Answer:
8(2c - d)
Step-by-step explanation:
16c - 8d ← factor out 8 from each term
= 8(2c - d)
In a particular right triangle, the two legs have lengths of 40 inches and 42 inches. What is the area of the triangle?
Answer:
i don't know I don't have ideas about it
Which pair of lines are perpendicular?
y = -4x + 1 and 8x + 2y = -10
x = 4 and y = -1
y = -8 and y = 2
x - y = 7 and y = x + 3
Answer: A
Step-by-step explanation:
Is 8397 divisible by 9 ? Explain your answer
Answer:
Yes
Step-by-step explanation:
9 can go into 8397 evenly without any remainders.
Answer:
8397/9= 933
8397 is divisible by 9 if you divide 8397 by 9 and the quotient is an integer. The easiest way to determine if 8397 is divisible by 9 is to calculate the sum of the digits in 8397. If the sum of the digits is divisible by 9, then 8397 is divisible by 9.
8+3+9+7= 27
27 is divisible by 9
Step-by-step explanation:
Orlando has a loan with an effective interest rate of 7.918%, compounded annually. which of the following must be true? i. in the effective rate formula, n is equal to one. ii. the nominal rate is 7.918%. iii. the federal funds rate is static. a. i and ii b. ii only c. iii only d. i, ii, and iii
The right answer will be both I and II
I. In the effective rate formula, n is equal to one.
II.The nominal rate is 7.918%.
What is compound interest?Compound interest is the interest on a loan or deposit that accrues on both the initial principal and the accumulated interest from previous periods.
The formula for the compound interest is given as:
[tex]A=p(1+\dfrac{r}{n})^{nt}[/tex]
Here
A= amonut
P= principle
r=rate of interest
t=time period
n=for how much time compunded
Thus we can see in the question it is compounded annually so n = 1 and the rate is given as 7.918%
Thus the right answer will be both I and II
I. In the effective rate formula, n is equal to one.
II.The nominal rate is 7.918%.
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34. Is this polygon it is convex or concave.
Solve the following inequality using the algebraic approach )pictire provided)
Answer:
x <4
Step-by-step explanation:
hope it helps
for any question comment me ❤❤
11) Ms. Ripa's family is planning to come visiting her from New York. She hopes to take
them to some of the National Parks in Utah while they are here, but she needs to save up to
buy their tickets. Adult tickets are $12 each, and child tickets are $7 each. If she has 5 adults
and 4 children coming to visit, how much money will she need to save up to buy all of their
tickets?
Help me find x but in only simplified radical form
Answer:
x = [tex]\sqrt{15}[/tex]
Step-by-step explanation:
Since 2 sides are equal then triangle is isosceles and the segment from the vertex is a perpendicular bisector.
Th triangle is divided into 2 right triangles with legs x and 7 and hypotenuse 8
Using Pythagoras' identity, then
x² + 7² = 8²
x² + 49 = 64 ( subtract 49 from both sides )
x² = 15 ( take square root of both sides )
x = [tex]\sqrt{15}[/tex]
A computer store is having a sale. A laptop originally cost $700 and is now being sold at a fifth off of the original price. What is the sale price of the laptop?
Answer:
$560
Step-by-step explanation:
1/5th the original price just means 20%
20% of 700 is 140
700*.20= 140
Since it's 20% off that means subtraction
700-140=560
Hope this helps!
y=2x+1 and y=3x.
At what x-values are the equations equal?
x = 1 and x = 3
x = 0 and x = 1
x = 1 and x = -1
x = 2 and x = 3
Answer:
x = 1 and x = 3
Step-by-step explanation:
Let's solve your system by substitution.
y=2x+1;y=3x
Step: Solvey=2x+1for y:
y=2x+1
Step: Substitute2x+1foryiny=3x:
y=3x
2x+1=3x
2x+1+−3x=3x+−3x(Add -3x to both sides)
−x+1=0
−x+1+−1=0+−1(Add -1 to both sides)
−x=−1
−x
−1
=
−1
−1
(Divide both sides by -1)
x=1
Step: Substitute1forxiny=2x+1:
y=2x+1
y=(2)(1)+1
y=3(Simplify both sides of the equation)
Answer:
x=1 and y=3
1750 litres of petrol is required to fill the tanks of 50 cars. If 1960 litres of petrol is available, how many more cars can be filled?
1750 litres.............50 cars
1960 litres.............n cars
so n x 1750 = 1960 x 50
n = 98000 : 1750
n = 56
56 cars tanks will be filled
Answer:
56
Step-by-step explanation:
1750 divided by 50 to find out how much litres each car gets. =35
so 35 litres per car so divide 1960 by 35. =56
56 cars can be filled
CHECK ANSWER.
the six extra cars so 35 multiplied by 6. =210
1750+210=1960!
Determine the unit rate of a marathon runner who travels 9/2 miles in 3/4 hour.
Answer:
The marathon runner runs 1 mile every 10 minutes.
Step-by-step explanation:
9/2 miles is equal to 4.5 miles. 3/4 hours is equal to 45 minutes.
Please help! Find the missing measurement. Problem is below!
Answer:
7 cm
Step-by-step explanation:
Pls mark me as brainliest if its correct and learn wrll
prove that 1-tan^2x/1+tan^2x=2cos^2x-1
Answer:
see explanation
Step-by-step explanation:
Using the trigonometric identities
tan x = [tex]\frac{sinx}{cosx}[/tex] , sin²x + cos²x = 1
Consider the left side
[tex]\frac{1-tan^2x}{1+tan^2x}[/tex]
= [tex]\frac{1-\frac{sin^2x}{cos^2x} }{1+\frac{sin^2x}{cos^2x} }[/tex] ← multiply numerator/ denominator of the whole fraction by cos²x
= [tex]\frac{cos^2x-sin^2x}{cos^2x+sin^2x}[/tex]
= [tex]\frac{cos^2x-sin^2x}{1}[/tex]
= cos²x - sin²x
= cos²x - (1 - cos²x)
= cos²x - 1 + cos²x
= 2cos²x - 1
= right side , thus proven
[tex]\frac{1 - \tan^2(x)}{1 + \tan^2(x)}\\= \frac{\frac{\cos^2(x)}{\cos^2(x)} - \frac{\sin^2(x)}{\cos^2(x)}}{\frac{\cos^2(x)}{\cos^2(x)} + \frac{\sin^2(x)}{\cos^2(x)}}\\= \frac{\frac{\cos^2(x) - \sin^2(x)}{\cos^2(x)}}{\frac{\cos^2(x) + \sin^2(x)}{\cos^2(x)}}\\= \frac{\cos^2(x) - \sin^2(x)}{\cos^2(x)} \cdot \frac{\cos^2(x)}{\cos^2(x) + \sin^2(x)}\\= \frac{(\cos^2(x) - \sin^2(x)) \cdot \cos^2(x)}{\cos^2(x) \cdot (\cos^2(x) + \sin^2(x))}\\= \frac{\cos^2(x) - \sin^2(x)}{\cos^2(x) + \sin^2(x)}[/tex]
[tex]= \cos^2(x) - \sin^2(x)\\= \cos^2(x) - (1 - \cos^2(x))\\= \cos^2(x) - 1 + \cos^2(x)\\= 2\cos^2(x) - 1[/tex]
Suppose you decide to run at least 7.5 miles per week during the week to train for the cross-country season in the fall. During one week, you run 2 miles on Sunday and 2.5 miles on Wednesday. How many more miles, m, do you need to run before the week is over? *
Given :
You decide to run at least 7.5 miles per week during the week to train for the cross-country season in the fall.
During one week, you run 2 miles on Sunday and 2.5 miles on Wednesday.
To Find :
How many more miles, m, do you need to run before the week is over.
Solution :
Total number of miles we travelled till Wednesday :
t = miles run on Sunday + miles run on Wednesday
t = 2 + 2.5 miles = 4.5 miles.
Now, number of miles remaining :
R = Total target - t
R = 7.5 - 4.5 miles
R = 3 miles.
Therefore, we need to run 3 more miles before the week is over.
Hence, this is the required solution.
HELPP 5 POINTS Here's a graph of a linear function. Write the equation that describes that function.
Express it in slope-intercept form.
Step-by-step explanation:
m = (y2-y1)/(x2-x1)
m = (4-0)/(0-(-8))
m = 4/8
y = mx + c
4 = (4/8)(0) + c
c = 4
Thus, the equation is y = (4/8)x + 4
Tim made 10 baskets during a basketball game. Each basket was worth either 2 or 3 points. How many different numbers could represent the total points scored by Jordan?
The total point is an illustration of arrangements
There are 6 different numbers that could the total points scored by Jordan
How to determine the number of total points?The different number (n) that can represent the total point is calculated as:
n = 2 points + 3 points + 1
Remove the units
n = 2 + 3 + 1
Evaluate the sum
n = 6
Hence, there are 6 different numbers that could the total points scored by Jordan?
Read more about arrangements at:
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Find the value of x: 4/5 (x+7) =20
(4/5 is a fraction not a division)
Answer: 18
Step-by-step explanation:
How do I put things in standard notation? Please explain :(
Answer:
[tex]in standard notation \: 9 { \times 10}^{ - 4} = 0.0009[/tex]
How many triangles can be constructed with side lengths of 1.8 cm, 3.4 cm, and 5.6 cm?
0
1
more than one
Answer: One triangle
Step-by-step explanation:
-The triangle's dimensions are defined and fixed.
-Given the fixed dimensions, only one unique triangle can be constructed.
-Hence, only one triangle of the dimensions 7.2cm, 6.9cm and 12.8 cm can be formed.
Answer:
1
Step-by-step explanation:
The correct shape would be a scalene triangle, which can't be bent and twisted and still have the same side lengths.
Convert 14x + 6y = 36 to Y intercept form.
Answer:
0,6
Step-by-step explanation:
Answer: Y= -7/3x + 6
30 points! This table shows how long it took five students to complete their science projects.
Which measure(s) of central tendency represents the average time it took each student to complete a project?
A. the mean
B. the median
C. the mode
D. the mean and the median
Answer:
the mean
Step-by-step explanation:
mean is calculated average
Answer:
A: the mean
Step-by-step explanation:
Sorry for this very late response, but if anyone wasn't sure if answer A is correct, it is. I can confirm this because I just took the test, I hope I could help! (:
it is 3,896 miles round trip to craig´s aunt house.If he travels to her house 8 times this year how many miles did he travel in all?
Answer:
31,168 miles
Step-by-step explanation:
3,896 x 8 = 31,168
Number line, and point Y partitions line XZ into two parts so that the ratio of the length of line segment XY to the length of line segment YZ is 1:4. The coordinate of X is 1.3, and the coordinate of Y is 3.8. What is the coordinate of Z? Show all work
Answer:
13.8
Step-by-step explanation:
If Points X and Z are on a number line and point Y partition line XZ into two parts where XY: YZ = 1:4, this can be expressed as;
XY/YZ = 1/4
cross multiply;
YZ = 4XY
Also, if the coordinate of X is 1.3, and the coordinate of Y is 3.8, then the distance XY will be expressed as XY = 3.8 - 1.3
XY = 2.5
YZ = 4(2.5)
YZ = 10
Since Y is at 3.8 and YZ is 10, then coordinate Z will be YZ + Y
coordinate of Z = 10+3.8
coordinate of Z = 13.8
A bird flew from a point on the ground directly to the edge of the roof of a building. The
height of the building is 70 feet, and the angle of elevation the bird's flight path made with the
ground is 30°. What is the total distance the bird flew in feet?
The total distance the bird flew in feet is 140 feet
Angle of elevation and depressionGiven the following parameters
The angle of elevation = 30 degrees
Height = 70 feet
Requiredtotal distance the bird flew in feet (D)
Using the SOH CAH TOA identity
sin 30 = 70/D
D = 70/sin30
D = 140eet
Hence the total distance the bird flew in feet is 140 feet
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Find the length of the missing side of the right triangle.
Since this is a right triangle, we can use the Pythagorean theorem to find the hypotenuse of length 'c'.
[tex](length-of-leg1)^2+(length-of-leg2)^2=(length-of-hypotenuse)^2\\15^2+36^2 =c^2\\c = \sqrt{15^2+36^2} \\c= 39[/tex]
Thus c equals 39.
Hope that helped!
A truck whose bed is 8.5 feet long, 5 feet wide, and 3.5 feet high is delivering sand for a sand sculpture competition. How many trips must the truck make to deliver 400 cubic feet of sand?
Answer:
The truck will need to make 3 trips.
Step-by-step explanation:
First, we need to find the volume that the truck can carry. Using the dimensions of the truck and the volume formula, we have:
[tex]V=lwh\\V=8.5\times5\times3.5\\V=148.75\text{ ft}^3[/tex]
Since we need to move a total of 400 cubic feet, we will divide that amount by the truckload capacity (volume).
[tex]400 \div 148.75 \approx 2.689[/tex]
In context, he will need to take three truck loads: two loads will be full, and the third will not be full.
13+2(5x-6)=5(x-1)+2x
Answer:
x=-3
Step-by-step explanation:
hoping that it will help you
Need help finding the missing side of each triangle?
Ava and her three friends went out for lunch. Their total bill was $96. If each person paid the same amount, how much would each person pay?
$______
Answer:
$24
Step-by-step explanation:
Ava + her 3 friends = 4 people total.
The bill was $96
To split this evenly among 4 people we can divide the bill by 4.
96/4 = 24
Therefore each person would pay $24.
Hope this helps! :)