Answer:
Yes, The expressions 8a² - 4b + 7a² and 5(3a² - 2b) + 6b are equivalent
Step-by-step explanation:
To answer the question you must simplify each expression, then compare them to find if they are equivalent or not
∵ The 1st expression = 8a² - 4b + 7a²
→ Add the like terms
∴ The 1st expression = (8a² + 7a²) - 4b
∴ The 1st expression = 15a² - 4b
∵ The 2nd expression = 5(3a² - 2b) + 6b
→ Multiply the bracket by 5
∴ The 2nd expression = 5(3a²) - 5(2b) + 6b
∴ The 2nd expression = 15a² - 10b + 6b
→ Add the like terms
∵ The 2nd expression = 15a² + (-10b + 6b)
∴ The 2nd expression = 15a² + -4b
→ Remember (+)(-) = (-)
∴ The 2nd expression = 15a² - 4b
∵ The 1st expression = The 2nd expression
∴ The two expressions are equivalent
∴ The expressions 8a² - 4b + 7a² and 5(3a² - 2b) + 6b are equivalent
Jonas is doing a science experiment with his class. The teacher has 21 fluid ounces of pound water too share equally with 10 pairs of students. How much pond water will jonas and his science partner receive ? What is the answer as fraction and decimal?
Answer:
2.1 and 21/10
Step-by-step explanation:
PLEASE HELP ASAP!!! i’ll mark brainlest
Answer:
3
Step-by-step explanation:
It owuld be 3 cuz the least significant digit would be used to determine the precision right? So it would be 3!
which graph represents -10y - 5x = -15
Answer:
use the website desmos, and type in the equation.
i'll try to explain the line to the best of my ability, it should be a downward line with a slope of 1/2
Answer:it has a slope 1/2
Step-by-step explanation:slope 1/2
What is the equation of a line that passes
through (0.5, 4.25) and (2, 18.5) and has a
y-intercept of -0.5
Answer:y=9.5x-0.5
Step-by-step explanation:
Ok, so you need to use the equation y2-y1/x2-x1 to find the slope. So (18.5-4.25)/(2-0.5) so 14.25/1.5 , calculate that and you get 9.5 which is your slope, apply that to the slope formula which is y=mx+b where (m) is slope and (b) is y intercept and you get y=9.5x-0.5
PLEASE HELP ME I NEED ANSWER RIGHT NOS
How do I improve in dancing? I want to be a background dancer!
Answer: To improve your dancing, you could watch some dance tutorials, or play the game, Just Dance.
Step-by-step explanation:
Solve 0 = 2y - 8x + 10 for y.
Answer:
y = 4x - 5
Step-by-step explanation:
move the 2y to the left side of the equation and move the 0 to the right side of the equation in which it becomes -2y = -8x+ 10 then divide the whole equation by -2 since y cannot be negative and have a coefficient. so then the equation becomes y = 4x - 5.
Joaquin buys white shirts for $12 each. after he dyes and paints each shirt he plans to sell them at a 65% markup Joaquin wants to know the selling price of each shirt
Answer:
1. 12+0.65(12)
2. 19.80
please help! Fill in the 4 blanks !
Answer:
cat bird train elephant
Step-by-step explanation:
5th grade math. Correct answer will be marked brainliest!
Answer:
No
Step-by-step explanation:
Think of the decimal number as 97. Would it round up or down? Because 7 is greater than 4, you would round it up to 100. And since this is a whole number, the correct answer would be 7 meters per second.
Hope this makes sense!
Plz help me answer this !!!
Answer:
24
Step-by-step explanation:
What is the volume of the cylinder
A. 725.34m
B. 1,995.7m
C. 7,978.74m
D. 15,232.14m
Emily attends a Film Festival. The admission fee is $10. Each movie ticket cost $5 each. Emily wants to determine how many movie tickets she can buy if she has a total of $40 before she pays the admission fee.
Answer:
Emily can buy 6 movie tickets after paying the admission fee
Step-by-step explanation:
Let x be the number of movie tickets
If each movie ticket costs 5 dollars then the cost of x movies will be 5x
And the admission fee will be a constant.
She has $40 in total
So the equation can be written as
[tex]10+5x = 40\\5x = 40-10\\5x = 30\\\frac{5x}{5} = \frac{30}{5}\\x = 6[/tex]
Hence,
Emily can buy 6 movie tickets after paying the admission fee
A card is randomly draw from a shuffled deck of cards and NOT REPLACED. A second card is drawn from the remaining shuffled cards. What is the approximate probability that both cards are RED?
A smart phone was on sale for $585. If the phone
was marked down 35%, what was the original
price of the smart phone?
Please help I ASAP will mark you brainliest
Answer:
$789.75
Step-by-step explanation:
I'm just smart
Sara is saving her summer earnings for a $500 school trip in the fall. She has $200 in her savings account at the beginning of June. Each week, Sara deposits $35 into her savings account. Sara wants to know how many weeks she needs to deposit her money? Which inequality would tell her this?
Answer:she will need around 9 weeks and she will have enuogh
Step-by-step explanation:
9
What is -8 minus blank = -2?
Answer:
blank is -6
Step-by-step explanation:
-8-?=-2
+8 +8
-?=6
--- --
-1 -1
?=-6
PLEASEEEE HELP WILL GIVE BRAINLIST
Evaluate when f(x)= 5x-1 and x+3 when x=−2.
Answer:
f(x) = -11 and -1
Step-by-step explanation:
Legit plug in -2 into both equations lol. So plug in -2 for x, and get the answer from there.
Answer:
5x3−x2−5x+1 equal to 0.
5x3−x2−5x+1=0
Step-by-step explanation:
Intro to Proportional Relationships:Question 4
Which of the following best represents a proportional
relationship?
Select one:
A restaurant sells 3 desserts for $6.00 and sells 5 desserts for
$7.00
A drone flew 50 feet in 10 seconds and flew 75 feet in 15 seconds.
John scored 8 points in 12 minutes and scored 15 points in 20
minutes
.
A bird ate 20 seeds in 30 seconds and ate 15 seeds in 20 seconds.
Answer:
the answer is A
Step-by-step explanation:
Sarah bought a bike that cost $260. She had a
coupon that was worth $55 off the cost of any
bike. Use the expression 260 + (-55) to find how
much Sarah paid for her bike.
PLEASE HELP ME IM DESPIRATE
Last year, The tutoring center paid their tutors $40 per hour. This year, they payed them $46 per hour. What percent was the increase in pay?
Answer:
15% increase
Step-by-step explanation:
In order to solve this problem begin with finding the difference between the initial value and final value. [tex]46-40=6[/tex] then once this value is known divide it by the original value to get a decimal. [tex]\frac{6}{40}[/tex] which gives you [tex]0.15[/tex] multiplying this value by 100% will give you your answer. [tex].15 * 100 =[/tex][tex]15[/tex]%
TLDR: the answer is 15%
Solve the system of equations-5x-7y=23and 3x+4y=12 by combining the equations
Answer:
Step-by-step explanation:
32
Answer:
x=8 and y= -9
Step-by-step explanation:
(-5x-7y=23)x3
(3x+4y=-12)x5
-15x-21y=69
15x+20y=-60
-y=9
y=-9
x=8
Roman and his friends went out to dinner at a local restaurant. His bill was $56.70. He decides to leave an 18% tip for the server. How much will Roman's total be once he adds the tip?
a-$10.20
b-$66.91
c-$74.70
d-$102.60
Answer:
$66.91
Step-by-step explanation:
If you need to add 18% to the total of $56.70, then it's easier to multiply by 1.18 (118%).
$56.70 x 1.18 = $66.91
Lina is making a spreadsheet for an assignment. The spreadsheet, when completed, will be 191 lines long, and Lina has already completed 59 lines.
x + 59 = 191
How many lines does Lina have left to complete?
A. 250
B. 221
C. 73
D. 132
Identifying the Property of Equality
Quick
Check
Identify the correct property of equality to solve each equation.
3 + x = 27
X
6
= 5
Answer:
3 + x = 27 x= 24
30/6 = 5
Step-by-step explanation:
6x5 = 30
27-3 = 24
Answer:
Subtraction Property of Equality with 3
multiplication property of equality with 6
Step-by-step explanation:
just did a test on edge and got a 100%
please help,, will mark brainliest!!
Answer:
sorry thats too hard for me
Step-by-step explanation:
75% of the normal price of headphones is 45$. What's the normal price?
Answer:
60$ is the normal price.
Why:
Because if 45$ is 75%, then 30$ is 50%, 15 is 25%, and 0 is 0%. 50% + 50% = 100%. (That's how I did this one, anyway. This works on any 25%, 50%, or 75% problem.)
Jacinto está cercando un terreno de forma rectangular. Cuando lleva puesto alambre a dos lados consecutivos de la tierra, se da cuenta que ha gastado 170 m de alambre. Si sabe que la diagonal del rectángulo mide 130 m, ¿cuáles son las dimensiones y el área del terreno?
Answer:
Step-by-step explanation:
Given the perimeter of the rectangular shape = 170m
Length of the diagonal = 130m
Perimeter = 2L + 2W
diagonal d² = L² + w²
L is the length of the terrain
w is the width
140 = 2L + 2W
70 = L+W ..... 1
130² = L²+w² ..... 2
from 1, L = 70-w
substitute into 2;
130² = (70-w)²+w²
130² = 4900-140w + 2w²
16900 = 4900-140w + 2w²
2w²-140w - 12000 = 0
w²-70w - 6000 = 0
On factorizing;
(w+50)(w−120) = 0
w - 120 = 0
w = 120 m
Since L = 70 - w
L = 70 - 120
L = -50m
Hence the dimension is 120m by 50 m
what is c=(s+b/4) solve s?
Answer:
s =c-b/4
Step-by-step explanation:
this is what i think you wanted
For each babysitting job, Tamar charges $6 for bus fare plus $8 per hour. She only accepts babysitting jobs if the total charge is at least $30. What is the minimum number of hours for a babysitting job she would accept?
A 2 and one-half hours
B 3 hours
C 4 hours
D 4 and one-half hours
Answer:
B. 3 hours
Step-by-step explanation:
It’s 6+8x=30
Answer:
B) 3 hours
Step-by-step explanation:
Hope this helped <333