Answer:
Step-by-step explanation:
40
Write an algebraic expression for each verbal description:
The number of people who do NOT have brown hair
b= number of people WITH brown hair
the price of a computer was decreased by 20% to £136. what was the price before it was decreased
Answer:
170
Step-by-step explanation:
Let x be the original price
x* .20 is the decrease
x - .20x = new price
.80x = new price
.8x = 136
Divide each side by .8
.8x/.8 = 136/.8
x =170
Answer:
7
Step-by-step explanation:
12. A culture of bacteria in the lab doubles every 6 minutes. Assume the growth follows a continuous exponential
model and you start with only 2 bacterium.
Using an appropriate exponential base, if this pattern continues to be applicable, find the time in
which the number of bacteria would reach 109. (Round to the nearest minute.)
Answer:
18 minutes
Step-by-step explanation:
if you divide 109 by 6, ya get 18.166666-
What is the surface area?
find the value of X round to the nearest tenth
Given:
In a right angle triangle triangle, the length of hypotenuse = 47 units.
One of the acute angle = 17°.
Opposite side of the given angle = X
To find:
The value of X. Round to the nearest tenth.
Solution:
In a right angle triangle,
[tex]\sin \theta=\dfrac{Opposite}{Hypotenuse}[/tex]
A right triangle is crated with the help of dotted lines. In this triangle,
[tex]\sin (17^\circ)=\dfrac{X}{47}[/tex]
[tex]0.2923717=\dfrac{X}{47}[/tex]
Multiply both sides by 47.
[tex]0.2923717\times 47=X[/tex]
[tex]13.74147=X[/tex]
[tex]X\approx 13.7[/tex]
Therefore, the approximate value of X is 13.7 units.
7. Find: (i) x + y +z (ii) a+b+c+d
Answer:
Q.1 360° Q.2 360°
Step-by-step explanation:
Q.1 let the third angle of the triangle be a
70°+40°+a=180(by angle sum property)
110°+a=180
a=180°-110°
a=70°
angle x=70°+x=180°(linear angle)
x=180°-70°
x=110°
angle z= 40°+z=180
z= 180°-40°
z=140°
angle y=a+y=180°
70°+y=+80°
y=180°-70°
y=110°
y+z+x=110° +110° +140°=360
Q.2 let the fourth angle of the quadrilateral be x
120°+70°+60°+ x=360° (by angle sum property)
250°+x=360°
x=360°-250°
x=110°
angle a=120°+a=180°(by linear angle)
a=180°-120°
a=60°
angle b=70°+b=180°
b=180°-70°
b=110°
angle c=x+c=180°
110° + c=180°
c=180°-110°
c=70°
angle d=60°+d=180°
d= 180° -60°
d=120°
a+b+ c+d=120°+110°+60°+70°=360°
2.5×10^3 times what number is equal to 5×10^6?
Answer:
2.5x10^3= 2,500
5x10^6= 5,000,000
Step-by-step explanation:
Here is a great trick that I always keep in mind whenever you are squaring 10 you add that many zeros for example.
10^4= 10000 (there are 4 zeros).
A science experiment involves periodically measuring the number of mild cells present on a piece of bread at the start to the experiment
Answer:
A
Step-by-step explanation:
tiook
6(x-4y) does anyone know this answer
Answer:
4
Step-by-step explanation:
Find a solution for
-2/9 = 4/m
I think its -18
Step-by-step explanation:
-2/9 = 4 /m
-2 ×-2 = 4
so you would do the same to the bottom
9 ×-2 = -18
sorry if I'm wrong
If purchased before the game, tickets to a high school baseball game cost $1.00. If purchased at the gate, the tickets cost $1.50. For a particular game, 500 tickets were sold and the total receipts were $587.50. How many tickets were purchased before the game and how many tickets were purchased at the gate?
Answer:
10
Step-by-step explanation:
Answer:
235
Step-by-step explanation:
HELP PLEASE!
An hour before show time, only 108 people are seated for a musical performance. According to the ticket sales, 97% of the people have yet to arrive. How
many tickets were sold for the musical performance?
Answer:
3600 tickets were sold for the musical performance.
Step-by-step explanation:
Given that:
Number of people seated for musical performance = 108
Percent to people to arrive yet = 97%
It means that the people who have already come are 3%.
Let,
x be the number of tickets sold.
3% of x = 108
[tex]\frac{3}{100}x=108\\[/tex]
0.03x = 108
Dividing both sides by 0.03
[tex]\frac{0.03x}{0.03}=\frac{108}{0.03}\\x=3600[/tex]
Hence,
3600 tickets were sold for the musical performance.
ILL GIVE BRAINLIEST!!!!
9. Fred bought 24 new baseball cards for $50. There were two types of cards. One type cost $1 per card, and the other cost $3per card. Define the variables, and write a system of equations to find the number of each type of card he bought. Then solve the system using the best method for the situation.
Answer:1$ cards = 11 cards 3$ cards= 13
Step-by-step explanation:the first equation is -x-y=-24 and the second is x+3y=50. Solving them as a system will get 2y=26 to y=13 then plug in 13 to the y for -x-y=-24 to get 11. Mr jacobs is hard I know lol. Use elimination by subtraction and keep the first equation as x+y=24 and then flip to negative
HELP ASAP PLEASE
List the coordinates for the plotted points A, B, C, and D.
Answer:
Use Desmos
Step-by-step explanation:
About 7/10 of the surface of the earth is covered with water. Express this as an equivalent fraction with 100 as the denominator. Fraction with 100 as denominators are known as per cent 50/100 means 50 per cent. So what percentage of the earth's surface is covered with water? What percentage covered with land
Answer:
70/100
Step-by-step explanation:
Surface of the earth covered with water = 7/10
Equivalent fraction of 7/10 with 100 as the denominator = 70/100
This means 70% of the earth surface is covered with water
Percentage covered with land = Total percentage - percentage covered with water
= 100/100 - 70/100
= 100-70/100
= 30/100
Percentage covered with land = 30%
g(-3) if g(x)=2x-4 show your work
Answer:
g(-3) = -10
Step-by-step explanation:
All you have to do is plug -3 in for x!
g(-3) = 2(-3) - 4
g(-3) = -6 - 4
g(-3) = -10
How to convert 0.231 to fraction
Answer:
[tex] \huge \boxed{0.231 =\frac{231}{1000}} [/tex]
hope this helps.
Write a system of inequalities
Find the length of the missing side
Answer:
c²=a²+b²
17²=289
10²100
a=√(17²-10²)
so 289-100=189
square root answer
=13.7477270849
Answer:13.75
A birdwatcher recorded how many birds were in two different parks each day for four days. The data is shown in the table.
Day
1 | 2 | 3 | 4
Park A 10 12 14 16
Park B 2 4816
Move options to the blanks to compare how the bird population is growing at each park.
Each day, the number of birds in Park A grows by
Each day, the number of birds In Park B grows by
If this pattern continues after day 4. Park
will always have more birds.
an increasing amount
a decreasing amount
the same amount
А
B
Answer:
Step-by-step explanation:
what’s the answer?
What is the constant of proportionality in the equation 3y = 2x
Answer:k = 2/3
Step-by-step explanation:
When a variable y directly relates to another variable x, we can say:
y=kx
Given the equation, we can say
3y=2x
y= 2x/3
Putting the value of y from above discussion
kx = 2x/3
x is being cancelled on both sides of equation
k= 2/3
Answer:
k = 2/3
Step-by-step explanation:
i don’t know how to explain sorry I’m not good at explaining but I hope this helps
What does X = In question 2
Answer:
10
Step-by-step explanation:
10/5=2/1 or 2
4+2=6
Can anyone help me understand?? I genuinely don’t understand. Thank you!
9514 1404 393
Answer:
y = (1/4)x^2 -x -4
Step-by-step explanation:
When you are given a focus and a vertex, the equation of a parabola can be written as ...
y = (1/(4p))(x -h)² +k . . . . . . vertex (h, k); focus-vertex distance p
Here, the vertex is (h, k) = (2, -5) and the focus-vertex distance is 1. That means the equation of the parabola in vertex form* is ...
y = (1/4)(x -2)² -5
Expanding this equation, we get ...
y = (1/4)(x² -4x +4) -5 = (1/4)x² -x +1 -5
Then the standard form equation is ...
y = (1/4)x² -x -4
_____
* In the UK, and perhaps other places, the vertex form is referred to as "standard form." You need to be aware of the form that is being requested here. I have answered using the US version of "standard form." YMMV
Write the equation of the line based on the graph below
Answer:
The answer is
[tex]y = 2x + 4[/tex]
Step-by-step explanation:
Remember ↷
[tex]Slope = \frac{rise}{run} [/tex]
Sarah and $600 per week and spends 15% of earnings on transportation how much does Sarah Spain and transportation every week plz this is very important
Answer she spent 90$ so she should have 510 dollars left
Step-by-step explanation:
15% of 600 is 90. 90-600=510
Write one hundred twenty-one and twenty one thousandths in decimal notation.
Answer:
121.021
Step-by-step explanation:
Find the slope and the -intercept of the line. y=-1/5x+7 plz i need help
Answer:
slope= -1/5
y-intercept=7
Step-by-step explanation:
y=mx+b is a linear equation
m=slope
b=y-intercept
need a correct answer
A B C D E F
Answer:
B and D
F also has vertical angles however they haven't been numbered like the others
plzzzzzzzzzzzzzzzzzzzzzzz
Answer:
18x to the power of 2 -15x+2
Step-by-step explanation:
Plz help its really urgent!!
Answer:
3)0.4 and 1.8
Step-by-step explanation:
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