Answer:
84 ÷ -12 = -7
21 ÷ -3 = -7
Step-by-step explanation:
49 ÷ -7 = -7
Means that __ ÷ __ must equal -7
There are many options, here are a few:
84 ÷ -12 = -7
or -84 ÷ 12 = -7
21 ÷ -3 = -7 etc
Mrs. Allen a high school teacht is grading quizzes and tests this weekend she has at most 4 hours or 240 minutes to spend grading and she would like to get at least 60 quizzes and tests graded on average it takes her 3 minutes to grade each quiz and 8 minutes to grade each test
Answer:
(55,9)
Step-by-step explanation:
Write one inequality to represent the number of quizzes and tests Mrs. Allen must grade and one inequality to represent the number of minutes it will take her to grade the quizzes and tests.
Mrs. Allen must grade at least 60 quizzes and tests, so the sum of x and y must be greater than or equal to 60.
On average, it takes Mrs. Allen 3 minutes to grade each quiz and 8 minutes to grade each test. So, the total number of minutes it takes her to grade x quizzes is 3x minutes, and the total number of minutes it takes her to grade y tests is 8y minutes. Since she has at most 240 minutes to spend grading, the sum of 3x and 8y must be less than or equal to 240.
The solution set to the system of these linear inequalities represents the numbers of quizzes and tests Mrs. Allen can grade this weekend.
Now, consider each of the coordinate points. In order to be a solution to this system of inequalities, both inequalities must be satisfied by the values of x and y. When x = 55 and y = 9, both inequalities are satisfied. To confirm, substitute these values of x and y into the first inequality.
Now substitute the values into the second inequality.
Therefore, the only point that lies in the solution set is (55,9).
2. (0, 3); slope = -2
Answer:
y-3=-2(x-0)
Step-by-step explanation:
i think this is what u needed
using the slope formula find the slope of the line that passes through these points (-2,4) and (4,-1)
Answer:
-5/6
Step-by-step explanation:
The formula for slope is [ y2-y1/x2-x1 ].
-1-4/4-(-2)
-5/6
Best of Luck!
Answer:
3/2 or 1.5 :) hope this helped
Step-by-step explanation:
4 - 1 3
------- = --- = 1.5
4 - 2 2
one fourth plus ten sixteenths
Answer:
fourteen-sixteenths
Step-by-step explanation:
Answer:
7/ 8
(Decimal: 0.875)
Step-by-step explanation:
1/4+10/16
1/4+5/8 (simplfy into simpliest terms)
2/8+5/8 (find the common denominator)
2+5/8 (add the numerators)
Answer=7/8
Which best describes the classification for the
following number set?
{-4 1/2, -1, 3/4, 3.5, 13, 24 5/8}
I. Rational numbers
II. Integers
III. Whole numbers
I only
l and I| only
| and Ill only
I, II, and I||
Answer:
I only
Step-by-step explanation:
All numbers are rational.
Not all numbers are whole or integers.
Answer: I only
If a 30 foot ladder is positioned so that the bottom of the ladder is 1/4 of its length away from the wall, what angle does the ladder make with the ground
Answer:
[tex]75.52^\circ[/tex]
Step-by-step explanation:
Given that:
The length of the ladder = 30 ft
Distance between bottom of ladder and wall = [tex]\frac{1}{4}^{th}[/tex] of its length
To find:
Angle made between the ladder and ground = ?
Solution:
This situation can be compared with a right angled [tex]\triangle ABC[/tex] as shown in the attached image in the answer area.
Side AC being the hypotenuse has the ladder along it.
AB is the wall.
BC is the distance between the wall and foot of ladder.
Formula for cosine trigonometric ratio:
[tex]cos\theta = \dfrac{Base}{Hypotenuse}[/tex]
In [tex]\triangle ABC[/tex]:
[tex]cosC=\dfrac{BC}{AC}[/tex]
Putting the values:
[tex]BC=\dfrac{AC}{4}[/tex]
[tex]cosC=\dfrac{\frac{AC}4}{AC}\\\Rightarrow cos C = \dfrac{1}{4}\\\Rightarrow \angle C = cos^{-1}(0.25)\\\Rightarrow \angle C =\bold{75.52^\circ}[/tex]
Carol gets paid $10 per hour to work as a lifeguard this weekend she worked on both Saturday and Sunday she made a total of $80 girl worked for five hours on Saturday for how many hours did she work on Sunday
Answer:
3 hours
Step-by-step explanation:
Given
[tex]Earnings = \$10[/tex] per hour
[tex]Total\ Earnings = \$80[/tex]
Required
Determine the number of hours worked on Sunday
If she works for 5 hours on Saturday, then her Saturday earnings is:
[tex]Saturday\ Earnings= \$10 * 5[/tex]
[tex]Saturday\ Earnings= \$50[/tex]
Her earnings on Sunday is Total Earnings - Saturday Earnings. So, we have:
[tex]Sunday\ Earnings = Total\ Earnings - Saturday\ Earnings[/tex]
[tex]Sunday\ Earnings = \$80 - \$50[/tex]
[tex]Sunday\ Earnings = \$30[/tex]
Number of hours worked is calculated by dividing earnings by earnings per hour.
So:
[tex]Hours = \frac{\$30}{\$10}[/tex]
[tex]Hours = 3[/tex]
Hence, she worked for 3 hour
Jackson has $25 in his lunch account at school. He spends $3 each day to eat in the cafeteria. What is Jackson's lunch account balance after two weeks of buying his lunch in the cafeteria?
Answer:
$10 is in his account.
Step-by-step explanation:
goes to school 5 days a week$3 per day so 3x5subtract 15 from 252008, the price of a gallon of unleaded gasoline was $4.02. In 1990, it was only $1.37 per gallon. What is the increase expressed as a percent change? Round to the nearest percent.
Answer:
p
Step-by-step explanation:
p
Deductive reasoning uses all of the following to draw logical conclusions except:
A.) Rules
B.) Laws
C.) Patterns
D.) Facts
Answer:
Laws
Step-by-step explanation:
It just is
Answer:
patterns
Step-by-step explanation:
Deductive reasoning is used to prove conjectures to be true.
A group of friends were working on a student film. They spent all their budget on costumes and equipment. They spent $396 on costumes, and 45% of the total budget on equipment. What was the total budget for their student film?
Answer:
The total budget for their student film was $720.
Step-by-step explanation:
From the information given, you know that they spent all their budget on costumes and equipment and that they spent 45% of the total budget on equipment. From this, you could inferred that in order to find the percentage they spent on costumes you have to subtract 45% from 100% that would indicate the total amount spent:
100%-45%=55%
According to this, you know that they spent 55% of the total budget on costumes and the statement says that the amount was $396. With this information, you can use a rule of three to find the amount that represents 100%:
396 → 55%
x ← 100%
x=(396*100)/55=720
The answer is that the total budget for their student film was $720.
for questions 10-11 if l || m, find the values of x and y.
Answer:
10) 9x - 2° = 5x + 54° (corresponding angles are equal)
9x - 5x = 54 + 2
4x = 56
x = 56/4
x = 14°
10y + 6° = 9x - 2° (linear pair)
10y + 6° = 9(14)° - 2°
10y + 6° = 126° - 2°
10y + 6° = 124°
10y = 124° - 6°
10y = 118
y = 118/10
Sorry, i don't know how to do the 11th question
but hope this helps you!
What is the value of x
HELP!!!!
Answer: 7
Step-by-step explanation: This is an equalateral triangle. You can tell by the marks on each angle, marking that they are equal.
This means that the two sides that aren't the hypotenuse are the same.
Therefore,
[tex]4(x+2) = 36[/tex]
Multiply out the 4
[tex]4x + 8 = 36[/tex]
Subtract 8
[tex]4x = 28[/tex]
Divide by 4
[tex]x = 7[/tex]
bana ran 18.6 miles of a marathon in 3 hours
unit rates
Answer:
6.2
Step-by-step explanation:
try this 18.6 divided by 3
Answer:
6.2
Step-by-step explanation:
Brainliest
Which inequality represents the following situation:
Hats are $16 each and Joe has no more than $80 to spend. How many hats can he purchase?
80x ≥ 16
80x ≤ 16
16x ≥ 80
16x ≤ 80
Answer:
16x <= 80
It's D
16x= 16$ for each hat
80= the most he can spend
In context: Each hat cost 16$ and the most he can spend is 80, nothing more than that.
whats the first step in evaluating this expression?
3 x [9 - (4+2) ÷ 2]
Answer:
Parenthesis
(18)
Explanation:
3 · [9 - (4+2) ÷ 2]
= (3)(9 + −3)
= (3)(9) + (3)(−3)
= 27 − 9
= 18
Mrs. Lewis had $100 to purchase school supplies for her class. She bought 40 glue sticks and 40 boxes of crayons. Each glue stick cost $1.50, and each box of crayons cost $0.89. How much money did Mrs. Lewis have left after these purchases?
Answer:
the answer is she had $4.40 left.
Step-by-step explanation:
1) 40x1.50=60 2) 40x0.89= 35.6 3) 60+35.6= 95.6 4) 100- 95.6= $4.4 I hope this helps if not sorry. :)
Sabrina has 2/4 of a pizza and wants to share it equally between her and kayla.How much of the pizza does each person get?
Answer:
1/4 of the pizza.
Step-by-step explanation:
Since there are 2 people, you would want to divide 2/4 by 2. 2/4*1/2 = 1/4, so your answer is 1/4.
Which of the following inequalities are correct?
Some of the numbers involved are shown on the number line below.
Answer:
Only C is correct
Step-by-step explanation:
59 is bigger than -59 not smaller so A is incorrect
0 is smaller than 76 not bigger do B is also incorrect
-76 is smaller than -59 according to number line so option C is correct
Answer:
Only C is correct because -59 would be closer to the 0 that the - 76. So therefore -59 is bigger than -76.
Step-by-step explanation:
Hope I helped have an amazing day! If you have time pls mark this as brainliest trying to get points!
The cost of a cab ride is $4.25 plus $0.35 per mile. How many miles did a person travel if the cost of the cab ride was $14.75?
A. 30 miles
B. 35 miles
C. 42 miles
D. 54 miles
Answec 42
Step-by-step explanation:
use a calculater and time 0.35 by each answerd and then you get your annswer
The owner of a small store buys coats for $40.00 each .she sells the coats for $7200 each. What percent of the purchase price is the sale price?
★PLSSSSS HELPPPPPPPPP★
9514 1404 393
Answer:
(-2, 3)
Step-by-step explanation:
Of the choices offered, the only point that is on the line is (-2, 3).
2 trifles cost £7
how much do 6 trifles cost
Answer:
23
Step-by-step explanation:
multiply the cost by 3
Answer:
£21
Step-by-step explanation:
Use ratios! Amount of trifle: Amount of money
2:7
*3 *3
6:21
£21
Simplify the expression. √-14√-19
Please help!!
Help it’s 10 points whoever guesses is getting reported
Answer:
c
Step-by-step explanation:
III
because in (x,y) y is the second as you see
y is the vertical axis and x is the horizontal so IV is correct
On Monday there were 25 students that came to school, on Tuesday there was a 20% in
student attendance. How many students were in attendance on Tuesday?
Answer:
there are 20 students in attendance on tuesday
Step-by-step explanation:
20% of 25 is twenty
WILL GIVE BRAINLIEST find the value of r (-4,8), (r,12), m=4/3 (show your work pls)
Answer:
r = 13
Step-by-step explanation:
The first step is to find b from y=mx=b using m=4/3 and (-4,8)
[tex]8=\frac{4}{3}(-4)+b[/tex]
After solving the equation, b will equal -16/3 making the final equation be
[tex]y=\frac{4}{3} x-\frac{16}{3}[/tex]
Using the equation, you can solve for r.
[tex]12=\frac{4}{3} x-\frac{16}{3}[/tex]
This will bring the answer being r = 13
Which set of ordered pairs does not represent a function?
O {(4,4), (3, -8), (7,-6), (-5, -3)}
o {(-6,6), (8, 2), (8, -1), (3,3)}
o {(-4,-6), (-9, -7), (6, 7), (0, -6)}
o {(9, 5), (-5, -5), (0, 9), (8,3)}
Answer:
The second choices is the answer
{(-6,6), (8, 2), (8, -1), (3,3)} as you can see there's a repeating value of x or the Domain which is the 8.
Susan is 5.5 ft tall and casts a shadow that it is 4 ft long on the ground. She is walking through a park and finds the shadow of a sculpture is 16 ft long. How tall is the sculpture?
Answer:
22 ft
Step-by-step explanation:
Height of Susan/Length of shadow = Height of sculpture/Length of Shadow of sculpture
5.5 ft/4 ft = x/16ft
Cross Multiply
4 × x = 5.5 × 16
x = 5.5 × 16/4
x = 22 ft
The height of the sculpture is 22 ft
Nathaniel participated in an 18-mile race. He ran 1 2 mile in 1 6 hour. If he ran the entire race at the same pace, how long, in hours, will it take Nathaniel to finish the race?
Answer:
24 hours
Step-by-step explanation:
set up a ratio:
12 miles = 16 hours
------------- ------------
18 miles = x hours
cross multiply
12m * x = 16h * 18 m
solve for x
x=16h * 18m / 12m = 24 hours