Answer:
Step-by-step explanation:
-4 is really -1 * 4
-4² = -1 * 4²
-4² = -1 * 16
-4² = -16
Use parenthesis to square
(-1 * 4)² = (-4)²
(-4)² = 16
use the diagram to find the value of x and y
Answer:
x = 6
y = 15
Step-by-step explanation:
We can find the value for x and y using similarity ratio
8/12 = 10/y cross multiply expressions
8y = 120 divide both sides by 8
y = 15
12/(x+12) = 10/15
180 = 10x + 120 subtract 120 from both sides
60 = 10x divide both sides by 10
6 = x
Given that the area of the trapezoid is 55cm find x
Answer: The value of x is 13.
Step-by-step explanation:
Area of trapezoid = [tex]\dfrac{1}{2}\times\text{sum of parallel sides}\times\text{height}[/tex]
Here , Parallel sides = 9 cm , x cm
Height (Altitude ) = 5 cm
Area = 55 sq. cm
Substitute all values in the formula , we get
[tex]55=\dfrac12\times{(9+x)}\times5\\\\ \dfrac{2\times55}{5}=9+x\\\\ 22=9+x\\\\ x=22-9\\\\ x=13[/tex]
Hence, the value of x is 13.
Do the side lengths 7, 20 and 21 form a right triangle?
==============================================
Work Shown:
a^2+b^2 = c^2
7^2+20^2 = 21^2
49+400 = 441
449 = 441
We end up with a false equation, so the original equation is false for those a,b,c values.
By the pythagorean theorem converse, we do not have a right triangle.
Because a^2+b^2 > c^2, this triangle is acute.
Find the equation for the line with
the given properties
perpendiculor to the line 7x-5y=9
containing the point (-2,-1)
Answer:
y = -0.14286x + 1.2857
Step-by-step explanation:
Don't really know how to explain over a computer, but it is correct. Answer from Omnicalculator.
Hope that this helps!
9514 1404 393
Answer:
5x -7y = -3
Step-by-step explanation:
The equation of the perpendicular line can be written using the given equation as a starting point. Swap the x- and y-coefficients and negate one of them. In standard form, the x-coefficient must be positive.
Find the new constant by using the x- and y-values of the given point.
-7x -5y = 9 . . . . given equation
-5x -7y = c . . . . equation with coefficients swapped
5x -7y = c . . . . . equation with swapped coefficients, x-coefficient negated
5x -7y = c = 5(-2) -7(-1) = -10 +7 = -3
The equation of the perpendicular line is ...
5x -7y = -3
I need help please!!!
Answer:
1
Step-by-step explanation:
Answer:
log x^2 sqrt(y)
Step-by-step explanation:
1/2 log y + 2 logx
We know that a log b = log b^2
log y^ 1/2 + log x^2
We know that log a + log b = log (ab)
log x^2 y^ 1/2
log x^2 sqrt(y)
2.A ball is pulled out of a bag on the first pick. Then, it
is replaced in the bag and another ball is picked out . Independent or dependent ?
Answer:
Independent
Step-by-step explanation:
Since the ball is replaces, the same number of balls and type of balls are in the bag. The draw is identical to the first draw so the draws are independent.
HELP HELP HELP HELP HELP
Answer:
C
Step-by-step explanation:
7x+ 11x=90
because the whole angle is
90 which makes it the answer Wich make the X a number we don't know what it is but know it helps make the exaction =90
Answer:
option c is correct
Step-by-step explanation:
7x + 11x =90 degree (being perpendicular)
18x=90
x=90/18
x=5
I need help plzzzzzz like ASAP
Step-by-step explanation:
Angles in a triangle add up to 180° and angles on a straight line add up to 180° with this information we can solve this problem.
180° - 95° = 85°
Now you have two of the angles, which means all you have to do to find the x is add your two angles up and take them away from 180°.
85° + 60° = 145°
180° - 145° = 35°
Answer:
B
Step-by-step explanation:
im not really sure how to solve for y here
Answer:
Step-by-step explanation:
Cross multiply. When you have two fractions set equal to each other, you can cross multiply to solve.
5(3y - 8) = 12y and
15y - 40 = 12y and
3y = 40 so
y = 40/3, choice A.
Which one is the correct answer above?
If Adrian were to spin the spinner 400 times, how many times could he
expect to get yellow? Use theoretical probability.
Answer:
c
Step-by-step explanation:
What method would be best to solve this equation
0.4x^2=3.5x
-Quadratic formula
-Factoring
-Completing the square
Answer:
Quadratic formula
Step-by-step explanation:
Quadratic formula is the best when solving a quadratic equation.
please help guys
I will be helping u in the days to come n follow u for sure
Answer:
I'd 7587163850
Pass 123456
Join
Answer:
Step-by-step explanation:
[tex]\frac{cot \theta}{cosec \theta + 1} = \frac{cosec\theta -1} {cot \theta}[/tex]
[tex]L H S[/tex]
[tex]\frac{cot \theta }{cosec \theta + 1 } \times \frac{cosec \theta - 1}{cosec \theta -1}[/tex] [tex][ \ multiplying \ and \ dividng \ by \ (cosec \theta - 1) \ ][/tex]
[tex]= \frac{cot \theta \times (cosec \theta - 1)}{(cosec ^2\theta -1)}[/tex] [tex][ \ (a -b)(a+b) = a^2 - b^2 \ ][/tex]
[tex]= \frac{cot \theta \times (cosec \theta - 1)}{cot^2 \theta}\\ \\[/tex] [tex][ \ cosec^2\theta - 1 = cot^2 \theta \ ][/tex]
[tex]= \frac{cosec \theta - 1 }{cot \theta} \\\\= RHS[/tex]
Please solve both with explanation, I’ll give brainliest
1st and 2nd pictures are for finding area and 3rd picture is for finding perimeter
hope you understood well and if not and you can ask again
Trey left his house on his bike and rode 6 miles north, rested then rode 8 miles east. How far is he from his house?
Answer:
10
Step-by-step explanation:
need help. will mark brainliest if correct
I have no idea how to do this math, please help.
Answer:
it does verify Thays its equal too PQRS
How many real solutions does the quadratic equation
have?
10x^2– 5x – 7 = 0
1. 2
2. 0
3. 1
4. 3
Answer:
Option 1: 2
Step-by-step explanation:
see the plotting (made with desmos)
note that 3 is impossible, because a quadratic equation can't have 3 real zeros
What is the probability of rolling a multiple of 3 on a standard number cube? Write your answer in the simplest form.
Each month Judy and jills cupcake shop pays $1850 in monthly expenses . They need to make at least as much as they spend each month. Which inequality shows, x, the amount of money they need to make it each month
Answer:
x is greater than or equal to 1850
Step-by-step explanation:
This is because they need to make AT LEAST this much.
Answer:
I ned help
Step-by-step explanation:
if it’s possible could anyone do atleast question 11, 13, and 16 for me? so i can understand how to do them! sorry if it’s a lot!!
(Trigonometry) The ladder leaning against a building makes an angle of 78° with the ground. The foot of the ladder is 5 feet from the building. How many feet long is the ladder? Round your answer to the nearest whole number. (Hint: DRAW A PICTURE)
1
It takes a tree 5 years to grow 3 feet. At this rate, how much will the tree grow in 30 years?
Answer:
[tex]5 \: years = 3 \: feet \\ 30 \: years = ( \frac{30 \times 3}{5} ) \: feet \\ = 18 \: feet[/tex]
pls anyone that can help
A. 34cm
Hope this helps! :)
Answer:
I think it’s b but I’m not 100% sure tho…
Here's an equation of a line:
y - 4x = 4
Which of the following is the equation of a line
that is parallel?
Click on the correct answer.
4y + x= -8
y + 4x = 1
2y – 8x = -5
- 4y + x= -8
Step by step explaination
y-4x= -4
y= 4x-4
slope of the given eqn of line = 4
and since the required line is parallel to the given line , slope of required line = slope of the given eqn of line = 4
OPTION C , the eqn has slope = 4
Karen exchanged BDS$2000 and received EC$2700. How much is the value of one BDS$ in EC$
Answer:
Bds$ 1 EC$ 1.34
Step-by-step explanation:
Kelly is flying a kite. She staked the kit to the ground. The angle of elevation between the string and ground is 70˚. The string on the kite is 65 meters long. How far is the kite above the ground? (Round to two decimal places)
Answer:
Step-by-step explanation:
Abby has $500 in her savings account. She earns simple interest at 5% per annum. Calculate the interest she earns after two years
Answer:
50$
Step-by-step explanation:
5% of 500=25
If you earn 25 per year then in two years you will earn
25+25=50$
Find the greatest common factor of 14a and 11a^2
Answer:
a
Step-by-step explanation:
Ashton plans to put a fence around his circular garden. When Ashton walks from one side of the garden to the other, through the middle, it is 7.5 metres. Fencing is sold in 1m pieces and costs $8.99 per meter. Find the circumference of the garden. How much will it cost for Ashton's new fence? 2.
Answer:
Circumference: C = 7.5π m. This is approximately 23.56 m
Total fencing cost: $215.76
Step-by-step explanation:
Ashton walks along the diameter of the garden, which is 7.5 m.
The circumference formula C = πd yields C = 7.5π m. This is approximately 23.56 m, which we must round up to 24 m, and which calls for 24 - 1 m pieces at $8.99 each.
The desired fencing would cost (24 m)($8.99/m), or $215.76
