Answer:
11 $
Step-by-step explanation:
substitute 12 into t
making (0.5 × 12) + 5 = 6 + 5 = 11 $
For a polynomial p(x), if p(a) = 0, then which of the following must be a factor of p(x)?
x^2 + a
x — а
x + a
x^2 - a
Answer:
x _ a
Step-by-step explanation:
because if a is zero .then they should be subtraction
Is 150% of 36 less than 100, greater than 100 but less than 150, or greater than 150?
150% of 36 is
HELP!!
Answer:
no 150% of 36 is 54
Step-by-step explanation:
its 54 btw
If 14 g of a radioactive substance are present initially and 2 yr later only 7 g remain, how much of the substance will be present after 5
yr?
Answer:
2.47g
Step-by-step explanation:
Given that Ao=14
A(t)= Aoe^kt
k =2yrs
Considering the function where Ao is the initial substance, k is the rate of decay and t is the time.
At the 2nd year A(t) is 7
That is,
7 = 14e^2k
Solve for k
7/14 = e^2k
In(7/14) = 2k
k = In(7/14)÷2
k = In(0.5)/2
k = -0.34657
Hence, A(t)= 14e^-0.34657
So, when t is 5
A(5) = 14e^-0.34657×5
= 2.4749
Approx = 2.47g
Sheila bought a box of 25 headbands. When she arranged the headbands by color, she saw that 4 were green, 4 were red, 13 were blue, and 4 were pink. What is the percent of blue headbands she bought?
What are the solutions of the equation x4 – 5x2 - 36 = 0? Use factoring to solve.
A. x = +-2 and x = +-3
B. x = +-2i and x = +-3
C. x = +-2 and x = +-3i
D. x = +-2i and x = +-3i
Answer:
x = -2i and x = 2i
x = 3 and x = - 3
Step-by-step explanation:
x^4 - 5x^2 - 36 = 0
let u = x^2 and substitute
we have:
u^2 - 5u - 36 = 0
(u - 9)(u + 4) = 0
u = 9 and u = - 4
substitute back for u
x^2 = 9
x = 3 and x = - 3
x^2 = -4 -- i am going to assume you've learned imaginary numbers; otherwise, you cannot take the square root of a negative number.
x = -2i and x = 2i
pls answer im dying here
Answer: A rotation followed by a reflection. The two figures are congruent because (I'm not sure about this one because I don't know the options that the drop-down menu provides.)
Jan and Kim own numbers of marbles
that are in the ratio 5:6
Jan gains 2 more marbles and the ratio is
now 7:8
how many marbles do each own initially?
Answer:
5:6 + 7:8 = 12:14
Jan will have 12 marbles
Kim will have 14 marbles
Jan and Kim own 40 and 48 marbles respectively.
Important information:
Jan and Kim has marbles in ratio 5:6.Jan gains 2 more marbles and the ratio is 7:8.We need to find the initial number of marbles each own.
Ratio:Let the initial number of marbles be [tex]5x[/tex] and [tex]6x[/tex].
Jan gains 2 more marbles and the ratio is 7:8. So,
[tex]\dfrac{5x+2}{6x}=\dfrac{7}{8}[/tex]
[tex]8(5x+2)=7(6x)[/tex]
[tex]40x+16=42x[/tex]
Isolate the variable.
[tex]16=42x-40x[/tex]
[tex]16=2x[/tex]
[tex]\dfrac{16}{2}=x[/tex]
[tex]8=x[/tex]
Now, find the initial number of marbles.
[tex]5(8)=40[/tex]
[tex]6(8)=48[/tex]
Therefore, Jan and Kim own 40 and 48 marbles respectively.
Find out more about 'Ratio' here:
https://brainly.com/question/16054658
2. Allison has 22 meters of fabric to sew dresses. She uses 3 meters of fabric for each
dress. After how many dresses will Allison need to buy more fabric?
Answer:
7
Step-by-step explanation:
Answer:7 meters
Step-by-step explanation:
3 doesn’t go into 22 equally, but it goes into 21
If y varies directly with x, given x = 4 and y = 8. What is the value of k (constant of proportionality)?
Answer:
2Step-by-step explanation:
If y y varies directly with x, this is expressed as;
y ∝ x
y = kx
k is the constant of proportionality;
Given
x = 4 and y = 8
Substitute;
8 = 4k
4k = 8
k = 8/4
k = 2
Hence the constant of proportionality k is 2
-0.24 divided by 0.6
Answer:
-0.4
Step-by-step explanation:
How many tiles are there?
Answer:
71
Step-by-step explanation:
The rectangular coordinates of a point are given. Find polar coordinates (r,theta) of this point with expressed in radians. Let r>0 and -2pi
(-2(square root)3,2)
PLEASE HELP URGENT
Answer:
The answer is "The Polar coordinates (r,[tex]\theta)[/tex] =[tex](4,\frac{5 \pi}{6})[/tex]"
Step-by-step explanation:
Given point:
[tex]\to (-2\sqrt{3},2)[/tex]
Formula:
[tex]r=\sqrt{x^2+y^2}\\[/tex]
[tex]=\sqrt{(-2\sqrt{3})^2+(2)^2}\\\\=\sqrt{12+4}\\\\=\sqrt{16}\\\\=\sqrt{4^2}\\\\=4[/tex]
[tex]\therefore \\\\ \tan \theta= \frac{y}{x}\\\\[/tex]
[tex]\tan \theta=\frac{2}{-2\sqrt{3}}\\\\ \tan \theta= -\frac{1}{\sqrt{3}}\\\\ \tan \theta= \frac{5\pi}{6}\\\\ \theta= \frac{5\pi}{6}[/tex]
The Polar coordinates (r,[tex]\theta)[/tex] =[tex](4,\frac{5 \pi}{6})[/tex].
Where is the point (-2, -3) located in the coordinate plane?
A. In quadrant IV
B. In quadrant 1
c. In quadrant 11
D. In quadrant III
PLEASE HELP ME NOW I DON’T UNDERSTAND
Answer:
60
Step-by-step explanation:
1% of alcohol is 0.6 millimeters. That means 100% of alcohol is 60 millimeters.
95 points!!!! please help
When Deema begins her drive, she is 400 mi from home. She drives at an average rate of 50 mph until she gets home.
Draw a graph to represent this situation?
Answer:the sum of the first 20 terms of the sequence 50, 100, 150,.... is equal to
Step-by-step explanation:
Answer:
Just subtract, 400 - 50 = 350, 350 - 50 = 300....etc until you reach (8,0) point on the graph. Graph a straight line down from starting point (0,400) on graph to (8,0). This is your answer subtract 50 from 400 until you reach 0. Starting point (0,400) and ending point (8,0), it's a straight line down ward..
Step-by-step explanation:
Plz help plz help plz plz plz plz plz plz
Answer:
i think it might be segment BW
Step-by-step explanation:
At the toy store, Caleb and his younger brother, Gabe, each used money they had saved to buy Motor Mystery boxes. The convertibles are their favorite cars to get! Out of the 30 cars in Caleb's Jumbo box, 12 were convertibles. Out of the 10 cars in Gabe's Mini box, 4 were convertibles. Did the boxes have the same ratio of convertibles to total cars yes or no
Answer:
Answer: Yes
Step-by-step explanation:
Ratios
Caleb's Jumbo box has 30 cars, 12 of which are convertibles.
This gives a ratio of 12:30. The equivalent fraction of this ratio is:
[tex]\frac{12}{30}[/tex]
This fraction can be simplified by dividing both parts by 6:
[tex]\frac{2}{5}[/tex]
Thus Caleb's ratio of convertibles is 2:5.
Gabe's Mini box has 4 convertibles out of 10 cars. This gives a ratio of 4:10.
Simplifying by 2, the ratio is 2:5.
It's clear that both boxes have the same ratio of convertibles to total cars.
Answer: Yes
the total recommended area A, in square feet, of a sailboat's sails is given by [{MathJax fullWidth='false' A = 16\sqrt[3]{d^2} }] where d is the displacement of the hull in cubic feet. If a sailboat has 400 ft² of sail, what is the displacement of the hull of the sailboat?
Answer:
125ft³
Step-by-step explanation
Given the area of the sail boat expressed as [tex]A = 16\sqrt[3]{d^2}[/tex]. IF the area is 400ft², we are to find the displacement d;
Substitute A = 400 into the expression given and find d as shown;
[tex]A = 16\sqrt[3]{d^2}\\400 = 16\sqrt[3]{d^2}\\400/16 = \sqrt[3]{d^2}\\cube \ both \ sides\\(400/16)^3=( \sqrt[3]{d^2})^3\\64,000,000/4096 = d^2\\d = \sqrt{64,000,000/4096} \\d = 8,000/64\\d = 125 ft^3[/tex]
Hence the displacement of the hull of the sailboat is 125ft³
Oscar lends his brother $125.00 and charges him 5% interest. How much will Oscar's brother pay back for the loan?
Answer:
131.25 hope this helps
Step-by-step explanation:
use a calculator
need help with this question please and thanks 100 points
Decide whether the change is an increase or a decrease, and find the percent change. Original number = 35; New number = 16.... PLS LEAVE A STEP BY STEP EXPLANATION
Answer: 60 decrease or 150 decrease
Step-by-step explanation:
The graph shows how the value of a car changes over
time.
Which function best represents the relationship shown
in the graph?
Car
y
~ y = -3,000x9
30,000
25,000
By = 27,000x + 9
20,000
Value (dollars)
15,000
10,000
5,000
y = 27,000x - 3,000
0
1 2 3 4 5 6 7 8 9 10
Time (years)
Dy = -3,000x + 27,000
The linear function is given by y = -2000x + 30000
Linear functionA linear function is a function in the form:
y = mx + b
where y,x are variables, m is the rate of change and b is the y intercept.
Let y represent the value of the car after x years.
From the graph, the line passes through point (0, 30000) and (3, 24000), hence:
[tex]y-30000=\frac{24000-30000}{3-0} (x-0)\\\\y=-2000x+30000[/tex]
Find out more on linear function at: https://brainly.com/question/15602982
how many times can 3 go into 10000
Answer:
3333 times
Anymore and you'll have extra
May I have brainliest please? :)
56 projects 5:9 ratio divide
Which line is the graph of -3x=y
A B Or C
Answer:
Line A
Step-by-step explanation:
3 fair coins are tossed.
a) What is the probability of getting all 3 heads? (My Answer is 1/8)
b) What is the probability of getting all 3 tails? (My Answer is 1/8)
c) What is the probability of getting all 1 head and 2 tails? (My Answer is 3/8)
d) What is the probability of getting all 2 heads and 1 tail? (My Answer is 3/8)
My Question:
e) What do the probabilities from parts (a) to (e) add up to?
Answer:
1/8 + 1/8 + 3/8 + 3/8 = 2/8 + 6/8 = 8/8 = 1
So the answer would be 1.
Help quickly as possible thank you :)
Answer:
look at the picture, answer is there
9514 1404 393
Answer:
about 100 years
Step-by-step explanation:
2020 -1920 = 100
Outdoor lights were made safe about 100 years ago. (using information given in the problem statement)
_____
Additional comment
2020 -1930 = 90. So, the actual length of time is between 90 and 100 years.
Using additional research, we find mercury vapor lights were made to have a practical color in about 1929, so 91 years ago. They were invented somewhat before the 1920's but had a greenish color. Fluorescent phosphor coating was added in 1929 to make them produce a whiter light.
Which decimal is the largest?
A. 0.03
B. 0.3
C. 0.29
D. 0.039
The answer is B 0.3 because its 3/10 and all of the others is lesss
You are renting a house in the Seychelles for a week at $1700. What is the cost per day?
(Show your answer in dollars and cents: For example $300 is entered as 300.00)
Answer:
your paying for each day 56.66
For the right triangle shown, use the trig functions to find the value of x. Round your answer to the nearest tenth.
A. 26.3
B. 29.7
C. 41.6
D. 32.8
Answer: D) 32.8
=======================================================
Work Shown:
We'll apply the tangent ratio
tan(angle) = opposite/adjacent
tan(64) = x/16
16*tan(64) = x
x = 16*tan(64)
x = 32.8048614652688
x = 32.8
Make sure your calculator is in degree mode. One way to check is to compute tan(45) and you should get 1 as a result.
