Simplify 5a – (2a + 6)
Answer:
Step-by-step explanation:
Add '-2a' to each side of the equation.
5a + -2a = -6 + 2a + -2a
Combine like terms: 5a + -2a = 3a
3a = -6 + 2a + -2a
Combine like terms: 2a + -2a = 0
3a = -6 + 0
3a = -6
Divide each side by '3'.
a = -2
Simplifying
a = -2
5a -2a -6
3a -6
Step-by-step explanation:
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A bag contains 77 coins consisting of quarters and nickels. The total value of the coins is $12.50. Write a system of equations that can be used to determine the number of quarters, x, and the number of nickels, y, in the bag. a x + y = 77 0.25x + 0.5y = 12.5 b 0.25x +0.5 y = 77 x + y = 12.5 c x + y = 77 0.25x + 0.05y = 12.5 d 0.25x + 0.05y =77 x + y = 12.5
Answer:
A
Step-by-step explanation:
because the answer needs both amounts of money and the beginning equation x + y = 77 can't have any other numbers.
Which equation shows that y varies directly with x?
y = 0.8x
y = 0.8x/x
y = 0.8x - 5
y = x/8 + 5
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Answer:
[tex]2^{4} x 2^{-4} ---- 2^{0} \\2^{-4} x 2^{5} ---- 2^{1} \\\frac{2^{4} }{2^{5}} ---- 2^{-1} \\\\\frac{2^{4} }{2^{4}} ---- 2^{0}[/tex]
Step-by-step explanation:
(pretend the x's are multiplication signs)
hope this helps you!
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Answer: he owes him 3 cents
Step-by-step explanation:
Answer:
3$
Step-by-step explanation:
you got to do 8 minus 5.
You can buy 5 cans of beans at the Village Market for $3.20. You can buy 10 of the same cans of beans at Sam’s Club for $7.30. Which place is the better buy?
Answer:
Village Market
Step-by-step explanation:
3.20÷5=.64
7.30÷10=.73
geometry please please pleaseee help
Answer:
9 students have braces
Step-by-step explanation:
honestly, you could just probably solve it mentally but we are going to make a proportion.
[tex]\frac{3}{5} = \frac{x}{15}[/tex]
5*3 = 15; so you then multiply 3 by 3 and get 9 as your final answer
Cathy is playing a game with a set of 24 cards equally divided into 4 colors (red, green, blue, and yellow).
Find the probability of her randomly selecting a red card, not replacing it, and then selecting another red card.
A.
image
B.
image
C.
image
D.
image
Answer:
1/20
Step-by-step explanation:
P(red,red) = 4/16 x 3/15 = 1/4 x 1/5
Answer:
6/24
5/24
Step-by-step explanation:
count how many cards there are(24) then Find out how many red cards there are(4/24=6
Sue is 5 years older than Ann. In 6 years, Sue’s age will be 11 years less than twice Ann’s age then. How old is each person now?
Find the equation in slope-intercept form of a line with slope -2 and y-intercept 4.
A. y=-2x B. y=4x-2 C. y=2x-4 D. y=-2x+4
Answer:
D. y=-2x+4
Step-by-step explanation:
Find the length of x.
Answer:
5
Step-by-step explanation:
6/4 = 7.5/x
7.5/1.5=5
Consider AWHY below.
Y
h
31
67°
H Η
W
Solve for h. Round your answer to one decimal place.
73.0
Step-by-step explanation:
tan 67°=O/A=h/31
h=31tan67°
h=73.0
Solve for A.
BA + C = D
1)A = D-B-C
2)A = (D-C)/B
3)A = (C - D)B
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Match each radical expression with the equivalent exponential expression.
Radicals can be written as exponential expression as following:
[tex]\sqrt{3} = 3^{\frac{1}{2}}[/tex]
[tex]\sqrt[3]{2} = 2^{\frac{1}{3} }[/tex]
[tex]\sqrt[4]{3} = 3^{\frac{1}{4}}[/tex]
[tex]\sqrt[5]{2} = 2^{\frac{1}{5} }[/tex]
What is radical?The radical of a number is the same as the root of a number. The root can be a square root, cube root, or in general, nth root.
[tex]\sqrt[n]{x} = x^{\frac{1}{n} }[/tex]
Given radicals,
[tex]\sqrt{3} = 3^{\frac{1}{2}}[/tex]
[tex]\sqrt[3]{2} = 2^{\frac{1}{3} }[/tex]
[tex]\sqrt[4]{3} = 3^{\frac{1}{4}}[/tex]
[tex]\sqrt[5]{2} = 2^{\frac{1}{5} }[/tex]
Hence, Exponential expression for the given radicals are [tex]3^{\frac{1}{2} }, 2^{\frac{1}{3} }, 3^{\frac{1}{4} }, 2^{\frac{1}{5} }[/tex] .
Learn more about radical here:
https://brainly.com/question/1369233
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Please Help ASAP!! Will Mark BRAINLIEST! Solving Equations with Distributive Property.
1) -18 = 5-(6k - 19)
2) 6(8 - 3x) - (2x + 1) = 107
Answer:
1: k = 7
2: x= - 3
Step-by-step explanation:
sorry i don't know if u need an explanation
hope it helped tho
Step-by-step explanation:
Explanation in the pic
abcdefg
I need help:(
Find x and y
Please let me know if my answer is right! Thanks!
Are these terms alike or unlike: 2xy and 2xyz
Answer:
Unlike
Step-by-step explanation:
When it comes to like terms, the numbers must have the same ending variable, 2xy and 2xyz do not have the same ending variable, which seeing it, one ends with 2xy and the other with 2xyz. Therefore these terms are not the same and the answer is unlike.
Answer:
unlike
Step-by-step explanation:
this is bc 2xy does have a z while 2xyz does
plz help ill give brainliest for best answers
Answer:
The least they will have to pay is 235 dollars.
They will have to pay 15 more dollars next year. (250 dollars)
Step-by-step explanation:
25x3=75
40x4=160
75+160=235
25x2=50
40x5=200
50+200=250
Here is part of a train timetable.
Brighton
0718
0725
0728
London
0900
0832
08 48
Gavin gets to the station in Brighton at 0705
a) Work out how many minutes he has to wait until 07 18
minutes
(1)
b) Work out how long it will take the 07 18 train to get to London.
Give your answer in hours and minutes.
hr(s) min(s)
(2)
Total marks: 3
Tom's Ice Cream Shop sold 7 sundaes with nuts and 5 sundaes without nuts. What is the ratio of the number of sundaes with nuts to the number of sundaes without nuts?
Answer:
20 : 28
5 : 7 = 20 : 28. And 7 is a fourth of 28.
1. Kate deposits $2,350 in an account that earns interest at a rate of 1.1%, compounded
monthly. What is her ending balance after 5 years? Round to the nearest cent.
B = P (1+5) "
P =
r =
n =
t =
Answer:
$454220
Step-by-step explanation:
Given: B = P[tex](1 + \frac{r}{n} )^{nt}[/tex]
But, B is the future amount
P is the present amount = $2350
r is the rate = 1.1%
n is the number of compounding per year = 12
t is the number of years = 5
So that;
B = 2350[tex](1+\frac{1.1}{12}) ^{12*5}[/tex]
= 2350[tex](1.0917)^{60}[/tex]
B = 2350 x 193.2852
= 454220.22
B = $454220
Thus, her ending balance after 5 years is $454220.
A recipe for a 14 blueberry calls for one cup of flour. The number of muffins that can be made varies directly with the amount of flour used. There are 3 1/2 cup of flour available. How many muffins can be made?
Answer:
49
49 muffins would be made because if you first multiply 14 by 3 you would get 42 and if half of 14 is 7 and you add that to 42 which would equal 49 and there is your answer.
What is the value of y = 7 - 2x when
X=4?
When x = 4, y =
The triangle represents a scale drawing that was created by using a factor of One-half.
A triangle with sides lengths of 5 inches.
Which is true of the measures of the sides of the original triangle?
Each side of the original triangle is One-half the length of each side of the scale drawing.
Each side of the original triangle is 2 times the length of each side of the scale drawing.
Each side of the original triangle is the same length as each side of the scale drawing.
Each side of the original triangle is 2 inches shorter than the scale drawing.
9514 1404 393
Answer:
(b) Each side of the original triangle is 2 times the length of each side of the scale drawing.
Step-by-step explanation:
If the smaller is 1/2 the larger, then the larger is 2 times the smaller. The original triangle's sides are 2 times those of the scale drawing.
The value of the variable for which the equation is satisfied is called the
___________ of the equation.
Answer:
solution
Step-by-step explanation:
The value of the variable for which the equation is satisfied is called the solution of the equation.
f(x)=3x2+2x−3
g(x)=2x+4
Answer:
what are we supposed to find here ?
Find the markup rate on a 60$ jacket that sells for 75$
The price of a car was decreased by 40% to £750.
What was the price before the decrease?
2/5 divided by 4 and reduce the answer
Answer:
1/10 i guess
Step-by-step explanation:
2/5=0.4
0.4/4=0.1
0.1=1/10 (one tenth_
Answer:
1/10
Step-by-step explanation:
2/5 ÷4 is the same as 2/20, which is 1/10
Maria used one bag of flour. She baked
two loaves of bread. Then she used the
remaining flour to make 48 muffins. How
much flour was in the bag when Maria
began?
Answer:
48 pounds
Step-by-step explanation: