Answer:
= 3.65.
Step-by-step explanation:
You know that Tom has 23 coins in total. That means the number of dimes and the number of quarters equals 23.
D + Q = 23
You also know that the total value of the coins is $3.65. A dime is worth $0.10 and a quarter is worth $0.25, so:
0.10*D + 0.25*Q = 3.65
That says that 10 cents per dime times the number of dimes, plus 25 cents per quarter times the number of quarters is three dollars and sixty-five cents.
So you have a system of linear equations:
D + Q = 23
0.10D + 0.25Q = 3.65
I'm going to multiply the bottom row by 100 to clear the decimals.
D + Q = 23
10D + 25Q = 365
Now I can multiply the top row by -10 to eliminate the D terms
-10D - 10Q = -230
10D + 25Q = 365
________________
0D + 15Q = 135
15Q = 135
Q = 9
Tom has 9 quarters.
If D + Q = 23, and Q = 9, then:
D + 9 = 23
D = 14
Tom has 14 dimes.
Always good to double check:
9 quarters is worth $2.25. 14 dimes is worth $1.40. These should sum to $3.65.
2.25 + 1.40
Write an equation for the following real life scenario.
Use "t" to represent your variable.
Jasmine's cell phone company charges her $35 a month for phone service plus 0.50 for each text message. Her
total bill for the month was $51.
Answer:
[tex]35+0.50t=51[/tex]
Step-by-step explanation:
Since the $35 is a one-time fee, 0.50 is the rate, t is the variable, and 51 is the total bill, we can form the equation:
[tex]35+0.50t=51[/tex]
Answer:
0.50t+35=51
Step-by-step explanation:
0.50 is the amount for each text message so it becomes 0.50t (0.50 × text message). This is added to the monthly cost which is 35 dollars (+35) the question wants an equation as the answer so (=51).
Pls help I’m so confused
[tex]5x-6-x=2x+2\\\\5x-x-2x=2+6\\\\2x=8 \ \ /:2\\\\x=4\\\\\huge\boxed{\text{There is one solution at x=4}}[/tex]
Answer:
There is one solution at x+4
Step-by-step explanation:
I will give you brainliest and points like 100.
5 of the students in Lena's class have been in ballet and 9 have been in a play. 2 students have been both in ballet and in a play. How many students have been in ballet but not in a play?
Answer:
3 have only been in ballet
Step-by-step explanation:
If
5 have been in ballet
9 have been in play
2 have been in both ballet and a play
Then
3 have only been in ballet
7 have only been in a play
Answer:
4 students
Step-by-step explanation:
add 2 + 5 = 7
add 9 + 2 = 11
subtract 11 - 7 = 4
there was 2 students added to the 5 students, there was 2 students added to the 9 students/ Sorry if incorrect, i worked it out 4 times.
SHOW STEPS!!
4.
x + 4y -- 67 = -1
2x - y + 2z = -7
-x + 2y -- 43 = 5
HELP NEEDED !!!
find the unknown angles
-0.58x+0.38x=4.8
plz help quick
Answer:
-0.2x=40
Step-by-step explanation:
-0.58x+0.38x=4.8
Combine like terms:
-0.2x=4.8
That’s for the answer, but if you want to go further, divide -0.2 to both sides:
x=24
A farmer plowed 9/10 of a acre in the morning and 1/2 of an acre in the afternoon. How many acres did the farmer plow in all?
Answer:
7/5
Step-by-step explanation:
Answer:
1[tex]\frac{2}{5}[/tex] of an acre or 1.4 acres.
Step-by-step explanation:
The least common multiple of 10 and 2 is 10.
Convert [tex]\frac{9}{10}[/tex] and [tex]\frac{1}{2}[/tex] to fractions with a denominator of 10.
[tex]\frac{9}{10}[/tex]+[tex]\frac{5}{10}[/tex]
Since these fractions now have the same denominator, add them by adding the numerators.
[tex]\frac{9+5}{10}[/tex]
Add 9 and 5 to get 14.
[tex]\frac{14}{10}[/tex]
Reduce the fraction to the lowest terms by extracting and canceling out 2.
[tex]\frac{7}{5}[/tex]= [tex]1\frac{2}{5}[/tex] =1.4
hope this helps!
write and expression for the perimeter of the polygon. simplify the expression. (marking brainiest)
Step-by-step explanation:
Expression = x + 2x + 7 + 3x + 1
Simplication
x + 2x + 7 + 3x + 1
6x + 8
Find the value of AB.
Step-by-step explanation:
Since all side lengths of smaller squares are equal, we have
[tex]3x+4=4x-1[/tex]
[tex]x=5[/tex]
Since length of AB is twice of the side length of smaller squares,
[tex]\bar{AB}=2(3x+4)=2(3\cdot5+4)=38[/tex]
Answer:
AB=38
SEE THE IMAGE FOR SOLUTION
Ricardo's Appliance is having a 35% off sale on
all items in the store. What's the sale price on a
$549.00 refrigerator?
$356.85
$192.15
$514.00
$449.67
the answerrrrrrr is
356.85
Luisa sells stuffed animals.She sells a stuffed elephant for $34.90,and the sales tax is 9% of the sale price.About how much is the sales tax on the elephant
Answer:
G.$3.15
Step-by-step explanation:
Step 1-
The estimate for the given situation for the amount is $35, the sales tax of the stuffed elephant is:
=35 x 0.09 - Multiply by the decimal 9%
=$3.15 - Multiply the values
Result- G.$3.15
-3+x=-8 what is the answer
Answer:
x=-5
Step-by-step explanation:
add 3 to -8
1 Regroup terms.
x-3=-8
x−3=−8
2 Add 33 to both sides.
x=-8+3
x=−8+3
3 Simplify -8+3−8+3 to -5−5.
x=-5
x=−5
Answer: x=−5
24,12,6 find the 8th term
Answer:
0.1875, or [tex]\frac{3}{16}[/tex]
Explanation:
Using the formula [tex]a_n=\frac{24}{2^{n-1} }[/tex], where [tex]n = term[/tex], we find
[tex]a_8 = 0.1875[/tex]
help!!!! Will give Brainly
B is the answer for this question due to the value of root and that's is root under 20
Answer:
Point B represents the location of
[tex] \sqrt{20} [/tex]
Step-by-step explanation:
As the value of under root 16 is 4 and the value of under root 25 is 5
So the location of under root 20 will be in between 4 and 5 on the number line
.
.
.
Hope it helps
The square below represents one whole.What percent is represented by the shaded area?
You won't type in the percent sign as that's already taken care of
=============================================================
Explanation:
We have 6 squares shaded out of 100 total. This means we have 6/100 = 0.06 = 6% of the squares shaded. The term "percent" means "per 100" or "for every 100".
Take note that there are 10 rows and 10 columns, meaning there are 10*10 = 100 squares total, either shaded or not shaded.
I need help on the question up here
2x + 4a = 10
2x = 10 - 4a
x = 5 - 2a
13.
Evaluate the function rule for the given value.
y= 4·2× for x = –6
A. 1/32
B. –48
C. 1/8
D. 1/16
Answer:
B. –48
Step-by-step explanation:
Answer:y=-48
Step-by-step explanation:
4*(2*-6)=-48
Answer:
The correct answer is y= 1/16
Step-by-step explanation:
2^-6 is 1/64 multiplied by 4 is 1/16
Substitute the value of the variable into the expression and simplify.
( − 6 , − 48 )
can u help me solve the problem plzzzzz
Step-by-step explanation:
This is the same as
[tex]( \frac{2}{3} ) {}^{5 {}^{0.4} } = \frac{2}{3} {}^{2} = \frac{4}{9} [/tex]4/9 is the answer
using the distributive property and gcf determine which of the following expressions is equivalent to: 24+32
Answer:
GCF is 8
32x - 24 = 8(4x - 3)
Step-by-step explanation:
if f(x)=3x-7 evaluate f(-2w+1/2)=
Step-by-step explanation:
f(x) = 3x - 7
f (-2w + .5) = 3(-2w + .5) - 7
= -6w + 1.5 -7
= -6w - 5.5
10 times the quantity 9 minus a number x
Answer:
[tex]10 \times 9 - x \\ x = 10 \times 9 \\ x = 90[/tex]
PLEASE MARK ME BRAINLIEST.Solve for x:
X^3=216
Answer:
6
Step-by-step explanation:
x = 216^(1/3)
x = 6
What word phrase can you use to represent the algebraic expression 7x?
Answer:
seven time (multiplied by) x
Step-by-step explanation:
Please help! Homework DUE TOMORROW!!!
i need help plzz i neeeed help
Answer:
-3+4=1
Step-by-step explanation:
Start with whichever arrow starts from 0
Use partial products and the distributive property to calculate the product. Use paper to show your work.
300\times 41.9300×41.9
Answer:
22054.36
Step-by-step explanation:
Which transformation carries the trapezoid onto itself?
O a reflection across the line x = -1
O a rotation of 180°about the origin
O a rotation of 180° about the point (-1.0)
Answer:
a rotation of 180° about the origin
30. Writing in Math When is an estimate not as useful as an exact answer? Give an example.
Answer:
647/ 4.8 ×9.7
Step-by-step explanation:
so what you need to do is 647 round up to 650 because 1-4 you get less but more than 5-9 u get more than that
4.8 becomes 5 and 9.7 becomes 10
650 /5×10
and u ill get 1,300 i hope this hepls u :)
explain why the "add a decimal and zero rule" work?
Answer:
he quotient has a remainder of 4.
The quotient has a remainder of 14.
The quotient has no remainder.
The quotient has a remainder of 12.Step-by-step explanation:
if f(x)=4x-5 what is the value of f(2)
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Value of Polynomial :The value of a polynomial p(x) or f(x) at x = α is obtained by putting x = α in p(x) or f(x) and it is denoted by p(α) ...!
Required Solution :Let f(x) = 4x - 5
⇒f(2) = 4(2) - 5
= 4 × 2 - 5
= 8 - 5
= 3
Hence, If f(x) = 4x-5 then the value of f(2) will be 3 ...!
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Answer:
f(2) = 3Step-by-step explanation:
f(x) = 4x-5f(2) = (4×2)-5f(2) = 8-5f(2) = 3HOPE THIS HELPS YOU......