Answer:
First, substitute x for 2 in 7x+5=21.
7 * 2 = 14 + 5 = 19
x = 2 is not a solution of 7x+5=21.
7b) A recipe for salad dressing calls for 3 tablespoons of oil for every 2 tablespoons of
vinegar. The line represents the relationship between the amount of oil and the amount of
vinegar needed to make salad dressing according to this recipe. The point (1,1.5) is on the
line.
In the box below, write an equation that represents the relationship between oil (o) and vinegar (V)
Explain the meaning of the point (1,1.5).
Answer:
the meaning of 1, 1.5 is that 1.5 is the oil sad and the 1 is the vinegar.
Step-by-step explanation:
What is the slope of the line that passes through (3,3) (7,6)?
Answer:
3/4 i think
Step-by-step explanation:
Answer:
0.75
Step-by-step explanation:
slope=(y_2-y_1)/(x_2-x_1)
slope=(6-3)/(7-3)
slope=(3)/(4)
slope=0.75
PLEASE HELP An algebraic ___ is a mathematical phrase
With numbers, variables, operations for days.
is it coefficient , expression or evaluate
Answer: I think its, Algebraic expression
Step-by-step explanation:
A mathematical phrase involving at least one variable and sometimes numbers and operation symbols.
Answer:
The answer to this question is algebraic expression.
Step-by-step explanation:
Got it right on edge 2020!!!
Hope this helps!!!
Lower bound of 19.4mm??
Answer:
19.35?
Step-by-step explanation:
Can someone please do this!! I need the work done with it !:( it’s due tonight
Pls help me I need this stuff
Answer:
question 5) 43
question 6) 38
question 3) 107
question 4) 82
Step-by-step explanation:
question 5 and 6 add up to 90 so 90-47=43
and questions 3 and 4 add up to 180 so, 180-73=107
qnd 52+46 =98 so 180-98=82
Answer the following equation: d(-4) = 32
Answer:
d=-8
Step-by-step explanation:
-8 × -4=+32 ....always remember a positive number and negative number equals a negative number and negative number times a negative number is a positive number
Answer:
-8
Step-by-step explanation:
Look at the diagram below of the pythagorean theorem. What is the area of square A?
(Will mark brainliest, please just help me)
Answer:
It could be 14M.
Step-by-step explanation:
A to B is similar length, so that is why it could be 14M.
Mrs. Wicker bought a case of 24 juice boxes for $12. How much did each box of juice cost?
Answer:
If 24 juice boxes=12$
Then one box=24÷12=2
One box is 2$
Step-by-step explanation:
:)
Please help!! Please
what do u need help with?
Step-by-step explanation:
I'm in confusion
¯\(°_o)/¯
ANSWER QUICK FOR BRANLIEST PLEASEEEE!!! There are 4 packs of crayons for every 7 students. How many students can share 16
packs?
Factorize
2(x+y) ²+9 (x+y)+7
Answer:
(2x+2y+7)(x+y+7)
Step-by-step explanation:
I suspect this is what you are expected to do.
Define z=x+y
2z^2+9z+7
2z^2+2z+7z+7
2z(z+1)+7(z+1)
(2z+7)(z+1)
(2x+2y+7)(x+y+7)
9 is what percent of 45? Use the table to find the percent.
Shirts Sold
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%
45
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
9 is
I
percent of 45.
Answer:
20%
Step-by-step explanation:
When asked, "x is what percent of y?" divide x by y and multiply by 100.
9/45 = 0.2
0.2 * 100 = 20%
Recall that we multiply by 100 to convert decimal to percent.
Step-by-step explanation:
Let x% of 45 be 9 Then
x % of 45 = 9
x / 100 * 45 = 9
45x = 900
x = 900 / 45
x = 20%
the options doesn't matches.
Solve: 12x^2+5x-4=12^2x+6
A. x = 2
B. x = –5
C. x = 2, x = –5
D. no solution
What is -6(4x+2) in math?
Write x² - 6x + 3 in the form (x-a)²+ b.
Answer:
(x + 3)² - 12
Step-by-step explanation:
x²+6x-3
= x²+ 6x + 9 - 12
= (x + 3)² - 12
The form of x² - 6x + 3 can be written as (x-3)² - 6.
What is a quadratic equation?A quadratic equation is the second-order degree algebraic expression in a variable. the standard form of this expression is ax² + bx + c = 0 where a. b are coefficients and x is the variable and c is a constant.
We are given that;
Equation= x² - 6x + 3
Now,
To write x² - 6x + 3 in the form (x-a)²+ b, we can use the method of completing the square. This involves adding and subtracting a constant term to make the expression a perfect square trinomial. Here are the steps:
Write x² - 6x + 3 as x² - 6x + ___ - ___ + 3, leaving two blanks for the constant term.
To find the constant term, divide the coefficient of x by 2 and square it. In this case, -6/2 = -3 and (-3)² = 9. So we fill in the blanks with 9 and get x² - 6x + 9 - 9 + 3.
Factor the first three terms as a perfect square: (x - 3)² - 9 + 3.
Simplify the last two terms: (x - 3)² - 6.
Compare with the form (x-a)²+ b and identify a and b. In this case, a = 3 and b = -6.
Therefore, by the given equation the answer will be (x-3)² - 6.
Learn more about quadratic equations;
https://brainly.com/question/17177510
#SPJ2
Helppp MEEEEEEE!!!!! what is 3(-2)-15+2=
And plzzzzzzzz show your work
Answer:
Step-by-step explanation:
3(-2)-15+2 = -6-15+2 = -21+2 = -19
Answer: -19
Step-by-step explanation:
3(-2)-15+2
Multiply the 3 and -2 because of the parenthesis first:-6-15+2
Next just put the negative numbers together:-21+2
Then just do -21+2=-19
1/3S=9
Three options
A S=3
B. S2/3
C S=27
1/3 times S=9
Answer:
C
Step-by-step explanation:
1/3S=9
multiply 3 on both sides
S=27
PLEASE HELP MEE THIS IS URGENT
Answer:
B i think
Step-by-step explanation:
I am nit sure but j think do
If you wanted to measure how much your dog weighs, which unit of measure would you use?
A: Grams
B: Meters
C: Liters
Answer:
Grams
Step-by-step explanation:
Meters is for measuring height
Litres are for measuring water
Helppp plzzzzzzzzzzzzzz
Answer:
equivalent
Step-by-step explanation:
i just know
At a sale this week, a suit is being sold for $663. This is a 15% discount from the original price.
What is the original price?
Answer:
563.55
Step-by-step explanation:
85/100*663=563.55
Today, everything at a store is on sale. The store offers a 20% discount. The regular price of a t- shirt is 24$ what is the discount
Answer:
The cost of the t-shirt would be $19.20 with a 20% discount and the amount discounted is $4.80
Step-by-step explanation:
24*0.8 = $19.20
Answer:
Step-by-step explanation:
The discount is:
price × discount
We can substitute the discount of 20% for 0.2 and multiply to find the amount of money taken away which gives us the remaining amount or the amount you pay.
$19.20
Y= 5x+3 find the slope m=
Answer:
m = 5
Step-by-step explanation:
.........................
(Click on the picture)
Write an equation of a line that passes through the two given points. Your answer should be written in slope-intercept form.
P(-8,-8),q ( 0,0)
Answer:
y = x
Step-by-step explanation:
Find the slope using rise over run (y2 - y1) / (x2 - x1)
Plug in the points:
(y2 - y1) / (x2 - x1)
(-8 - 0) / (-8 - 0)
-8 / -8
= 1
So, the slope is 1.
Plug in the slope and a point into y = mx + b and solve for b:
y = mx + b
-8 = 1(-8) + b
-8 = -8 + b
0 = b
Plug in the slope and y intercept into y = mx + b
y = mx + b
y = 1x + 0
y = x
So, the equation of the line is y = x
en este caso hay dos expresiones algebraicas equivalentes que representen el área del círculo Cuáles son las esas expresiones equivalentes a 153.86
Answer:
I don't speak Spanish so sorry can't help
An employee plays $75 towards health insurance, while the employer pays $350. What is the ratio of the employers contribution to the employees contribution?
Answer:
350:75?
fraction form: 350/70
Step-by-step explanation:
HELP FAST!!!!
A software designer is mapping the streets for a new racing game. All of the streets are depicted as either perpendicular or parallel lines. The equation of the lane passing through A and B is -7x + 3y = -21.5. What is the equation of the central street PQ?
A. -3x + 4y = 3
B. -1.5x − 3.5y = -31.5
C. 2x + y = 20
D. -2.25x + y = -9.75
Answer:
[tex]-1.5x - 3.5y =- 31.5[/tex]
Step-by-step explanation:
Given
AB: [tex]-7x + 3y = -21.5[/tex]
[tex]PQ(x_1,y_1) = (7,6)[/tex]
Required
Determine the equation of PQ
First, we calculate the slope of AB:
[tex]-7x + 3y = -21.5[/tex]
Make 3y the subject
[tex]3y = 7x - 21.5[/tex]
Make y the subject
[tex]y = \frac{7}{3}x - \frac{21.5}{3}[/tex]
An equation has the general form:
[tex]y = mx + b[/tex]
Where m = slope
So:
[tex]m = \frac{7}{3}[/tex] -- Slope of AB
From the attached diagram, we can see that PQ is perpendicular to AB.
This means that, the relationship between their slope is:
[tex]m_2 = -\frac{1}{m_1}[/tex]
Substitute 7/3 for m1
[tex]m_2 = -\frac{1}{7/3}[/tex]
[tex]m_2 = -\frac{3}{7}[/tex]
The equation of PQ is then calculated as:
[tex]y - y_1 = m(x - x_1)[/tex]
Where
[tex]m = m_2 = -\frac{3}{7}[/tex]
and
[tex]PQ(x_1,y_1) = (7,6)[/tex]
So, we have:
[tex]y - 6 = -\frac{3}{7}(x - 7)[/tex]
Multiply both sides by 7
[tex]7(y - 6) = -\frac{3}{7}(x - 7)*7[/tex]
[tex]7y - 42 = -3(x-7)[/tex]
Open bracket
[tex]7y - 42 = -3x + 21[/tex]
Collect Like Terms
[tex]3x + 7y = 42 + 21[/tex]
[tex]3x + 7y = 63[/tex]
Divide through by -1/2
[tex]-\frac{1}{2}(3x + 7y) = -\frac{1}{2}*63[/tex]
[tex]-1.5x - 3.5y =- 31.5[/tex]
The equation of PQ is: [tex]-1.5x - 3.5y =- 31.5[/tex]
Answer:
B. -1.5x − 3.5y = -31.5
Step-by-step explanation:
Got it right on the test. ; )
xy(3x2 – 2y2) – yz(2y2 – 3x2) + zx(15x2 – 10y2)