Answer: 75°
have: m∠3 = m∠11 = m∠22 = 105°
but m∠22 + m∠21 = 180°
=> m∠21 = 180° - 105° = 75°
Step-by-step explanation:
Help me pleaseeee!!!
Solve the equation -3x^2+2x+4= -x-3 by writing a linear-quadratic system and solving using the intersection feature of a graphing calculator. Round to the nearest hundredth
A. x= -2.44 and x=3.12
B. x=-1.63 and x=4.44
C. x=-1.11 and x=2.11
D. x=-2.61 and x=0.42
Answer: i did c when i had the same question but it was just a guess
Step-by-step explanation:
The solution of an equation is x= -1.11 and x = 2.11.
What is a Quadratic equation?A polynomial equation of the second degree is quadratic, which means that at least one of its terms must be squared. Quadratic equations are another name for it. The quadratic equation generally looks like this:
ax² + bx + c = 0, where x is a numerical coefficient and a, b, and c are unknown variables.
Given equation -3x² + 2x + 4 = -x - 3
simplify the equation we get
3x² - 2x - 4 -x -3 = 0
3x² - 3x - 7 = 0
The equation is solved by the Quadratic formula
x = (-b ± [tex]\sqrt{b^{2} - 4ac }[/tex])/2a
a = 3, b = -3, c = -7
x = [-(-3) ± [tex]\sqrt{(-3)^{2} - 4(3)(-7)}[/tex]]/2(3)
x = (3 ± 9.643)/6
taking positive sign
x = 12.643/6 = 2.1072 = 2.11
taking negative sign
x = -6.643/6 = -1.1072 = -1.11
Hence the values of x are -1.11 and 2.11
Learn more about Quadratic equations;
https://brainly.com/question/1863222
#SPJ2
2037 + 135.5x = 5560 what is x?
Answer:
x=26
Step-by-step explanation:
Use the table to answer the following question. What is an equation that describes this relationship?
The equation that describes the relationship is option A. y = 8 - 7x.
What is Slope?Slope of a line is the ratio of the change in y coordinates to the change in the x coordinates of two points given.
Given are the values of x and y.
x : 0 1 2 3
y : 8 1 -6 -13
Equation of a line can be written as y = mx + d in slope intercept form.
m is the slope and d is the intercept along Y axis.
Slope of a line with two points (x, y) and (x', y') is,
Slope = (y' - y) / (x' - x)
Consider the points (0, 8) and (1, 1).
Slope, m = (1 - 8) / (1 - 0) = -7 / 1 = -7
Since we already have the point (0, 8), y intercept, d = 8.
Substituting these, we get the equation of line as,
y = -7x + 8 or
y = 8 - 7x
Hence the equation of the line is y = 8 - 7x.
Learn more about Slope here :
https://brainly.com/question/29027297
#SPJ5
Drag the tiles to the boxes to form correct pairs. Not all tiles will be used.
Ratio Conversion Table
mile : yard 1 : 1,760
yard : foot 1 : 3
foot : inch 1 : 12
Using the conversion table, match the equivalent measurements.
2 miles
0.2 miles
372 feet
348 inches
124 yards
352 yards
1,016 yards
10,560 feet
29 feet
PLEASE HELP WILL GIVE TOP MARKS TO FIRST ANSWERER!
The correct choices are 29 feet = 348 inches, 352 yards = 0.2 miles, 372 feet = 124 yards, and 2 miles = 10560 feet.
What is unit conversion?It is defined as the conversion from one quantity unit to another quantity unit followed by the process of division, and multiplication by a conversion factor.
We have the ratio conversion table given.
mile: yard = 1: 1,760
yard: foot = 1 : 3
foot: inch = 1: 12
From the given conversion table:
29 feet = 29×12 inches
29 feet = 348 inches
Similarly,
352 yards = 0.2 miles (1 yard = 1,760 miles)
372 feet = 124 yards
2 miles = 10560 feet
Thus, the correct choices are 29 feet = 348 inches, 352 yards = 0.2 miles, 372 feet = 124 yards, and 2 miles = 10560 feet.
Learn more about the unit conversion here:
brainly.com/question/14350438
#SPJ1
PLEASEEEEE HELPPPPP ASAPPPP
Answer:
y=4/-5x+2
Step-by-step explanation:
Slope is rise over run so if you start at one of the points given and go up 4 and to the left 5 you get the next point. Y-intercept is 2 where the line crosses the y line.
i need help to solve please
Answer:
The picture cuts off the rest of he question please take another.
Step-by-step explanation:
8/0
Undefined, positive, negative, zero ?
Answer:
undefined
Step-by-step explanation:
PLEASE HELP!
Compare the two expressions using <, >, or =. For each, explain how you can determine the answer without calculating.
1. 100 x 8 ____ 25 x (4 x 7)
2. 36 elevens ____ 40 elevens - 3 elevens
3. 12 x 24 ____ 6 twenty fours, doubled
Answer:
1. >
2. <
3. =
Step-by-step explanation:
100x8=800, 4*7=28, multiplied by 25 is 700, therefore making 800 greater than 700. Whenever comparing two multiplication problems, multiplying large numbers produces large results, so whichever starts larger will have an end result that is larger. 100 was large and it is smaller to its counter 25.
36 elevens really means 11x36, which is 396. 40 elevens really means 40x11, which is 440 minus 11x3 which is 407. 407 is greater than 396. The same logic applies here as the previous answer, the only difference is that the removal of three elevens is still larger than 36 elevens in this case.
12x24=288, 6x24=144, doubled makes it 288. In this case, the six is half of the twelve to begin with and then is made up for later by the fact that it is doubled.
When I solve math questions like these, I ignore the fact that it doesn't want a mathematical answer, do the math anyway and pull logic from it. (If your teacher checks, do it on a separate piece of paper, and then toss it.)
Need help ASAP! Tysm will mark brainliest
Answer:
80 inches
Step-by-step explanation:
Formula: 2l + 2w = perimeter
Solve the proportion
please help im super behind and trying to get caught up
Answer:
x = -9
Step-by-step explanation:
multiply 2 on both sides which cancels out the 2 in the fraction and then do -1 times 2 and 2 times x (which is just 2x). After doing that your equation should look like 3x + 7 = 2x - 2
Collect your like terms (the numbers with an x variable go togther and the ones with an x have to be together) and rearrange it so it looks like: 3x - 2x = -2 - 7 after you have this written subtract 3 from 2 now because they're on the same side which leaves you with x (usually we leave out the one because it doesn't make a difference) so now you're left with x = -2 - 7 for this step subract -2 from 7 which leaves you with x = -9
Steps:
3x + 7 = 2x - 2
3x - 2x = -2 -7
x = -2 - 7
x = -9
Joshua went kayaking. It cost him $ 15 to rent the kayak. It also cost $ 6 for each hour spent on the lake kayaking. Joshua spent 2 $\frac{1}{2}$
1
2 hours on the lake. How much was his total bill for the kayak rental and hours kayaking on the lake?
Step-by-step explanation:
The total bill will be the sum of the rent and the cost for the total time spent.
$15 + $6 * 2.5
$15 + $15
$30
PLZ HELP HURRY !!!!!!
Answer:
d
Step-by-step explanation:
HELP ME ASAP!! I WILL TRY TO MARK YOU
Answer:
d
Step-by-step explanation:
I divided it and looked at your answers
Please help :))) and explain how to do it if you can but if you can’t it’s fine
Step-by-step explanation:
yfttuo yfttuo p9ntknknt8oy9uy
For lunch, a restaurant discounts prices on their menu by 15% and then applies a
10% sales tax to the discounted price. If Jade pays $18.70 after the discount and
sales tax are applied, what was the price of Jade's lunch on the menu?
A $17.48
B $19.35
C $19.68
D $20.00
Answer:
It would be D
Step-by-step explanation:
If you do the problem backward and apply the discount and taxes to 20$, then you get 18.70
The price of Jade's lunch on the menu will be;
⇒ $17.05
What is mean by Percentage?
A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.
Given that;
For lunch, a restaurant discounts prices on their menu by 15% and then applies a 10% sales tax to the discounted price.
And, Jade pays $18.70 after the discount and sales tax are applied.
Now,
Let the price of Jade's lunch on the menu = x
Since, A restaurant discounts prices on their menu by 15%.
Hence, The discounted price = x - 15x/100
And, Then applies a 10% sales tax to the discounted price.
Hence, The price = 10% of (x - 15x/100) + x
= 10/100 × 85x/100 + x
= 850x/10000 + x
= 17x/200 + x
= 217x/200
Since, Jade pays $18.70 after the discount and sales tax are applied.
Hence, We get;
⇒ 217x / 200 = 18.50
⇒ x = $17.05
Thus, The price of Jade's lunch on the menu will be;
⇒ $17.05
Learn more about the percent visit:
https://brainly.com/question/24877689
#SPJ2
Hillary is sharing a box of candy with her friends. If there are b pieces of candy in the box being split between 5 people, which expression shows how many pieces of candy each person should get?
Answer: C
Step-by-step explanation:
Basically you have your candy and you split it up, which is dividing, and give the groups of candy to your friends.
Find the slope of the line that passes through (2,2) and (9,10)
Answer: you just take the first set of points and subtract the second from it.
Step-by-step explanation: 2-9=-7 and 2-10=-8
the new set would be (-7,-8) hope this helps
Jack works after school. Each day he is paid a set amount, plus an hourly wage.
Hours 1 1.5 2 2.5 3
Pay 18 23 28 33 38
Assume Jack works from 2:30 P.M. to 7:00 P.M. Using the function f(x) = 10x + 8, how much would he earn?
A. $33
B. $35.50
C. $45
D. $53
Answer:
B.35.50
Step-by-step explanation:
A man is standing next to a 24 foot tree. the man is 7 feet tall with a shadow of 3 feet. how long is the shadow of the tree
Answer:
First we divide 24 by 7.
24÷7=3.42
now we multiply 3.42 by 3 since that was the length of the mans shadow
3.42x3=10.26
The trees shadow is 10.26 feet long.
By the way, that is a very tall man
Step-by-step explanation:
Can you please answer questions 3 and 7
Answer:
3 and 7 of what?
Step-by-step explanation:
A tanker truck fills the gas station's reservoir at the rate of 1212 gallons per minute. If the reservoir was empty and it is now 35 gallons full, how long has the tanker been filling the reservoir? Round your answer to the nearest tenth. Enter your answer in the box.
Answer:
2.9 minutes
Step-by-step explanation:
Given
[tex]Rate = 12 gallon/minute[/tex]
[tex]Size = 35\ gallon[/tex]
Required
Determine the time spent
The rate is a ratio of size to time
So, it can be expressed as:
[tex]Rate = \frac{Size}{Time}[/tex]
Substitute values for Rate and Size
[tex]12 = \frac{35}{Time}[/tex]
Cross Multiply
[tex]12 * Time = 35[/tex]
Solve for Time
[tex]Time = 35/12[/tex]
[tex]Time = 2.9[/tex] (approximated)
can somebody help me out
Answer:
dufenschmertz evil incorporated...
Step-by-step explanation:
after hours ;)
help with this please i suck at math
Answer:
You're asked to find the cube root of 125.
That is,to cancel the power of y, you'd have to cube root both sides.
answer is 5
Three times the sum of four and a number is twice the number.
Answer:
24
Step-by-step explanation:
Answer:
Step-by-step explanation:
Three times four = 12
And if the second number is 2 then
12 x 2 = 24 which is twice of 12
Which expressions are equal to 763? i just dont want to do it
189 + 674
247 + 516
628 + 145
435 + 328
Helppppppppppppppppppp
what's the answer to 7x-x
Answer:
6x
Step-by-step explanation:
7x - x
X by itself is the same thing as 1x.
So, if we rewrite the equation using 1x instead of just x:
7x - 1x
Now, we can subtract like we normally would.
7x - 1x = 6x
its showing up as weird stuff so the question is below
Which expression is equivalent to
Answer:
A 84x-16y-10.6
Step-by-step explanation:
Answer:
1. 84x-16y-10.6
Step-by-step explanation:
2(14x-3y+28x+12.2-5y-17.5) = 2(42x-8y-5.3)
Add up like terms.
2(42x-8y-5.3) = 84x-16y-10.6
Expand.
What is the answer for number 1?
Answer:
A
Step-by-step explanation:
x only can have 1 function