Answer:
There are no mistakes
Step-by-step explanation:
I did the assignment
Math 7 Review:Question 4
A car used 15 gallons of gasoline when driven 315 miles. Based on this
information, which expression should be used to determine the unit rate of
miles per gallon of gasoline?
Select one:
15 gallons
315 miles
O
315 miles x 15 gallons
O
315 miles
15 gallons
O
315 miles - 15 gallons
Answer: 315/15 gallons
Step-by-step explanation:
You have to divide 315 by 15
Fill in the blanks below
2y-5w
Y= -3
W= -1
Evaluating Expressions
Answer:
[tex]2y - 5w \\ here \\ \: y = - 3 \\ w = - 1 \\ then \: = > 2 \times (- 3) - 5 \times ( - 1) \\ = 2 \times - 3 - 5 \times - 1 \\ = - 6 + 5 \\ = - 1 \\ thank \: you[/tex]
The solution of expression after substituting given values is, - 1
We have to give that,
An expression is defined as,
2y - 5w
Here, y = - 3
w = - 1
Now, Substitute y = - 3 and w = - 1 in above expression,
we get;
⇒ 2y - 5w
⇒ 2 × - 3 - 5 × - 1
⇒ - 6 + 5
⇒ - 1
Therefore, The solution is, - 1
To learn more about the equation visit:
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If 6x-11y = 0, What will be the value of X:y?
Step-by-step explanation:
value i believe will be for
X= 11/6y
Y=6/11x
What is the value of this expression?
1.5(−2.4+(−5.3))
Answer:
-11.55
Step-by-step explanation:
(to get the numbers out of the brackets you have to multiply all the numbers in the brackets to the number that is there, and in this case its 1.5)
1.5x(-2.4)= -3.6
1.5×(-5.3)= -7.95
after that, you add them (because there is a plus sign, not a minus, multiplication sign or a division sign.)
-7.95+ -3.6= -11.55
answer= -11.55
Abby did 212 sit-ups in 8 minutes.Estimate the number of sit-ups she did in 1 minute
Step-by-step explanation:
212 sit-ups = 8 minutes
1 minutes = 212÷8
1 minutes = 26.5
The equation y = 18x describes the amount of money Spongebob earns as a fry cook, where x is the
number of hours he works and y is the amount of money he earns. Show work. Complete sentence.
The table shows the amount of money Squidward earns as a cashier for different numbers of hours worked.
Squidward’s Earnings
Time (h) 3 5 8 10
Money earned
($) 48 80 128 160
(a) How much money does Spongebob earn per hour?
(b) How much money does Squidward earn per hour?
(c) Who earns more per hour? Justify your answer
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
a.) How much money does Spongebob earn per hour?
[tex] \$ \: 18[/tex]b.) How much money does Squidward earn per hour?
[tex] \$ \: 16[/tex]c) Who earns more per hour? Justify your answer
Spongebob earns more than that of squidward per hour.
Refer to attachment for Solution ~
d: -6x + 2 = -15 , help pls fasttt
Pigs love to eat bacon! I wonder why. But, you learn something new everyday! :)
Goodmorning everyone! Would somebody help me asap?!!
Answer:
it is 12
hope this answer helps you dear take care!
Question THREE and FOUR
Answer:
-10 out side the radical sign then 2 in the sign
2 out side the radical 3 inside the radical
Step-by-step explanation:
Please help! Suppose f(x)=-8x^7 +8x-6
then f(-x)=________
Answer:
f(-x) = 8x⁷ - 8x - 6Step-by-step explanation:
f(x) = -8x⁷ + 8x - 6
To find f(-x), we'll need to plug in -x instead of x.
f(x) = -8x⁷ + 8x - 6
f(-x) = -8(-x)⁷ + 8(-x) - 6
f(-x) = 8x⁷ - 8x - 6write 55% as a rate per 100
[YOUR ANSWER]
55% = ?/100
(i will mark brainliest but you just have to wait also no scam links pls.)
Answer:
55% of 100 is 55% of 100
Step-by-step explanation:
just a guess
HELP LAST ATTEMPT to ( get marked brainliest show work !
Answer:
D
Step-by-step explanation:
First student's calculation :
Area = 3*20*20 = 1200 sq. yds
Second student's calculation:
Area = 3.14 * 20 * 20 = 1256 sq. yds
Difference = 1256 - 1200 = 56 sq yds
Answer is D
i need help from anyone i would be happy
Answer:
The answers are given in the attachment.
If there is 1/3 of quantity A for every 4/9 of quantity B, how much of quantity A is there for 2/5 of quantity B?
Answer:
The ratio equivalent to 5/3 is
For example, if we have a ratio 250 to 150, we can simplify it by dividing both numbers by 10 and then by 5 to get 5 to 3: 250 : 150 25 : 15 5:3 . The ratio 5 to 3 is the simplest form of the ratio 250 to 150, and all three ratios are equivalent.
A department store pays an interior designer a 25% commission for
sales. How much will the department store have to pay the interior
designer if her weekly sales are $1,875? *
Answer:
25 percent of 1,875 is 468.75
Translate the following phrase into an algebraic expression. do not simplify.
y multiplied by the product of 3 and r
Answer:
y(3r)
Step-by-step explanation:
Brenden collected 975 bottle caps for a school fundraiser over 20 days. He estimated that he collected an average of 50 bottle caps each day. Was Brendens answer reasonable?
Find the exact circumference of the circle. please help?
Answer:
3rd option
Step-by-step explanation:
We first need to find the diameter of the circle.
We know this is a square because all sides are marked by a line so this means they are equal. Let find the diagonal of the square to find all parts of the square.
The diagonal of a square is
[tex]a \sqrt{2} [/tex]
where a is the side lengths of the square.
So this means the diagonal of the square is
[tex]18 \sqrt{2} [/tex]
The diagonal is also the diameter of the main circle. The formula for circumference is
[tex]d\pi[/tex]
where d is the diameter.
So the diameter is
[tex](18 \sqrt{2} )\pi[/tex]
or
[tex]18\pi \sqrt{2} [/tex]
The third option is correct
Todd and Garrett began arguing about who did better on their tests, but they couldn't decide who did better given that they took different tests. Todd took a test in Math and earned a 74.6, and Garrett took a test in English and earned a 68.8. Use the fact that all the students' test grades in the Math class had a mean of 70.6 and a standard deviation of 11.9, and all the students' test grades in English had a mean of 63.7 and a standard deviation of 8.6 to answer the following questions.
Required:
a. Calculate the z-score for Todd's test grade.
b. Calculate the z-score for lan's test grade.
c. Which person did relatively better?
Part A
For Todd's class, we have this given info:
mu = 70.6 = population mean of math scoressigma = 11.9 = population standard deviation of math scoresCompute the z score for x = 74.6
z = (x-mu)/sigma
z = (74.6 - 70.6)/(11.9)
z = 0.34 approximately
Side note: Convention usually has z scores rounded to two decimal places. If your teacher instructs otherwise, then go with those instructions of course.
Answer: 0.34======================================================
Part B
For Garret's English class, we have:
mu = 63.7sigma = 8.6Compute the z score for x = 68.8
z = (x-mu)/sigma
z = (68.8 - 63.7)/(8.6)
z = 0.59 approximately
Answer: 0.59======================================================
Part C
Garret has the higher z score, which means that Garret did relatively better to his classmates compared to Todd's performance (in relation to his classmates). The z score is the distance, in units of standard deviation, the score is from the mean. Positive z values are above the mean, while negative z values are below the mean.
Answer: Garret did relatively better1.Round 23.542 to the nearest tenth.
2.Round 1.823 to the nearest whole number.
3.Round 5.592 to the nearest hundredth.
4. What is 0.27845 rounded to 3 decimal places?
Answer:
1-23.5
2-2
3-5.59
4-0.278
1/2x+50=125 What does x =
Answer:
X = 150
Step-by-step explanation:
1/2x + 50 = 125
1/2x = 75
2(1/2x) = 150
x = 150
Hope this helps. Pls give brainliest.
evaluate -(2-^6)(2^3)
Answer:
The answer = -512
Step-by-step explanation:
To find -(2-^6)(2^3)
We have that -(2-^6) = {-(-2*-2*-2*-2*-2*-2)}=
-(64) which is -64
For (2^3) = (2*2*2) =8
Therefore -(2-^6)(2^) = (-64)(8)
which is = -512
So therefore -(2-^6)(2^3) = -512
Find the measure of angle y.
A)
19
B)
22
41
D)
120
Answer:
m<y=22º
Step-by-step explanation:
180-19-41=120
m<1=120º
m<1≅m<2
m<2=120º
180-120-38=22
so y=22º
Find an equation of the tangent line to the curve y = 10/(1 + e^-x) at the point (0,5)
Compute the derivative, dy/dx (use the chain rule):
y = 10/(1 + e ⁻ˣ) = 10 (1 + e ⁻ˣ)⁻¹
===> dy/dx = -10 (1 + e ⁻ˣ)⁻² (-e ⁻ˣ) = 10e ⁻ˣ/(1 + e ⁻ˣ)²
Evaluate the derivative for x = 0 to get the slope of the tangent to the curve at (0, 5) :
dy/dx (0) = 10e ⁰/(1 + e ⁰)² = 10/(1 + 1)² = 10/4 = 5/2
Use the point-slope formula to get the equation of the tangent line:
y - 5 = 5/2 (x - 0)
===> y = 5/2 x + 5
a ____________ is sometimes a rectangle
a. parallelogram
b. rhombus
c. square
d. trapezoid
Answer:
parallelogram
Step-by-step explanation:
Points A, B, and C are collinear. Point B is between A and C. Find the length indicated. AB= 5x-15, BC=3x-5, and AC=28. Find AB
Answer: AB is 15
Step-by-step explanation: First, you need to draw a picture and label the parts of the line: AB=5x-15; BC= 3x-5; AC =28. Because of the segment addition postulate, you set the equation to be 5x-15+3x-5=28. Then you solve:
5x-15+3x-5=28
Add like terms:
8x-20=28
Add 20 to both sides
8x=48
Divide by 8
x=6
Now, you need to find the measure of AB, so you plug the 6 into the x variable for 5x-15
5(6)-15
30-15
AB=15
Is the function even, odd, or neither?
A. even
B. odd
C. neither
D. both even and odd
it's neither
Step-by-step explanation:
It's not symmetrical
Answer:
C
Step-by-step explanation:
The function is neither
Andre's personal record for the long jump is 16 feet.
Then, he jumps 10% farther.
What is Andre's new personal record for the long jump?
Answer: 17.6
Step-by-step explanation:
16*10/100
160/100
1.6+16
17.6
Answer:
17.6 feet
Step-by-step explanation:
16*10%(or 0.10)= 1.6 feet which is 10% of his 16 foot jump
16+ the 10% increase of 1.6= 17.6 feet as his new record
the graph shown is the solution set for which of the following inequalities
y≤x-1
y≤|x+1|
y≤|x|-1
Answer:
y≤|x+1|
Step-by-step explanation: