex]
Substitute 9 for N
[tex]Q_2 = \frac{1}{2}(9 + 1)[/tex]
[tex]Q_2 = \frac{1}{2}*10[/tex]
[tex]Q_2 = 5th\ item[/tex]
[tex]Q_2 = 10[/tex]
Calculating Q3:
Q3 is calculated as:
[tex]Q_3 = \frac{3}{4}(N + 1)[/tex]
Substitute 9 for N
[tex]Q_3 = \frac{3}{4}(9 + 1)[/tex]
[tex]Q_3 = \frac{3}{4}*10[/tex]
[tex]Q_3 = 7.5th\ item[/tex]
This means that the Q3 is the mean of the 7th and 8th data.
So:
[tex]Q_3 = \frac{1}{2}(12+15)[/tex]
[tex]Q_3 = \frac{1}{2}*27[/tex]
[tex]Q_3 = 13.5[/tex]
Rotate the point (7,8) around the origin 90 degrees counterclockwise.
State the image of the point.
(-8,7)
(8,-7)
(8,7)
(-7,-8)
In the function f(x) =2x+1, what is f (5)?
F (5) = {___}
t h e A n s w e r i s:
x = - 1 / 2
explaintion
can someone please help,, its 8th grade math
Solve the following equation for x: (2/3)x = 10 *
x = 8
x = 5
x = 15
x = 30
Answer:
the answer is x=15
I am sure
Answer:
x = 15
Step-by-step explanation:
(2/3)x = 10
(2/3x) * 3 = 10 * 3
2x ÷ 2 = 30 ÷ 2
x = 15
(Sat prep) find the value of x, 65 degrees and 75 degrees isosceles triangle.
Answer:
x = 40°Step-by-step explanation:
The triangle is not isosceles
The angles of the triangles are:
65°, 75° and x for both of the bigger and the smaller trianglesThe interior angles of a triangle sum to 180
x = 180° - (65° + 75°)x = 180° - 140°x = 40°Oliver makes blueberry jam every year. The number of pints of jam he makes this year can be represented by the expression 4p - 9
Oliver made 8 pints of jam last year. How many pints does he make this year?
Answer:
23 pints
Step-by-step explanation:
Plug in 8 pints for p and solve
4*8-9
32-9
23 pints this year.
Answer:
23
Step-by-step explanation:
PLZ HELP
For each value of u , determine whether it is a solution to 8u+6>-10.
2: yes or no
-7: yes or no
-2: yes or no
5: yes or no
1 Find the x-intercept as a point (x,y).
I'm not quite sure what to do can someome please help me quick. I'll make brainliest
Answer:
x,0
Step-by-step explanation:
x-intercept just means where the line crosses the x axis. the x-intercept is x,0
Answer:
X intercept is ( -1 , 2)
Step-by-step explanation:
Using The graph below identify the axis of symmetry for the parabola below 
Answer:
x=-3
Step-by-step explanation:
The axis of symmetry is the line that separates a parabola directly in half. It is measure on x axis because it is being split in terms of that number. Next, you identify the origin and find exactly where the parabola is in half and that is your answer. Another way to do this would be to identify the vertex of the parabola. The answer is the x coordinate of the location of the vertex. (The highest point of a parabola.)
Jose rents a bike for $4 plus
$2.50 per hour. Elaine rents a
moped for $10 plus $1 per
hour. Write and solve the
system of equations to
determine at what point they
spend the same amount.
Answer:
4 hours
Step-by-step explanation:
Step One: Define Variables -Let x be the # of hours spent using the vehicles
Step Two: Make Equations -Jose: 4 + 2.5x
Elaine: 10 + x
Step Three: Solve -If they spend the same amount then that means:
Elaine's price = Jose's price, therefore:
4 + 2.5x = 10 + x
1.5x = 6
x = 4
At 4 hours, both prices are the same.
Answer:
They spend the same amount after 4 hours
Find an expression which represents the difference when (6x-3y) is subtracted from (9x+2y) in simplest terms.
Answer:
[tex]3x+5y[/tex]
Step-by-step explanation:
Subtract (6x-3y) from (9x+2y):
[tex](9x+2y)-(6x-3y)[/tex]
This can also be seen as:
[tex](9x+2y)-1(6x-3y)[/tex]
Distribute the -1 to (6x-3y):
[tex](9x+2y)-1(6x)-1(-3y)\\\\(9x+2y)-6x+3y[/tex]
Simplify the parentheses:
[tex]9x+2y-6x+3y[/tex]
Group like terms:
[tex](9x-6x)+(2y+3y)[/tex]
Combine:
[tex]3x+5y[/tex]
This expression can't be further simplified. Therefore, 3x+5y is the answer.
:Done
Find the surface area of a cylinder with a base radius of 4 yards and a height of 9 yards
Answer:
i think 72 yards
Step-by-step explanation:
4×2=8 8×9=72 (note iam still in seven grade iam not sure of my answer
A video game player is in the shape of a rectangular prism. It has a length of 20 inches, a width of 11.4 inches, and a height of 3.5 inches. What is the volume of the video game player in cubic inches?
Answer:
798
Step-by-step explanation:
Suppose a constellation of stars is plotted on a coordinate plane. The coordinates of the first star are (–2, 4). The second star is translated down 4 units. What are the new coordinates?
Answer:
Coords (-2,0)
Step-by-step explanation:
Translation means moving the point in the direction that is stated by the amount stated. Down means decreasing the number value along the y-intercept. So using simple math subtract 4 by 4 and you get 0. Since we don't move the left or right which means going along the x-intercept lines. We get (-2,0)
On a windless day In Janurafy, Carl ties 300 helium filled balloons to his lawn chair 80ft from his 20ft tall house, and begins a vergical ascent into the sky. Hos high is carl when the angle lf depression from carl to the top of his house is 42°
Answer:
The answer is below
Step-by-step explanation:
θ = 90° - 42° = 48°
The angle formed is a right angled triangle, therefore trigonometric identities can be used to find the length of the triangle sides.
tan(θ) = opposite / adjacent
tan(48) = 80 / h
h = 80 / tan(48)
h = 72.03 ft
h is the vertical distance from carl to the top of his house, to get his total height to the ground (H), we use:
H = h + height of house
H = 72.03 + 20
H = 92.03 ft
Therefore Carl is 92.03 ft high
A person who is 6 feet tall is standing 120 feet from the base of a tree, and the tree casts a 130 foot shadow. The person's shadow is 10 feet in length. What is the height of the tree?
Answer:
the tree is 65 feet high.
Step-by-step explanation:
let 'x' be the height of the tree
draw the tree, the person and the shadows - notice the similar triangles
the following proportion counts
x : 5 = 130 : 10
x = (5*130)/10
x = 65 feet
There are 15 red beads and 24 blue beads in a bag.
Write the ratio of blue beads : red beads in its simplest form.
Answer:
8:5
Step-by-step explanation:
Number of red beads = 15
Number of blue beads = 24
ratio of beads in blue : red
= 24 : 15
= 8 : 5 ...............(reducing by 3)
Answer:
5:8
Step-by-step explanation:
you divide both parts by 3 to get simplest form. 15 divided by 3 is 5. 24 divided by three is 8 :)
Sal has 3 of a sheet of poster board. Four friends are sharing the sheet equally. What fraction of the original sheet does each friend get?
Answer:
Step-by-step explanation:
3 sheets are shared between four friends.
Each friends will get = 3 ÷ 4
= [tex]\frac{3}{4}[/tex]
8 pomegranates cost $20.24.
How many full pomegranates can you buy for $50?
plz help
Answer:
19.76
Step-by-step explanation:
8/20.24=x/50
cross product
20.24*x=8*50
20.24x=400
x=400/20.24
x=19.76