A) 3/4 ÷ 5 1/5.
Answer:
[tex] \frac{15}{104} [/tex]
B) 3/7 ÷ 2 1/2.
Answer:
[tex] \frac{6}{35} [/tex]
C) 5/8 ÷ 6 5/6.
Answer:
[tex] \frac{15}{164} [/tex]
D) 8 3/10 ÷ 5/8.
Answer:
[tex]13 \frac{7}{25} [/tex]
Alice's average mark for 4 Science exams is 68%. Can Alice score enough marks in a fifth exam so that her average mark increases to 75?%? Give reasons.
Answer:
It is not possible for Alice to score an average of 75% because what she needs to score in the fifth exam exceeds the maximum possible score.
Step-by-step explanation:
She scored an average 68% in all 4 exams.
This means; (68% + 68% + 68% + 68%)/4
Now, a fifth exam is added and we want to know if her average can now be 75%.
Thus, let the score in the 5th exam be x and we now have;
(68% + 68% + 68% + 68% + x)/5 = 75%
Multiply both sides by 5 to get;
(68% + 68% + 68% + 68% + x) = 375%
272% + x = 375%
x = 375% - 272%
x = 103%
The maximum score is 100% and therefore it is impossible for her to score 103%. Therefore it is not possible for Alice to score an average of 75%
What is 2.5x X 12.5p????????????????
Answer:
31.25xp
Step-by-step explanation:
Find x ?
PLEASE HELP
Answer:
x = 16
Step-by-step explanation:
HELP MEH PLS! Will mark brainliest :3
Simplify it- don't solve it. Show your work too pls!
Answer:
Step-by-step explanation:
[tex](1/5k)^2=1/5^2*k^2[/tex]
[tex]1/25*k^2=\frac{k^2}{25}[/tex]
Answer: [tex]\frac{1}{25}k^2[/tex]
This is equivalent to [tex]\frac{k^2}{25}[/tex]
In decimal form, this is equivalent to 0.04k^2
==================================
Work Shown:
We have the two pieces 1/5 and k, all in the parenthesis being squared.
Square each piece
Squaring the piece 1/5 leads to (1/5)^2 = 1/25, since 5^2 = 25squaring the k value leads to k^2So overall, we end up with the answer [tex]\frac{1}{25}k^2[/tex] which is equivalent to saying [tex]\frac{k^2}{25}[/tex]
In decimal form, this is 0.04k^2 because 1/25 = 0.04
Hey guys please help if I did this question correct if not can you answer it for me I would give you a Brainliest answer if you answer and that is NO JOKE❤
find solution............................
.
Answer:
Here is it answer
Step-by-step explanation:
4+√2/2+√2 × 2-√2/2-√2
8+2√2-4√2-2/(2)^2-(√2)^2
6-2√2/4-2
(3-√2)
therefore 3-√2
mark as brainliast
a=3
b=2
Dee's solution is incorrect because her equation is incorrect. Write the correct equation she could use to find x
m
x + 40 + 60 =180
x=80
m
Jackson has a gift card to Target for $25, he buys a $5 Lego toy each time he goes Write an equation to represent the money Jackson spends on his gin card. How much money will he have left after 3 trips to Target?
Answer:
x = every time he goes to target.
y = the amount he has left.
25 - 5x = y
After 3 trips, he will have 10 dollars left.
Step-by-step explanation:
25 - 5(3) = y
25 - 15 = 10
Answer:
10
Step-by-step explanation:
25 - 5, 20 - 5, 15 - 5 = 10
if it is monday, then the following is tuesday. if it not tuesday. then previous day was not monday.
2.5 ( x – 4) = 1.2x - 20.4
Answer:
-8 is correct answer of this question
Answer: x=—8
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don’t contain the variable
A rectangle has a width of 2/7 cm and a length represented by the expression a+4. Find the area. (tell me how btw! and i will give brainliest.)
answer:
we know the formula for area is,
L x W
so,
2/7 (a+4) = area
solve this by distributing the 2/7,
you get = 2/7a + 8/7
the area is 2/7a + 8/7
if correct, please mark the brainliest :)
Which equation is a linear function?
y=x
y= square root of 2
y = x^3
y = x^2
Answer:
y = x
Step-by-step explanation:
ILY IF U HELP ME ON THIS PLS
Answer:
l and k are both 70
Step-by-step explanation:
l and k are both the same angle.
130+90= 220
360-220=140
140/2=70
therefore l and k are both 70
Which expression is equivalent to V64a^6 ?
Answer:
8a^3
Step-by-step explanation:
John opens a saving account with an initial deposit of $282.50. Every week, he deposits $45.50 in the account. How much will John have in his account after 7 weeks?
a. $328.00
b. $289.50
c. $601.00
d. $318.50
Answer:
C
Step-by-step explanation:
total amount after 7 weeks=282.50+45.50 ×7
=282.50+318.50
==601.00 $
The ratio of boys to girls in the soccer club is the same as in the volleyball club. There are 20 boys and 12 girls in the soccer club. There are 9 girls in the volleyball club. How many boys are in the volleyball club?
Answer:
15
Brainiest plz :)
Answer:
15
Step-by-step explanation:
20-12=6
15-9=6
How many solutions does
y=f(x)
−y=−f(x)
have
the options are
no solution
infinitely many solutions
one solution
Answer:
Infinitely many solutions
Step-by-step explanation:
There are 2 variables in this equation. Since, there are infinite many numbers, we can substitute them in x & y. This will lead to an infinite number of solutions.
35% of 15% of x is equivalent to which of the following?
A. 0.0525x
B. 0.125x
C. 0.25x
D. 0.525x
E. 5.25x
Answer:
a
Step-by-step explanation:
.35x.15=0.0525
There is a cube that is 1 unit long, 1 unit wide,
and 1 unit deep. What is the volume of this
cube?
a. 4 cubic units
b. 3 cubic units
c. 2 cubic units
d. 1 cubic unit
Answer:
v = 1
Step-by-step explanation:
volume of a cube = side cubed
1 cubed = 1
Answer:
answer is 1 cubic unit
hope this helps
Please help!!! I will mark brainliest! Explain your answers please!!! (If you dont know then dont awnser)
Answer:
Step-by-step explanation:
Angle ACB is congruent to Angle DCE
Reason 4: SAS- Side Angle Side
Angle ACB is congruent to Angle DCE
Reason 4: SAS- Side Angle Side is the correct answer to the question
what is the percentage decrease, if the price of a shirt is reduced from 800rupees to 640rupees?
(pls answer quickly it is very urgent)
At the county fair, 210 snow cones were sold for a total of $540. Large snow cones (x) cost $3.00 each and small snow cones (y) cost $2.00 each. Which equations below could be used to model this system of equations? Select all that apply.
Answer:
3x + 2y = 540
x + y = 210
Step-by-step explanation:
Giving the following information:
At the county fair, 210 snow cones were sold for a total of $540. Large snow cones (x) cost $3.00 each and small snow cones (y) cost $2.00 each.
We can establish the following system of equations:
x= number of large snow cones sold
y= number of small snow cones sold
3*x + 2*y = 540
x + y = 210
Write the equation of this line in y= mx + b form
Answer:
y=4
Step-by-step explanation:
Because it is a horizontal line, there is no slope the only thing that is there is the y intercept
Jackie had $50.00. She bought 2 skirts for $18.95 each, including tax. She also bought lunch for $5.50. How much money does Jackie have left?
Answer:
She has $6.60
Step-by-step explanation:
2(18.95) + 5.50 = 43.4
50 - 43.4 = $6.60
Answer:
She has $6.60 left.
Step-by-step explanation:
$18.95x2 is 37.90. $37.90+ $5.50 is $43.40. $50.00- $43.40 is $6.60.
PLEASE HELPPLEASEEEEEE
Answer:
yes they are
Step-by-step explanation:
Proportional relationships are relationships between two variables where their ratios are equivalent. Another way to think about them is that, in a proportional relationship, one variable is always a constant value times the other. That constant is know as the "constant of proportionality".
Give three equivalent ratios of 45/48
Answer:
[tex] \frac{15}{16} \\ \frac{90}{96} \\ \frac{135}{144 } [/tex]
Answer:
15/16, 90/96 and 135/144. hope it helps
Rosalia passed out fliers that say, “Vote for Rosalia!" She
gave out 85 fliers on Monday, 66 fliers on Tuesday, and
99 fliers on Wednesday. What fraction of the fliers did
she give out on Wednesday? Use a diagonal fraction bar
in your answer Explain how you found the answer
Answer:
Step-by-step explanation:
there is a total of 250 fliers. the simplist form is 99/250
Answer:80
Step-by-step explanation:it’s -19 then +33 so 85-19=66 and 66+33=99
3.5 m
What is the approximate circumference of the swimming pool? Use 3. 14 as an estimate for t.
A 7 m
ОО
B. 11 m
o
C. 22 m
O
D. 28 m
Circumference = 2 x pi x r
Circumference = 2 x 3.14 x 3.5m
Circumference = 21.98
Round to 22m
The answer is c. 22m
PLEASE HELP!!! If the simple interest on $7,000 for 5 years is $2,100, then what is the
interest rate?
formula.
2100 = 7000 .r: 5
Solve for r.
re
(Simplify your answer. Type an integer or a decimal.)
Answer:
46.66
Step-by-step explanation:
Solve by elimination by filling in the blanks below.
We will cancel our x's in this problem!
-5x+4y=30
2x+3y=-12
Answer: (x, y)=(0, -6）
Step-by-step explanation:
To solve a system of equations there are usually 3 general ways.
- Elimination
- Substitution
- Augmented Matrix
Since the question is asked to use elimination, we are going to use it.
--------------------------------------------------------------------------------------
-5x+4y=30
2x+3y=-12
-10x+8y=60
10x+15y=-60
23y=0
y=0
------------------------------------------------------------------------------------------
Substitute the y value into any one of the equations
2x+3y=-12
2x+3(0)=-12
2x+0=-12
x=-6
Hope this helps!! :)
Please let me know if you have any questions