I don't know pls pls plsssssss help me I don't understand!!!!♂️
Solve the following equation for 0 ≤ ѳ< 2π. Show your work.
sec^2ѳ-6=-4
Answer:
Step-by-step explanation:
sec²θ-6 = -4
sec²θ = 2
1/cos²θ = 2
cos²θ = ½
cosθ = ±1/√2 = ±√2/2
θ = π/4, 3π/4, 5π/4, 7π/4
Is 7/12 greater than or less than 4/3
Answer:
[tex]\frac{7}{12}[/tex] is less than [tex]\frac{4}{3}[/tex]
Step-by-step explanation:
Hi there,
When solving this problem, it is highly recommended to have the same denominator. This will make it significantly easier to answer these types of questions.
Since three is a factor of 12, we can multiply the denominator by four to get the same denominator value. This makes [tex]\frac{4}{3}[/tex] equivalent to [tex]\frac{16}{12}[/tex].
Now that we have the same denominator, it is clear that [tex]\frac{7}{12}[/tex] is less than [tex]\frac{4}{3}[/tex].
Hope this gives you a clearer idea about this concept. Cheers.
If 224 students out of 560 students chose chocolate ice cream. What percent is this?
Answer:
40%
Step-by-step explanation:
224/560 = 2/5 = 0.4
Jose is buying fencing to surround his garden. If his garden has a perimeter of 24 yards, and fencing costs $3.00 a foot, how much money will he need for the fencing?
Answer:
216 dollars
Step-by-step explanation:
24yd*3= 72 feet*3= 216 dollars
if my answer helps please mark as brainliest.
Answer:
72$
Step-by-step explanation:
24*3.00
Borrowing money mastery test
Answer:
?
Step-by-step explanation:
Answer:
use quizlet
Step-by-step explanation:
How many lives does a cat have, also there are 20cats in the room, how many cat lives are in the room
Answer:
20
Step-by-step explanation:
Technically cats only have one life even though they can survive falls and such
Can someone please feel where to put the numbers on the number line please I will give u brilliant
Answer:
-2: Start from 0 and go two steps to the left.
-4: Start from 0 and go four steps to the left.
-6: Start from 0 and go six steps to the left.
-8: Start from 0 and go eight steps to the left.
And the numbers are decreasing.
3×7 =???????????????
Answer:
21
Step-by-step explanation:
ANSWER QUICK PLS WILL MARK BRAINLIEST
You should spend no more than 30% of your take-home pay on rent. Your take-home pay is $1,625 per month. How much
can you afford to pay for rent per month? (Remember to have a $ and 2 decimal places in your answer)
PLEASE HELP I WILL GIVE BRAINLIEST!!
Mike and his sister did some laundry at the laundromat. To wash a load costs $2 and to dry a load costs another $2. Mike and his sister washed and dried 4 loads of laundry. They also had to buy 4 packets of detergent for $1 per packet. How much money did Mike and his sister spend to do their laundry?
a) $16
b) $28
c) $12
d) $20
Answer:
answer is d) $20
Step-by-step explanation:
because 2x4=8 + 2x4=8 = $16 then 4 packets for $1 is $4 16+4= $20
Answer:
D) $20
Step-by-step explanation:
Wash plus dry = $4
$4 times 4 times = $16
$1 for one detergent times the four packets = $4
Total is $20
What trig function would I use to solve for x?
Answer:
Sine
Step-by-step explanation:
sine = opposite/hypotenuse
sin59 = x/16
Answer:
Sine
Step-by-step explanation:
SohCahToa.
The two sides are on the opposite side of the angle and on the hypotenuse.
(hope this helps :P)
A school holds classes from 8.00am to 2.00pm. For what percent of a 24 hour day does school hold classes?
Answer:
25%
Step-by-step explanation:
8 am to 2 pm is 6 hours
6 is 25% of 24
Answer:
25%
Step-by-step explanation:
6 four times is 24 and 24 in half is 12 and 12 in half is 6 so you split it up equally you have a percentage of 25%
4 2/3 x 13 literally dont want to do the work
Answer:
60 2/3
Step-by-step explanation:
I need help with this
Answer:
300 cm²
Step-by-step explanation:
10² is 100
100 x 3 is 300
Buy any mistakes in the renaming of the fractions below show the correct remaining 9 / 4 = 9 / 12 2 / 3 + 6 / 12
Step-by-step explanation:
3/4=9/12 CORRECT
2/3=6/12 FALSE
Step-by-step explanation:
What is done to top of the fraction must be done to the bottom as well in order for the renaming to be true.
3*3 = 9
4*3 = 12
Therefore proven to be true
However,
2*3 = 6
but 3*3 = 9
The second fractions is renamed incorrectly and should be either 2/4=6/12 or 2/3=2/9
Hope this helps!
Need help on this please this one is hard for me
9514 1404 393
Answer:
y = -7x
Step-by-step explanation:
The line goes through the origin, so the y-intercept is b=0.
The line goes through the point (1, -7), so has a "rise" of -7 for a "run" of 1. The slope is ...
m = rise/run = -7/1 = -7
Then the slope-intercept form equation is ...
y = mx + b
y = -7x
Need help plz and thank u
Answer:
94 friends
Step-by-step explanation:
25/100 × 376
376 ÷ 100 = 3.76
3.76 × 25 = 94
PLZ HELP DUE IN 30 MIN
Answer: 10 minutes
Step-by-step explanation: the red line (company a) and the blue line (company b) intersect at the same point one time, at the $20 for 10 minutes point on the graph
Answer:
20$
Step-by-step explanation:
the lines Intersect on the 20
Given the following table, determine the missing value.
a. 1.15
C 15
b. 115
d. .15
Answer:
it's c because it's the missing value
Can someone answer and explain ILL MARK BRAINLIEST
Answer:
x=1
y=-2
Step-by-step explanation:
2x-3y=8
4x+3y=-2
When we add the two equations, the y’s cancel out and we’re left with
6x=6
x=1
Now that we know x=1, we put it back in one of the equations to find y.
2(1)-3y=8
-3y=6
y=-2
Please help I give brainliest
Answer:
Angle T
Step-by-step explanation:
Select the correct answer.
What is the missing side length in this right triangle?
A.
15
B.
21
C.
225
D.
441
Answer:
is there a pic?
Step-by-step explanation:
What is 10x -5 + 3x -2
[tex]10x -5 + 3x -2[/tex], original equation
[tex]10x + 3x = 13x[/tex] [tex]-5-2=-7[/tex]
[tex]13x -7[/tex], final answer
Solve the proportion.
20/13 = 60/d
d=
Answer:
[tex]d = 39[/tex]
Step-by-step explanation:
1) Multiply both sides by d.
[tex] \frac{20}{13} d = 60[/tex]
2) Simplify 20/13d to 20d/13.
[tex] \frac{20d}{13} = 60[/tex]
3) Multiply both sides by 13.
[tex]20d = 60 \times 13[/tex]
4) Simplify 60 × 13 to 780.
[tex]20d = 780[/tex]
5) Divide both sides by 20.
[tex]d = \frac{780}{20} [/tex]
6) Simplify 780/20 to 39.
[tex]d = 39[/tex]
Therefor, the answer is d = 39.
what is the equation of the line. please help! quick.
Answer: y = - 2/3x + 4
The following question has two parts. First, answer part A. Then, answer part B.
Gabriel's father has a garden in the back yard. The dimensions of the garden are shown here.
A green rectangle is shown. The width is labeled as 2 and two-thirds feet. The length is labeled as 7 and three-fourths feet.
Part A
Calculate the area of the garden. Show at least one step before you show your solution.
Part B
You found the area of the garden in Part A. Explain briefly, without doing any calculations, how you would find
5
6
of this area
i will give brainlyest if right and there are two parts part a and part b
Answer:
Step-by-step explanation:answer is 237
When fourteen different second-year medical students measured the blood pressure of the same person, they obtained the result listed below. Assuming that the population standard deviation is known to be 9, construct and interpret a 99% confidence interval estimate of the population mean.
Data: 128 121 129 128 123 137 138 147 122 144 125 140 134 125
Answer:
The 99% confidence interval estimate of the population mean is between 125.3 and 137.7. This means that we are 99% sure that the true population mean, that is, the mean blood pressure of all second-year medical students, is in this interval.
Step-by-step explanation:
The first step is finding the sample mean, which is the sum of all 14 blood pressures, divided by 14. So
[tex]S = \frac{128 + 121 + 129 + 128 + 123 + 137 + 138 + 147 + 122 + 144 + 125 + 140 + 134 + 125}{14}[/tex]
[tex]S = 131.5[/tex]
Confidence interval:
We have that to find our [tex]\alpha[/tex] level, that is the subtraction of 1 by the confidence interval divided by 2. So:
[tex]\alpha = \frac{1 - 0.99}{2} = 0.005[/tex]
Now, we have to find z in the Ztable as such z has a pvalue of [tex]1 - \alpha[/tex].
That is z with a pvalue of [tex]1 - 0.005 = 0.995[/tex], so Z = 2.575.
Now, find the margin of error M as such
[tex]M = z\frac{\sigma}{\sqrt{n}}[/tex]
In which [tex]\sigma[/tex] is the standard deviation of the population and n is the size of the sample.
[tex]M = 2.575\frac{9}{\sqrt{14}} = 6.2[/tex]
The lower end of the interval is the sample mean subtracted by M. So it is 131.5 - 6.2 = 125.3
The upper end of the interval is the sample mean added to M. So it is 131.5 + 6.2 = 137.7
The 99% confidence interval estimate of the population mean is between 125.3 and 137.7. This means that we are 99% sure that the true population mean, that is, the mean blood pressure of all second-year medical students, is in this interval.
a girl is three years older than his brother. the product of their ages is 54, find their ages
Answer:
The sister is 25.5. The brother is 28.5.
Step-by-step explanation:
25.5 + 28.5 = 54.
The boy's age is 9.
The girl's age is 12.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
Boy's age = x
Girl's age:
y = x + 3
Now,
x (x + 3) = 54
x² + 3x - 54 = 0
x² + (9 - 6) - 54 = 0
x² + 9x - 6x - 54 = 0
x(x + 9) - 6(x + 9) = 0
x - 6 = 0
x = 6
x + 9 = 0
x = -9 ( cannot be negative)
Now,
x = 9
Boy's age = 9
Girl's age = 9 + 3 = 12
Thus,
The boy's age and the girl's ages are 9 and 12.
Learn more about expressions here:
https://brainly.com/question/3118662
#SPJ2
A solid has 20 vertices and 30
edges. How many faces does
it have?
Answer:
12 Faces
Step-by-step explanation:
Answer:
Step-by-step explanation:
12 faces is the answer !!