9514 1404 393
Answer:
lamp: $80end table: $140Step-by-step explanation:
If we let x and y represent the costs of a lamp and end table, respectively, the two purchases can be written as ...
3x +2y = 520
2x -y = 20
__
These equations can be solved many ways. If we use "elimination", we can add twice the second equation to the first to eliminate y:
(3x +2y) +2(2x -y) = (520) +2(20)
7x = 560 . . . . simplify
x = 80 . . . . . . divide by 7
y = 2x -20 = 2(80) -20 = 140
The cost of a lamp is $80; the cost of an end table is $140.
Write this fraction in an equation using words: 2/3
Answer:
two-thirds plus five=five and two-thirds
Step-by-step explanation:
Factoring Quadratics
1. X^2-25=0
(x+5)(x-5)
when you have a negative square number, you do + and - the square root :) it would not work if you were given +25
Will mark brainliest
Answer: Desmos will answer this question for you :) just input the functions
Step-by-step explanation:
HELP!!!!!
A quadratic function passes through the points (0,5), (2,3), and (3,5). Which function represents the same relationship?
Answer:
h(x)=x^2-3x+5
Step-by-step explanation:
7th grade
HELP MEEEE!
due today
Answer:
A.
Step-by-step explanation: Because as you see the dot is past the 2 and is on the third line out of 4, the 4th line is the next number.
What is the y-intercept of the function f(x) = -2/9x + 1/3x?
Answer:
Step-by-step explanation:
PLEASE HELP FAST ITS PRETTY EASY FOR BRIANLIST
Answer:
5^(1/2)
Step-by-step explanation:
5^(1/2)
simplify the expression
2x/(x+4) + 8/(x+4)
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[tex] \frac{2x}{x + 4} + \frac{8}{x + 4} = \\ [/tex]
[tex] \frac{2x + 8}{x + 4} = \\ [/tex]
[tex] \frac{2(x + 4)}{x + 4} = 2 \\ [/tex]
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
Find the difference.
60°
30°
40"
50"
40
i need assistance lol
5 4/8 = ? I really need help
if you mean in decimal form, it will be 5.5
A girl was asked to multiply a number by 7/8.instead she divided the number by 7/8and got the result 15 more than the correct result.what is the number
Answer:
x=56
Step-by-step explanation:
number = x
7/8x=8/7x-15
Add 15
15+7/8x=8/7x
Subtract 7/8
15=15/56x
x=56
The number is 56
Hope this helps!
Determine the 6th term of the following sequence.
1215, 405, 135, 45,...
Answer:
5
Step-by-step explanation:
Answer:
I think its 5
Step-by-step explanation:
because you divide them by 3 to get the next answer and 44 divided by 3 is 15 and 15 divided by 3 is 5
PLEASE HELP!
Identify the center and radius of the circle (x+4)^2 + (y-2)^2=16
#1.
м.
#
#
4.
3
70
6
N
P
70°
R
S
8
^_^
BY
-+
Answer: flip a table
Step-by-step explanation:
stand GRAB TABLE THEN FLIP
Brianna is getting materials for a chemistry experiment. Her teacher gives her a container that has 0.25 liter of a liquid in it. Brianna needs to use 0.4 of this liquid for the experiment. How much liquid will Brianna use?
Answer: 0.1 liter
Step-by-step explanation:
From the question, we are informed that Brianna teacher gives her a container that has 0.25 liter of a liquid in it and she needs to use 0.4 of this liquid for the experiment.
The amount of liquid that Brianna will use will be:
= 0.4 × 0.25 liters
= 0.1 liter
what's 2+2???????????:]
Answer:
4
Step-by-step explanation:
My mom was at the store with a 15% off coupon. She spent $25.00 with 7% sales tax. How much is the total?
Answer:
The answer is $22.74
Step-by-step explanation:
which number line shows an integer and its opposite?
Answer:
B
Step-by-step explanation:
An integer is a whole number (not including 0). An integer's opposite can be found by adding a negative sign to the front of it. A negative integer's opposite would be positive, while a positive integer's opposite would be negative.
HELP PLSSSSSS
Examine the figure below.
Determine which of the following angle measures are correct. Select all that apply.
Answer:
I believe the answer is A, C
11+(-3)-1/8j-3/8j+7=
Will give reward if right
Answer:
J = 7.5
Step-by-step explanation:
* This is going off of the estimate that the = sign means the equation is = to 0, as there is no value after the equal sign. *
First, start off by adding all of the like numbers.
11 + (-3) + 7 = 8 + 7 = 15
- 1/8 j - 3/8 j = - 4/8 j.
Combining those two sums, we get:
15 - 4/8 j = 0
Subtract 15 from both sides,
-4/8 j = -15
Simplify -4/8 to -1/2, and then to -0.5
-0.5j = -15
Divide.
-15/-0.5 = 7.5
When you divide a negative number by another negative number, you get a positive. Therefore, the answer is J = 7.5
If the number after the = sign IS NOT 0, then when you get to 15 - 0.5j, just do the steps but with a number that isn't 0.
mL1 = 26°
and
mL3 = 53°
What is
mL4
Answer:
53 + 26
=79 is righttherefore m angle 4 is 79
The angles of a triangle are in an extended ratio of 5:7:3. What is the measure of the
largest angle?
Answer:
84°
Step-by-step explanation:
Let the measures of the triangle be 5x, 7x, 3x.
By interior angle sum postulate of a triangle.
5x + 7x + 3x = 180°
15x = 180°
x = 180°/15
x = 12°
7x = 7*12°= 84°
Measure of the largest angle = 84°
SOMEONE HELP ME WITH GEOMETRY PLEASE!!!!
Find the coordinates of the orthocenter of the triangle with the given vertices.
A(−1, 2), B(9, 2), C(−1, −3)
Answer:
is there a picture or something?
Answer:
it's (-1,2)
Step-by-step explanation:
When 0.3(4x – 8) – 0.5(–2.4x + 4) is simplified, what is the resulting expression?
A. -4.4
B. 1.2x - 2.4 + 1.2x - 2
C. 2.4x - 0.4
D. 2.4x - 4.4
Answer:
It's the B
Step-by-step explanation:
0.3*4=1.2
0.3 *(-8)=-2.4
-0.5*(-2.4x)= 1.2x
-0.5*4=-2
So it's 1.2x - 2.4 + 1.2x - 2
Answer:its B
Step-by-step explanation:
I just took the quiz
Last year, the average monthly revenue at the Richmond Times newspaper was $82,980. So far this year, the average has been 25% more than last year. What is the average revenue so far this year?
Answer:
103,725
Step-by-step explanation:
82,980x.25+82,980
Discount and Tax examples for math... HELP!!!!
Answer:
Cathy bought a bicycle in Washington, where the sales tax rate was 6.5% of the purchase price. What was (a) the sales tax and (b) the total cost of a bicycle if the purchase price of the bicycle was $392?
please solve will give brainiest
Step-by-step explanation:
BODMAS
155.5-5.5*20.7
155.5-113.85
=41.65
Answer:
41.65
Step-by-step explanation:
155.5-(5.5*20.7) order of operation
155.5-113.85=
41.65
(-4, -7) and (-6, 9) in slope-intercept form. Show work
Answer:
Equation of line in slope-intercept form is: y = -8x-39
Step-by-step explanation:
Given points are:
(-4, -7) and (-6, 9)
The slope-intercept form is given by the equation
[tex]y = mx+b[/tex]
Here m is the slope of the line and b is the y-intercept.
m is found using the formula
[tex]m = \frac{y_2-y_1}{x_2-x_1}[/tex]
Here
(x1,y1) = (-4-7)
(x2,y2) = (-6,9)
Putting the values in the formula
[tex]m = \frac{9+7}{-6+4} = \frac{16}{-2} = -8[/tex]
Putting slope in general equation
[tex]y = -8x+b[/tex]
Putting (-6,9) in the equation
[tex]9 = -8(-6)+b\\9 = 48+b\\b = 9-48\\b = -39[/tex]
Putting the value of b we get
[tex]y = -8x-39[/tex]
Hence,
Equation of line in slope-intercept form is: y = -8x-39
37x+2=38x find measure
Answer:
x = 2
Step-by-step explanation:
[tex]37x + 2 = 38x\\=> 38x-37x=2\\=> x = 2[/tex]
Answer:
x=2
Step-by-step explanation:
37x + 2 = 38x
<=> 2 = 38x - 37x
<=> 2 = x
So x = 2