Answer:
61 cents
Step-by-step explanation:
We can create 2 equations.
5C + (1)S = 20
2C+ 3S = 21
We can alter the first equation below
S = 20 - 5C
Now we replace S with 20 - 5C into the second equation as shown
2C + 3(20 - 5C) = 21
Simplify:
2C + 60 - 15C = 21
Combine Like Terms:
-13C = -39
C = 3
Now we can calculate S
S = 20 - 5(3)
S = 5
12(3) + 5(5) = 36+25 = 61
evaluate the expression when c=-3/4 and x=2/3
c-2x
Answer:
-2.0833333333333333333
Step-by-step explanation:
I used demos scientific
Please help me I need to turn this in very soon
Answer:
1331/3375
Step-by-step explanation:
(11/15) ^3 = (11*11*11)/(15*15*15) =1331/3375
-5/8 - (-4/3)
Pls help
Answer:
Step 1 of 2: Subtract.
Subtract
(
negative 5 over 8
−
5
8
) − (
negative 4 over 3
−
4
3
) =
17 over 24
17
24
Step 1 of 2: Subtract, sub-step a: Subtract a negative.
Subtract a negative
negative 5 over 8
−
5
8
− (
negative 4 over 3
−
4
3
) =
negative 5 over 8
−
5
8
+
4 over 3
4
3
Subtracting a negative is the same as adding a positive.
Step 1 of 2: Subtract, sub-step b: Find common denominator.
Find common denominator
negative 5 over 8
−
5
8
+
4 over 3
4
3
= −
( 5 × 3 ) over ( 8 × 3 )
5 × 3
8 × 3
+
( 4 × 8 ) over ( 3 × 8 )
4 × 8
3 × 8
=
negative 15 over 24
−
15
24
+
32 over 24
32
24
24 is the least common multiple of denominators 8 and 3. Use it to convert to equivalent fractions with this common denominator.
Step 1 of 2: Subtract, sub-step c: Add.
Add
negative 15 over 24
−
15
24
+
32 over 24
32
24
=
(
negative 15
−15 + 32 ) over 24
negative 15
−15 + 32
24
=
17 over 24
17
24
Answer:
The answer would be 17/24
Step-by-step explanation:
1. Common denominator is going to be 24. 3(-5/8) - 8(-4/3)
2. Next multiply. -15/24 + 32/24
3. After addition you get 17/24 or 0.7
please hurry this is timed and I only have 20 mins left!!!
Answer:
x = 6 2/3 The supplementary pair of angle is 78 degree and z = 112degree = 180 degree First step is where we can also see z its opposite angle is vertical opposite angle to 112 degree given and label as vertical angle - where we see a line through the 180 degree line at any angle we can call the pair supplementary- Pairs OR sets of angles an only be called consecutive when they are grouped with a set of parallel line across a straight line and it is only because they add up to 180 they could be either terms so as there isn't parallel shown ; we know we an call a pair of angles upon a straight line supplementary.angles.
Step-by-step explanation:
6 x +38 (+112) = 180 degree as angles on a straight line add up to 180 6 x +38 (+112) = 180 6 x +140 = 180 6 x + 140- 140 = 180-140 6 x = 40 x = 40/6 x = 6.66666667 x = 6 2/3 Proof (6( 6 2/3)) + 38 + 112 = 180 = (40+38)+112 = 180 = 78 +112 = 180 Proves the supplementary angle is 78 degree.
what is 6 over x-8 - 3x over x squared -5
Answer:
6/x^5-2x-8
Step-by-step explanation:
6 over x-8-3x is
6/x-8-3x/x^-5
Over x^-5
x^-5 can be rewritten as
6/x-8-3x+x^5
Simplify:
6/x^5-2x-8
Hope this helps!
Please help me with this math problem I am going to fail if I don’t get this right
Answer:
[tex]7+3^{2} - 2[/tex] × [tex]5 < (\frac{3}{4} + \frac{1}{8} )[/tex] ÷ [tex]\frac{1}{8}[/tex]
Step-by-step explanation:
so <
hope this helps!
What is 5m + 5n where m = 10 and n = -5?
A. 25
B. 26
C. 62
D. 52
ADD EXPLANATION IF NECESSARY. TYSM! :D
Answer:
A
Step-by-step explanation:
5 times 10= 50
5 times -5= -25
50-25=25
Which statement represents the expression?
24−8÷4
A.24 minus 8 divided by 4
B.the difference of 24 and 8 divided by 4
C.24 minus the quotient of 8 divided by 4
D.24 minus 4 divided by 8
Answer:
Which statement represents the expression?
24−8÷4
A. 24 minus 8 divided by 4
B. the difference of 24 and 8 divided by 4
C. 24 minus the quotient of 8 divided by 4
D. 24 minus 4 divided by 8
The answer is a. 24 minus 8 divided by 4
-----------------------------------
[tex] \green{ \boxed{ \boxed{ \sf{Lusi \: Adriana} } } } [/tex]
Hope it is useful...help me please 5 points
Answer:
-12
Step-by-step explanation:
Miles is 33 year old and single in 2020 his only income consisted of $10500 in wages what is the maximum amount he can contribute to a traditional ira for 2020
Answer:
$6,000
Step-by-step explanation:
$6,000 Because miles younger than 50
Multiply or divide. write fractions in simplest form.
-2/7 divided by (-8/21)
please help with this problem i will mark you brainliest :)
Answer:
3/4
Step-by-step explanation:
(-2/7) / (-8/21)
When dividing by a fraction flip it over and multiply
(-2/7) * (-21/8)
Cancel 2 and 8
(-1/7) * (-21/4)
Cancel 7 and 21
(-1/1) * (-3/4)
multiply
3/4
jay has a rare baseball card collection. he currently owns 10 baseball cards. each month, he purchases a new card for his collection. write a model to represent the number of cards in jays collection after n months
Answer:
y=n+10
explanation
he adds a new baseball card every month and he starts off with 10
say its been 3 months since he started
3(months)+10 (that he already had)
he now has 13 cards.
Ninety (90) milliliters is equal to how many tablespoons?
Answer: 6.087 tablespoons. or rounded to nearest whole, 6
Step-by-step explanation:
I just know
Radium-221 has a half-life of s. How long will it take for of a sample to decay?
Answer:
The answer is 82.109 sec.
Step-by-step explanation:
Last year, Dante had $10,000 to invest. He invested some of it in an account that paid 7% simple interest per year, and he invested the rest in an account
that paid 8% simple interest per year. After one year, he received a total of $730 in interest. How much did he invest in each account?
a = amount invested at 7%
b = amount invested at 8%
we know that total that he invested was 10000, therefore a + b = 10000.
hmmm how muich is 7% of "a"? well (7/100) * a => 0.07a.
how much is 8% of "b"? well (8/100) * b => 0.08b.
After a year he received in interest $730, so we know that at simple interest rate, 0.07a + 0.08b = 730.
[tex]\begin{cases} a+b=10000\\ 0.07a+0.08b=730\\[-0.5em] \hrulefill\\ b = 10000 - a \end{cases}\qquad \stackrel{\textit{substituting on the 2nd equation}}{0.07a+0.08(10000-a) = 730} \\\\\\ 0.07a+800-0.08a=730\implies 0.07a-0.08a=-70\implies -0.01a=-70 \\\\\\ a=\cfrac{-70}{-0.01}\implies \boxed{a = 7000} ~\hfill \stackrel{\textit{we know that}}{b = 10000 -a}\implies \boxed{b = 3000}[/tex]
What value is equivalent to 5 + [5 (4 + 2)]?
35
45
60
0110
Help pls thx
Answer:
45 5+[5(4+2)]?
Step-by-step explanation:
i hope is helped:)
Would appreciate the help
Answer:
The probability of obtaining exactly 3 tails is on the tosses is 1/8.
Step-by-step explanation:
P(all tails)= P(nickel tails)P(dime tails)P(quarter tails)
P(all tails)= (1/2)(1/2)(1/2)
P(all tails)= 1/8
Ryan solved the problem above. He says there are 6 groups of 6 students and 1 group of 5 students . What did Ryan do wrong?
Answer:
hello want to be friends so i can join you and you can join me
PLEASE HELP! I"LL MARK BRAINLIEST!!!!
△ABC is translated left 3 units to form the image ∆A′B′C′.
What are the coordinates of the vertices of ∆A′B′C′ ?
Enter your answer by filling in the boxes.
A′ =
B′ =
C′ =
Answer:
a is -1, -2
b is -1, 2
c is 2, 2
Step-by-step explanation:
i hope i helped
plz help meeeeeeeeeeeeeeeeeee
Answer:
3
Step-by-step explanation:
Answer:
3
Step-by-step explanation:
I NEED HELP W THIS ASAP!!!!!
Answer:
[tex]18[/tex]
Step-by-step explanation:
[tex] \frac{28}{14} = 2 \\ \frac{36}{x} = 2 \\ x = \frac{36}{2} \\ = 18[/tex]
phone company offers to monthly plans. Plan a cost $11 plus an additional $.19 for each minute of calls. Plan B cost $16 plus an additional $.15 for each minute of calls
Answer:
whats the question I can't help without a question
i have most important question what is 2+2 ?
Answer:
4
Step-by-step explanation:
Answer:
When I look at -2^2 I see two operations, a negation and a power (square). The convention in mathematical expressions is that powers are performed before negations (also before additions, multiplications and divisions) so to evaluate -2^2 you first square the 2 to get 4 and then apply the negation to arrive at -4.
With (-2)^2 the parentheses tell you to consider -2 as a single quantity and square it so (-2)^2 = (-2) × (-2) = 4.
I hope it's help
(2/3a - 5) - (1/3a + 3) simplify
Answer:
i have no idea mate
Hey there!
(2/3a - 5) - (1/3a + 3)
= 2/3a - 5 - 1/3a + 3
COMBINE the LIKE TERMS
= (2/3a - 1/3a) - ( -5 + 3)
= 1/3a - 2
Therefore, your answer should be: 1/3a - 2
OR
HELP PLEASE
What is (are) the x intercept(s) of the function graphed above?
-4
-14 and 4.5
-5,1, and 4
-4, -1 and 5
Answer:
-4, -1, and 5
Step-by-step explanation:
1. The x-intercepts of a function is where the function intersects with the x-axis.
2. Given the information above, we can see that the function intersects the x-axis at (-4,0), (-1,0), and (5,0).
This means that the x-intercepts are -4, -1, and 5.Please take a look at the picture
Answer:
C
Step-by-step explanation:
it is none of the above, because
x - (-x) = x + x = 2x
and that is not -x
0 - (-x) = 0 + x = x
and that is not -x
which letter onthe diagram below represents a diameter of the circle.
The total cost of 1 pencil and 2 erasers is £8, and the total cost of 2 pencils and 4 erasers is £20, as shown below:
Let the cost of 1 pencil be £x, and the cost of 1 eraser be £y. Write two linear equations in x and y:
Answer:
see explanation
Step-by-step explanation:
The 2 equations are
x + 2y = 8 → (1)
2x + 4y = 20 → (2)
5b + 6 - 6b + 2 = 19
Answer:
i got b= -11
Step-by-step explanation:
Answer:
b=-11Step-by-step explanation:
5b + 6 - 6b + 2 = 19
5b-6b+6+2=19
-b+8=19
b=8-19
b=-115(-11) + 6 - 6(-11) + 2 = 19
-55 + 6 + 66 + 2 = 19
-55+74=19
19=19
-36.12 divided by -5 3/5
- BRAINLIEST answerer