Given :
Lulu tells her little brother, Jack, that she is holding 20 coins, all of which are either dimes or quarters.
They have a value of $4.10. She says she will give him the coins if he can tell her how many of each she is holding.
To Find :
How many dimes and quarters in Lulu holding?
Solution :
4.10 dollar = 410 cents
Let, number of dimes and quarter are x and y.
So, x + y = 20 ...1)
Also, 10x + 25y = 410 ...2)
Putting value of 1) in equation 2), we get :
10x + 25( 20 - x ) = 410
10x + 500 - 25x = 410
15x = 90
x = 6
y = 14
Therefore, number of dimes and quarters are 6 and 14 respectively.
Hence, this is the required solution.
If 7 pounds cost $5.46, find the cost of 3 pounds.
Answer:
$2.19
Step-by-step explanation:
7 divided by 3 is 2.5
5.46 divided by 2.5 is 2.184
round it and get 2.19
Expand the expression 2(y + 5x)
Answer:
2y+10x
Step-by-step explanation:
distribute the 2 into the rest of the equation
Consider the expression 103 x 0.006. a) What is the exponent in the power of 10? [ Select ] b) How many factors of 10 are in 103? [ Select ] c) How do your answers to the last two questions relate to one another? [ Select ] d) What is the value of 103 x 0.006? [ Select ]
Solution :
Given that the expression is :
[tex]$10^3 \times 0.006$[/tex]
This can be written as,
[tex]$\Rightarrow 10^3 \times \frac{6}{1000}$[/tex]
[tex]$\Rightarrow 10^3 \times \frac{6}{10^3}$[/tex]
[tex]$\Rightarrow 10^0 \times 6$[/tex]
a). Therefore the exponent in the power of 10
= 0
b). Factors of 10 in [tex]$10^3$[/tex]
= 10 x 10 x 10
= 1000
= [tex]$10^3$[/tex]
So there are 3 factors of 10 in [tex]$10^3$[/tex]
c). If we compare the exponent of power of 10 in 1000 and factors of 10 in 1000, then both of them will be same.
But in part a), we are finding exponent in the power of 10 in the expression which is equal to 0. And in part b), we are finding the factor of 10 in 1000, which is equal to 3, as 10 x 10 x 10 = 1000.
d). The value of the expression [tex]$10^3 \times 0.006$[/tex] is 6.
true Or false
1.inequalities are similar to equations
2.you never isolate the variable in an inequality '
The scatter plot shows the amount of sleep Aria got the night before a test and her test scores. Which is the best prediction for Aria’s grade when she sleeps for 10 hours?
A 75
b 83
C 92
D 99
Answer: y= 3x+62
Step-by-step explanation: m= y₂-y₁/x₂-x₁
m= 80-62/6-0
m= 18/6
m=3
y-y₁=m(x-x₁)
y-62= 3(x-0)
y-62= 3x-0
y= 3x+62
Q. At the gas station Jessie purchases a candy bar for $1.25, a drink for $2.58 and a bag of
Takis for $3.24. What will Jessie spend on a sales tax if it is 3.2%?
will give crown
2x2=x/273x8=
Answer:
-193 is correct.
I don’t understand so please HELPPPPPPPPPPPPPP
Answer:
C
Step-by-step explanation:
Okay so im going to gudie you thru So what it is asking you is to Count all the cubic squares looking things so what i can see is that You circled 169 aka C that would be correct because it cant be 11 cause it dosent look like 11 square units lol you get what im saying so the answer is C hope this HELPSS!!
By the way follow my insta. exotic. jaliyah if you need anymore help
Plsss help ty I’ll mark u
Answer:
7/4 meter
Step-by-step explanation:
their all in fractions of 8 so let reduce
Corn - 8 goes into 19 twice with the remander of 3 --> 2 and 3/8
Pepper 5/8 cause that cant be reduced any lower
Squash - 7/8 cant be reduced any more
Now its asking to subtract the tallest plant from the smallest to see the diffrence
The tallest plant is Corn and the shortest is Pepper
19/8 - 5/8 = 14/8
reduce 7/4
Answer:
It is 14/5 meters taller.
Step-by-step explanation:
[tex]\frac{19}{8}[/tex] - [tex]\frac{5}{8}[/tex] = [tex]\frac{14}{8}[/tex]
Owen simplified the expression r-8 s-5.
There are no like terms.
Answer:
=r−8s−5
quien me ayuda por favor no se como hacerlos
A number consists of two digit whose sum is 9. If 9 is subtracted from the number the digits
interchange their places. Find the number.
Answer:
[tex]54[/tex]
Step-by-step explanation:
[tex]Let\ the\ first\ digit\ of\ the\ two\ digit\ number\ be\ a\\Let\ the\ second\ digit\ of\ the\ two\ digit\ number\ be\ b\\Hence,\\We\ are\ given\ that,\\a+b=9\\Hence,\\b=(9-a)\\As\ we\ know\ that,\\The\ original\ number\ containing\ 2-digits\ can\ be\ written\ as: 10a+b\\Hence,\\The\ original\ number=10a+(9-a)\\The\ original\ number=9a+9\\\\[/tex]
[tex]Now,\\Lets\ consider\ the\ reversed\ number\ with\ the\ reversed\ digits\ of\ the\\ original\ number.\\Hence,\\Reversed\ number\ containing\ reversed\ digits\ can\ be\ written\ as:10b+a\\Hence,\\Reversed\ number=10b+a\\Reversed\ number=10(9-a)+a=90-10a+a=90-9a\\[/tex]
[tex]Now,\\We\ are\ given\ that,\\Original\ Number-9=Reversed\ number\\Or,\\Original\ Number-Reversed\ number=9\\Hence,\\9a+9-(90-9a)=9\\9a+9-90+9a=9\\18a=90\\a=\frac{90}{18}=5[/tex]
[tex]As\ a=5, b=(9-5)=4\\Hence,\\The\ original\ number=10a+b=10*5+4=50+4=54[/tex]
plzz help me it is hard plz
Answer:
LETS GO WITH B
Step-by-step explanation:
help me please please please please
Answer:
Blank #1. 4
Blank #2. 25
Blank #3. 5
Blank #4. 32
Step-by-step explanation:
Blank #1. If a farm lets you pick 3 pints of raspberries for $12.00, then the cost per pint would be $4.00.
Blank #2. If one pint costs $4.00, then you would get a quarter of a dollar per pint, or 0.25 (this is because four quarters are in a dollar, one quarter=25 cents).
Blank #3. If you continue at this rate, for $20.00, you would be able to get 5 pints of raspberries because if you pick 3 pints of raspberries for $12.00, and one pint costs $4.00 (multiply 3 and 4 to get the total cost of $12.00), and if you pick 5 pints, that cost $4.00 each, for $20.00 (multiply 4 and 5 to get $20.00). So, if you had $20.00, you would be able to pick 5 pints of raspberries for a total of $20.00.
Blank #4. For this question, all you have to do is multiply 4 and 8 ($4.00 and 8 pints) to get a result of $32.00 as your total cost. So, if you picked 8 pints of raspberries for $4.00 per pint, then you will have a total cost of $32.00.
Hope that helps and please give me brainliest!!
h(x) = 2.63x - 15.78
What is the value of x if h(x) = 13.15?
Answer:
5
Step-by-step explanation:
2.63x5 = 15.78
Liliana spends $4.00 on 2 boxes of popcorn and 2 drinks.Nadette spends $5.25 on 2 boxes of popcorn and 3 drinks.The prices of the popcorn and drinks can be determined by solving the system of equations.
2p+2d=4.00
2p+3d=5.25
what is the price of a box of popcorn? A drink?
P=
D=
Answer:
p=0.75$
d=1.25$
Step-by-step explanation:
2p+2d=4
So 2p=4-2d
2p+3d=5.25
4-2d+3d=5.25
d=5.25-4
d=1.25
2p+1.25*2=4
2p=4-2.5
2p=1.5
p=0.75
A group of 52 people attend a ball game. There were three times as many men as women in the group. Write and solve a system of equations for m, the number of men, and w the number of women in the group.
Answer:
lets call the children, c, and call adult, a,
c+a= 52 eq 1: a=52-c
c=3a eq 2
take a's value from eq 1 and plug it into eq 2
c=3(52-c)
c=156-3c
4c=156
c=39 the number of children that attended the ball game.
Step-by-step explanation:
Answer:
ok lol i think it is 3m x w=52 for the equation
Divide each term by
3
m
x
and simplify.
w
=
52
3
m
x
Choose the graph that matches the system of inequalities.
–x + y ≤ –1
x + 2y ≥ 4
Answer:
The correct
answer is B
The correct option is B)
What is a feasible region?A feasible region satisfies all the inequalities of a linear programming problem. It is based on the technique of optimization.
Given here the inequalities as –x + y ≤ –1
x + 2y ≥ 4
The graph plotting the two equations is plotted in the attached file
Hence from the given graph option B is the correct option.
Learn more about feasible regions here:
https://brainly.com/question/29314086
#SPJ2
pls help quick
Which statement describes the blood type of a person with the alleles IAi?
It is type AB because I and i are codominant.
It is type AB because A and i are codominant.
It is type A because i is dominant and A is recessive.
It is type A because A is dominant and i is recessive.
Answer:
It is type A because A is dominant and i is recessive.
Step-by-step explanation:
Answer:
I agree with 5421103, the answer is C.
Step-by-step explanation:
PLEASE PLEASE PLEASE HELP ME ASAPPPP THANK YOU BRAINLY IF CORRECTTT
Article Il of the U.S. Constitution gives the president the power to:
A. issue executive orders.
B. appoint executive department leaders.
C. impeach leaders in Congress.
D. reject Supreme Court appointments.
Answer:
A
Step-by-step explanation:
the president can order the military basically
Answer:
A. Issue executive orders
Step-by-step explanation:
Article II Section I states that executive power will be invested in the president during his four year term. Meaning he has the power to issue executive orders.
A 2-digit number is written on a paper. What is the probability that it starts with 2?
Answer:
1 out of 9
Step-by-step explanation:
Rochelle wants to use all of her raisins to bake batches of granola. She has 3/4 cup of raisins.
Each batch requires 1/8 cup of raisins. How many batches can she make?
Answer:
She has 3/4 and each batch requires 1/8. 3/4 can be turned into 6/8 she can make 6 batches.
6. Find the first, fourth, and tenth terms of the arithmetic sequence described by the given rule.
A(n)
12 + (n-1)(3)
3,24, 27
0,9,27
12,24, 42
12, 21, 39
Answer:
[tex] A_1 = 12[/tex]
[tex] A_4=21[/tex]
[tex] A_{10}= 39[/tex]
Step-by-step explanation:
[tex]A_n = 12+(n-1)(3) \\ \\ plug \: n = 1 \\ A_1 = 12+(1-1)(3) \\ = 12 + 0(3) \\ = 12 + 0 \\ \red{ A_1= 12} \\ \\ plug \: n = 4\\ A_4 = 12+(4-1)(3) \\ = 12 + 3(3) \\ = 12 + 9 \\ \purple{ A_4= 21} \\ \\ plug \: n = 10\\ A_{10} = 12+(10-1)(3) \\ = 12 + 9(3) \\ = 12 + 27 \\ \orange{ A_{10}= 39} \\ \\ [/tex]
Tell whether x and y are proportional.
1, 2, 3
7, 8, 9
brainliest for the correct answer
Answer:
2250 m
Step-by-step explanation:
30 cm = 0.3 m
1 : 75 :: 0.3 : x
Product of extremes = product of means
1 *x = 75 * 0.30
x = 75 * 0.30
x = 22.5 m
Answer:
22.5 m
Step-by-step explanation:
Convert to meters
.3 / x = 1/75
multiply .3 by 75 to get 22.5 m
If I had an iPhone 6 that was 12 by 9 inches and an iPhone X that was 17 by 8 inches, how many feet would they be? If you want a challenge divided by 2 at the end.
Answer:
$13.41
Step-by-step explanation:
maybe, I'm not that sure :/
btw you can, can you please mark me brainliest :)
What is the equation of the line through the origin and (-4,-9)?
OA. y= 9x
O B. y=
OC. y= 4x
OD.y
Answer:D
Step-by-step explanation:
The scale from an actual triangle to the drawing at the right is 30 to 1 the scale from the same triangle to Georges drawing of the triangle is 10 to 1 is this drawing or Georges drawing larger explain your answer
Answer:
Georges drawing is larger.
Step-by-step explanation:
A scale is a representative fraction that can be used to either increase or decrease the dimensions of a given object. It can either be; reduced or enlarged.
From the given question, both scales are enlarged scale. But,
the scale from the actual triangle to the drawing = 30:1
This implies that every measure of 30 on the drawing is 1 of the actual. So that a measure of 120 on the drawing equals 4 on the actual.
Georges' scale = 10:1
This implies that every 10 measure equal 1 of the actual. So that a measure of 120 on the drawing is 12 on the actual.
Therefore, Georges drawing is larger.
i have the coronavirus
Answer:
Ok-
Step-by-step explanation:
anyone know? plz help any oen