Answer:
x = 1 or -5/2
Step-by-step explanation:
-2x^2 - 3x + 5 = 0
multiply all through by -1
2x^2 + 3x - 5 = 0
....... 2x^2 × 5 = 10x^2 = +5x × -2x
(2x^2 + 5x)-(2x - 5) = 0
x(2x + 5) - 1(2x + 5) = 0
x - 1 = 0 or 2x + 5 = 0
x = 1 or 2x = - 5
x = 1 or -5/2
Explain in 1-2 sentences how you identify
proportional relationship
using a table or graph.
PLEASE helpppp
Answer:
You can tell because, as x increases/decreases, y increases/decreases at the same rate EACH TIME. This way, no matter how many times the proportions increase OR decrease, the ratio between x and y always stays the same.
30% of 145 =
do not round answer.
Answer:
0.00206896551
Step-by-step explanation:
30%/145=0.00206896551
[tex]\huge\text{Hey there!}[/tex]
[tex]\huge\text{Guide for you to go by....}\\\bullet\large\text{ Percentages run out 100}\\\bullet\large\text{The word \underline{\bold{of}} means \underline{multiply}}[/tex]
[tex]\bold{30\%\times145}\\\\\bold{\dfrac{30}{100}\times145}\\\\\bold{\dfrac{30}{100}=\dfrac{30\div10}{100\div10}=\dfrac{3}{10}}\\\\\bold{\dfrac{3}{10}\times145= answer}\\\\\bold{\dfrac{3}{10}\times145=\dfrac{87}{2}}\\\\\boxed{\boxed{\bold{Answer: \dfrac{87}{2}}}}\huge\checkmark[/tex]
[tex]\large\text{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
Mrs. Haas needs to print sets of music. Each set of music has 7 sheets. If Mrs. Haas has a package of 500 sheets of paper, what is the greatest number of sets she can print?
Answer:
71
Step-by-step explanation:
500 / 7 = 71
What is the solution set for the inequality.
t - 9 ≤ 8
A
{18, 19, 20, 21}
B
{17, 3, 14, 25}
C
{17, 20, 30, 44}
D
{8, 11, 15, 17}
Answer:
c) {17,20,30,44}
Step-by-step explanation:
OK po yan...sir mam.
Change the rational number 18 to a decimal. Show work (worth 3 points).
Answer:
18.0
18 as a decimal is 18.0
PLEASE HELP!!!!- Luisa ran 3 2/3 kilometers in 1/3 of an hour. If speed is the distance over time, calculate Luisa's Speed. Circle the letter for the correct answer _______________________________________________________________ Thank you! =)
Answer:
11 km per hour
Step-by-step explanation
I literally took the quiz!
what is the correct answers ?
Answer:
x = 4 , y = 5.65
Step-by-step explanation:
Jenny bought scrapbooking supplies for $145.00. She paid $11.60 in sales tax. What was the sales tax rate on the supplies? If necessary, round your answer to the nearest tenth.
a) 7%
b) 8%
c) 9%
d) 7.5%
The sales tax rate is 8%.
The correct option is (b).
What is Unitary Method?The unitary technique involves first determining the value of a single unit, followed by the value of the necessary number of units.
For example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.
12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.
As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.
This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.
Given:
Jenny bought scrapbooking supplies for $145.00.
She paid $11.60 in sales tax.
let the tax rate be x%.
So, the price without sales tax = 145 - 11.6 = $133.4
Thus, x% of 133.4 = 11.6
133.4 x = 1160
x = 8.65%
x= 8%
Hence, the tax rate is 8%.
Learn more about Unitary Method here:
https://brainly.com/question/22056199
#SPJ2
help please !!!!!!!!!!!!
Answer:
A & B
Step-by-step explanation:
TBH I was kind of getting that is was D, but follow your gut I just know its defiantly A
Answer:
a and b
Step-by-step explanation:
a- 6=9. Please help
Answer:
a = 15
Step-by-step explanation:
6 + 9 = 15
a = 15
15 - 6 = 9
yes
Answer:
a=15
Step-by-step explanation:
Move all terms not containing a to the right side of the equation.
15-6=9
A picture that is 7.5 inches tall and 10 inches wide hangs in the dining room.If the picture is enlarged to a width of 15 inches, how tall will it be?
A builder is finishing a new vet clinic and wants to install a drip edge along the roof. The edging he has decided to use comes from Canada and is available in 6 meter rolls. He measured the drip edge and determined he needs 415 feet of edging. How many rolls should he buy? *
Tony buys 6 packages of cookies. Each package of cookies
cost $2.50. How much will he spend?
I
Answer:
15 dollars
Step-by-step explanation:
Answer:
15$
Step-by-step explanation:
2.50 * 6
15
Can you guys help? Picture is attached down below.
Answer:
14.4
Step-by-step explanation:
hope this helps
Simplify 5 - 4(x - 1) - 2(x + 1)
Answer:
-6x+7
Step-by-step explanation:
Start by multiplying (x-1) by -4 and (x+1) by -2.
Then you will have the equation 5-4x+4-2x-2
Next, just find your like-terms.
Your like-terms are 5,4,-2 and -4x, 2x
Then, for easier for calculation, just use the equation:
-4x-2x+5x+4-2
Your final answer should then be:
-6x+7
1. Which value of the denominator would make the below statement true?
2/3 = 16/?
a.6
b. 8
c. 12
d. 24
Please help !
Answer:
d. 24
Step-by-step explanation:
a
Step-by-step explanation:
multiple
6times 3--16
Question 4 points)
Janine has a container of baking chocolate. One container weighs 4/5 pounds. The other container weighs 13/15 pounds. How many pounds of
baking chocolate does janine have?
Pls I need it now thank you
Answer:
8/90 or 50/90
Step-by-step explanation:
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A line includes the points (-1,0) and (-2,-9). What is its equation in slope-intercept form?
Answer:
y = -7x -7
Step-by-step explanation:
If (-1, 0) and (-2, -9) are on the same line then that means their slope is the same. We can find slope with (y1 - y2)/(x1 - x2)
(-2 - (-9)) / (-1 - 0) = 7 / -1 = -7
then we can use the formula y = mx + b
we know that forthe first instance y = 0 and x = -1 and m(slope) = -7
0 = -7*-1 + b
0 = 7 + b
b = -7
our formula then becomes y = -7x -7
3) determine the value of
(-6) x (-3)
What is the solution to the system of equations2x + 3y = 40andy=x + 10?
A
x = 2; y = 12
B
x = 4; y = 14
C x = 12; y = 2
D x = 14; y = 4
Answer:
A is the correct answer
Step-by-step explanation:
If you plug y=x+10 in for the Y variable you just have to solve by multiplying.
1.) It should look like this:
2x + 3(x +10) = 40
2.) You will distribute the three which will make the equation look like this:
2x + 3x + 30 = 40
3.) Add like terms. Then subtract 30 from both sides. Then divide 5 by both sides to get the variable x alone.
Hope that helps
A is the correct answer is the correcta answer
If you plug y=x+10 in for the Y variable you just have to solve by multiplying.
1.) It should look like this:
2x + 3(x +10) = 40
2.) You will distribute the three which will make the equation look like this:
2x + 3x + 30 = 40
3.) Add like terms. Then subtract 30 from both sides. Then divide 5 by both sides to get the variable x alone.
Which expression is equivalent to 9p+9p
Answer:
18p? I don't know what other expressions could be equivalent. I just added 9p to 9p to get my answer.
Solve and check -2x + 3 = -11
Answer:
x=7
Step-by-step explanation:
1. -2x+3=-11 << first make sure the x is one one side of the equal sign. so remove the 3, by subtracting if from 11
2. -2x+3=-11
-3 -3
=
3. -2x= -14 << then so isolate the x= divide -2 from -14 (two negatives divided equals a positive)
4. x=7
1 16
Solve the inequality
5+ - > -
x
a. x<0 or x > 2
b. x<1 or x>5
c. x<0 or x > 3
d. x <1 or x>3
Answer:
2
Step-by-step explanation:
Help me please!
If you get it right, I’ll will brainliest u!!
Answer: c
Step-by-step explanation:
Which ordered pair makes both inequalities true?
y x
On a coordinate plane, 2 straight lines are shown. The first solid line has a negative slope and goes through (0, 1) and (1, 0). Everything below and to the left of the line is shaded. The second dashed line has a positive slope and goes through (negative 1, negative 1) and (1, 1). Everything above and to the left of the line is shaded.
Answer:
B
Step-by-step explanation:
Calculator
6
What is the area of this figure?
5
4
3
Enter your answer in the box.
2
1
units
6
-5
-3
-2
1
3
5
-1
-1
--2-
Answer:
creo que sería un 72-613:818 :D espero que te allá ayudado ekisde bueno es una materia particular así que esa sería la respuesta espero que te allá ayudado
Answer:
44 units2
Step-by-step explanation:
took the test <3
What is the value of x
78
53
42
72
Answer:
127+x=180
180-127
x=53
rebecca has 6 yards of ribbon it takes 3/8 to wrap one package how many packages can see make
Answer:
She will have 8 pieces.
Hope you find this helpful!
Answer:
8 packages
Step-by-step explanation:
A sprinkler system uses 800 gallons of water in 5 days. The system uses ___ gallons of water in 1 day
Answer:
160
Step-by-step explanation:
800 gallons in 5 days. The days is the denominator and the gallons are the numerator, whatever you do the the bottom you do to the top, so you divide the denominator by 5 and the numerator by 5 and you get 160 gallons per day. If you want to know how your answer is right, multiply 160 by 5
Problem 2
A jewelry store purchased a pair of earrings for $54
before a markup was applied.
There was a 90% markup. After the markup, a 6.5%
sales tax is added.
What is the total after markup and tax?
Answer:
$109.27
Step-by-step explanation:
100 + 90 = 190
54/100 X 190 = 102.60
100 + 6.5 = 106.5
102.60/100 X 106.5 = 109.269
monetary unit round to 2dp
109.27
