Answer:
14x-21y
Step-by-step explanation:
To evaluate an algebraic expression, you have to substitute a number for each variable and perform the arithmetic operations. This is:
7(2x – 3y)
= 7(2(6) – 3(-2))
= 7(12 + 6)
= 7(18)
= 126Find the number that belongs in the green box.
Round your answer to the nearest tenth.
Answer:
49.4 degrees
Step-by-step explanation:
SOHCAHTOA
tan x = opposite / adjacent
tan x = 7 / 6
using graphing calculator, you get x = 49.398 round to tenth = 49.4 degrees
please give thanks :)
if
[tex] \sqrt[2]{1845} [/tex]
then find the value
[tex]\qquad\bullet\quad {:}\dashrightarrow\rm \sqrt [2]{1845}}[/tex]
[tex]\qquad\bullet\quad {:}\dashrightarrow\rm\sqrt [2]{1845}[/tex]
[tex]\qquad\bullet\quad {:}\dashrightarrow\rm sqrt[345]{2096}[/tex]
Learn more:-fraction rules
[tex]\boxed{\begin{minipage}{6 cm}\bf{\dag}\:\:\underline{\textsf{Fraction Rules :}}\\\\\bigstar\:\:\sf\dfrac{A}{B} + \dfrac{B}{C} = \dfrac{A+B}{C} \\\\\bigstar\:\:\sf{\dfrac{A}{B} - \dfrac{B}{C} = \dfrac{A-B}{C}}\\\\\bigstar\:\:\sf\dfrac{A}{B} \times \dfrac{C}{D} = \dfrac{AC}{BD}\\\\\bigstar\:\:\sf\dfrac{A}{B} + \dfrac{C}{D} = \dfrac{AD}{BD} + \dfrac{BC}{BD} = \dfrac{AD+BC}{BD} \\\\\bigstar\:\:\sf\dfrac{A}{B} - \dfrac{C}{D} = \dfrac{AD}{BD} - \dfrac{BC}{BD} = \dfrac{AD-BC}{BD}\\\\\bigstar \:\:\sf \dfrac{A}{B} \div \dfrac{C}{D} = \dfrac{A}{B} \times \dfrac{D}{C} = \dfrac{AD}{BC}\end{minipage}}[/tex]
100 POINTS BRAINLIEST IF CORRECT!!!!!!!!
Mario's school bus drove forward 225 feet and then went backward for 70 feet. Which of the following statements about the bus are true? Select all that apply.
A.The total change in position is represented by a negative number.
B.The total change in position is represented by a number with a magnitude of 155 feet.
C.The position of the bus is represented by the expression 225 - 70.
D.The direction is represented by a positive number.
Answer:
B
Step-by-step explanation:
The total change in position is represented by a number with a magnitude of 155 feet.
Hope this helps!
xoxo,
cafeology
Jimmy could type 80 words in a minute last week. After training, he can type 100 words now. What is the percentage increase of Jimmy's typing speed?
Answer:
25%
Step-by-step explanation:
100-80=20
80÷20=4
100÷4=25
25%
Question 3 (2 points)
Use the figure below to answer the following questions. Find the measure of each angle.
Answer:
∠ 1 = 70°, ∠ 2 = 140
Step-by-step explanation:
110° and the adjacent angle inside the triangle are supplementary, then
angle = 180° - 110° = 70°
Since 2 sides of the triangle are congruent, then the triangle is isosceles
Thus the 2 base angles are congruent, then
∠ 1 = 70°
The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.
∠ 2 is an exterior angle of the triangle, thus
∠ 2 = 70° + 70° = 140°
does each relation reprsent a fuction? choose yes or no
1.(1,3), (2,5), (2,7), (4,9) yes or no
2.(1,3), (2,5), (3,7), (4,9) yes or no
3.(1,3), (1,5), (1,7), (1,9) yes or no
4.(1,3), (2,3), (3,3), (4,3) yes or no
Answer:
sorry for the questions i am not able to give answer
help plssssss help mewith math ok
Answer: umm jus look up what a histogram is
Step-by-step explanation:
Solve for x.
18 /x =-2
Answer:
X=-9
Step-by-step explanation:
Answer:
x = -9
Step-by-step explanation:
rotation 90° clockwise about the origin
Answer:
point s at (0,5) point t at (5,3) point u at (4,1)
Step-by-step explanation:
happy life
Buddy painted (1/5) of the 320 nutcrackers.How many nutcrackers did buddy paint
Answer:
64
Step-by-step explanation:
Given that,
Buddy painted (1/5) of the 320 nutcrackers.
We need to find how many nutcrackers did buddy paint. It can be calculated by finding (1/5) of 320.
[tex]x=\dfrac{1}{5}\times 320\\\\=64[/tex]
Hence, he painted 64 nutcrackers.
Alejandro is renting a car to visit his cousin for seven days. The rental car company charges him $199 for the week plus $0.32 per mile driven. Alejandro has $350 to spend on the rental car fees. Write an inequality to determine how many miles Alejandro can afford to drive.
Answer:
(199+0.32)minus 350
Step-by-step explanation:
199 is the cost plus fee per mile 0.32 subtract 350 to see if he can afford it
Graph the line y = 7/2x - 5
Answer:
slope: 7/2
y-int: (0, -5)
(0, -5) (10/7, 0)
Bhavesh walked 3 1/8 miles on Saturday and Alana walked 4 3/4 miles how many more miles did Alana walk? A.5/8, B.1 1/2, Or C.1 5/8
Answer:
A-5/8
Step-by-step explanation:
HELP ME PLZZ I NEED HELP WITH THIS!!
Answer:
Divide both sides by 2.
I answered this earlier
Why would anyone delete my answer which was correct.
Given x)= 10-2x, find 8(7).
Step-by-step explanation:
substitute 7 for x so..
(7)=10-2(7)=
10-14
the answer is A. -4
Which of the following examples have a constant rate of change?
You are making meatballs and roll out 30 meatballs then in a half hour and then another 30 meatballs in the next 20 minutes.
An electrician earns $50 the first hour plus $35 for every additional hour.
The number of bacteria triples every hour.
will mark brainliest
Answer:
B/second option
Step-by-step explanation:
The first option is wrong because you make 30 meatballs in 30 mins but then 30 meatballs in 20 mins. If it was constant then in 20 mins you make less meatballs.
The last option is wrong because if bacteria triples, then that is exponential, not constant change.
Only the middle option makes sense. The rate of change is $35 for each hour!
please give thanks by clicking the heart button! :)
The example that has a constant rate of change is
An electrician earns $50 for the first hour plus $35 for every additional hour.
Option B is the correct answer.
What is an equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign.
Example:
2x = 5 is an equation.
We have,
30 minutes = 30 meatballs
20 minutes = 30 meatballs
This is not a constant rate of change.
$35 for every additional hour.
This means,
1 hour = $35
This is a constant rate of change,
Bacteria triples every hour.
This is an exponential function.
Example:
Number of bacteria initially = 2
Number of bacteria after 1 hour = 3 x 2 = 6
Number of bacteria after 2 hours = 3 x 6 = 18
This is not a constant rate of change.
Thus,
An electrician earns $50 for the first hour plus $35 for every additional hour is a constant rate of change.
Learn more about equations here:
https://brainly.com/question/17194269
#SPJ2
Three concert tickets cost $45. At this rate, how much does it cost per ticket?
$135 per ticket
$3 per ticket
$15 per ticket
$48 per ticket
Out triangle-shaped pennants on the first day of school. If each pennant has a base of 5 inches and a height of 12 inches, what is the area of each pennant in square inches?
Answer:
Area of the penny = 30 square inches
Step-by-step explanation:
Out triangle-shaped pennants on the first day of school. If each pennant has a base of 5 inches and a height of 12 inches, what is the area of each pennant in square inches?
The pennant is triangular in shape. Hence:
Area of a Triangle = 1/2× Base × Height
Base of the pennant = 5 inches
Height = 12 inches
Area of the pennant = 1/2 × 5 inches × 12 inches
= 30 square inches
Question 5 please help out
Answer:
B
Step-by-step explanation:
try typing into ur calc. that is the answr u get!!
Hope this helps!! Pls mark me brainliest!!
pls help ill give extra points
Answer:
13x
Step-by-step explanation:
Answer:
13x
Step-by-step explanation:
So we need to make the denominator equal in order to collect like terms.
25x^2/5x+8x^2/x =?
Denominator needs to be 5x so multiply the second quotient by 5.
25x^2/5x + 40x^2/5x = ?
=65x^2/5x
=13x^2/x <---- x^2/x is like 2-1 which is exponent 1, x to the exponent 1 is x
=13x
Your answer is 13x
What is the area of the trapezoid?
Answer:
6.26 yards
Step-by-step explanation:
Answer:
6.25 would be the answer :)
Step-by-step explanation:
Given the graphs of f(x) =x -7 and g(x) =-5x-1, what is the solution to the equation f() = g(x)?
Answer:
1
Step-by-step explanation:
x-7=-5x-1
x-(-5x)-7=-1
x+5x-7=-1
6x-7=-1
6x=-1+7
6x=6
x=6/6
x=1
5) –3x – 3y=3
-5x + 2 y = 19
Answer:
x=31
Step-by-step explanation:
-3x-3(19)=3-5x+2
2x-57=5
2x=62
x=31
8(4-x)=7x+2
what is the value of x?
Answer:
The answer is x=2
Step-by-step explanation:
8(4-x)=7x+2
32-8x=7x+2
-8x+32=7x+2
8x+32-7x=7x+2-7x
-15x+32=2
-15x+32-32=2-32
-15x=-30
-15x/-15=-30/-15
x=2
Answer:
2
Step-by-step explanation:
First, do the distributive property: 32-8x =7x+2
Next, get the variable to one side: 32-8x(-7x)=7x(-7x)+2
Then, subtract 32 from both sides to isolate the variable: -15x+32(-32)=2(-32)
Finally, we divide -30 by -15 : -15x= -30
x= 2
ratios equivalent to 10:9.
Answer:20:18
Step-by-step explanation:
Answer:
111. Also, 5:3
Step-by-step explanation:
yw
- 2(5 + 5x) = 100
show work
Answer:
-10-10x=100
-10x=100+10
-10x=110
x=-11
Step-by-step explanation:
Answer:
-2(5+5x)=100
-10-10x=100
-10x=110
x=-11
Step-by-step explanation:
:)
Find the exact value of sec 330° in simplest form with a rational denominator.
Answer:
2√3/3
Step-by-step explanation:
Sec(330°)
=1/cos(330°)
=1/√3/2 (since Cos (330°)=√3/2
=1×2/√3
=2/√3×√3/√3
=2√3/3
Answer:
[tex]\implies \sec 330^o = \dfrac{2}{\sqrt3}=\dfrac{2\sqrt{3}}{3}[/tex]
Step-by-step explanation:
Given :-
[tex]\sec 330^o [/tex]And we need to find out its value . Firstly we know that 330° lies in 4th quadrant . And In fourth quadrant , cosine and secant are positive . Therefore , the result will be positive. Now we know that ,
[tex]\implies \sec (360^o-\theta)= \sec\theta [/tex]
Using this ,
[tex]\implies \sec (330^o) \\\\\rm\implies sec(360^o-30^o) \\\\\rm\implies \sec 30^o [/tex]
And the value of sec 30° is ,
[tex]\implies \sec 30^o = \dfrac{2}{\sqrt3}[/tex]
And by question we need to write it with a rational denominator .So on rationalising the denominator , we have ,
[tex]\implies \sec 30^o = \dfrac{2}{\sqrt3}=\boxed{\red{\dfrac{2\sqrt3}{3}}}[/tex]
Hence the required answer is 2√3/3.
Which three-dimensional shape is created when the rectangle is rotated around axis r?
Answer: rectangular prism
Step-by-step explanation:
The angles of a triangle are described as follows: Angle A is the largest angle; it's measure is twice the measure of Angle B. The measure of Angle C is 10 more than one-third of Angle B. Find the measures of angle B?
Answer:
[tex]\bold{\angle B = 51^\circ}[/tex]
Step-by-step explanation:
Given a [tex]\triangle ABC[/tex] such that [tex]\angle A[/tex] is the largest.
[tex]\angle A[/tex] is equal twice of [tex]\angle B[/tex]
[tex]\angle C[/tex] is 10 more than one third of [tex]\angle B[/tex]
To find:
Measurement of [tex]\angle B[/tex].
Solution:
Let [tex]\angle B =x^\circ[/tex]
As per question statement:
[tex]\angle A = 2\times \angle B=2x^\circ[/tex]
[tex]\angle C = \dfrac{1}{3}\angle B +10= \dfrac{1}{3}x +10 ^\circ[/tex]
Using the angle sum property of a triangle i.e. sum of all the three internal angles is equal to [tex]180^\circ[/tex].
[tex]2x+x+\dfrac{1}{3}x+10 = 180\\\Rightarrow \dfrac{10}{3}x =170\\\Rightarrow x = 51^\circ[/tex]
Therefore, the answer is:
[tex]\bold{\angle B = 51^\circ}[/tex]
The chagram shows a regular octagon joined to an equilateral triangle
NOT TO
SCALL
Work out the value of
Answer:
x = 165°
Step-by-step explanation:
x° = 360 - (the measure of one interior angle of the octagon + the measure of one interior angle of the equilateral ∆)
Each interior angle of a regular octagon = 135° ([tex] \frac{(n - 2)180}{n} = 135°)
An equilateral ∆ has equal angles, each measuring 60°.
Therefore:
x° = 360° - (135° + 60°)
x = 360 - 195
x = 165°
Answer:
165°
Step-by-step explanation:
