f(x) = 10x - 7 what is f (0)
is this a right triangle?
The only way to really tell is to check it with the Pythagorean Theorem.
The Pythagorean Theorem describes every right triangle, and every triangle that fits the Pythagorean Theorem has a right angle in it. Guaranteed. This is incredibly handy.
If this IS a right triangle, then
(one leg squared) + (the other leg squared) = (the hypotenuse squared) .
Let's check it out:
-- One leg squared = (11 cm)² . That's 121 cm² .
-- The other leg squared = (√99 cm)² . That's 99 cm² .
-- Their sum is (121 + 99) cm² . That's 220 cm² .
-- The hypotenuse squared is (15 cm)² . That's 225 cm² .
Is 220 cm² equal to 225 cm² ?
NO ! They are not equal. They are different !
The sum of the squares of the legs is NOT equal to the square of the hippopotamus.
==> This triangle does NOT fit the Pythagorean Theorem.
==> It is NOT a right triangle.
(The angle in the bottom corner is slightly bigger than 90°. But you can't tell by looking at it. It's so close that you can only tell by checkoing the lengths againt the Pythagorean Theorem.)
Please use method of substitution numbers 9;10;11;12
Answer:
1. x = 1, y = 2.
12. x = 1, y = -3.
Step-by-step explanation:
I won't do all these for you, just the first and the last. The method is similar for all 12.
1.
y = x + 1
x + y = 3
Substitute y = x + 1 into the second equation:
x + y = 3 so:
x + (x + 1) = 3
2x + 1 = 3
2x + 1 -1 = 3 - 1
2x = 2
x = 1.
Now substitute x = 1 into the first equation to get the value of y:
y = x + 1
y = 1 + 1
y = 2.
12.
4x = y + 7
3x + 4y + 9 = 0
Solve for y in the first equation:
4x = y + 7 Subtract 7 from both sides of the equation:
4x - 7 = y + 7 - 7
y = 4x - 7.
Now substitute y = 4x - 7 in the second equation:
3x + 4y + 9 = 0 so:
3x + 4(4x - 7) + 9 = 0
3x + 16x - 28 + 9 = 0
19x - 19 = 0
19x - 19 + 19 = 0 + 19
19x = 19
x = 19/19 = 1.
Now substitute x = 1 in the first equation:
4x = y + 7
4*1 = y + 7 Subtract 7 from both sides of the equation:
4 - 7 = y + 7 - 7
-3 = y.
I NEED HELP ASAP, ITS DUE TODAY
USE BASIC PROPERTIES TO SOLVE THE EQUATIONS
8(16+24)=8(16)+8m
8(4x)=(8 times 4)100
Choose values for a, b, and c to show that a Distributive property for addition over multiplication, a+(b times c)=( a + b) times ( a + c), does not hold true for all whole numbers
x/42=15/7? proportion
Answer: x=90
Step-by-step explanation: Okay let's see! Let's solve your equation step-by-step.
x
42
=
15
7
Step 1: Cross-multiply.
x
42
=
15
7
x*(7)=(15)*(42)
7x=630
Step 2: Divide both sides by 7.
7x
7
=
630
7
x=90
Answer:
x = 90
Step-by-step explanation:
7x = 42 * 15 = 630
x = 630/7
x = 90
1.Inverso aditivo de -7
2. Inverso aditivo de -6
Answer:
1. 7
2. 6
Step-by-step explanation:
An inverse additive is a number that when added to its additive inverse equals 0. So, in this case -7 +7 = 0 and -6 +6 = 0.
Find the value of x.
to
33°
38
Plz help
For her cellular phone service, Kinsley pays $40
plus $15 per gb of data. Write an expression to
represent the amount of money Kinsley
spends for g gb of data.
-2 (x+3)+5x=-39 simplify answer
Answer:
x=-11
Step-by-step explanation:
-2(x+3)+5x=-39
Remove parenthesis
-2x-6+5x=-39
Collect like terms
3x-6=-39
Move the constant to the right
3x=-39+6
Calculate
3x=-33
Divide both sides by 3
x=-11
Doug dives from a platform that is 7.5 meters above water. His dive takes him 2.4 meters below the surface of the water. How far does Doug's dive take him.
Answer:
9.9 meters
Step-by-step explanation:
7.5+2.4=9.9 meters
What is the value of x 2/3-1=11.
Answer:
18
Step-by-step explanation:
I need help with number 13.
Answer:
Angle of CBD is 34 degrees
Step-by-step explanation:
[tex]Angle CBD + 45 = 79[/tex]
Subtract 45 on both sides
AngleCBD = 34
solve for k 4.5+1.5k=18−3k
Answer:
[tex] \boxed{ \bold{ \huge{ \boxed{ \sf{k = 3}}}}}[/tex]
Step-by-step explanation:
[tex] \sf{4.5 + 1.5k = 18 - 3k}[/tex]
Move 3k to left hand side and change it's sign
Similarly, move 4.5 to right hand side and change it's sign
[tex] \longrightarrow{ \sf{1.5k + 3k = 18 - 4.5}}[/tex]
Collect like terms
[tex] \longrightarrow{ \sf{4.5k = 18 - 4.5}}[/tex]
Subtract 4.5 from 18
[tex] \longrightarrow{ \sf{4.5k = 13.5}}[/tex]
Divide both sides by 4.5
[tex] \longrightarrow{ \sf{ \frac{4.5k}{4.5} = \frac{13.5}{4.5} }}[/tex]
Calculate
[tex] \longrightarrow{ \sf{k = 3}}[/tex]
Hope I helped!
Best regards! :D
Answer:
k = 3
Step-by-step explanation:
Subtract 4.5 from both sides:
4.5 + 1.5k = 18 - 3k
-4.5 -4.5
1.5k = 13.5 -3k
Subtract -3k from both sides:
1.5k = 13.5 - 3k
+3k +3k
4.5k = 13.5
Now simplify:
4.5k = 13.5
k = 3
what is the first step of 2x - 6 = 10
Answer: you would add 6 to 10
Step-by-step explanation: you’re trying to isolate the x so you add 6 to the other side
A parallelogram has a base of 10 centimeters and a height of 4 centimeters. What is the area of the parallelogram?
Step-by-step explanation:
Area of a parallelogram=base×height
=10×4
=40cm^2
The area of the parallelogram is 40 square cm if the parallelogram has a base of 10 centimeters and a height of 4 centimeters.
What is parallelogram?In two-dimensional geometry, it is a plane shape having four sides, in which two pairs of sides are parallel to each other and equal in length. The sum of all angles in a parallelogram is 360°.
It is given that:
A parallelogram has a base of 10 centimeters and a height of 4 centimeters.
As we know:
Area of a parallelogram = base×height
Area of a parallelogram = 10×4
Area of a parallelogram = 40 square cm
Thus, the area of the parallelogram is 40 square cm if the parallelogram has a base of 10 centimeters and a height of 4 centimeters.
Learn more about the parallelogram here:
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Charlie runs a screen printing company and is resetting a machine he uses to print triangular banners. He knows the amount of material he needs for the banner as well as the height of the triangle, but he needs to set the machine to a new measurement for the triangle’s base. To help Charlie determine the new measurement, rewrite the standard formula for the area of a triangle, A = bh, to solve for the base, b. Enter the correct answer in the box.
Answer:
b= 2a/h
Step-by-step explanation:
The new measurement can be obtained by the formula b = 2A/h the answer is b = 2A/h
What is the triangle?In terms of geometry, the triangle is a three-sided polygon with three edges and three vertices. The triangle's interior angles add up to 180°.
We have:
Charlie runs a screen printing company and is resetting a machine he uses to print triangular banners.
Given:
A = bh/2
Make subject as b
2A = bh
b = 2A/h
Thus, the new measurement can be obtained by the formula b = 2A/h the answer is b = 2A/h
Learn more about the triangle here:
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When you write a
decimal as a fraction, how do you know what
number to use for the denominator?
how to evaluate p/4 + pq when p=8 and q=6
Answer:
50
Step-by-step explanation:
(8)/4+(8)(6)
2+48
50
Answer:
Step-by-step explanation:
8/4 + (8)(6)
2 + 48 = 50
Solve 2(x + 1) + 4 = 8
Answer: X=1
Step-by-step explanation:
2( x+1) +4=8
2x+2+4=8
2x+6=8
2x=8-6
2x=2
Divide both sides by 2
x=1
~~~~Inuola1234
lmk if you need me to explain further
Answer:
x=1
Step-by-step explanation:
Pls halp due today >_<. Thank you
Answer:
12 and 13
Step-by-step explanation:
12•12=144
And
13•13=169... but there is no whole number in between can equal 150
And btw is that big ideas bc I used to use that lol... Hope this helps!!
Solve 9x2 + 6 = 12x
1. 1 plus or minus i square root 10
2. the quantity of 2 plus or minus i square root 10 all over 3
3. the quantity of 2 plus or minus i square root 2 all over 3
4. 1 plus or minus i square root 2
Step-by-step explanation:
9x² + 6 = 12x
3x² + 2 = 4x
3x² − 4x + 2 = 0
Use quadratic formula.
x = [ -b ± √(b² − 4ac) ] / 2a
x = [ -(-4) ± √((-4)² − 4(3)(2)) ] / 2(3)
x = [ 4 ± √(16 − 24) ] / 6
x = [ 4 ± √(-8) ] / 6
x = (4 ± 2i√2) / 6
x = (2 ± i√2) / 3
What is the the simplified form of the following expression? 5(t-1)
A t + (-5)
B 6t
C 5t + (-5)
D 5t + (-1)
The perimeter of a regular pentagon is 41.5 cm. Write and solve an equation to determine the length of each side of the pentagon.
Answer:
41.5÷5= the answer 8.3 cm
R(9, 7) and S(3,9) are the endpoints of a line segment. What is the midpoint M of that line
segment?
Write the coordinates as decimals or integers.
M=
Answer:
MP=(6,8)
Step-by-step explanation:
[tex]MP= (\frac{x_1+x_2}{2} )(\frac{y_1+y_2}{2} )\\MP= (\frac{9+3}{2} )(\frac{7+9}{2})\\MP= (\frac{12}{2} )(\frac{16}{2} )\\MP= (6,8)[/tex]
find three consecutive even integers if the third is 8 less than twice the second
Answer:
8, 10, 12
Step-by-step explanation:
Because they are even there is a whole number x so that (1st)2x, (2nd) 2x+2, and (3rd)2x+4 are the 3 consecutive integers.
so
If the third is 8 less than twice the 2nd then:
3rd = 2 (2nd) - 8
2x + 4 = 2 (2x+2) - 8
2x + 4 = 4x + 4 - 8
2x + 4 = 4x - 4 Add 4 to each side
2x + 4 + 4 = 4x - 4 + 4
2x + 8 = 4x Subtract 2x from each side
2x - 2x + 8 = 4x - 2x
8 = 2x Divide each side by 2
8/2 = 2x/2
8/2 = x
4 = x
No we plug into our equations to find the integers.
2x = 2(4) = 8
2x + 2 = 2(4) + 2 = 8 + 2 = 10
2x + 4 = 2(4) + 4 = 8 + 4 = 12
So our integers are 8, 10, 12
What is the slope of the line 4x – 2y = 5?
Answer:
y =2 x − 5/ 2
uan spent 10 minutes on his history homework and 3 minutes per question on his math homework. Which graph shows the total homework time, t, related to the number of math questions, q? Discrete graph on a coordinate plane shows number of math questions, numbered 1 to 8 along the horizontal axis, and total homework time, numbered 5 to 40, on the vertical axis. Solid circles appear at points (0, 10), (1, 13), (2, 15), (3, 19), (4, 22), (5, 25), (6, 29), (7, 32), (8, 34). Continuous graph on a coordinate plane shows number of math questions, numbered 1 to 8 along the horizontal axis, and total homework time, numbered 5 to 40, on the vertical axis. Solid circles appear at points (0, 10), (1, 13), (2, 15), (3, 19), (4, 22), (5, 25), (6, 29), (7, 32), (8, 34).
Answer:
Graph 1
Discrete graph on a coordinate plane shows number of math questions, numbered 1 to 8 along the horizontal axis, and total homework time, numbered 5 to 40, on the vertical axis. Solid circles appear at points (0, 10), (1, 13), (2, 15), (3, 19), (4, 22), (5, 25), (6, 29), (7, 32), (8, 34).
Kirk finds a dog leash with a price tag of $24 at a pet store.
The leash is 10% off the original price. He must also pay 6%
sales tax. What is the total cost of the leash?
Select one:
00)
$22.90
O.
o
1)
$24.82
O
$21.60
$25,44
The total cost of the leash will be $22.90. The correct option is A.
What is the percentage?The Percentage is defined as representing any number with respect to 100. It is denoted by the sign %. The percentage stands for "out of 100." Imagine any measurement or object being divided into 100 equal bits.
Given that Kirk finds a dog leash with a price tag of $24 at a pet store. The leash is 10% off the original price. He must also pay 6% sales tax.
The cost after 10% off is:-
Cost = 24 - 24 x ( 10 / 100 )
Cost = 24 - 2.4
Cost = 21.6
Total cost after 6% sales tax = 21.6 + ( 21.6 x 0.06)
Total cost after 6% sales tax = 21.6 + 1.296 = $22.9
Therefore, the total cost of the leash will be $22.90. The correct option is A.
To know more about percentages follow
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Perform the indicated row operations:
-10r2 r2 3r3
[2 -1 -4|7] [0 3 -2|5] [0 10 8|2]
Answer:
Second one is -30, 20, -50
Third one is 30, 24, 6
Step-by-step explanation:
Answer:
-30,20,-50
30,24,6
R2+R3-R3
0,44,-44
Step-by-step explanation:
i just did it thats the answers to all of the question after the first question too
Simplify the expression.
3 +22= 2 + 3
Hey there!
ANSWER: [tex]25=5[/tex]EXPLANATION:[tex]3+22=2+3[/tex]
So let's first add 3 + 22.
[tex]3+22=25[/tex]
Now we have to add 2 + 3.
[tex]2+3=5[/tex]
So that means the answer to this is:
[tex]25=5[/tex]
This is false because [tex]25[/tex] is not equal to [tex]5[/tex].
Hope this helps!
[tex]-TestedHyperr[/tex]
